Internal maintenance device for converter flue
By designing an internal maintenance device for the converter flue, the problem of water leakage caused by corrosion of the cooling water pipes inside the flue was solved, providing a safe maintenance environment and improving maintenance efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENXI BEIYING IRON & STEEL GROUP
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-28
AI Technical Summary
The cooling water pipes inside the converter flue are severely corroded, leading to frequent leaks. This makes it difficult and dangerous for maintenance personnel to enter the flue, resulting in low maintenance efficiency.
A maintenance device for the inside of a converter flue was designed, including a cage, support pedals, a movable flap, chains, lifting ropes, and lighting. The cage enters the flue through a manhole, and the movable flap can be flipped to expand the working space. A welding rod storage box is provided inside the cage to ensure personnel safety and convenient operation.
It enables maintenance personnel to operate flexibly inside the flue, improving maintenance efficiency, shortening maintenance time, reducing costs, and enhancing operational safety.
Smart Images
Figure CN224172782U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of converter technology, and specifically relates to an internal maintenance device for converter flue. Background Technology
[0002] The converter is equipped with flue facilities of different types and specifications, such as moving section, fixed section, middle section and end section. Due to the high ambient temperature around the converter body during the blowing process, the quality of the cooling water, high temperature and high pressure, acid corrosion and other factors, the cooling water pipes (DN50) in each level of flue are severely corroded, with many small cracks on the surface, resulting in frequent water leakage, low production efficiency, serious water loss in the pump room, and a great waste of resources. It is also difficult and dangerous for maintenance personnel to enter the flue for welding repair. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a maintenance and protection device for the inside of a converter flue, which can effectively solve the problems of difficulty for maintenance personnel to enter the flue, high risk, and long processing time.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A maintenance device for the interior of a converter flue, the device being vertically inserted into the flue through a manhole, includes a cage, a support pedal, a movable flap, a chain, and a hoisting rope. The lower part of the cage is equipped with a support pedal, and one side of the support pedal has a cage outlet. The cage outlet has a movable flap that can be flipped outwards. The lower side of the movable flap is hinged to the cage, and the upper side of the movable flap is connected to the frame at the top of the cage outlet via a chain. When the chain is taut, the movable flap is flush with the support pedal. When the movable flap is closed, the top of the movable flap is locked to the frame of the cage outlet via a safety pin. The cage is equipped with an internal light, and the top of the cage is connected to the hoisting rope.
[0006] The height of the cage opening is not less than 1.8 meters.
[0007] The lower side of the movable flap is connected to the lower frame of the cage opening via a hinge pin.
[0008] The top of the movable flap is provided with a locking ring corresponding to the edge of the cage opening, and a movable safety pin is provided inside the locking ring.
[0009] The lighting lamp is snapped into the clamp of the lighting support, which is fixedly connected to the inside of the cage above the outlet.
[0010] The cage is internally fixedly connected to a welding rod storage box.
[0011] The maximum distance of the cross-section of the cage is less than the diameter of the manhole in the flue.
[0012] Compared with existing technologies, the beneficial effects of this utility model are:
[0013] This invention allows maintenance personnel to enter the flue for repairs, enabling flexible operation and ensuring their personal safety during the work process. The movable flap expands the working space, while the included lighting and welding rod storage box facilitate the work. This invention shortens maintenance time, improves efficiency, reduces costs, and enhances personnel safety during operations. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the present invention.
[0015] Figure 2 This is a schematic diagram of the structure when the movable flap is closed.
[0016] Figure 3 This is a schematic diagram of the connection of the lighting support.
[0017] Figure 4 This is a connection diagram of the welding rod storage box.
[0018] In the diagram: 1. Flue; 2. Manhole; 3. Cage; 4. Supporting pedal; 5. Movable flap; 6. Chain; 7. Hoisting rope; 8. Cage outlet; 9. Safety pin; 10. Lighting lamp; 11. Hinge pin; 12. Locking ring; 13. Lighting bracket; 14. Clamp; 15. Welding rod storage box. Detailed Implementation
[0019] In the description of this utility model, it should be understood that the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] like Figures 1-4A maintenance device for the interior of a converter flue is disclosed. The device is vertically inserted into the interior of the flue 1 through a manhole 2. It includes a cage 3, a support pedal 4, a movable flap 5, a chain 6, and a hoisting rope 7. The lower part of the cage 3 is provided with the support pedal 4, and one side of the support pedal 4 is provided with an outlet 8. The outlet 8 is provided with a movable flap 5 that can be flipped outward. The lower side of the movable flap 5 is hinged to the cage 3, and the upper side of the movable flap 5 is connected to the frame at the top of the outlet 8 through the chain 6. When the chain 6 is straightened, the movable flap 5 is flush with the support pedal 4. When the movable flap 5 is closed, the top of the movable flap 5 is locked to the frame of the outlet 8 through a safety pin 9. The interior of the cage 3 is provided with a lighting lamp 10, and the top of the cage 3 is connected to the hoisting rope 7.
[0022] The height of the outlet 8 is not less than 1.8 meters.
[0023] The lower side of the movable flap 5 is connected to the lower frame of the cage opening 8 via a hinge pin 11.
[0024] The top of the movable flap 5 and the edge of the cage opening 8 are respectively provided with locking rings 12, and the locking rings 12 are provided with movable safety pins 9.
