Method for installing converter by matching hydraulic module vehicle with hydraulic jacking device

Abstract

The invention relates to a method for installing a converter by matching a hydraulic module vehicle with a hydraulic jacking device, which comprises the following steps of: dividing a main body of the converter into modules, dividing a lower section of a converter shell, a middle section of the converter shell and a backing ring into combined modules, dividing an upper section of the converter shell into a first single module, and dividing a tilting device into a second single module; a sliding jacking system is composed of a hydraulic module vehicle and a hydraulic jacking device, and the hydraulic jacking device is arranged on the hydraulic module vehicle. The combined module and the first single module are conveyed through a sliding jacking system, the combined module is firstly conveyed to a converter installation position to be installed, then the second single module is lifted and installed in place through a hydraulic gantry lifting device, and the first single module and the combined module are assembled and installed after the first single module is conveyed to the converter installation position. Compared with an existing installation method, the method has the advantages of being high in installation efficiency, low in construction cost, high in installation precision, high in safety and reliability, high in automation degree, high in construction equipment universality and the like.

Description

Technical Field

[0001] The invention relates to the technical field of converter installation, and in particular to a method for installing a converter by using a hydraulic module vehicle in cooperation with a hydraulic jacking device. Background Art

[0002] The converter is mainly composed of two parts: the furnace body and the tilting device. The furnace body includes the furnace shell and the support ring, which are connected by a suspension device. The furnace shell of a large converter is generally divided into three parts: the upper section of the furnace shell (conical furnace top section), the middle section of the furnace shell (cylindrical furnace body section) and the lower section of the furnace shell (truncated spherical furnace bottom section).

[0003] The layout of steelmaking processes at home and abroad is roughly the same, and the installation and construction conditions of converters are also basically the same. Large converters are generally manufactured and transported in parts and assembled on site. The process flow is complex, the on-site working conditions are poor, and the lifting is difficult. Generally, they rely on ladle cars in the workshop to support the frame and converter. However, the ladle car can only move along its fixed track, which makes it difficult to adjust the lateral position of the converter during installation. Although the above installation method has the advantage of mature technology, its actual construction is difficult, and the converter installation measures lack universality. In this case, the combined push method of completing the modular assembly of large converters outside the workshop and then pushing the converter into place as a whole has received more and more attention.

[0004] At present, the largest converter installed by the combined push method in China is a 350-ton converter. The existing combined push method generally adopts the method of pushing two ladle cars in parallel (such as the "A modular installation method for a super-large steelmaking converter" disclosed in the Chinese patent application with application publication number CN108676960A). All the parts of the converter are assembled outside the line using a factory crane to form a ladle trolley assembly. A traction device is set in the refining span to pull the ladle trolley assembly. However, the ladle trolley assembly slides at a high position on the frame, which poses a high safety risk. In particular, after the tilting device is installed, the center of gravity of the converter is unstable, and it is very easy to deflect during sliding, and it is difficult to adjust, and there is a risk of tipping accidents. At the same time, there are the following problems:

[0005] In terms of equipment selection and integration, the equipment commonly used for overall movement of converters after assembly is mainly jacks and receiving frames, while synchronous jacking devices and hydraulic jacks are mainly used for high-level sliding. The equipment used is relatively simple, and the synchronization adjustment is difficult to control (the jack is generally controlled separately), and the integration is low.

[0006] In terms of converter installation accuracy, the converter is installed by combining a ladle car and a furnace receiving stand. The ladle car can only move along its fixed track. The positioning along the moving direction can be controlled, but it is difficult to adjust along the axis of the converter ear shaft. Generally, secondary positioning adjustment is required, and the secondary adjustment can generally only be done by pushing with a jack.

[0007] In terms of construction efficiency, similar technologies at home and abroad are currently at a technical bottleneck, and there is basically no room for shortening the construction period. The operating efficiency is limited by construction conditions and site conditions, and it is difficult to improve it further.

[0008] In terms of construction costs, there is currently a problem of high installation costs. The manufacturing and installation of the furnace frame requires more than 50 tons of work, and the installation requires a lot of manpower. The manufacturing of temporary construction devices takes a long time.

