Tee downcomer

Abstract

The utility model discloses a tee pipe, relates to discharging equipment technical field, it includes the main pipe of vertical setting and the branch pipe of inclined setting, the outer wall lower part of main pipe is equipped with first flange, and the upper portion in main pipe is equipped with the baffle with deslagging hole, the upper portion of baffle is equipped with sealing cover, and the sealing cover is equipped with nitrogen seal pipe with main pipe intercommunication, one end of branch pipe is connected with main pipe, and the other end is equipped with detachable extension pipe. Compared with prior art, the utility model can solve the problem of difficult dismounting and installation, inconvenient blockage cleaning and poor sealing of the existing discharging pipe structure.

Description

Technical Field

[0001] This utility model relates to the field of material feeding equipment technology, and in particular to a three-way material feeding pipe. Background Technology

[0002] In the converter smelting process, the feeding system is responsible for conveying materials such as slagging agents and coolants into the furnace. Its operational stability and sealing performance directly affect production efficiency and environmental performance. Currently, a feeding pipe is used to connect the discharge pipe of the feeding system to the converter's charging port. This feeding pipe has two interfaces, both equipped with flanges for connection. The connection between the feeding pipe and the discharge pipe and charging port is generally achieved using a flange and threaded rod method. However, this feeding pipe structure has revealed several significant problems in practical applications, as follows: 1. Difficult Disassembly and Installation: When replacing or maintaining the feed inlet, workers need to first disassemble the screws at both ends of the feed pipe. However, the space in the converter feed system is usually quite small, limiting the operating space. Furthermore, the screws are exposed to harsh conditions of high temperature and high dust, making them prone to corrosion. This makes disassembly and assembly extremely difficult, wasting a lot of time and significantly increasing the workload for workers. In addition, when reinstalling the feed pipe after maintenance or replacement, the alignment of the feed pipe with the feed system needs to be repeatedly adjusted. Insufficient alignment can easily cause the feed pipe to become misaligned, affecting the smooth flow of material within the pipeline and potentially even causing blockages.

[0003] 2. Inconvenient Material Blockage Cleaning: Due to the corner structure at the flange connection between the feed pipe and the feed port, impurities such as steel slag easily accumulate at this corner during material transportation, gradually forming a blockage. Conventional cleaning methods require cutting the feed pipe first, and then re-welding it after the blockage is cleared. This cleaning method is not only cumbersome and time-consuming, severely impacting the normal production progress of the converter, but the frequent cutting and welding operations also damage the structure of the feed pipe, causing deformation and further exacerbating sealing problems during subsequent use.

[0004] 3. Poor sealing performance: Under long-term high-temperature conditions, the flange connection surface is prone to poor sealing due to thermal deformation, wear, or slag accumulation, resulting in dust and smoke leakage. This leakage problem caused by the traditional structure can hardly meet the current ultra-low emission environmental protection standards. In addition, the traditional structure is prone to aging and failure under high-temperature conditions, requiring frequent replacement and increasing maintenance costs.

[0005] To address these issues, some companies are attempting to optimize their systems by using quick-release flanges or adding sealing coatings. However, these solutions still have significant limitations: quick-release flanges are typically complex in structure, have high manufacturing costs, and are difficult to adapt to the harsh conditions of high temperature and high dust in converter feeding systems; while sealing coatings are prone to wear under long-term material erosion and high temperature, and leakage problems may still occur after a period of use.

[0006] Therefore, there is an urgent need for a simple, easy-to-disassemble, reliable-sealing, and easy-to-clean feed port connection solution to improve converter smelting efficiency and meet increasingly stringent environmental protection requirements. Utility Model Content

[0007] The purpose of this utility model is to provide a three-way discharge pipe that can solve the problems of difficult disassembly and installation, inconvenient material blockage and cleaning, and poor sealing of the current discharge pipe structure.