[0025] The lighting lamp 10 is snapped into the clamp 14 of the lighting support 13, and the lighting support 13 is fixedly connected to the inside of the hanging cage 3 above the outlet 8.
[0026] The cage 3 is internally fixedly connected to a welding rod storage box 15.
[0027] The maximum distance of the cross-section of the cage 3 is less than the diameter of the manhole 2 of the flue 1.
[0028] Work process:
[0029] The crane is connected to the hoisting rope, and personnel enter the cage 3. External support personnel can operate the overhead crane to send the cage 3 from the manhole 2 into the designated welding location inside the flue 1 according to the specific location of the water leakage in the flue section. After descending to the designated height, the safety pin 9 is unlocked, the chain 6 is slowly released, and the movable flap 5 is flipped and extended horizontally to facilitate personnel to walk and move within the specified safe range and ensure the welding safety distance.
[0030] To make the objectives, technical solutions, and technical effects of this utility model clearer, the technical solutions in the embodiments of this utility model are now described clearly and completely. However, the embodiments described below are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0031] Example 1
[0032] A converter flue internal maintenance device, the device is vertically inserted into the flue 1 through the manhole 2 of the flue 1, including a cage 3, a support pedal 4, a movable flap 5, a chain 6, and a lifting rope 7. The lower part of the cage 3 is provided with the support pedal 4, and one side of the support pedal 4 is provided with an outlet 8, the height of which is 1.8 meters. The outlet 8 is equipped with a movable flap 5 that can be flipped outwards. The lower side of the movable flap 5 is connected to the lower frame of the outlet 8 via a hinge pin 11, and the upper side of the movable flap 5 is connected to the top frame of the outlet 8 via a chain 6. When the chain 6 is straightened, the movable flap 5 is flush with the support pedal 4. The top of the movable flap 5 and the frame of the outlet 8 are respectively equipped with locking rings 12, and the locking rings 12 are equipped with movable safety pins 9. When the movable flap 5 is closed, the top of the movable flap 5 is locked to the frame of the outlet 8 via the safety pins 9. The cage 3 is equipped with a lighting lamp 10, which is snapped into the clamp 14 of the lighting support 13. The lighting support 13 is fixedly connected to the inside of the cage 3 above the outlet 8. The top of the cage 3 is connected to a hoisting rope 7.
[0033] Example 2
[0034] A maintenance device for the interior of a converter flue, the device being vertically inserted into the flue 1 through a manhole 2, includes a cage 3, a support platform 4, a movable flap 5, a chain 6, and a lifting rope 7. The cage 3 is constructed of welded DN20mm carbon steel pipe, with a bottom 60cm... 2 The height is 15m, and the maximum distance of the cross section of the cage 3 is less than the diameter of the manhole 2 of the flue 1.
[0035] The lower part of the cage 3 is provided with a support pedal 4, and one side of the support pedal 4 is provided with an outlet 8, which is 1.8 meters high. The outlet 8 is provided with a movable flap 5 that can be flipped outward. The lower side of the movable flap 5 is connected to the lower frame of the outlet 8 through a hinge pin 11, and the upper side of the movable flap 5 is connected to the top frame of the outlet 8 through a chain 6. When the chain 6 is straightened, the movable flap 5 is flush with the support pedal 4. The top of the movable flap 5 and the frame of the outlet 8 are respectively provided with locking rings 12. The locking rings 12 are provided with movable safety pins 9. When the movable flap 5 is closed, the top of the movable flap 5 is locked to the frame of the outlet 8 through the safety pins 9.
[0036] The cage 3 is internally fixedly connected to a welding rod storage box 15. A lighting lamp 10 is installed inside the cage 3, and the lighting lamp 10 is clipped into a clamp 14 of a lighting support 13, which is fixedly connected to the inside of the cage 3 above the outlet 8. A hoisting rope 7 is connected to the top of the cage 3.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and basic spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A maintenance device for the interior of a converter flue, characterized in that, The device enters the flue vertically through the manhole and includes a cage, a support pedal, a movable flap, a chain, and a hoisting rope. The lower part of the cage has a support pedal, and one side of the support pedal has a cage outlet. The cage outlet has a movable flap that can be flipped outward. The lower side of the movable flap is hinged to the cage, and the upper side of the movable flap is connected to the frame at the top of the cage outlet via a chain. When the chain is straightened, the movable flap is flush with the support pedal. When the movable flap is closed, the top of the movable flap is locked to the frame of the cage outlet via a safety pin. The cage is equipped with a light, and the top of the cage is connected to the hoisting rope.
2. The converter flue internal maintenance device according to claim 1, characterized in that, The height of the cage opening is not less than 1.8 meters.
3. The converter flue internal maintenance device according to claim 1, characterized in that, The lower side of the movable flap is connected to the lower frame of the cage opening via a hinge pin.
4. The converter flue internal maintenance device according to claim 1, characterized in that, The top of the movable flap is provided with a locking ring corresponding to the edge of the cage opening, and a movable safety pin is provided inside the locking ring.
5. The converter flue internal maintenance device according to claim 1, characterized in that, The lighting lamp is snapped into the clamp of the lighting support, which is fixedly connected to the inside of the cage above the outlet.
6. The internal maintenance device for a converter flue according to claim 1, characterized in that, The cage is internally fixedly connected to a welding rod storage box.
7. The converter flue internal maintenance device according to claim 1, characterized in that, The maximum distance of the cross-section of the cage is less than the diameter of the manhole in the flue.