[0009] In terms of safety and reliability, the center elevation of the converter trunnion is generally about 10 meters, and there are many high-altitude operations and high safety risks. When the combined push method is used, the furnace frame is supported on the support ring and the converter is installed by sliding at a high position. Due to the unbalanced weight caused by the converter tilting device, it is difficult to ensure the sliding synchronization, and there is a risk of tipping. Temporary support measures are usually required, resulting in low construction efficiency and lack of flexibility in safety measures.

[0010] In terms of energy conservation and environmental protection, the cost of making furnace stands or sliding brackets is high, the welding workload is large, and the working environment is poor. The furnace stands and sliding brackets generally cannot be reused, resulting in a waste of resources. Summary of the invention

[0011] The present invention provides a method for installing a converter by using a hydraulic module vehicle in cooperation with a hydraulic jacking device. The middle section of a furnace shell, the lower section of a furnace shell and a support ring are assembled as a combined module, and the upper section of the furnace shell is used as a first single module. Both modules are transported and installed by a sliding jacking system composed of a hydraulic module vehicle and a hydraulic jacking device. The tilting device is lifted and installed in place as a second single module by a hydraulic gantry lifting device. Compared with the existing installation method, the present invention has the advantages of high installation efficiency, low construction cost, high installation accuracy, high safety and reliability, high degree of automation, and strong versatility of construction equipment.

[0012] In order to achieve the above object, the present invention adopts the following technical solutions:

[0013] A method for installing a converter by using a hydraulic module vehicle in conjunction with a hydraulic jacking device, wherein the main body of the converter is divided into modules, wherein the lower section of the furnace shell, the middle section of the furnace shell and a support ring are divided into a combined module, the upper section of the furnace shell is divided into a first single module, and a tilting device is divided into a second single module; a sliding jacking system is composed of a hydraulic module vehicle and a hydraulic jacking device, and the hydraulic jacking device is placed on the hydraulic module vehicle; the combined module and the first single module are both transported by the sliding jacking system, wherein the combined module is first transported to a converter installation position for installation, and then the second single module is lifted and installed in place by a hydraulic gantry lifting device, and the first single module is transported to the converter installation position for installation in combination with the combined module.

[0014] A method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device specifically comprises the following steps:

[0015] 1) Module division: the lower section of the converter shell, the middle section of the converter shell and the support ring are used as a combined module, the upper section of the converter shell is used as the first single module, and the tilting device of the converter is used as the second single module;

[0016] 2) Transportation of modular modules: pre-assemble the modular modules into a whole, including the suspension system and the ear shaft bearing seats on both sides of the converter; place the lower section of the furnace shell upwards, and set a lifting lug on the top of the lower section of the furnace shell; set a lower support platform on the hydraulic module vehicle, and adjust the level of the platform surface of the lower support platform; use the workshop crane to lift 4 sets of hydraulic jacking devices and place them on the lower support platform. The 4 sets of hydraulic jacking devices are placed symmetrically at the four corners, and the 4 sets of hydraulic jacking devices have the function of synchronous lifting; set an upper support platform on the top of the 4 sets of hydraulic jacking devices, and adjust the level of the platform surface of the upper support platform; use the workshop crane hook to hook the lifting lug, lift the modular module as a whole and place it on the upper support platform. The height of the modular module is higher than its installation height; finally, use the hydraulic module vehicle to transport the modular module to the converter installation position;

[0017] 3) Position adjustment and installation of the combined module: After the combined module reaches the converter installation position, the position and angle of the combined module are adjusted by the hydraulic module car to align the position of the combined module with the theoretical installation position; then, the four sets of hydraulic jacking devices are synchronously lowered to make the combined module reach the set installation position, and the trunnion bearing seats on both sides of the support ring are aligned with the bearing seat supports on the corresponding sides for installation;

