Drainage device, converter gas recovery pipe network and converter gas recovery system
By designing a screw-connected funnel-separated drainage device, the problem of funnel blockage in converter gas pipelines was solved, achieving efficient cleaning of hard scale and ensuring the normal collection and discharge of condensate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SHOUGANG CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-08
AI Technical Summary
In the existing technology, the funnel connection of the converter gas pipeline is blocked by hard scale, resulting in poor cleaning effect and affecting the collection and drainage function of condensate.
Design a drainage device with a funnel divided into an upper drainage section and a lower drainage section, which are connected by screws. This allows for disassembly and high-pressure water flushing. Combined with the difference in the inner diameter of the upper and lower chambers, it enables flexible angle flushing and high cleaning efficiency.
It effectively cleans hard scale inside the funnel, ensuring the normal operation of condensate collection and drainage functions, avoiding blockages, and improving cleaning efficiency and effectiveness.
Smart Images
Figure CN224215128U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of gas pipeline drainage technology, specifically relating to a drainage device, a converter gas recovery pipeline network, and a converter gas recovery system. Background Technology
[0002] Converter steelmaking produces a large amount of wet gas, which is transported through pipelines to storage tanks and various users. At regular intervals along the wet gas pipeline, a gas drainer is installed to allow condensate from the gas pipeline to flow through a downpipe into the drainer, and then be discharged. This prevents blockages in the gas pipeline, equipment malfunctions, and even potential safety hazards. The downpipe is connected to the gas pipeline via a funnel connection. The funnel collects the condensate from the gas pipeline. The open end of the funnel is welded to the gas pipeline, while the constricted end is welded to the downpipe. The other end of the downpipe is connected to a gate valve (the valve's operation controls the water flow).
[0003] Because the gas produced by the converter contains impurities such as iron oxide particles, lime, and fluorite, and the condensate is mostly hard water containing calcium and magnesium, which are prone to scaling, after the funnel has been running for a long time, the impurities and calcium and magnesium in the condensate form hard scale on the inner wall of the funnel, the constricted area at the bottom of the funnel, and inside the downpipe. As the scale gradually increases, a large amount of scale will block the inside of the funnel, the constricted area at the bottom, and the downpipe. In related technologies, the gate valve is removed, and the downpipe and the inside of the funnel are cleaned in reverse through the drain outlet at the lower end of the removed part. However, the cleaning effect is poor, affecting the collection and drainage functions of the funnel. Summary of the Invention
[0004] To address the current technical problem of poor cleaning effect of hard scale in hoppers, this application provides a drainage device, a converter gas recovery pipeline network, and a converter gas recovery system.
[0005] In a first aspect of this application, a drainage device is provided for draining condensate from a gas pipeline, the drainage device comprising:
[0006] A drainage funnel is provided with a funnel cavity. The drainage funnel includes an upper drainage section and a lower drainage section arranged sequentially from top to bottom. The upper drainage section is used to connect to the gas pipeline and has a frustum-shaped upper chamber. The lower drainage section has a frustum-shaped lower chamber. The upper drainage section and the lower drainage section are screwed together to form the funnel cavity. The bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter. The top inner diameter of the lower chamber is the same as the bottom inner diameter of the upper chamber.
[0007] A drain is connected to the bottom of the lower drain section.
[0008] In some embodiments, the bottom of the upper drainage section is provided with an upper connecting ring, the top of the lower drainage section is provided with a lower connecting ring, and the drainage funnel further includes a plurality of threaded fasteners arranged sequentially at intervals along the circumference of the drainage funnel, the threaded fasteners being connected to the upper connecting ring and the lower connecting ring.
[0009] In some embodiments, the threaded fastener includes a screw and a nut, the screw being welded to the upper connecting ring, the lower connecting ring having the same number of through holes as the connecting parts and corresponding to each other, the lower end of the screw passing through the corresponding through hole and being connected to the nut.
[0010] In some embodiments, the threaded fastener includes screws and nuts, the upper connecting ring has a first through hole that is the same number as the number of screws and corresponds to the number of screws, and the lower connecting ring has a second through hole that is the same number as the number of screws and corresponds to the number of screws.
