Coke oven riser base structure
By adopting the design of sealing the lower T-shaped platform and sealing filler in the coke oven riser pipe base structure using refractory prefabricated inner lining, the sealing problem of the coke oven riser pipe base structure was solved, achieving a more stable sealing effect and avoiding gas leakage and water ingress.
Patent Information
- Application Number
- CN202422791693.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The traditional coke oven riser base structure has insufficient sealing at the connection with the top of the coke oven, which leads to leakage of coal gas and flue gas and rainwater entering the coke oven, affecting the stability of the equipment.
The outer cover adopts a T-shaped structure with a refractory prefabricated inner lining at the bottom, and combines sealing filler and anti-fall components to ensure that there are no vertical through gaps between the outer cover and the refractory prefabricated inner lining. The sealing stability is improved by connecting the sealing gasket and flange.
It achieves a stable and reliable seal at the coke oven connection point, preventing gas and flue gas leakage and water ingress into the coke oven, thus improving the connection stability and sealing effect of the equipment.
Smart Images
Figure CN223688269U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of coke oven ascending pipe auxiliary assembly, concretely relates to a coke oven ascending pipe base structure. BACKGROUND
[0002] The furnace used for coking with raw coal is called a coking furnace, and the coking process is a process in which raw coal is pyrolyzed and combusted in the coking furnace to remove tar and until the tar is completely removed. A large amount of high-temperature flue gas with complex components released by raw coal is discharged during the tar removal and combustion process, which is called raw gas. The device for leading the raw gas out of the coking furnace is called an ascending pipe. The ascending pipe is a metal tubular auxiliary equipment installed at the top of the coking furnace for discharging raw gas. The recovery of raw gas during the coking process is a very important process. The ascending pipe for recovering heat from the raw gas is called a waste heat recovery ascending pipe, and the ascending pipe for guiding the raw gas to be discharged outward is called a non-waste heat recovery ascending pipe.
[0003] In the actual design of the coke oven, whether it is a waste heat recovery ascending pipe or a non-waste heat recovery ascending pipe, the base structure at the bottom thereof cannot guarantee the sealing performance when combined with the top of the coke oven during construction. This is because the traditional base structure is usually made of cast iron and internally filled with refractory bricks, so that the refractory material at the lower end of the base structure is flush with the iron shell. This results in leakage of gas and smoke at the joint during long-term use due to poor sealing, and rainwater also flows into the furnace through the gap at the joint, directly affecting the stability of the coke oven. UTILITY MODEL CONTENTS
[0004] The utility model discloses a coke oven ascending pipe base structure, which can avoid vertical through seams between the outer cover and the refractory precast lining by blocking and wrapping the bottom end of the outer cover with the T-shaped part of the refractory precast lining at the lower part. This ensures a more stable and reliable sealing effect by ensuring that there are no vertical through seams at the joint of the coke oven after the refractory precast lining of the joint base assembly is combined and connected with the coke oven. Details are described below.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] The utility model provides a coke oven ascending pipe base structure, which comprises a waste heat recovery ascending pipe body and a non-waste heat recovery ascending pipe body. The bottom end of the waste heat recovery ascending pipe body and the bottom end of the non-waste heat recovery ascending pipe body are coaxially fixedly provided with a pipe body flange one and a pipe body flange two, respectively.
[0007] The pipe body flange one and the pipe body flange two are each coaxially fixedly connected with a joint base assembly for stable and sealed combination and connection with the joint of the coke oven.
[0008] As preferred, the docking base assemblies each comprise a peripheral outer cover and an inner refractory prefabricated lining, and the refractory prefabricated lining and the outer cover are densely filled with sealing filler material for fixed connection together, the top end of the outer cover is coaxially fixedly provided with a cover connecting flange capable of being docked with the pipe body flange one and the pipe body flange two, the lower part of the refractory prefabricated lining below the bottom end of the outer cover is in the form of a T-shaped table, and the bottom end of the outer cover is wrapped and sealed by the lower T-shaped table of the refractory prefabricated lining.
[0009] As preferred, the outer cover is a cylindrical iron shell, and the refractory prefabricated lining is a cylindrical refractory prefabricated block with a lower part in the form of a T-shaped table.
[0010] As preferred, the docking position of the cover connecting flange and the pipe body flange one and the pipe body flange two is coaxially filled with a sealing gasket.
[0011] As preferred, the sealing gasket is a ceramic fiber sealing ring, and the sealing filler material is sealing mortar.
[0012] As preferred, the outer periphery of the outer cover is radially provided with a plurality of anti-falling elements, and the inner end of the anti-falling element is embedded in the outer periphery of the refractory prefabricated lining.