[0018] 4) Transportation and installation of the tilting device: Before installing the tilting device, first install the distance ring adjustment device, the stop seat and the torsion bar device in place; install the running track on the converter platform, and set a hydraulic gantry lifting device on the running track. Use the hydraulic gantry lifting device to lift the tilting device, transport it along the running track to the side of the bearing seat at the converter drive end, install the tilting device, and connect the tilting device with the torsion bar device;

[0019] 5) Transportation and installation of the upper section of the furnace shell: After the installation of the combined module and the second single module is completed, the hydraulic module car is withdrawn from the converter installation position; the furnace mouth of the upper section of the furnace shell is placed downward, and the upper section of the furnace shell is lifted by the workshop crane and placed on the upper support platform of the hydraulic module car; then the hydraulic module car is used to transport the upper section of the furnace shell to the bottom of the installed combined module; the hydraulic jacking device is started, and the 4 groups of hydraulic jacking devices are jacked synchronously to lift the upper section of the furnace shell steadily to a position close to the combined module; the hydraulic module car is used to adjust the position and angle of the upper section of the furnace shell to align it with the middle section of the furnace shell, and then the upper section of the furnace shell and the middle section of the furnace shell are welded together;

[0020] 6) After the combined module, tilting device and upper section of the furnace shell are all installed in place, install other accessories of the converter, and finally use the tilting device to straighten the assembled converter body to complete the installation process of the converter.

[0021] In the step 3), the combination module is aligned with the theoretical installation position, which means that when the support ring is in a horizontal state, the center line of the support ring ear shaft coincides with the center line of the bearing seat support, and the center line of the support ring coincides with the theoretical vertical center line of the converter; wherein the center line of the bearing seat support is the line connecting the center of the driving end bearing seat support and the center of the floating end bearing seat support.

[0022] In the step 4), the combined module is adjusted after installation, and the tilting device is installed after acceptance.

[0023] In the step 4), the hydraulic gantry lifting device is composed of two groups of hydraulic gantries, a lifting beam and a lifting device; one group of hydraulic gantries is respectively arranged on the two tracks of the running track, the tops of the two groups of hydraulic gantries are connected by a lifting beam, and two groups of lifting devices are arranged on the lifting beam to cooperate with two lifting rings arranged on the tilting device.

[0024] In the step 5), the upper section of the furnace shell and the middle section of the furnace shell are assembled and fixed by welding, and the weld is heat treated.

[0025] The computer control system realizes centralized control of the hydraulic module vehicle, hydraulic jacking device and hydraulic gantry lifting device, as well as real-time monitoring of the converter installation process.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) The various parts of the converter are reasonably divided. The assembly of the support ring, the middle section of the furnace shell, the lower section of the furnace shell, the suspension system and other components can be completed before the equipment leaves the factory, and the on-site assembly and welding work volume is reduced by about 80%; the main on-site installation tasks are the transportation and adjustment and installation of the combined module and two single modules, among which the combined module and the first single module are both transported and installed by a sliding jacking system composed of a hydraulic module vehicle and a hydraulic jacking device (the hydraulic module vehicle and the hydraulic jacking device are both mature equipment in the engineering field), and the tilting device is lifted and installed in place as the second single module by a hydraulic gantry lifting device.

[0028] 2) In terms of equipment performance, the present invention adopts SPMT (self-propelled hydraulic module transport vehicle, referred to as hydraulic module vehicle) in conjunction with a hydraulic jacking device. The four groups of hydraulic jacking devices have a jacking capacity of more than 2,000 tons, and the hydraulic module vehicle has a carrying capacity of more than 900 tons. Hydraulic jacking devices and hydraulic module vehicles with different load capacities can be flexibly selected according to the weight of the transported modules, which can meet the installation of all current specifications of converters; it is easy to install and has a wide range of applications.

[0029] 3) In terms of equipment selection and integration, the hydraulic module vehicle and hydraulic jacking device selected in the present invention can realize synchronous control, and have good stability, timely and accurate signal detection and feedback, and a high degree of visualization; the construction equipment can realize centralized control, with high integration and good synchronization.

