On-line repairing structure for ascending pipe base
By designing the online repair structure of the riser base, using refractory brick lining, steel ring fixing and prefabricated lining block filling methods, the problem of the base being prone to crack in heavy rain is solved, efficient online repair is achieved, and replacement costs and production are reduced. Influence.
Patent Information
- Application Number
- CN202420396541.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-03-01
AI Technical Summary
The existing riser base is prone to cracking during weather changes such as heavy rain, leading to waste gas leakage, causing smoke and fire, and deteriorating the operating environment. Moreover, since the material cannot be welded, it must be replaced, resulting in high replacement costs and production impacts.
A rising pipe base online repair structure is designed, using refractory brick lining, steel ring fixation and prefabricated lining block filling methods to repair the damaged mouth by pouring the refractory mud layer.
The online repair of the riser base is achieved, which avoids high risks and high costs during the removal and replacement process, reduces labor intensity, and takes only 2-3 hours, significantly improving efficiency.
Smart Images
Figure CN222434386U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coke oven riser auxiliary structures in the coking industry, in particular to an online repair structure for a riser base. Background Art
[0002] The riser base is a part of the riser. The riser is installed at the riser port on the top of the coke oven. It is an auxiliary equipment of the coke oven to export the raw coal gas in the carbonization chamber. The upper part is connected to the straight pipe, and the lower part is embedded in the furnace top area and connected to the carbonization chamber. The riser base is made of gray cast iron. The raw coal gas (temperature is 750℃) from the carbonization chamber circulates inside (lined with clay bricks), and the outside is exposed to the air. Due to the long-term influence of weather changes such as temperature, rain and snow, especially during heavy rain, the temperature difference between the inside and the outside increases, which can easily cause the base to crack, and the raw coal gas leaks from the base, resulting in smoke and fire, worsening the operating environment, polluting the atmosphere, and the base of this material cannot be welded, so it must be replaced.
[0003] The existing method of replacing the riser base is to replace it at the end of coking. Before replacing the riser base, the base brick elevation and brick hole size should be checked first, the riser base should be installed for trial, and then the tie strip cover bricks should be laid for trial. The surface of the tie strip cover bricks shall not exceed the specified value by ±3mm. At the same time, the size deviation of the riser base should be checked. The riser base should be flat without protrusions or burrs, and the surface should be smooth. First, lift out the riser, bridge pipe and base together, then disassemble the base and connect the new base to the riser and reinstall it.
[0004] This replacement method has the following four problems: (1) Lifting equipment is required during replacement, which is costly and uneconomical; (2) Ammonia water is needed to seal the gas at the valve body during replacement. The amount of ammonia water will affect the sealing effect and there is a risk of gas leakage; (3) After the base is lifted, the refractory clay at the furnace mouth needs to be cleaned, which is in the high temperature area of the coke oven and the on-site operating environment is harsh; (4) It takes about 3 to 4 hours to replace the riser base, which affects the normal operation of the coke oven coal car and has a certain impact on production. Utility Model Content
[0005] The purpose of the utility model is to provide an online repair structure for a riser base in view of the above situation. The online repair structure is an auxiliary structure designed for the coke oven gas riser. The structure is simple and easy to operate as a whole, has high efficiency and strong practicality.
[0006] The specific scheme of the utility model is: an online repair structure of a riser base, comprising a damaged riser base body, a damaged opening on the riser base body, an inner wall of the riser base body provided with an inner lining made of refractory bricks, a steel ring provided on the outer side of the riser base body, the steel ring surrounds the riser base body in the middle, a prefabricated lining block is filled at the inner opening of the damaged opening, a stainless steel wire is connected to the prefabricated lining block, the steel wire is tightened and fixed on the steel ring, a refractory mud layer is cast between the steel ring and the outer side wall of the riser base body, and the refractory mud layer is fused into one with the prefabricated lining block.
[0007] Furthermore, the steel ring described in the utility model is assembled from two semicircular steel rings to form an integral steel ring, and the joints at both ends of the two semicircular steel rings are locked with locking bolts.
[0008] Furthermore, the diameter of the steel ring in the present invention is 100 mm larger than the outer diameter of the riser base body, and the height of the steel ring is 150 mm.
[0009] Furthermore, the refractory bricks in the lining described in the utility model are in the shape of small blocks of 150 mm×80 mm×40 mm.
[0010] The emergence of the utility model realizes the online repair of the riser base, avoids the construction process of dismantling the riser and bridge pipe, effectively reduces risks, reduces replacement costs, reduces the labor intensity of replacement operations, and takes only 2-3 hours, greatly improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the riser structure;
[0012] Figure 2 It is a schematic diagram of the structure of the utility model in a top view.
