Sliding device for replacing converter steam drum in original steel plant
By setting up slip beams and cantilever platforms in the steelmaking plant, the overall slip installation of the converter drum is achieved, and problems such as high construction difficulty, low installation efficiency and many safety hazards in the existing technology are solved, and an efficient, safe and low-cost installation process is achieved.
Patent Information
- Application Number
- CN202421190714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the replacement and installation of converter drums in steelmaking buildings, the existing technology has problems such as high construction difficulty, low installation efficiency, many safety hazards, great impact on other production lines, and high construction costs.
By setting up a sliding beam on the eighth floor platform of the factory, the sliding beam extends out of the factory gable to form a cantilever platform. The steam drum is hoisted onto the sliding beam of the cantilever platform with a crane outside the factory, and the steam drum is sliding and installed in place as a whole.
The installation process is simplified, the installation efficiency is improved, the safety risks is reduced, the impact on other production lines is minimized, and the construction costs are reduced.
Smart Images
Figure CN222593252U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of equipment installation, and particularly relates to a converter drum sliding device for replacing an original steelmaking plant. Background Art
[0002] During the replacement and installation of large equipment such as converter drums and deaerators in the steelmaking plant, the key construction process during the project implementation was the removal of the drum installed on the 8th floor (elevation 57.1m) platform and the installation of a new drum. Due to the small space inside the plant, the high installation elevation of the drum, the diameter of the drum is 2 meters, the length is 7 meters, the volume is large, and the weight of the drum is nearly 60 tons, so the construction is very difficult.
[0003] There are two main methods for replacing the converter drum in the original steelmaking plant. One is to transport the drum in sections to the site and assemble and weld it on site. The problem is that it takes too long to complete the annual maintenance plan on time, and it is impossible to ensure that production will resume on time. In addition, as part of the boiler system, the drum has extremely strict welding quality requirements, and the welds must be 100% qualified by flaw detection and pressure test. Since the on-site assembly and welding conditions cannot be compared with those of the manufacturer, the assembly accuracy and welding quality are difficult to guarantee. Another method is to remove the original roof and then directly use a large crane to hoist the drum as a whole to the site. The common problems of these two existing methods are that the original plant structure needs to be dismantled and restored to a large extent, which is a large workload. At the same time, the removal of the roof has a great impact on other converter equipment that is still in production. There are many uncontrollable safety factors, and a large number of crane shifts are required, which has a high construction cost.
[0004] There are also related patent technologies in China. The method for putting the converter drum in place after the plant is closed is to set a lifting point on the roof beam just above the drum, and use three sets of winch units or hydraulic lifting devices to complete the vertical lifting and horizontal translation of the drum in the form of aerial relay, thereby completing the work of putting the drum in place. The construction steps are: 1. Structural reinforcement; 2. Lifting device setting; 3. Horizontal drum span; 4. Drum hoisting. The disadvantage is that the hoisting process and equipment are complicated and inefficient, and the plant structure frame needs to be safety checked and modified, reinforced, and there are many unsafe factors. In addition, a larger working plane and space are required in the plant, and the working time in the plant is long, which seriously affects other converter equipment that are still in production. Utility Model Content
[0005] The purpose of the utility model is to provide a device for replacing the sliding movement of the converter drum in the original steelmaking plant, so as to overcome the shortcomings of the prior art. A sliding beam is arranged on the platform on the 8th floor of the plant, the sliding beam extends out of the gable of the plant and forms a cantilevered platform. The drum is hoisted onto the sliding beam of the cantilevered platform by a crane outside the plant, and the drum is installed in place by sliding as a whole, so as to simplify the installation process, improve the installation efficiency, reduce safety hazards, reduce the impact on other production lines, and reduce the construction cost.
[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:
[0007] A device for replacing the sliding movement of a converter drum in an original steelmaking plant comprises a main sliding beam, a lateral sliding beam and a gantry hanger, wherein one end of the main sliding beam is connected to the gable of the plant to form a cantilevered platform, and the other end is connected to the aisle of the drum installation position, one end of the lateral sliding beam is vertically connected to the main sliding beam, and the other end is connected to the drum installation position, the gantry hanger is vertically installed above the lateral sliding beam, the main sliding beam and the lateral sliding beam are both double-beam structures, the distance between the double beams matches the diameter of the drum, and a hoist is provided on the top of the gantry hanger.