[0030] 4) In terms of installation accuracy, the hydraulic module vehicle can move in any direction, automatically adjust the level during travel, ensure smooth and reliable transportation, make it easy to adjust the converter in place, achieve millimeter-level positioning accuracy, and realize three-dimensional position adjustment in the horizontal and height directions.

[0031] 5) In terms of construction efficiency, the present invention adopts reasonable module division, which reduces the welding workload of the on-site group by about 80%, reduces the labor time consumption by about 50%, improves the working conditions, and increases the construction efficiency; due to the use of modular installation technology, the equipment is efficiently adjusted in place and the construction period is shortened by about 20%.

[0032] 6) In terms of construction costs, hydraulic modular vehicles and hydraulic jacking devices can be leased, in which case the main construction cost is the equipment leasing fee; hydraulic modular vehicles and hydraulic jacking devices can also be purchased self-owned equipment, in which case the main construction costs are the initial investment cost of the equipment, operation and maintenance costs, and depreciation expenses, etc.; and hydraulic modular vehicles and hydraulic jacking devices have strong versatility and high equipment turnover rate, and can also be leased to others.

[0033] 7) In terms of safety and reliability, the present invention adopts a modular installation method, which reduces the on-site assembly and welding procedures and high-altitude operations. The hydraulic module vehicle transportation has a self-stabilizing function, and the hydraulic jacking device can be controlled by a computer. Both can achieve centralized control and process monitoring, and the safety risk is relatively low; the tilting device is lifted and installed in place by a hydraulic gantry lifting device to avoid tipping when the combined module slides; through the preparation of a reasonable construction plan and the selection of equipment, the installability of the construction process is guaranteed.

[0034] 8) In terms of energy conservation and environmental protection, the power equipment used in the present invention is hydraulically driven and computer controlled, with low energy consumption. The hydraulic module vehicle is used in conjunction with a hydraulic jacking device to replace the traditional furnace receiving stand or high-position sliding support, reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the combined module of the present invention.

[0036] Figure 2 It is a structural schematic diagram of the first single module (upper section of the furnace shell) of the present invention.

[0037] Figure 3 It is a schematic structural diagram of the second monomer module (tilting device) of the present invention.

[0038] Figure 4 It is a schematic diagram of lifting the combined module of the present invention.

[0039] Figure 5 It is a schematic diagram of the sliding jacking of the combined module of the present invention.

[0040] Figure 6 It is a schematic diagram of the installation of the combined module of the present invention.

[0041] Figure 7 It is a schematic diagram of the second monomer module (tilting device) of the present invention sliding before installation.

[0042] Figure 8 It is a schematic diagram of the lifting and sliding of the second monomer module (tilting device) of the present invention.

[0043] Fig. 9 yes Figure 8 Side view of.

[0044] Fig.10 It is a schematic diagram of the second monomer module (tilting device) of the present invention after installation.

[0045] Fig.11 It is a schematic diagram of the sliding lifting of the first single module (upper section of the furnace shell) of the present invention.

[0046] Fig.12 It is a schematic diagram of the assembly of the first single module (the upper section of the furnace shell) and the combined module of the present invention.

[0047] Fig.13 It is a schematic diagram showing that the converter of the present invention is completely installed.

[0048] In the figure: Ⅰ. Combined module 1-1. Lower section of furnace shell 1-2. Middle section of furnace shell 1-3. Upper section of furnace shell Ⅱ. First single module 2. Support ring 3. Suspension system 4. Trunnion bearing seat 5. Tilting device Ⅲ. Second single module 6. Hydraulic module car 7. Hydraulic jacking device 8. Workshop crane hook 9. Lifting lug 10. Converter foundation 11. Lower support platform 12. Upper support platform 13-1. Drive end bearing seat support 13-2. Floating end bearing seat support 14. Torsion bar device 15. Stop seat 16. Traveling track 17. Hydraulic gantry lifting device 17-1. Hydraulic gantry 17-2. Lifting beam 17-3. Lifting device DETAILED DESCRIPTION

