Coke oven ascension pipe base convenient to maintain

Abstract

The utility model relates to the technical field of coke ovens in coking plants, in particular to a coke oven ascension pipe base convenient to maintain. The coke oven ascension pipe base convenient to maintain comprises a pouring cylinder and a conical inner cylinder inserted into the pouring cylinder. According to the coke oven ascension pipe base convenient to maintain, provided by the utility model, the whole coke oven ascension pipe base is provided with the pouring barrel and the conical inner barrel, and when tar in a coke oven ascends to the ascension pipe, part of graphite is accumulated after the tar flows down to the cavity wall of the conical inner barrel along the pipe wall; when the lifting pipe base is detached from a coke oven, or the conical inner cylinder is damaged due to high temperature to cause hidden dangers of other faults, the conical inner cylinder can be cleaned or replaced simply and conveniently after the fastening screw is screwed off and then the conical inner cylinder is reversely rotated and taken out of the pouring cylinder, so that the problem that the whole lifting pipe base of the coke oven is difficult to detach from the coke oven is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coke ovens in coking plants, in particular to a coke oven riser base which is easy to maintain. Background Art

[0002] The coke oven is a kiln that uses coal to make coke. It is the main thermal equipment for coking. Its main purpose is to make coke. Chemical products can be recovered. The main raw material of chemical products is raw gas, which is emitted by the combustion of coal in the carbonization chamber of the coke oven. Generally, the design value of the top space temperature of the carbonization chamber is 800℃ (±30℃), but due to the influence of actual working conditions, the actual temperature is generally around 850℃. The theoretical value of raw gas temperature is 600-800℃, and the actual temperature is generally 750-850℃. Raw gas passes through the coke oven. The riser and bridge pipe then pass through the gas collecting pipe to enter the chemical production area. The temperature is higher in the riser part, and the riser base is one of the parts where the raw gas is output. It is subjected to the strongest temperature and corrosion. The traditional riser base is lined with refractory bricks, which are prone to powdering and falling off under long-term high temperature. At the same time, due to structural deficiencies, there are gaps in the joints of refractory bricks, and the raw gas gradually corrodes the pipe wall through the gaps. Under high temperature environment, burn-through, deformation, cracking and other temperatures will appear in 3-6 months, and it needs to be replaced, which is very time-consuming and labor-intensive.

[0003] Therefore, it is necessary to provide a new coke oven riser base that is easy to maintain to solve the above-mentioned technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a coke oven riser base which is easy to maintain.

[0005] The utility model provides a coke oven riser base that is easy to maintain and comprises:

[0006] Casting cylinder, and

[0007] A conical inner cylinder inserted in the casting cylinder;

[0008] A flange is fixedly embedded on the top of the casting cylinder, and two groups of symmetrically distributed installation channels for installing the conical inner cylinder are opened at the top of the casting cylinder.

[0009] The installation channel includes an insertion groove and an arc groove, wherein the insertion groove is provided on the top of the casting barrel and is vertically arranged, and the groove surface at the bottom of the insertion groove is connected with a port on one side of the arc groove provided in the casting barrel, and a threaded through hole penetrating the top end surface of the casting barrel is provided at the groove on the other side of the arc groove;

[0010] The top of the conical inner cylinder is fixedly sleeved with a mounting plate, and two symmetrically distributed inserting blocks are fixedly installed on the outer plate walls on both sides of the mounting plate.

[0011] Preferably, the two insertion blocks on the tapered inner cylinder are respectively inserted into two insertion grooves provided in the casting cylinder and rotate around the arc groove to the end of the arc groove.

[0012] Preferably, a threaded fastening screw is inserted into the threaded through hole formed on the casting cylinder, and the fastening screw is inserted into the through hole formed in the insertion block.

[0013] Preferably, the tapered inner cylinder is wide at the top and narrow at the bottom, and a straight cylinder is fixedly embedded at the bottom of the tapered inner cylinder.

[0014] Preferably, a limiting ring is fixedly engaged with the inner cylinder wall of the casting cylinder close to the bottom.

[0015] Preferably, the straight cylinder at the bottom of the conical inner cylinder is inserted into a limiting ring.

[0016] Preferably, the flange is provided with a plurality of mounting holes distributed in an annular shape.

[0017] Preferably, the casting cylinder is a hollow cylinder made of mullite casting material.

