A converter vaporization flue heating pipe anti-blocking structure
By designing the height and installing the throttle orifice plate at the inlet port of the heated pipe of the converter vaporized flue, the problem of insufficient circulating water caused by the heated pipe being easily blocked is solved, and the effective cooling of the flue is achieved and the effect of avoiding burning and bursting the pipe is achieved.
Patent Information
- Application Number
- CN202411873491.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-04-04
AI Technical Summary
In the existing converter vaporized flue structure, the heated pipe is easily blocked by debris, resulting in insufficient circulating water, which in turn causes the flue to burn and burst the pipe.
By designing that the inlet port of the heated pipe is not less than two-thirds of the lower box, and installing a throttling orifice plate at the port to ensure even water distribution and avoid blockage of foreign objects.
It effectively prevents the inlet port of the heated pipe from being blocked by foreign objects, ensures sufficient circulating water, ensures effective cooling of the flue, and avoids the risk of burning and bursting the pipe.
Smart Images
Figure CN119753262A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of steel smelting, and in particular to an anti-blocking structure for heating pipes of a converter vaporization flue. Background Art
[0002] The converter vaporization flue is an important equipment in the steel smelting process. Its main function is to cool the high-temperature converter flue gas through the heat pipes in the water-cooled wall, thereby protecting the flue from burning by the high-temperature flue gas.
[0003] In the existing converter vaporization flue structure, it usually includes an upper header and a lower header arranged at intervals, and a water-cooled wall arranged between the upper header and the lower header. The water-cooled wall is composed of a number of vertically arranged and circumferentially arranged heat-receiving tubes, and the two ends of each heat-receiving tube are respectively connected to the corresponding upper header and the lower header.
[0004] The inventors found in the implementation process that the above-mentioned prior art has at least the following defects. Specifically, the inlet end of the heated pipe is usually connected to the bottom of the lower header. During the daily use and operation of the equipment, various debris will be generated inside the lower header. For example, granular foreign matter will be generated during the replacement and installation of the flue, pipe welding, boiler water replenishment, pipe corrosion, etc. These foreign matter will settle at the bottom of the lower header and easily clog the inlet end of the heated pipe. Once the inlet end of the heated pipe is blocked, the amount of circulating water in the heated pipe will be reduced, which will cause insufficient cooling of the flue, and eventually lead to the phenomenon of flue burning and bursting. Summary of the invention
[0005] The embodiment of the present application solves the technical problem in the prior art that the heating pipes are easily blocked, resulting in insufficient circulating water and causing burning and explosion of the pipes, by providing an anti-clogging structure for the heating pipes in the vaporization flue of the converter.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a converter vaporization flue heat pipe anti-blocking structure, including an upper header II and a lower header II arranged at intervals, a water-cooled wall is arranged between the upper header II and the lower header II, and the water-cooled wall includes a plurality of heat pipes II arranged vertically and circumferentially between the upper header II and the lower header II, and the two ends of each heat pipe II are respectively connected with the corresponding upper header II and the lower header II, and after each heat pipe II is inserted into the lower header II from the bottom of the lower header II, the height of its port is not less than two-thirds of the height of the lower header II. Since the granular foreign matter in the lower header II will settle at the bottom of the lower header II, and after the heat pipe II is inserted into the lower header II, the height of its port is not less than two-thirds of the height of the lower header II, when the circulating water enters the heat pipe from the lower header II, the foreign matter will not block the port of the lower header, thereby ensuring that the circulating water in the heat pipe is sufficient, which is beneficial to the cooling of the flue and avoids the burning and bursting of the flue.
[0007] As a further improvement of the above solution, the heat receiving pipe II is inserted vertically upward from the bottom of the lower header II into the interior of the lower header II; thereby ensuring that there is enough space at the top of the port of the heat receiving pipe II for water inlet.
[0008] As a further improvement of the above scheme, after the heated tube II is inserted into the lower header II, a throttling orifice is installed at its port; the throttling orifice can distribute and limit the water flow, so that the water flow distribution in the heated tube II is more uniform, so that the water in the heated tube II can stably absorb the heat of the surrounding environment.
[0009] As a further improvement of the above solution, the throttling orifice plate is welded and fixed to the end of the heated tube II.
[0010] As a further improvement of the above scheme, the diameter of the heated tube II is mm, and the diameter of the throttling hole in the throttling orifice plate is not greater than mm and not less than mm.
[0011] As a further improvement of the above scheme, the pipe diameter at any cross section of the lower header II is mm. After the heated pipe II extends into the lower header II, the distance from its port to the bottom of the lower header II is not less than mm and not greater than mm.
[0012] As a further improvement of the above solution, a sewage pipe is provided at the bottom of the lower header II; the granular foreign matter precipitated at the bottom of the lower header II can be discharged through the sewage pipe.
[0013] As a further improvement of the above solution, an observation window is provided at the upper portion of the lower header II; through the observation window, it can be observed whether there is any foreign matter deposited at the bottom of the lower header II.