[0049] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0050] like Figure 1-Figure 13As shown, the method for installing a converter by using a hydraulic module vehicle in cooperation with a hydraulic jacking device of the present invention divides the main body of the converter into modules, wherein the lower section 1-1 of the furnace shell, the middle section 1-2 of the furnace shell and the support ring 2 are divided into a combined module I, the upper section 1-3 of the furnace shell is divided into a first single module II, and the tilting device 5 is divided into a second single module III; a sliding jacking system is composed of a hydraulic module vehicle 6 and a hydraulic jacking device 7, and the hydraulic jacking device 7 is placed on the hydraulic module vehicle 6; the combined module I and the first single module II are both transported by the sliding jacking system, wherein the combined module I is first transported to the converter installation position for installation, and then the second single module III is lifted and installed in place by the hydraulic gantry lifting device 17, and the first single module II is transported to the converter installation position and then installed in combination with the combined module I.

[0051] The method for installing a converter by using a hydraulic module vehicle in cooperation with a hydraulic jacking device according to the present invention specifically comprises the following steps:

[0052] 1) Module division: The lower section 1-1 of the converter shell, the middle section 1-2 of the converter shell and the support ring 2 are combined as module I (such as Figure 1 As shown), the upper section 1-3 of the converter shell is used as the first single module II (as shown Figure 2 As shown), the tilting device 5 of the converter is used as the second single module III (as shown Figure 3 shown);

[0053] 2)Combined module transportation: Figure 1 As shown, the combined module I is pre-assembled into a whole, including the suspension system 3 and the trunnion bearing seats 4 on both sides of the converter; the lower section 1-1 of the furnace shell is placed upward, and a lifting lug 9 is set on the top of the lower section 1-1 of the furnace shell (as shown in FIG. Figure 4 As shown); a lower support platform 11 is set on the hydraulic module vehicle 6, and the platform surface level of the lower support platform 11 is adjusted; the four sets of hydraulic jacking devices 7 are lifted by the workshop crane and placed on the lower support platform 11, and the four sets of hydraulic jacking devices 7 are placed symmetrically at the four corners, and the four sets of hydraulic jacking devices 7 have a synchronous lifting function; an upper support platform 12 is set on the top of the four sets of hydraulic jacking devices 7, and the platform surface level of the upper support platform 12 is adjusted; as shown Figure 4 As shown, the workshop crane hook 8 is used to hook the lifting lug 9, and the combined module I is hoisted as a whole and placed on the upper support platform 12. The height of the combined module I is higher than its installation height; finally, the hydraulic module vehicle 6 is used to transport the combined module I to the converter installation position (such as Figure 5 shown);

[0054] 3) Position adjustment and installation of combined modules: Figure 6As shown, after the combined module I reaches the converter installation position, the position and angle of the combined module I are adjusted by the hydraulic module car 6 so that the position of the combined module I is aligned with the theoretical installation position; then, the four groups of hydraulic jacking devices 7 are synchronously lowered so that the combined module I reaches the set installation position, and the trunnion bearing seats 4 on both sides of the support ring 2 are aligned with the bearing seat supports on the corresponding sides for installation;

[0055] 4) Transportation and installation of tilting device: Figure 7 As shown, before installing the tilting device 5, first install the distance ring adjustment device, the stop seat 15 and the torsion bar device 14 in place; install the running track 16 on the converter platform, and set the hydraulic gantry lifting device 17 on the running track 16. Use the hydraulic gantry lifting device 17 to lift the tilting device 5 and move it along the running track 16 to the side of the bearing seat at the drive end of the converter, install the tilting device 5, and connect the tilting device 5 with the torsion bar device 14 (as shown in FIG. Fig.10 shown);

[0056] 5) Transportation and installation of the upper section of the furnace shell: After the installation of the combined module and the second single module is completed, the hydraulic module vehicle 6 is withdrawn from the converter installation position; Fig.11 As shown, the furnace shell upper section 1-3 is placed with the furnace mouth facing downwards, and the furnace shell upper section 1-3 is lifted by the workshop crane and placed on the upper support platform 12 of the hydraulic module vehicle 6; then the hydraulic module vehicle 6 is used to transport the furnace shell upper section 1-3 to the bottom of the installed combined module I; Fig.12 As shown, the hydraulic lifting device 7 is started, and the four groups of hydraulic lifting devices 7 are lifted synchronously to steadily lift the upper section 1-3 of the furnace shell to a position close to the combined module I; the position and angle of the upper section 1-3 of the furnace shell are adjusted by the hydraulic module vehicle 6 to align it with the middle section 1-2 of the furnace shell, and then the upper section 1-3 of the furnace shell is welded to the middle section 1-2 of the furnace shell;