[0018] Compared with the related art, the coke oven riser base provided by the utility model which is easy to maintain has the following beneficial effects:

[0019] In the utility model, the entire coke oven riser base is provided with a casting barrel and a conical inner barrel. When the tar in the coke oven rises to the riser, it flows down along the pipe wall to the cavity wall of the conical inner barrel, and some graphite will accumulate. Or the conical inner barrel may be damaged due to high temperature, leading to other hidden dangers of failure. At this time, after unscrewing the fastening screw, reversing the conical inner barrel and taking it out from the casting barrel, the conical inner barrel can be cleaned or replaced. It is simple and convenient, and there is no need to laboriously disassemble the entire coke oven riser base from the coke oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of a preferred embodiment of a coke oven riser base that is easy to maintain provided by the utility model;

[0021] Figure 2 for Figure 1 The cross-sectional structural diagram shown;

[0022] Figure 3 for Figure 1 One of the structural schematic diagrams of the casting tube shown;

[0023] Figure 4 for Figure 3 The structural schematic diagram of the bottom of the casting cylinder is shown;

[0024] Figure 5 for Figure 3Schematic diagram of the structure of the conical inner cylinder shown.

[0025] Numbers in the figure: 1, casting cylinder; 2, flange; 2a, mounting hole; 3, mounting channel; 31, insertion groove; 32, arc groove; 33, threaded through hole; 4, tapered inner cylinder; 41, mounting plate; 42, insertion block; 43, straight cylinder; 5, limiting ring; 6, fastening screw. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0028] See also Figures 1 to 5 The embodiment of the utility model provides a coke oven riser base that is easy to maintain. The coke oven riser base that is easy to maintain includes: a casting cylinder 1 and a conical inner cylinder 4.

[0029] In the embodiments of the present invention, please refer to Figure 1 and Figure 3 A flange 2 is fixedly fitted on the top of the casting tube 1, and a plurality of annular mounting holes 2a are provided on the flange 2. The casting tube 1 is a hollow cylinder made of mullite casting material, and the outside of the casting tube 1 is cast by an annular heat-resistant cast iron.

[0030] It should be noted that: the bottom of the casting tube 1 is fixedly installed on the top of the coke oven, specifically, a ceramic fiber rope is bonded to the outer wall of the bottom of the casting tube 1, and mortar is appropriately applied on the seat bricks, and then the bottom of the casting tube 1 is built into the predetermined position on the top of the coke oven. During the building process, it should be ensured that the casting tube 1 is concentric with the masonry, and the deviation is controlled within ±2 mm. After the building, the gap is plugged with a specified ceramic fiber rope, and a layer of clay fire mud mortar is applied on the surface, thereby completing the fixed installation of the casting tube 1;

[0031] In the present embodiment, the casting tube 1 is made of mullite casting material, so that the casting tube 1 has good thermal shock resistance, abrasion resistance and other properties, and the outer wall of the casting tube 1 can also be coated with corrosion-resistant coating, and the specific coating can be rotated according to needs, thereby improving the corrosion resistance and service life of the casting tube 1.

[0032] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, a conical inner cylinder 4 is inserted in the casting cylinder 1, and two groups of symmetrically distributed installation channels 3 for installing the conical inner cylinder 4 are opened at the top of the casting cylinder 1, and the installation channels 3 include an insertion groove 31 and an arc groove 32, the insertion groove 31 is opened on the top of the casting cylinder 1 and is vertically arranged, and the groove surface at the bottom of the insertion groove 31 is connected to one side port of the arc groove 32 opened in the casting cylinder 1, and the other side groove of the arc groove 32 is opened with a threaded through hole 33 that penetrates the top end surface of the casting cylinder 1;

[0033] The top of the conical inner tube 4 is fixedly sleeved with a mounting plate 41, and two symmetrically distributed insertion blocks 42 are fixedly installed on the outer plate walls on both sides of the mounting plate 41. The two insertion blocks 42 on the conical inner tube 4 are respectively inserted into the two insertion grooves 31 opened in the casting tube 1 and rotate around the arc groove 32 to the end of the arc groove 32, and a threaded fastening screw 6 is inserted in the threaded through hole 33 opened in the casting tube 1, and the fastening screw 6 is inserted into the through hole opened in the insertion block 42.

[0034] It should be noted that: the conical inner tube 4 is inserted into the casting tube 1, and the two insertion blocks 42 on the conical inner tube 4 are respectively inserted into the two insertion grooves 31 opened on the casting tube 1. After completion, the conical inner tube 4 is rotated so that the two insertion blocks 42 are rotated to the ends of the arc grooves 32, and then the fastening screws 6 are inserted into the threaded through holes 33, thereby completing the fixing of the conical inner tube 4 in the casting tube 1, and the riser can be fixed to the flange 2 later;

[0035] The entire coke oven riser base is provided with a casting tube 1 and a conical inner tube 4. When the tar in the coke oven rises to the riser, it flows down along the tube wall to the cavity wall of the conical inner tube 4, and some graphite will accumulate. After unscrewing the fastening screw 6, the conical inner tube 4 is reversed and taken out from the casting tube 1, and the conical inner tube 4 can be cleaned or replaced, which is simple and convenient.