[0011] The nut is welded to the upper connecting ring and coaxially connected to the corresponding first through hole; the upper end of the screw passes through the corresponding second through hole and the first through hole in sequence, and is connected to the corresponding nut.
[0012] In some embodiments, both the upper connecting ring and the lower connecting ring are horizontally arranged, and a sealing ring is provided between the upper connecting ring and the lower connecting ring.
[0013] In some embodiments, the bottom inner diameter of the upper chamber is 70mm to 90mm.
[0014] In some embodiments, the height of the upper drainage section is no greater than 30 mm.
[0015] In some embodiments, a drain valve is also included, wherein a downcomer is provided at the bottom of the lower drain section, and the drain valve is screwed to the downcomer and the drainer.
[0016] In a second aspect of this application, a converter gas recovery pipeline network is provided, comprising:
[0017] Gas pipelines are used to transport converter gas.
[0018] The first aspect of the drainage device includes multiple drainage devices, which are spaced apart on the gas pipeline, and the upper drainage section is welded to the gas pipeline.
[0019] In a third aspect of this application, a converter gas recovery system is provided, comprising:
[0020] Converter;
[0021] The second aspect of the converter gas recovery pipeline network includes a fume hood located above the converter opening.
[0022] The drainage device provided according to the embodiments of this application includes a drainage funnel and a drainer. Wherein:
[0023] The drainage funnel has a funnel cavity. The drainage funnel includes an upper drainage section and a lower drainage section arranged sequentially from top to bottom. The upper drainage section is used to connect to the gas pipeline and has a frustum-shaped upper chamber. The lower drainage section has a frustum-shaped lower chamber. The upper drainage section and the lower drainage section are screwed together to form the funnel cavity. The bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter. The top inner diameter of the lower chamber is the same as the bottom inner diameter of the upper chamber. The drainer is connected to the bottom of the lower drainage section.
[0024] The drainage funnel is divided into an upper drainage section and a lower drainage section, with the upper and lower drainage sections not connected by bolts. This allows for easy disassembly of the upper and lower drainage sections in case of blockage by hard scale, enabling separate high-pressure water flushing of the upper and lower chambers. When flushing the upper chamber, water can be flushed through the bottom opening of the upper drainage section. Since the bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter (meaning the bottom inner diameter is closer to the top inner diameter), and the high-pressure water pipe diameter is smaller than the bottom inner diameter of the upper chamber, the high-pressure water pipe can enter the upper chamber through the bottom opening. The impact angle of the high-pressure water can be flexibly adjusted, allowing direct flushing of the inclined walls of the upper chamber, resulting in a wider impact range, higher cleaning efficiency, and better cleaning effect. When flushing the lower chamber, high-pressure water is flushed through the top opening of the lower drainage section, ensuring good cleaning effect and high efficiency.
[0025] The top inner diameter of the lower chamber is the same as the bottom inner diameter of the upper chamber. At the connection between the upper and lower chambers, the wall of the funnel cavity is smooth, which is more conducive to collecting condensate and avoids the formation of steps that cause local accumulation of hard scale. Attached Figure Description
[0026] Figure 1 A schematic diagram of the drainage device in one or more embodiments of this application is shown.
[0027] Figure 2 A schematic diagram of the upper drainage section is shown.
[0028] Explanation of reference numerals in the attached figures:
[0029] 100-Drainage funnel, 110-Upper drainage section, 111-Upper connecting ring, 120-Lower drainage section, 121-Lower connecting ring, 122-Lower chamber, 130-Downcomer, 140-Threaded fastener, 141-Screw, 150-Sealing ring, 101-Function funnel cavity, 200-Drain valve, 300-Drainer; 500-Gas pipeline. Detailed Implementation
[0030] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0031] In related technologies, the diameter of gas pipelines ranges from 80mm to 3m, and the corresponding inner diameter of the funnel that matches the gas pipeline varies greatly. For example, when the gas pipeline diameter is 2.2m, the lower diameter of the funnel should not be less than 125mm; when the gas pipeline diameter is 150mm, the lower diameter of the funnel can be 50mm. The funnel is a one-piece structure. When hard scale accumulates and clogs the funnel cavity, the scale formed by impurities and calcium and magnesium substances is hard scale. The diameter of the drain outlet is much smaller than the top inner diameter of the funnel cavity, especially for funnels with a small lower diameter. Therefore, even if high-pressure water is injected into the funnel through the lower drain outlet, it is difficult to reach the cavity wall near the top, resulting in incomplete cleaning. This reduces the funnel's water collection and drainage functions, and may even lead to the funnel becoming completely blocked and unable to drain water.