[0013] As preferred, the anti-falling element is an M24 screw rod of high-strength 8-grade material, and the inner end of the anti-falling element does not exceed the inner periphery of the refractory prefabricated lining.
[0014] As preferred, the top end of the refractory prefabricated lining is higher than the outer cover, the bottom end of the pipe body flange one is in the form of a concave, and the top end of the refractory prefabricated lining is deeply into the bottom end of the pipe body flange one in a coaxial matching manner.
[0015] As preferred, the bottom surface of the pipe body flange two is a plane, and the top end of the refractory prefabricated lining is flush with the top end of the outer cover.
[0016] The utility model discloses a coke oven riser bottom seat structure, due to the coaxial fixed connection of the butt joint base assembly at the bottom of the waste heat recovery riser body and the non-waste heat recovery riser body, and the butt joint base assembly includes the outer cover and the refractory prefabricated lining, and the refractory prefabricated lining is a lower T-shaped cylindrical refractory prefabricated block, which can avoid the vertical seam between the outer cover and the refractory prefabricated lining by blocking the bottom end of the outer cover with the T-shaped part of the lower part of the refractory prefabricated lining, thereby ensuring the sealing effect of the refractory prefabricated lining and the coke oven interface after the combined butt joint construction of the refractory prefabricated lining bottom surface of the butt joint base assembly and the coke oven interface, avoiding the leakage of coal gas and water into the coke oven.
[0017] The utility model discloses a coke oven riser bottom seat structure, due to the coaxial fixed connection of the butt joint base assembly at the bottom of the waste heat recovery riser body and the non-waste heat recovery riser body, and the butt joint base assembly includes the outer cover and the refractory prefabricated lining, and the refractory prefabricated lining is a lower T-shaped cylindrical refractory prefabricated block, which can avoid the vertical seam between the outer cover and the refractory prefabricated lining by blocking the bottom end of the outer cover with the T-shaped part of the lower part of the refractory prefabricated lining, thereby ensuring the sealing effect of the refractory prefabricated lining and the coke oven interface after the combined butt joint construction of the refractory prefabricated lining bottom surface of the butt joint base assembly and the coke oven interface, avoiding the leakage of coal gas and water into the coke oven.
[0018] 2. After the refractory prefabricated liner and the outer cover are coaxially fitted, a stable sealing connection between the two can be achieved by filling with sealing filler material, which improves the stability and reliability of the combination of the refractory prefabricated liner and the outer cover. At the same time, by inserting anti-falling components through the outer cover into the refractory prefabricated liner, the refractory prefabricated liner can be prevented from falling off downward along the axial direction of the outer cover, which further improves the stability and reliability of the combination of the refractory prefabricated liner and the outer cover.
[0019] 3. The pipe flange at the bottom of the waste heat recovery riser is concave, and the top of the refractory prefabricated liner is higher than the outer cover and extends into the concave part of the pipe flange. This can eliminate the transverse through gap when the pipe flange and the cover connecting flange are connected, which is conducive to improving the sealing stability of the connection between the waste heat recovery riser and the docking base assembly.
[0020] 4. When the pipe flange one of the waste heat recovery riser body and the pipe flange two of the non-waste heat recovery riser body are combined with the docking base assembly, a sealing gasket is installed coaxially. In this way, the sealing stability of the connection between the waste heat recovery riser body and the non-waste heat recovery riser body and the docking base assembly can be further improved by setting the sealing gasket. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Fig. 1 This is a cross-sectional schematic diagram of the waste heat recovery riser body and the docking base assembly of this utility model.
[0023] Fig. 2 This is a cross-sectional schematic diagram of the non-waste heat recovery riser pipe and docking base assembly of this utility model.
[0024] The annotations in the attached figures are explained as follows:
[0025] 1. Waste heat recovery riser pipe body; 101. Pipe body flange one; 2. Docking base assembly; 201. Cover connection flange; 202. Outer cover; 203. Sealing filler; 204. Refractory prefabricated lining; 205. Sealing gasket; 206. Anti-fall component; 3. Non-waste heat recovery riser pipe body; 301. Pipe body flange two. Detailed Implementation
[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0027] Referring to Figs. 1-2 The utility model provides a coke oven riser base structure, including waste heat recovery riser body 1 and non waste heat recovery riser body 3, the bottom of waste heat recovery riser body 1 and non waste heat recovery riser body 3 is coaxially fixed with pipe body flange one 101 and pipe body flange two 301 respectively, pipe body flange one 101 and pipe body flange two 301 are all coaxially fixed with the docking base assembly 2 for stable sealing combination docking with coke oven docking place respectively, specifically, the docking base assembly 2 all includes the outer cover body 202 of periphery and the refractory prefabricated lining 204 of inner periphery, and the refractory prefabricated lining 204 and the outer cover body 202 are densely filled with the sealing filler 203 for being fixed together, the top of outer cover body 202 is coaxially fixed with the cover body connecting flange 201 that can be combined with pipe body flange one 101 and pipe body flange two 301, the lower part of refractory prefabricated lining 204 below the bottom of outer cover body 202 is T table style, and the bottom of outer cover body 202 is wrapped and blocked by the lower part T table of refractory prefabricated lining 204, the purpose of this arrangement is that the way of T table part of refractory prefabricated lining 204 lower part blocking and wrapping the bottom of outer cover body 202 can avoid the existence of vertical through slit between outer cover body 202 and refractory prefabricated lining 204, then after the bottom surface of refractory prefabricated lining 204 of docking base assembly 2 is combined and docked with coke oven docking place construction, by the way of ensuring that coke oven docking place does not exist vertical through slit, it can ensure that it has more stable and reliable sealing effect.