[0036] In the present embodiment, the tapered inner cylinder 4 is wide at the top and narrow at the bottom, and a straight cylinder 43 is fixedly embedded in the bottom of the tapered inner cylinder 4, and a limiting ring 5 is fixedly embedded in the inner cylinder wall of the casting cylinder 1 near the bottom, and the straight cylinder 43 at the bottom of the tapered inner cylinder 4 is inserted into the limiting ring 5, thereby improving the stability of the bottom end of the tapered inner cylinder 4.

[0037] The working principle of the coke oven riser base that is easy to maintain provided by the utility model is as follows:

[0038] The bottom of the casting tube 1 is fixedly installed on the top of the coke oven. Specifically, a ceramic fiber rope is bonded to the outer wall of the bottom of the casting tube 1, and mortar is applied to the seat bricks appropriately. Then, the bottom of the casting tube 1 is built into the predetermined position on the top of the coke oven. During the building process, it should be ensured that the casting tube 1 is concentric with the masonry, and the deviation is controlled within ±2 mm. After the building, the gap is plugged with the specified ceramic fiber rope, and a layer of clay fire mud mortar is applied on the surface to complete the fixed installation of the casting tube 1. The casting tube 1 adopts mullite casting material, which makes the casting tube 1 have good thermal shock resistance, abrasion resistance and other properties. The outer wall of the casting tube 1 can be coated with corrosion-resistant coating, and the specific coating can be rotated according to the needs, thereby improving the corrosion resistance and service life of the casting tube 1, and then the conical inner tube 4 is inserted into the casting tube 1, and the two insertion blocks 42 on the conical inner tube 4 are respectively inserted into the two insertion grooves 31 opened on the casting tube 1. After completion, the conical inner tube 4 is rotated so that the two insertion blocks 42 rotate to the ends of the arc grooves 32, and then the fastening screw 6 is inserted into the threaded through hole 33, thereby completing the fixation of the conical inner tube 4 in the casting tube 1;

[0039] The entire coke oven riser base is provided with a casting tube 1 and a conical inner tube 4. When the tar in the coke oven rises to the riser, it flows down along the tube wall to the cavity wall of the conical inner tube 4, and some graphite will accumulate. Or the conical inner tube 4 may be damaged due to high temperature, leading to other hidden dangers of failure. At this time, after unscrewing the fastening screw 6, the conical inner tube 4 is reversed and taken out from the casting tube 1, the conical inner tube 4 can be cleaned or replaced. It is simple and convenient, and there is no need to laboriously disassemble the entire coke oven riser base from the coke oven.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A coke oven riser base that is easy to maintain, characterized in that: include: a casting cylinder (1), and A conical inner cylinder (4) inserted into the casting cylinder (1); A flange (2) is fixedly fitted on the top of the casting cylinder (1), and two groups of symmetrically distributed installation channels (3) for installing a conical inner cylinder (4) are provided at the top of the casting cylinder (1); The installation channel (3) comprises an insertion groove (31) and an arc groove (32); the insertion groove (31) is provided on the top tube mouth of the casting tube (1) and is vertically arranged, and the groove surface at the bottom of the insertion groove (31) is communicated with a side port of the arc groove (32) provided in the casting tube (1); and a threaded through hole (33) penetrating the top end surface of the tube mouth of the casting tube (1) is provided at the groove opening on the other side of the arc groove (32); A mounting plate (41) is fixedly sleeved on the top of the conical inner cylinder (4), and two symmetrically distributed insertion blocks (42) are fixedly mounted on the outer plate walls on both sides of the mounting plate (41).

2. The coke oven riser base for easy maintenance according to claim 1, characterized in that: The two insertion blocks (42) on the conical inner cylinder (4) are respectively inserted into two insertion grooves (31) provided on the casting cylinder (1) and rotate around the arc groove (32) to the end of the arc groove (32).

3. The coke oven riser base for easy maintenance according to claim 2, characterized in that: A threaded fastening screw (6) is inserted into a threaded through hole (33) formed on the casting cylinder (1), and the fastening screw (6) is inserted into a through hole formed on the insertion block (42).

4. The coke oven riser base for easy maintenance according to claim 1, characterized in that: The conical inner cylinder (4) is wide at the top and narrow at the bottom, and a straight cylinder (43) is fixedly engaged at the bottom of the conical inner cylinder (4).

5. The coke oven riser base for easy maintenance according to claim 4, characterized in that: A limiting ring (5) is fixedly engaged with the inner cylinder wall of the casting cylinder (1) close to the bottom.

6. The coke oven riser base for easy maintenance according to claim 5, characterized in that: The straight cylinder (43) at the bottom of the conical inner cylinder (4) is inserted into the limiting ring (5).

7. The coke oven riser base for easy maintenance according to claim 1, characterized in that: The flange (2) is provided with a plurality of mounting holes (2a) distributed in an annular manner.

8. The coke oven riser base for easy maintenance according to claim 1, characterized in that: The casting cylinder (1) is a hollow cylinder made of mullite casting material.

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