[0008] To solve the above problems, the technical solution adopted by this utility model is as follows: This three-way discharge pipe includes a vertically arranged main pipe and an inclined branch pipe; the lower part of the outer wall of the main pipe is provided with a first flange, the upper part of the main pipe is provided with a partition with a slag removal hole, a sealing cover is provided above the partition, and a nitrogen sealing pipe connected to the main pipe is provided on the sealing cover; one end of the branch pipe is connected to the main pipe, and the other end is provided with a detachable extension pipe.

[0009] A more specific technical solution than the above-mentioned technical solution may be: the extended tube includes a first connecting section, a transition section and a second connecting section arranged in sequence, wherein the outer diameter of the first connecting section is larger than the outer diameter of the second connecting section.

[0010] Furthermore, the pipe of the first connecting section is provided with an annular boss, and the inner wall of the annular boss is provided with an annular groove, and the annular groove is provided with a first asbestos rope.

[0011] Furthermore, the branch pipe is provided with a second flange on the outer wall at the other end, and a third flange is provided on the outer wall of the second connecting section. The second flange and the third flange are connected by a first screw.

[0012] Furthermore, the connection between the branch pipe and the main pipe is located between the partition and the first flange.

[0013] Furthermore, the top edge of the sealing cover is provided with a plurality of connecting blocks, the outer ends of which are laterally positioned above the pipe wall of the main pipe and connected to the pipe wall of the main pipe via a second screw.

[0014] Furthermore, a second asbestos rope is provided between the sealing cover and the partition.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1. This utility model has a simple structure and is easy to disassemble and assemble. It is connected to the feeding system through an extension tube. The extension tube can move up and down along the discharge pipe of the feeding system, which not only increases the operating space, but also eliminates the need to repeatedly adjust the angle for centering, reducing the difficulty of disassembly and installation. The entire replacement process is fast and safe.

[0016] 2. The three-way structure of this utility model can provide a certain buffer when the material enters the converter. The upper part of the main pipe is provided with a slag cleaning hole. When material blockage occurs, tools can be used directly to clean it through the slag cleaning hole. The cleaning process is convenient, fast and effective, and will not damage the structure of this utility model.

[0017] 3. This utility model adopts a double sealing method of sealing cover plate plus nitrogen gas. Nitrogen gas suppresses the smoke and dust at the discharge port through the main pipe, avoiding the occurrence of ash leakage, smoke leakage and smoke and fire. This prevents the smoke from entering the branch pipe and causing smoke and fire in the extended pipe gap, meeting the current environmental protection requirements for ultra-low emissions. At the same time, compared with the traditional structure, the sealing method of this utility model is more reliable, reduces the replacement frequency of various components, and reduces the maintenance cost of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of point I; Figure 3 yes Figure 1 The left view; Figure 4 yes Figure 1 Top view. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] like Figures 1 to 4 The tee discharge pipe shown includes a vertically arranged main pipe 1 and an inclined branch pipe 2; the lower part of the outer wall of the main pipe 1 is provided with a first flange 3, the upper part of the main pipe 1 is provided with a baffle 4 with a slag removal hole, a sealing cover plate 5 is provided above the baffle 4, and a nitrogen sealing pipe 6 connected to the main pipe 1 is provided on the sealing cover plate 5; one end of the branch pipe 2 is connected to the main pipe 1, and the other end is provided with a detachable extension pipe 7. The connection between the branch pipe 2 and the main pipe 1 is located between the baffle 4 and the first flange 3, and the horizontal position of the end of the branch pipe 2 connected to the main pipe 1 is lower than that of the other end.

[0023] The extended pipe 7 includes a first connecting section 7-1, a transition section 7-2, and a second connecting section 7-3 arranged sequentially. The outer diameter of the first connecting section 7-1 is larger than the outer diameter of the second connecting section 7-3. The pipe inside the first connecting section 7-1 is provided with an annular boss 8, and the inner wall of the annular boss 8 is provided with an annular groove. The annular groove is provided with a first asbestos rope 9. The branch pipe 2 is provided with a second flange 10 on the outer wall at the other end, and the outer wall of the second connecting section 7-3 is provided with a third flange 11. The second flange 10 and the third flange 11 are connected by a first screw.