[0032] According to a first aspect of this application, a drainage device is provided that can drain condensate from gas pipelines and facilitate the cleaning of hard scale inside the funnel, ensuring the funnel's water collection and drainage functions.
[0033] This application is described below with reference to the accompanying drawings and specific embodiments:
[0034] Please see Figure 1 The drainage device provided in this application embodiment includes a drainage funnel 100 and a drainer 300. Wherein:
[0035] The drainage funnel 100 is provided with a funnel cavity 101. The drainage funnel 100 includes an upper drainage section 110 and a lower drainage section 120 arranged sequentially from top to bottom. The upper drainage section 110 is used to connect to the gas pipeline 500 and is provided with a frustum-shaped upper chamber (not shown in the figure). The lower drainage section 120 is provided with a frustum-shaped lower chamber 122. The upper drainage section 110 and the lower drainage section 120 are screwed together to form the funnel cavity 101. The bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter. The top inner diameter of the lower chamber 122 is the same as the bottom inner diameter of the upper chamber. The drainer 300 is connected to the bottom of the lower drainage section 120.
[0036] The drainage funnel 100 is divided into an upper drainage section 110 and a lower drainage section 120, which are bolted together. This allows the upper and lower drainage sections 110 and 120 to be disassembled in case of hard scale blockage within the drainage funnel 100, enabling high-pressure water flushing of the upper and lower chambers 122. Since the bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter (meaning the bottom inner diameter is closer to the top inner diameter), and the high-pressure water pipe diameter is smaller than the bottom inner diameter of the upper chamber, the high-pressure water pipe can enter the upper chamber from the bottom opening. Furthermore, the impact angle of the high-pressure water can be flexibly adjusted, allowing direct flushing of the inclined walls of the upper chamber, resulting in a wider impact range, higher cleaning efficiency, and better cleaning effect. After the lower drain section 120 separates from the upper drain section 110, high-pressure water flows through the top opening of the lower drain section 120 to flush the lower chamber 122. The high-pressure water pipe can be flexibly rotated to flush the inclined wall of the lower chamber 122, resulting in good cleaning effect and high cleaning efficiency. The top inner diameter of the lower chamber 122 is the same as the bottom inner diameter of the upper chamber. At the connection between the upper and lower chambers 122, the wall of the funnel cavity 101 is smooth, which is more conducive to collecting condensate and avoids the formation of steps that cause local accumulation of hard scale. The drainer 300 can be a water-sealed gas drainer 300 or a dry drainer 300, etc.
[0037] In some embodiments, the upper drainage section 110 has an upper connecting ring 111 at its bottom, and the lower drainage section 120 has a lower connecting ring 121 at its top. The drainage funnel 100 also includes a plurality of threaded fasteners 140 arranged sequentially and at intervals along the circumference of the drainage funnel 100. The threaded fasteners 140 are connected to the upper connecting ring 111 and the lower connecting ring 121. In specific implementations, both the upper connecting ring 111 and the lower connecting ring 121 can be flanges, and the threaded fasteners 140 are used to complete the detachable connection between the upper drainage section 110 and the lower drainage section 120. In other embodiments, the upper drainage section 110 and the lower drainage section 120 can also be threaded together. For example, an external thread is provided on the outer periphery of the upper drainage section 110, and an internal thread is provided on the cavity wall of the lower drainage section 120. The lower drainage section 120 is threadedly connected to the outside of the upper drainage section 110. Of course, an internal thread can be provided on the cavity wall of the upper drainage part 110, and an external thread can be provided on the outer periphery of the lower drainage part 120, with the lower drainage part 120 threadedly connected to the upper drainage part 110.