[0014] It can be seen from the above technical solutions that the present invention has at least the following technical effects or advantages: Since the granular foreign matter in the lower header II will settle at the bottom of the lower header II, and the height of the port of the heated tube II after being inserted into the lower header II is not less than two-thirds of the height of the lower header II, when the circulating water enters the heated tube from the lower header II, the foreign matter will not block the port of the lower header, thereby ensuring that the circulating water in the heated tube is sufficient, which is beneficial to the cooling of the flue and avoids the burning and bursting of the flue. Since a throttling orifice is installed at the water inlet port of the heated tube II, the water flow can be distributed and limited through the throttling orifice, so that the water flow in the heated tube II can be distributed more evenly, so that the water in the heated tube II can stably absorb the heat of the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work: Figure 1 It is a structural schematic diagram of a converter vaporization flue in the prior art; Figure 2 It is a structural schematic diagram of the vaporization flue of the converter of the present invention; Figure 3 for Figure 2 Local mode diagram at point B in the figure.
[0016] Explanation of the reference numerals: 1. upper header Ⅰ, 2. lower header Ⅰ, 3. heat receiving tube Ⅰ, 4. upper header Ⅱ, 5. lower header Ⅱ, 6. heat receiving tube Ⅱ, 7. throttling orifice plate. DETAILED DESCRIPTION In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0017] In order to better understand the improvements made by the present invention relative to the prior art, before describing the specific implementation methods of the present invention in detail, the prior art mentioned in the background technology part is first described in conjunction with the drawings.
[0018] Figure 1 The structure of the converter vaporization flue in the prior art is shown. Figure 1 As shown, it includes an upper header Ⅰ1 and a lower header Ⅰ2 arranged at intervals, and a water-cooled wall is arranged between the upper header Ⅰ1 and the lower header Ⅰ2. The water-cooled wall includes a plurality of heat-receiving tubes Ⅰ3 arranged vertically and circumferentially between the upper header and the lower header, and both ends of each heat-receiving tube Ⅰ3 are respectively connected to the corresponding upper header Ⅰ1 and lower header Ⅰ2.
[0019] The end of the heat receiving tube Ⅰ3 connected to the lower header Ⅰ2 is the inlet end of the heat receiving tube Ⅰ3, and the end of the heat receiving tube Ⅰ3 connected to the upper header Ⅰ1 is the outlet end Ⅰ of the heat receiving tube Ⅰ3. The flow direction of the circulating water in the heat receiving tube Ⅰ3 is low in and high out, that is, the circulating water enters the heat receiving tube from the lower header, so when the high-temperature converter flue gas passes through the flue of the furnace mouth section, it will exchange heat with the circulating water in the heat receiving tube Ⅰ3, and the high-temperature flue gas transfers heat to the heat receiving tube Ⅰ3, so that the circulating water in the heat receiving tube Ⅰ3 is heated and heated, and then enters the upper header Ⅰ1.
[0020] like Figure 1 As shown in A, the heat receiving pipe Ⅰ3 is connected to the bottom of the lower header Ⅰ2. However, during the daily use and operation of the equipment, debris will be generated inside the lower header Ⅰ2, such as flue replacement and installation, pipe welding, boiler water replenishment, pipe corrosion, etc., which will produce granular foreign matter. These foreign matter will settle at the bottom of the lower header Ⅰ2 and block the inlet end of the heat receiving pipe Ⅰ3, reducing the circulating water volume in the heat receiving pipe Ⅰ3 and insufficient flue cooling, resulting in flue burnout and pipe burst.
[0021] The embodiment of the present invention is to improve the prior art converter vaporization flue structure, which is prone to flue burnout and tube explosion due to insufficient circulating water in the heating tube. The specific embodiment is described in detail below.
[0022] like Figure 2 , Figure 3 As shown, the anti-blocking structure of the heat receiving tube of the converter vaporization flue disclosed in the present invention includes an upper header Ⅱ4 and a lower header Ⅱ5 arranged at intervals, and a water-cooled wall is arranged between the upper header Ⅱ4 and the lower header Ⅱ5, and the water-cooled wall includes a plurality of heat receiving tubes Ⅱ6 arranged vertically and circumferentially between the upper header Ⅱ4 and the lower header Ⅱ5, and the two ends of each heat receiving tube Ⅱ6 are respectively connected with the corresponding upper header Ⅱ4 and the lower header Ⅱ5. Among them, each heat receiving tube Ⅱ6 is inserted into the interior of the lower header Ⅱ5 from the bottom of the lower header Ⅱ5. And after the heat receiving tube Ⅱ6 is inserted into the interior of the lower header Ⅱ5, the height of its port is not less than two-thirds of the lower header. Therefore, even if there are foreign objects precipitated at the bottom of the lower header Ⅱ5, these precipitates will not block the port of the water inlet of the heat receiving tube Ⅱ6.