[0028] Referring to Figs. 1-2As shown, the following optimization will be carried out on the butt joint base assembly 2. Specifically, the outer cover 202 is a cylindrical iron cover, and the refractory prefabricated lining 204 is a T-shaped cylindrical refractory prefabricated block. In this way, the outer cover 202 and the refractory prefabricated lining 204 can be efficiently and stably processed, and the outer cover 202 and the refractory prefabricated lining 204 have good and stable use effect. Optionally, the butt joint positions of the cover connecting flange 201 and the pipe body flange one 101 and the pipe body flange two 301 are coaxially filled with sealing pads 205, so that the sealing stability of the connection between the waste heat recovery riser body 1 and the non-waste heat recovery riser body 3 and the butt joint base assembly 2 can be further improved by the setting of the sealing pads 205. Further optionally, the sealing pad 205 is a ceramic fiber sealing ring, and the thickness of the sealing pad 205 is preferably 5mm, and the sealing filler 203 is sealing mortar. In this way, the sealing pad 205 has good and stable sealing use effect, and the sealing filler 203 also has material properties that meet the actual use needs.
[0029] Optionally, a plurality of anti-falling pieces 206 are radially inserted on the periphery of the outer cover 202, and the inner ends of the anti-falling pieces 206 are embedded in the periphery of the refractory prefabricated lining 204, so that the refractory prefabricated lining 204 cannot be axially downwardly separated from the outer cover 202 by penetrating the anti-falling pieces 206 into the refractory prefabricated lining 204, thereby improving the stable and reliable degree of the combination of the refractory prefabricated lining 204 and the outer cover 202. Further, the anti-falling piece 206 is an M24 screw rod made of high-strength 8-grade material, preferably high-temperature creep cast iron material, and the inner end of the anti-falling piece 206 does not exceed the inner periphery of the refractory prefabricated lining 204. In this way, the anti-falling piece 206 can be smoothly installed by penetrating. And specifically to the pipe body flange one 101 and the pipe body flange two 301, the top end of the refractory prefabricated lining 204 is higher than the outer cover 202, preferably 15-20mm, the bottom end of the pipe body flange one 101 is concave, and the top end of the refractory prefabricated lining 204 is deeply inserted into the bottom end of the pipe body flange one 101 in a coaxial manner. In this way, the transverse seam between the pipe body flange one 101 and the cover connecting flange 201 can be eliminated, and the sealing stability of the connection between the waste heat recovery riser body 1 and the butt joint base assembly 2 can be improved. At the same time, the bottom surface of the pipe body flange two 301 is a plane, and the top end of the refractory prefabricated lining 204 is flush with the top end of the outer cover 202, so that the non-waste heat recovery riser body 3 can be stably combined and connected with the butt joint base assembly 2 by the pipe body flange two 301.