[0038] In some embodiments, the threaded fastener 140 includes a screw 141 and a nut (not shown in the figure). See [reference needed] Figure 2The screw 141 is welded to the upper connecting ring 111. The lower connecting ring 121 has through holes that correspond one-to-one with the number of connecting parts. The lower end of the screw 141 passes through the corresponding through hole and is connected to the nut. Since the difference between the inner and outer diameters of the upper chamber is small, the height of the upper connecting part is relatively small, and a bolt connection is used. However, the space between the upper connecting ring 111 and the gas pipe 500 is limited, making connection difficult. By welding the screw 141 to the upper connecting ring 111 first, each time disassembly is performed, only the lower drain part 120 needs to be moved upwards so that the screw 141 is inserted into the corresponding through hole of the lower connecting ring 121, and then the nut is tightened to the screw 141. The space below the lower connecting ring is larger, providing more room for nut rotation and making disassembly more convenient.
[0039] In other embodiments, the threaded fastener 140 includes a screw and a nut. The upper connecting ring 111 has a first through hole corresponding to the number of screws, and the lower connecting ring 121 has a second through hole corresponding to the number of screws. The nut is welded to the upper connecting ring 111 and coaxially communicates with the corresponding first through hole. The upper end of the screw passes through the corresponding second through hole and the first through hole in sequence, and is connected to the corresponding nut. By welding the nut to the upper connecting ring 111 in advance, and then rotating the screw from below the lower connecting ring 121, the connection and disassembly of the upper drainage part 110 and the lower drainage part 120 can be achieved, providing a large operating space and making disassembly more convenient.
[0040] In some embodiments, please refer to Figure 1 Both the upper connecting ring 111 and the lower connecting ring 121 are horizontally arranged, and a sealing ring 150 is provided between the upper connecting ring 111 and the lower connecting ring 121. This can improve the connection sealing between the upper drainage part 110 and the lower drainage part 120. In some embodiments, the upper connecting ring 111 and the lower connecting ring 121 can both be arranged in an inverted funnel shape, which can increase the dimension of the edge of the upper connecting ring 111 and the gas pipeline 500 along the height direction, and provide a larger space for disassembly and operation.
[0041] In some embodiments, the height of the upper drain section 110 is no greater than 30 mm. The upper drain section 110 cannot be removed after being installed on the gas pipeline 500. Its small size (not exceeding 30 mm) allows for easier high-pressure water flushing of all parts of the upper chamber, resulting in good flushing effect and high flushing efficiency. In other embodiments, the height of the upper drain section 110 can be greater than 30 mm, for example, 40 mm, while still allowing for high-pressure water flushing.
[0042] In some embodiments, the bottom inner diameter of the upper chamber is 70mm to 90mm. The larger the bottom inner diameter of the upper chamber, the more beneficial it is for high-pressure water to flush the chamber wall, resulting in high flushing efficiency and good flushing effect.
[0043] In some embodiments, please refer to Figure 1 The drainage device also includes a drain valve 200. A downcomer 130, also known as a drain pipe, is located at the bottom of the lower drainage section 120. The drain valve 200 is screwed to the downcomer 130 and the drainer 300. The drain valve 200 allows the downcomer 130 to be opened or closed to allow the pipeline to be connected or shut off. The drain valve 200 and the downcomer 130 are connected by a flange and bolts, and both are detachable. The drain valve 200 and the drainer 300 can also be detachably connected by a flange and bolts.
[0044] The drainage funnel 100 provided in this application is divided into an upper drainage section 110 and a lower drainage section 120, and the upper drainage section is not bolted to the lower drainage section. This allows for the separation of the upper drainage section 110 and the lower drainage section 120 in case of blockage by hard scale within the drainage funnel 100, enabling high-pressure water flushing of the upper and lower chambers 122 separately. When flushing the upper chamber, flushing can be done through the bottom opening of the upper drainage section 110. Since the bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter (meaning the bottom inner diameter is closer to the top inner diameter), the high-pressure water hose can be flexibly adjusted at an angle when flushing the upper chamber with high-pressure water from the bottom opening, resulting in a wider impact range, higher cleaning efficiency, and better cleaning effect. Similarly, when flushing the lower chamber 122, the high-pressure water hose can be flexibly adjusted at an angle, allowing high-pressure water to be directly directed from the top opening of the lower drainage section 120 onto the inclined wall of the lower chamber 122, resulting in good cleaning effect and high cleaning efficiency. When flushing the lower chamber 122, the high-pressure water can be made as coaxial as possible with the lower drain section 120, and then tilted slightly to clean the inner wall of the downcomer 130. Alternatively, the drain valve 200 can be removed and high-pressure water can be sprayed into the lower end opening of the downcomer 130 to clean it.