[0057] 6) If Fig.13 As shown, after the combined module I, the tilting device 5 and the upper section 1-3 of the furnace shell are all installed in place, other accessories of the converter are installed, and finally the assembled converter body is shaken straight by the tilting device 5 to complete the installation process of the converter.

[0058] In the step 3), the combination module I is aligned with the theoretical installation position, which means that when the support ring 2 is in a horizontal state, the center line of the support ring ear axis coincides with the center line of the bearing seat support, and the center line of the support ring coincides with the theoretical vertical center line of the converter; wherein the center line of the bearing seat support is the line connecting the center of the driving end bearing seat support 13-1 and the center of the floating end bearing seat support 13-2.

[0059] In the step 4), after the combined module I is installed, it is first adjusted, and after it is accepted, the tilting device 5 is installed.

[0060] In the step 4), if Figure 8, Fig. 9 As shown, the hydraulic gantry lifting device 17 is composed of two groups of hydraulic gantries 17-1, a lifting beam 17-2 and a lifting device 17-3; a group of hydraulic gantries 17-1 is respectively arranged on the two tracks of the running track 16, and the tops of the two groups of hydraulic gantries 17-1 are connected through the lifting beam 17-2. Two groups of lifting devices 17-3 are arranged on the lifting beam 17-2, which cooperate with the two lifting rings arranged on the tilting device 5.

[0061] In the step 5), the upper section 1-3 of the furnace shell and the middle section 1-2 of the furnace shell are assembled and fixed by welding, and the weld is heat treated.

[0062] The computer control system is used to realize centralized control of the hydraulic module vehicle 6, the hydraulic jacking device 7 and the hydraulic gantry lifting device 17, as well as real-time monitoring of the converter installation process.

[0063] The method for installing a converter by using a hydraulic module vehicle in combination with a hydraulic jacking device according to the present invention mainly solves the following problems:

[0064] 1) Reduce the welding workload during on-site assembly and improve the efficiency of converter installation.

[0065] 2) A sliding jacking system consisting of a hydraulic module vehicle 6 and a hydraulic jacking device 7 is used to replace the traditional installation method based on a push furnace stand (which needs to be made on site), thereby reducing construction measures fees and engineering costs.

[0066] 3) Adopt unique module division method and modular installation to improve converter installation accuracy.

[0067] The method for installing a converter by using a hydraulic module vehicle in cooperation with a hydraulic jacking device according to the present invention includes the following key steps and precautions:

[0068] 1. Module division: According to the structure and function of the converter, it is divided into three modules: combined module I (including support ring 2, middle section of furnace shell 1-2 and lower section of furnace shell 1-1), first single module II (upper section of furnace shell 1-3), second single module III (tilting device 5). Each module can be independently manufactured and accepted in the factory or pre-assembly site.

[0069] 2. Module transportation: After the modules are manufactured in the factory, they are transported to the construction site by appropriate means of transportation. Protective measures need to be taken during transportation to ensure the safety of transportation and the integrity of the module structure.

[0070] 3. Module installation, including the following process:

[0071] Construction preparation: Assembly of combined module I, including support ring 2, furnace shell middle section 1-2, furnace shell lower section 1-1, suspension system 3 and trunnion bearing seat 4, etc. Select the model of hydraulic jacking device 7 and hydraulic module vehicle 6 according to the overall weight of the assembled combined module I, and preferably set 4 sets of hydraulic jacking devices 7 on the hydraulic module vehicle 6.

[0072] Preparation for lifting: Weld a lifting lug 9 on the outer side of the furnace shell lower section 1-1 of the combined module I to match with the workshop crane hook 8, and the two lifting lugs 9 are symmetrically arranged on the top of the furnace shell lower section 1-1.