[0023] The heat receiving tube Ⅱ6 is inserted vertically upward from the bottom of the lower header Ⅱ5 into the interior of the lower header Ⅱ5. This ensures that there is enough space at the top of the port of the heat receiving tube Ⅱ6 for water inlet. The circulating water in the lower header Ⅱ5 enters the heat receiving tube Ⅱ6 from the port of the heat receiving tube Ⅱ6. Therefore, in order to avoid excessive or uneven water flow in each heat receiving tube Ⅱ6, in this embodiment, after the heat receiving tube Ⅱ6 is inserted into the lower header Ⅱ5, a throttling orifice plate 7 is also installed at its port. The throttling orifice plate 7 can distribute and limit the water flow to ensure that the water in the heat receiving tube Ⅱ6 can stably absorb the heat of the surrounding environment, thereby realizing an effective heat exchange process. Specifically in this embodiment, the throttling orifice plate 7 is welded and fixed to the port of the heat receiving tube Ⅱ6, the diameter of the heat receiving tube Ⅱ6 is 38mm, and the diameter of the throttling hole in the throttling orifice plate 7 is not more than 14m and not less than 16mm. In addition, the diameter of the pipe of the lower header II5 at any cross section is 219 mm. After the heated pipe II6 is inserted into the lower header II5, the distance from its port to the bottom of the lower header II5 is not less than 147 mm and not more than 153 mm, and 150 mm is preferred in this embodiment. In this way, the granular foreign matter in the lower header II5 will not block the water inlet port of the heated pipe II6 after settling to its bottom, and during the water inlet process of the heated pipe II6, the throttling orifice 7 can make the water flow in each heated pipe II6 more uniform, avoiding pipe burst.
[0024] In this embodiment, a sewage pipe is provided at the bottom of the lower header II 5, through which granular foreign matter deposited at the bottom of the lower header II 5 can be discharged. An observation window can also be provided at the top of the lower header II 5, through which it can be observed whether there is foreign matter deposited at the bottom of the lower header II 5.
[0025] The anti-blocking structure of the converter vaporization flue heating tube II6 disclosed in the present invention works in the following principle: The circulating water enters the interior of the heat receiving tube Ⅱ6 from the lower header Ⅱ5. When the high-temperature converter flue gas passes through the flue of the furnace mouth section, it will exchange heat with the circulating water in the heat receiving tube Ⅱ6. The high-temperature flue gas transfers heat to the heat receiving tube Ⅱ6, so that the circulating water in the heat receiving tube Ⅱ6 is heated and enters the upper header Ⅱ4. Among them, the height of the port of the heat receiving tube Ⅱ6 in the lower header Ⅱ5 is not less than two-thirds of the lower header Ⅱ5, and a throttling orifice plate 7 is installed at the port of the heat receiving tube Ⅱ6, thereby preventing the foreign matter precipitated in the lower header Ⅱ5 from blocking the port of the heat receiving tube Ⅱ6, and the throttling orifice plate 7 can make the water flow in the heat receiving tube Ⅱ6 more evenly distributed, so that the water in the heat receiving tube Ⅱ6 can stably absorb the heat of the surrounding environment and achieve effective heat exchange.
[0026] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore should not be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in their embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novelties disclosed herein.
Claims
1. A converter vaporization flue heat receiving tube anti-blocking structure, comprising an upper header II (4) and a lower header II (5) arranged at intervals, a water-cooled wall arranged between the upper header II (4) and the lower header II (5), the water-cooled wall comprising a plurality of heat receiving tubes II (6) arranged vertically and circumferentially between the upper header II (4) and the lower header II (5), the two ends of each heat receiving tube II (6) being respectively connected to the corresponding upper header II (4) and the lower header II (5), characterized in that: After each heated pipe II (6) is inserted into the lower header II (5) from the bottom of the lower header II (5), the height of its end is not less than two-thirds of the height of the lower header II (5).
2. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 1 is characterized in that: The heat receiving pipe II (6) is vertically inserted upward from the bottom of the lower header II (5) into the interior of the lower header II (5).
3. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 2 is characterized in that: After the heated tube II (6) is inserted into the lower header II (5), a throttling orifice plate (7) is installed at its port.
4. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 3 is characterized in that: The throttling orifice plate (7) is fixed to the end of the heat receiving tube II (6) by welding.
5. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 4 is characterized in that: The diameter of the heat receiving tube II (6) is 38 mm, and the diameter of the throttling hole in the throttling hole plate (7) is not greater than 14 mm and not less than 16 mm.
6. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 5 is characterized in that: The pipe diameter at any cross section of the lower header II (5) is 219 mm. After the heated pipe II (6) extends into the lower header II (5), the distance from its end to the bottom of the lower header II (5) is not less than 147 mm and not more than 153 mm.
7. A converter vaporization flue heating tube anti-clogging structure according to any one of claims 1 to 6, characterized in that: A sewage pipe is provided at the bottom of the lower header II (5).
8. The anti-blocking structure of the heating tube of the converter vaporization flue according to claim 7 is characterized in that: An observation window is provided on the upper portion of the lower header box II (5).