[0045] Based on the same technical concept as the first aspect, the second aspect of this application provides a converter gas recovery pipeline network.
[0046] The converter gas recovery pipeline network provided in this application includes a gas pipeline 500 and a drainage device according to any embodiment of the first aspect. The gas pipeline 500 is used to transport converter gas; multiple drainage devices are provided, which are distributed at intervals along the gas pipeline 500, and the upper drainage section 110 is welded to the gas pipeline 500. Drainage devices need to be installed at regular intervals to drain the condensate in the gas pipeline 500.
[0047] Based on the same technical concept as the second aspect, the third aspect of this application provides a converter gas recovery system.
[0048] The converter gas recovery system provided in this application includes a converter and a converter gas recovery pipeline network according to any embodiment of the second aspect.
[0049] The converter gas pipeline network is equipped with a fume hood located above the converter inlet. High-temperature gas containing dust generated during the converter smelting process is collected by the fume hood and enters the converter gas pipeline network. During operation, condensate forms on the inner wall of the pipeline, which is then discharged through a drainage system.
[0050] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0052] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0053] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0054] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A drainage device for draining condensate from a gas pipeline, characterized in that, The drainage device includes: A drainage funnel is provided with a funnel cavity. The drainage funnel includes an upper drainage section and a lower drainage section arranged sequentially from top to bottom. The upper drainage section is used to connect to the gas pipeline and has a frustum-shaped upper chamber. The lower drainage section has a frustum-shaped lower chamber. The upper drainage section and the lower drainage section are screwed together to form the funnel cavity. The bottom inner diameter of the upper chamber is 8mm to 12mm smaller than the top inner diameter. The top inner diameter of the lower chamber is the same as the bottom inner diameter of the upper chamber. A drain is connected to the bottom of the lower drain section.
2. The drainage device according to claim 1, characterized in that, The bottom of the upper drainage section is provided with an upper connecting ring, and the top of the lower drainage section is provided with a lower connecting ring. The drainage funnel also includes a plurality of threaded fasteners arranged sequentially at intervals along the circumference of the drainage funnel. The threaded fasteners are connected to the upper connecting ring and the lower connecting ring.
3. The drainage device according to claim 2, characterized in that, The threaded fastener includes a screw and a nut. The screw is welded to the upper connecting ring. The lower connecting ring has the same number of through holes as the screw and they correspond one-to-one. The lower end of the screw passes through the corresponding through hole and is connected to the corresponding nut.
4. The drainage device according to claim 2, characterized in that, The threaded fastener includes screws and nuts. The upper connecting ring has a first through hole that is the same number as the number of screws and corresponds to each other. The lower connecting ring has a second through hole that is the same number as the number of screws and corresponds to each other. The nut is welded to the upper connecting ring and is located above the upper connecting ring. The nut is coaxially connected to the corresponding first through hole. The upper end of the screw passes through the corresponding second through hole and the first through hole in sequence and is connected to the corresponding nut.
5. The drainage device according to claim 2, characterized in that, Both the upper connecting ring and the lower connecting ring are horizontally arranged, and a sealing ring is provided between the upper connecting ring and the lower connecting ring.
6. The drainage device according to any one of claims 1-5, characterized in that, The bottom inner diameter of the upper chamber is 70mm to 90mm.
7. The drainage device according to any one of claims 1-5, characterized in that, The height of the upper drainage section is no more than 30mm.
8. The drainage device according to any one of claims 1-5, characterized in that, It also includes a drain valve, and the bottom of the lower drain section is provided with a downcomer pipe. The drain valve is screwed to the downcomer pipe and the drainer.
9. A converter gas recovery pipeline network, characterized in that, include: Gas pipelines are used to transport converter gas. The drainage device according to any one of claims 1-8, wherein the drainage device is provided in multiple parts, the multiple drainage devices are distributed at intervals on the gas pipeline, and the upper drainage part is welded to the gas pipeline.
10. A converter gas recovery system, characterized in that, include: Converter; The converter gas recovery pipeline network of claim 9 is provided with a fume hood located above the furnace opening of the converter.