[0008] The upper surfaces of the main sliding beam and the lateral sliding beam are respectively connected to sliding tracks through track pressing plates. The sliding tracks have the same specifications, and the upper surfaces at the vertical joints are flush to form a tic-tac-toe frame structure. The spacing between the track pressing plates is not greater than 500 mm.
[0009] The steam drum has its own base and moves as a whole. A traction lifting lug is arranged on the base. An anti-slip baffle is installed on site on the base, and the anti-slip baffle corresponds to the inner side of the sliding track.
[0010] The sliding rail is a steel rail with a specification of QU100 or above.
[0011] A reinforced oblique support is provided at the bottom of the cantilever platform.
[0012] The gantry hanger is formed by welding a crossbeam and a column.
[0013] The main sliding beam and the lateral sliding beam are both H-shaped steel.
[0014] The lateral sliding beam is fixedly connected to the factory building frame and is provided with an auxiliary reinforcement structure.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1) By setting a sliding beam on the target plant platform, the sliding beam extends out of the plant gable to form a cantilever platform, and the steam drum is hoisted to the sliding beam of the cantilever platform by a crane outside the plant, and then the steam drum is installed in place by sliding as a whole, which greatly simplifies the installation process, improves the installation efficiency, and reduces safety hazards;
[0017] 2) Minimize the impact on other production lines in production and significantly reduce construction costs;
[0018] 3) The utility model can be widely applied to the replacement and installation of large equipment installed at high altitude in similar old factories or closed factories, thus creating greater economic value. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model for replacing the original converter drum sliding device in a steelmaking plant;
[0020] Figure 2 yes Figure 1 A top view of
[0021] Figure 3 yes Figure 1 Right side view;
[0022] Figure 4 This is a schematic diagram of the steam drum sliding into place in the embodiment of the utility model;
[0023] Figure 5 It is a schematic diagram of the steam drum falling into place in an embodiment of the utility model.
[0024] In the figure: 1-steam drum, 2-main sliding beam, 3-lateral sliding beam, 4-gantry hanger, 5-cantilever platform, 6-main sliding track, 7-lateral sliding track, 8-factory frame beam, 9-reinforced oblique support, 10-winch, 11-hoist, 12-traction lifting eye, 13-auxiliary reinforcement structure, 14-track pressure plate, 15-anti-slip baffle, 16-hand hoist. DETAILED DESCRIPTION
[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.
[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.
[0027] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.
[0028] See Figure 1-5 , is a structural schematic diagram of an embodiment of the utility model for replacing the sliding device of the converter steam drum in the original steelmaking plant, including a main sliding beam 2, a lateral sliding beam 3 and a gantry hanger 4. One end of the main sliding beam 2 is connected to the gable of the plant to form a cantilever platform 5, and the other end is connected to the aisle of the steam drum installation position. The extended length of the cantilever platform 5 is determined according to the length of the steam drum, based on the principle of being able to safely place the steam drum. A patterned steel plate is laid on the cantilever platform 5. The width of the cantilever platform is determined according to the diameter of the steam drum and meets the operating needs of personnel to ensure safety and reliability.
[0029] One end of the lateral sliding beam 3 is vertically connected to the main sliding beam 2, and the other end is connected to the drum installation position. The lateral sliding beam 3 and the main sliding beam 2 are perpendicular to each other, and the spacing of the lateral sliding beam 3 is determined by the spacing of the drum base. The gantry hanger 4 is vertically installed above the lateral sliding beam 3. Both the main sliding beam 2 and the lateral sliding beam 3 are double-beam structures, and the distance between the double beams matches the diameter of the drum 1. A hoist 11 is provided on the top of the gantry hanger 4, and the specifications of the hoist 11 match the weight of the drum. The main sliding beam 2 and the lateral sliding beam 3 are both H-shaped steels of BH1000×400×14×25.
[0030] The upper surfaces of the main sliding beam 2 and the lateral sliding beam 3 are connected to the main sliding track 6 and the lateral sliding track 7 through the track pressure plate 14 respectively. The sliding track is a QU100 specification steel rail. One end of the lateral sliding beam 3 extends between the two main sliding beams 2. The upper surface of the vertical joint is flush and forms a tic-tac-toe frame structure. The track pressure plate 14 is 500mm apart. An anti-slip baffle 15 is provided on the main sliding track 6 at the aisle of the drum installation position. The lateral sliding beam is fixedly connected to the factory frame and is provided with an auxiliary reinforcement structure 13. The drum 1 has its own base and moves as a whole. The base is provided with a traction lug 12. An anti-slip baffle 15 is also installed on site on the base, and the anti-slip baffle 15 corresponds to the inner side of the sliding track.