[0073] Trial lifting and hoisting: After assembly, the combined module I is in an inverted state. The combined module I is hoisted by a workshop crane. After the trial lifting is qualified, the combined module I is hoisted as a whole onto the hydraulic module vehicle 6 and placed on the upper support platform 12 on the top of the hydraulic jacking device 7.

[0074] Lifting and adjustment: After the combination module I is placed on the hydraulic module vehicle 6, the hydraulic lifting device 7 is used to support the combination module I. After the combination module I is adjusted to a horizontal state as a whole, the hydraulic module vehicle 6 is used to transport the combination module I to the converter installation position.

[0075] Precise positioning: The converter operation platform can be divided into pit type and elevated type; the pit type is to arrange the converter on the ground, and the ladle is placed in the pit to produce steel. Due to its poor working conditions, long inventory time and low converter operation rate, it is basically eliminated at present; while the elevated type is to build an elevated operation platform around the converter. The elevated operation platform serves as the converter foundation 10, and the ladle and slag pot are placed on the flat car on the ground. At present, all new converters adopt the elevated arrangement. The height of the combined module I supported by the hydraulic jacking device 7 on the hydraulic module car 6 is higher than the installation position. When it is transported to the top of the converter installation position by the hydraulic module car 6, after the precise position adjustment of the hydraulic module car 6, the four groups of hydraulic jacking devices 7 are synchronously lowered, so that the trunnion bearing seats 4 on both sides of the combined module I are located on the corresponding bearing seat supports (including the driving end bearing seat support 13-1 and the floating end bearing seat support 13-2).

[0076] Install the tilting device: After the combination module I is installed and adjusted and accepted, install the tilting device 5; before installing the tilting device 5, first install the distance ring adjustment device, the stop seat 15 and the torsion bar device 14 in place; use the hydraulic gantry lifting device 17 to lift the tilting device 5 and transport it along the running track 16 to the side of the bearing seat at the drive end of the converter. After installing the tilting device 5, connect the tilting device 5 with the torsion bar device 14.

[0077] Transport and lift the upper section of the furnace shell: Use the hydraulic module vehicle 6 to transport the upper section 1-3 of the furnace shell to the bottom of the assembled module I that has been installed in place, and use 4 sets of hydraulic lifting devices 7 to lift it synchronously.

[0078] Assembly and welding: Assemble the upper section 1-3 of the furnace shell and the middle section 1-2 of the furnace shell in the combination module I, adjust the assembly gap, and then carry out welding.

[0079] Heat treatment: After the furnace shell is welded, the weld is heat treated to ensure the welding quality.

[0080] Accessory installation: Install other accessories of the converter, and finally straighten the converter to complete the installation of the converter body.

[0081] The hydraulic module vehicle of the present invention can be a self-propelled hydraulic module transport vehicle produced by MAMMOET, the hydraulic jacking device can be an automatic stacking synchronous lifting device produced by KIET, and the hydraulic gantry can be a hydraulic gantry produced by MAMMOET.

[0082] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device, characterized in that: The main body of the converter is divided into modules, wherein the lower section of the furnace shell, the middle section of the furnace shell and the support ring are divided into combined modules, the upper section of the furnace shell is divided into the first single module, and the tilting device is divided into the second single module; the sliding jacking system is composed of a hydraulic module vehicle and a hydraulic jacking device, and the hydraulic jacking device is placed on the hydraulic module vehicle; the combined module and the first single module are both transported by the sliding jacking system, wherein the combined module is first transported to the converter installation position for installation, and then the second single module is lifted and installed in place through the hydraulic gantry lifting device, and the first single module is transported to the converter installation position and then installed in combination with the combined module.

2. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 1, characterized in that: The specific steps include: 1) Module division: the lower section of the converter shell, the middle section of the converter shell and the support ring are used as a combined module, the upper section of the converter shell is used as the first single module, and the tilting device of the converter is used as the second single module; 2) Transportation of modular modules: pre-assemble the modular modules into a whole, including the suspension system and the ear shaft bearing seats on both sides of the converter; place the lower section of the furnace shell upwards, and set a lifting lug on the top of the lower section of the furnace shell; set a lower support platform on the hydraulic module vehicle, and adjust the level of the platform surface of the lower support platform; use the workshop crane to lift 4 sets of hydraulic jacking devices and place them on the lower support platform. The 4 sets of hydraulic jacking devices are placed symmetrically at the four corners, and the 4 sets of hydraulic jacking devices have the function of synchronous lifting; set an upper support platform on the top of the 4 sets of hydraulic jacking devices, and adjust the level of the platform surface of the upper support platform; use the workshop crane hook to hook the lifting lug, lift the modular module as a whole and place it on the upper support platform. The height of the modular module is higher than its installation height; finally, use the hydraulic module vehicle to transport the modular module to the converter installation position; 3) Position adjustment and installation of the combined module: After the combined module reaches the converter installation position, the position and angle of the combined module are adjusted by the hydraulic module car to align the position of the combined module with the theoretical installation position; then, the four sets of hydraulic jacking devices are synchronously lowered to make the combined module reach the set installation position, and the trunnion bearing seats on both sides of the support ring are aligned with the bearing seat supports on the corresponding sides for installation; 4) Transportation and installation of the tilting device: Before installing the tilting device, first install the distance ring adjustment device, the stop seat and the torsion bar device in place; install the running track on the converter platform, and set a hydraulic gantry lifting device on the running track. Use the hydraulic gantry lifting device to lift the tilting device, transport it along the running track to the side of the bearing seat at the converter drive end, install the tilting device, and connect the tilting device with the torsion bar device; 5) Transportation and installation of the upper section of the furnace shell: After the installation of the combined module and the second single module is completed, the hydraulic module car is withdrawn from the converter installation position; the furnace mouth of the upper section of the furnace shell is placed downward, and the upper section of the furnace shell is lifted by the workshop crane and placed on the upper support platform of the hydraulic module car; then the hydraulic module car is used to transport the upper section of the furnace shell to the bottom of the installed combined module; the hydraulic jacking device is started, and the 4 groups of hydraulic jacking devices are jacked synchronously to lift the upper section of the furnace shell steadily to a position close to the combined module; the hydraulic module car is used to adjust the position and angle of the upper section of the furnace shell to align it with the middle section of the furnace shell, and then the upper section of the furnace shell and the middle section of the furnace shell are welded together; 6) After the combined module, tilting device and upper section of the furnace shell are all installed in place, install other accessories of the converter, and finally use the tilting device to straighten the assembled converter body to complete the installation process of the converter.

3. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 2, characterized in that: In the step 3), the combination module is aligned with the theoretical installation position, which means that when the support ring is in a horizontal state, the center line of the support ring ear shaft coincides with the center line of the bearing seat support, and the center line of the support ring coincides with the theoretical vertical center line of the converter; wherein the center line of the bearing seat support is the line connecting the center of the driving end bearing seat support and the center of the floating end bearing seat support.

4. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 2, characterized in that: In the step 4), the combined module is adjusted after installation, and the tilting device is installed after acceptance.

5. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 2, characterized in that: In the step 4), the hydraulic gantry lifting device is composed of two groups of hydraulic gantries, a lifting beam and a lifting device; one group of hydraulic gantries is respectively arranged on the two tracks of the running track, the tops of the two groups of hydraulic gantries are connected by a lifting beam, and two groups of lifting devices are arranged on the lifting beam to cooperate with two lifting rings arranged on the tilting device.

6. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 2, characterized in that: In the step 5), the upper section of the furnace shell and the middle section of the furnace shell are assembled and fixed by welding, and the weld is heat treated.

7. The method for installing a converter using a hydraulic module vehicle in conjunction with a hydraulic jacking device according to claim 1 or 2, characterized in that: The computer control system realizes centralized control of the hydraulic module vehicle, hydraulic jacking device and hydraulic gantry lifting device, as well as real-time monitoring of the converter installation process.

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