[0030] With the above structure, since the butt joint base assembly 2 is coaxially fixedly connected at the bottom of the waste heat recovery riser body 1 and the non-waste heat recovery riser body 3 respectively, and the butt joint base assembly 2 comprises the peripheral outer cover body 202 and the inner peripheral refractory prefabricated lining 204, and the refractory prefabricated lining 204 is a lower T-shaped cylindrical refractory prefabricated block, the vertical through slit between the outer cover body 202 and the refractory prefabricated lining 204 can be avoided by the way that the T-shaped part of the lower part of the refractory prefabricated lining 204 seals and wraps the bottom end of the outer cover body 202, so that after the bottom surface of the refractory prefabricated lining 204 of the butt joint base assembly 2 is combined and connected with the coke oven at the butt joint, the stable and reliable sealing effect can be ensured by ensuring that there is no vertical through slit at the butt joint of the coke oven, avoiding the leakage of coal gas and smoke and the water entering the coke oven. Since the refractory prefabricated lining 204 and the outer cover body 202 are coaxially matched and connected by the filling sealing material 203, the stable and reliable connection between the two can be realized, the stable and reliable degree of the combination of the refractory prefabricated lining 204 and the outer cover body 202 is improved, and the anti-falling piece 206 is penetrated into the refractory prefabricated lining 204 through the outer cover body 202, which can prevent the refractory prefabricated lining 204 from falling axially downward along the outer cover body 202, further improving the stable and reliable degree of the combination of the refractory prefabricated lining 204 and the outer cover body 202. Moreover, since the pipe flange one 101 at the bottom of the waste heat recovery riser body 1 is concave, and the top end of the refractory prefabricated lining 204 is higher than the outer cover body 202 and extends into the concave part of the pipe flange one 101, the transverse through slit when the pipe flange one 101 and the cover body connecting flange 201 are connected can be eliminated, which is conducive to improving the sealing stability of the connection between the waste heat recovery riser body 1 and the butt joint base assembly 2. Since the pipe flange one 101 of the waste heat recovery riser body 1 and the pipe flange two 301 of the non-waste heat recovery riser body 3 are coaxially provided with the sealing gasket 205 when they are combined with the butt joint base assembly 2, the sealing stability of the connection between the waste heat recovery riser body 1 and the butt joint base assembly 2 and the connection between the non-waste heat recovery riser body 3 and the butt joint base assembly 2 can be further improved by the sealing gasket 205.
[0031] In actual construction, after a layer of fire mud is evenly applied on the reserved position plane of the coke oven top, the combined butt joint base assembly 2 and the waste heat recovery riser body 1 or the non-waste heat recovery riser body 3 are placed on the reserved position and adjusted, then the uniformly stirred heat-cut casting material is injected into the gap between the four sides of the butt joint base assembly 2 and the other refractory of the oven top, and the casting material is vibrated and compacted with a vibrating rod, and the construction is completed.
[0032] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A coke oven uptake base structure comprising a waste heat recovery uptake body (1) and a non-waste heat recovery uptake body (3), characterized by: The bottom end of the waste heat recovery riser body (1) and the bottom end of the non-waste heat recovery riser body (3) are coaxially fixedly provided with a pipe body flange one (101) and a pipe body flange two (301) respectively; The pipe body flange one (101) and the pipe body flange two (301) are coaxially fixedly connected with a docking base assembly (2) used for stable sealing combination docking with the coke oven. The docking base assembly (2) comprises a peripheral outer cover body (202) and an inner refractory prefabricated lining (204), and the refractory prefabricated lining (204) and the outer cover body (202) are densely filled with a sealing filler (203) used for fixed connection, the top end of the outer cover body (202) is coaxially fixedly provided with a cover body connecting flange (201) capable of being combined with the pipe body flange one (101) and the pipe body flange two (301), the lower part of the refractory prefabricated lining (204) below the bottom end of the outer cover body (202) is in a T-shaped style, and the bottom end of the outer cover body (202) is wrapped and blocked by the lower T-shaped part of the refractory prefabricated lining (204).
2. A coke oven uptake base structure according to claim 1, characterised in that: The outer cover body (202) is a cylindrical iron shell, and the refractory prefabricated lining (204) is a cylindrical refractory prefabricated block with a lower T-shaped style.
3. A coke oven uptake base structure as claimed in claim 1, wherein: The docking position of the cover body connecting flange (201) and the pipe body flange one (101) and the pipe body flange two (301) is coaxially filled with a sealing gasket (205).
4. A coke oven uptake base structure according to claim 3, characterised in that: The sealing gasket (205) is a ceramic fiber sealing ring, and the sealing filler (203) is sealing mortar.
5. The coke oven uptake base structure according to any one of claims 1 to 4, characterized in that: The outer periphery of the outer cover body (202) is radially provided with a plurality of anti-falling pieces (206), and the inner ends of the anti-falling pieces (206) are embedded in the outer periphery of the refractory prefabricated lining (204).
6. A coke oven uptake base structure according to claim 5, characterised in that: The anti-falling piece (206) is an M24 screw rod made of high-temperature resistant vermicular cast iron, and the inner ends of the anti-falling pieces (206) do not exceed the inner periphery of the refractory prefabricated lining (204).
7. A coke oven uptake base structure according to claim 6, characterised in that: The top end of the refractory prefabricated lining (204) is higher than the outer cover body (202), the bottom end of the pipe body flange one (101) is concave, and the top end of the refractory prefabricated lining (204) is coaxially matched into the bottom end of the pipe body flange one (101).
8. A coke oven uptake base structure according to claim 6, characterised in that: The bottom surface of the pipe body flange two (301) is a plane, and the top end of the refractory prefabricated lining (204) is flush with the top end of the outer cover body (202).