[0031] The embodiment of the utility model is to establish a sliding channel outside the plant and at the steam drum location to minimize the impact on surrounding equipment. The specific operation steps are as follows:
[0032] 1) Build the sliding track, check the plant structure drawings, perform load assessment calculations, and properly reinforce its frame structure to ensure safety and reliability. Set the main sliding beam 2 on the plant frame beam 8 of the plant 8th floor installation platform. One end of the main sliding beam 2 extends out of the plant gable to form a cantilever platform 5. Set a lateral sliding beam at the steam drum installation aisle. Lay the sliding track on the main sliding beam 2 and the lateral sliding beam. Set a winch 10 at one end of the main sliding beam 2.
[0033] 2) The steam drum is brought into the site. The steam drum 1 is hoisted onto the main sliding beam 2 of the cantilever platform 5 by a crane outside the factory building. The center line of the steam drum is precisely aligned to coincide with the center line of the two main sliding rails 6. Anti-slip baffles 15 are welded below the steam drum base and close to the inner side of the main sliding rails 6. The steam drum 1 is slowly pulled by the winch 10 to slide to the lateral sliding rail 7. The anti-slip baffles 15 below the steam drum base are rotated 90° and welded to the inner side of the lateral sliding rail 7 below the steam drum base. The hand winch 16 at one end of the lateral sliding beam and the wire rope are then used to slowly pull the steam drum 1 to slide sideways until it is above the steam drum in place;
[0034] 3) The steam drum is in place. A gantry hanger 4 is set on the lateral sliding beam and connected with H-shaped steel to form an overall frame. The steam drum 1 is lifted by 50 mm using a hoist 11. The lateral sliding beam under the steam drum 1 is removed, and the steam drum 1 is lowered into place and accurately aligned.
[0035] The gantry hanger 4 is welded by beams and columns. The gantry hanger 4 is built after the steam drum 1 is moved to the top of the installation position, and its columns are firmly connected to the main sliding beam 2 and the plant frame beam 8 respectively; a reinforced diagonal support 9 is provided at the bottom of the cantilever platform 5. As needed, a gap is left between the lateral sliding track 7 and the main sliding track 6 for the lower baffle of the steam drum support to pass freely.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A method for replacing the original converter drum sliding device in a steelmaking plant, characterized in that: It includes a main sliding beam, a lateral sliding beam and a gantry hanger. One end of the main sliding beam is connected to the gable of the factory building to form a cantilevered platform, and the other end is connected to the aisle of the steam drum installation position. One end of the lateral sliding beam is vertically connected to the main sliding beam, and the other end is connected to the steam drum installation position. The gantry hanger is vertically installed above the lateral sliding beam. The main sliding beam and the lateral sliding beam are both double-beam structures. The distance between the double beams matches the diameter of the steam drum. A hoist is provided on the top of the gantry hanger.
2. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 1 is characterized in that: The upper surfaces of the main sliding beam and the lateral sliding beam are respectively connected to sliding tracks through track pressing plates. The sliding tracks have the same specifications, and the upper surfaces at the vertical joints are flush to form a tic-tac-toe frame structure. The spacing between the track pressing plates is not greater than 500 mm.
3. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 1, characterized in that: The steam drum has its own base and moves as a whole. A traction lifting lug is arranged on the base. An anti-slip baffle is installed on site on the base, and the anti-slip baffle corresponds to the inner side of the sliding track.
4. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 2, characterized in that: The sliding rail is a steel rail with a specification of QU100 or above.
5. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 1, characterized in that: A reinforced oblique support is provided at the bottom of the cantilever platform.
6. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 1, characterized in that: The gantry hanger is formed by welding a crossbeam and a column.
7. The method for replacing the original converter drum sliding device in a steelmaking plant according to claim 1, characterized in that: The main sliding beam and the lateral sliding beam are both H-shaped steel.
8. The method for replacing the existing converter drum sliding device in a steelmaking plant according to claim 1, characterized in that: The lateral sliding beam is fixedly connected to the factory building frame and is provided with an auxiliary reinforcement structure.