[0013] In the figure: 1—riser tube body, 2—riser tube heat shield, 3—connecting flange, 4—riser tube base, 5—furnace top carbonization chamber, 6—locking bolts, 7—refractory mud layer, 8—steel ring, 9—damaged opening, 10—steel wire, 11—prefabricated lining block, 12—riser tube base body, 13—lining. DETAILED DESCRIPTION
[0014] The following will be combined with the accompanying drawings of the utility model to clearly and completely describe the technical solution of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when used, which is only for the convenience of describing the utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0015] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0016] See also Figure 1 , Figure 2 The utility model is an online repair structure for a riser base, comprising a damaged riser base body 12, a damaged opening 9 on the riser base body, an inner lining 13 made of refractory bricks on the inner wall of the riser base body, the refractory bricks in the lining described in the utility model are in the shape of small blocks of 150mm×80mm×40mm, a circle of steel ring 8 is provided on the outer side of the riser base body, and the steel ring surrounds the riser base body in the middle, further, the steel ring described in the utility model is assembled by two semicircular steel rings to form an integral steel ring, and the two ends of the two semicircular steel rings are joined at the joint by locking bolts 6, which is convenient for later disassembly, and a prefabricated lining block 11 is filled at the inner side of the damaged opening, and a stainless steel wire 10 is connected to the prefabricated lining block, and the steel wire is tightened and fixed on the steel ring, and a refractory mud layer 7 is poured between the steel ring and the outer side wall of the riser base body, and the refractory mud layer is fused into one with the prefabricated lining block.
[0017] Furthermore, the diameter of the steel ring in this embodiment is 100 mm larger than the outer diameter of the riser base body, and the height of the steel ring is 150 mm. This design ensures that the corresponding thickness of the refractory mud layer on the periphery of the riser base body meets the sealing requirements while taking into account the sealing in terms of height.
[0018] The traditional riser related structure is shown in the attached Figure 1 As shown, the structure of the utility model is a repair structure designed for the situation where the riser base is damaged or broken. The utility model can be used for online repair without stopping the machine or the furnace.
[0019] The utility model is specifically implemented in the actual use as follows:
[0020] 1. Cut the lining bricks of the riser base into small pieces of 150mm×80mm×40mm, and fix the prefabricated lining blocks with stainless steel wire for later use;
[0021] 2. According to the diameter of the riser base body, increase 100mm, process a steel ring with a height of 150mm, cut the steel ring into 2 semicircles, and place them outside the riser base body;
[0022] 3. Place the prefabricated small prefabricated lining block into the base through the damaged opening on the riser base body, so that the prefabricated lining block is stuck on the inner wall of the damaged opening, and tighten the steel wire to fix it;
[0023] 4. Pour a refractory mud layer between the riser base body and the steel ring. After leaving it for 1 hour, the steel ring can be removed and the small prefabricated lining blocks can be poked out with a steel chisel;
[0024] 5. Put it into use after the repair is completed.
[0025] The emergence of the utility model realizes the online repair of the riser base, avoids the construction process of dismantling the riser and bridge pipe, effectively reduces risks, reduces replacement costs, reduces the labor intensity of replacement operations, and takes only 2-3 hours, greatly improving efficiency.
Claims
1. An online repair structure for a riser base, comprising a damaged riser base body, a damaged opening on the riser base body, and an inner lining made of refractory bricks on the inner side wall of the riser base body, characterized in that: A steel ring is provided on the outside of the riser base body, which surrounds the riser base body in the middle. A prefabricated lining block is filled at the inner opening of the damaged opening. A stainless steel wire is connected to the prefabricated lining block, which is tightened and fixed on the steel ring. A refractory mud layer is poured between the steel ring and the outer side wall of the riser base body, and the refractory mud layer is fused into one with the prefabricated lining block.
2. The online repair structure for the riser base according to claim 1 is characterized in that: The steel ring is formed by assembling two semicircular steel rings to form an integral steel ring, and the joints at both ends of the two semicircular steel rings are locked by locking bolts.
3. The online repair structure for the riser base according to claim 1 or 2, characterized in that: The diameter of the steel ring is 100 mm larger than the outer diameter of the riser base body, and the height of the steel ring is 150 mm.
4. The online repair structure for the riser base according to claim 1 is characterized in that: The refractory bricks in the lining are in the shape of small blocks of 150 mm×80 mm×40 mm.