[0024] The top edge of the sealing cover plate 5 is provided with multiple connecting blocks 12. The outer end of the connecting block 12 is horizontally positioned above the pipe wall of the main pipe 1 and connected to the pipe wall of the main pipe 1 through the second screw. A second asbestos rope 13 is provided between the sealing cover plate 5 and the partition plate 4.

[0025] In this embodiment, there are two nitrogen sealing tubes 6.

[0026] In use, the main pipe 1, located below the first flange 3, is inserted into the discharge port. The first flange 3 is connected to the discharge port flange using a third screw. The discharge pipe 14 of the discharge system is inserted into the extension pipe 7 from the direction of the first connecting section 7-1. The second connecting section 7-3 of the extension pipe 7 is fitted onto the branch pipe 2. Then, the second flange 10 and the third flange 11 are connected together using a first screw. The material can then enter the discharge port from the discharge pipe 14, passing through the branch pipe 2 and the main pipe 1 in sequence. The slag removal hole on the partition plate 4 is used for observation and cleaning of blockages. During daily production, the sealing cover plate 5 is used to seal the slag removal hole. Nitrogen is blown into the pipeline through the nitrogen sealing pipe 6, which can suppress the flame and seal the large amount of smoke and dust generated during the converter blowing process. When the pipeline is blocked by accumulated material, simply remove the sealing cover plate 5, use a tool to enter through the slag removal hole, and clean the pipeline to restore the discharge.

[0027] When replacing or maintaining the discharge port, turn off the nitrogen gas and remove the first screw. Then, use a hand chain hoist to pull the extension pipe 7 upward along the discharge pipe 14 to separate the present invention from the discharge system. Then, remove the second screw, the third screw, and the sealing cover plate 5. Use a crane to lift the tee discharge pipe out, and then lift the discharge port out for replacement or maintenance. After the operation is completed, reinstall the discharge port and all components. During reinstallation, because the tee discharge pipe is separated from the discharge system and the extension pipe 7 has a certain amount of room to move, there is no need to repeatedly adjust the angle. The whole replacement process is quick and safe.

[0028] The first asbestos rope 9 and the second asbestos rope 13 can serve to prevent fire and provide a seal.

[0029] In actual use, the material discharge pipe structure of this utility model has reduced the replacement time from 10 hours to 6 hours when replacing the discharge port, reduced the number of replacement personnel from 6 to 4, and reduced the material blockage cleaning time by 50%. The double sealing method of the sealing cover plate 5 with nitrogen gas avoids the occurrence of ash leakage, smoke leakage and smoke and fire.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tee spout characterized by: It includes a vertically arranged main pipe and an inclined branch pipe; the lower part of the outer wall of the main pipe is provided with a first flange, the upper part of the main pipe is provided with a partition with a slag removal hole, a sealing cover is provided above the partition, and a nitrogen sealing pipe connected to the main pipe is provided on the sealing cover; one end of the branch pipe is connected to the main pipe, and the other end is provided with a detachable extension pipe.

2. The three-way feed pipe according to claim 1, characterized in that: The extended tube includes a first connecting section, a transition section, and a second connecting section arranged in sequence, wherein the outer diameter of the first connecting section is larger than the outer diameter of the second connecting section.

3. The three-way feed pipe according to claim 2, characterized in that: The first connecting section has an annular boss inside the pipe, and an annular groove is provided on the inner wall of the annular boss. A first asbestos rope is provided in the annular groove.

4. The three-way feed pipe according to claim 3, characterized in that: The branch pipe has a second flange on the outer wall at the other end, and the second connecting section has a third flange on the outer wall. The second flange and the third flange are connected by a first screw.

5. The tee feed pipe according to any one of claims 1 to 4, characterized in that: The connection between the branch pipe and the main pipe is located between the partition and the first flange.

6. The three-way feed pipe according to claim 5, characterized in that: The top edge of the sealing cover is provided with multiple connecting blocks. The outer end of the connecting block is horizontally positioned above the pipe wall of the main pipe and is connected to the pipe wall of the main pipe through a second screw.

7. The three-way feed pipe according to claim 6, characterized in that: A second asbestos rope is provided between the sealing cover and the partition.

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