Boiler water cooling wall assembling and hoisting device and installation method

Abstract

The invention discloses a boiler water-cooled wall assembling and hoisting device and a mounting method, the boiler water-cooled wall assembling and hoisting device comprises a water-cooled wall tube array assembling device and a water-cooled wall hoisting tool, the assembling device is designed to be a pair of angle steel clamping two side tube ends to be aligned, and the straightness and the unfitness of butt joint of pipelines are controlled through connection of fixing bolts and adjustment of the distance; a telescopic wedge plate is designed at a welding seam to adjust a pipeline opening aligning gap. The water-cooled wall lifting appliance is designed to be movable and can be conveniently disassembled and assembled, and after the vertical plates are inserted into the sealing plates between the water-cooled wall tubes, the lower ends are inserted into the insertion plates to achieve locking. And then, a plurality of lifting points are arranged on the water-cooled wall by utilizing the device, and the water-cooled wall is integrally lifted in place through the cooperation of a crane, a winch pulley block and a reverse link force. Compared with the prior art, the device is convenient to disassemble, so that the assembling and hoisting operation time of the boiler water wall is obviously shortened, the efficiency is greatly improved, the operation difficulty is reduced, and the safety of equipment and constructors is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of boiler water-cooled wall assembly and hoisting, and in particular to a boiler water-cooled wall assembly and hoisting device and an installation method. Background Art

[0002] The water-cooled wall is the main heat-receiving part of the boiler. It consists of several rows of steel pipes distributed around the boiler furnace. It has flowing water or steam inside and receives heat from the flame of the boiler furnace from the outside. It mainly absorbs the radiation heat of the high-temperature combustion products in the furnace, and the working fluid moves upward in it and evaporates due to the heat.

[0003] In modern industrial boiler installation projects, such as power plants and waste heat boilers in steelmaking, sintering and dry quenching systems, the hoisting of boiler water walls has always been a difficult problem, especially for large boiler water walls with large length and width. The turning and hoisting of large boiler water walls is more difficult. This is mainly because there is no special hoisting device, including the structural characteristics of poor rigidity, the equipment is easy to deform and damage during the hoisting process, and there are great safety hazards. At the same time, because the length and width of the water-cooled wall of a large boiler are too large, up to 20 to 30 meters in length, the upper and lower halves are often hoisted in place and then assembled and welded, and it is impossible to achieve the overall assembly and hoisting of the single-side furnace wall water-cooled wall, resulting in low construction efficiency and high costs.

[0004] The welding work of the boiler piping system is heavy and the welding construction quality is demanding. Because the main medium of its process flow is high-temperature and high-pressure steam, the construction quality is directly related to the production safety of the boiler and the power generation system. The installation of the tube groups between the boiler water-cooled walls and between the water-cooled walls and the headers accounts for a large proportion of the entire boiler piping installation. The requirements for the misalignment and butt clearance of the pipe joints are very high. Therefore, ensuring that the misalignment and butt clearance of the pipe joints meet the design documents and engineering quality requirements is the focus of the boiler installation project. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a device and installation method for assembling and hoisting the boiler water-cooled wall. The device structure is convenient for disassembly, which significantly shortens the operation time of assembling and hoisting the boiler water-cooled wall, greatly improves the efficiency, reduces the difficulty of operation, and ensures the safety of equipment and construction personnel.

[0006] To achieve this technical purpose, the present invention adopts the following scheme: In a first aspect, the present invention provides a device for assembling and hoisting boiler water-cooled walls, comprising an assembling device and a hoisting tool, wherein the assembling device is arranged at the ends of the water-cooled wall tubes to be assembled, and clamps and fixes the water-cooled wall tubes to be assembled; an adjusting screw is arranged on the assembling device, and the adjusting screw is arranged between the water-cooled wall tubes to be assembled, and is used to adjust the gap between the pipe ends; the hoisting tool is detachably installed on the water-cooled wall tubes after assembly, and a steel wire rope is connected to the hoisting tool.

[0007] Furthermore, the assembly device includes symmetrically arranged angle steels, a first ear plate is arranged on the right-angled side of the angle steel, a boss is arranged in the middle of the back of the angle steel, a threaded hole is arranged at the boss, and the threaded hole passes through the angle steel; a fixing bolt is arranged at the first ear plate for connecting the symmetrically arranged angle steels.

[0008] Furthermore, a groove is provided at the edge of the right-angle side of the angle steel, and the groove is located in the middle of the angle steel.

[0009] Furthermore, the adjusting screw includes a protruding structure, to which a first screw is fixedly connected, and a hexagonal rod is connected at the end of the first screw; a wedge plate is movably connected to one end of the protruding structure of the adjusting screw; when pairing, the wedge plate is arranged at the interface position of the water-cooled wall tubes to be paired.

[0010] Further, the sling comprises a sling upper component and a sling lower component, and the sling upper component and the sling lower component are connected by bolts.

[0011] Furthermore, the upper component of the sling includes a first connecting plate, second ear plates are provided on both sides of the first connecting plate, and a connecting hole is provided on the first connecting plate; the lower component of the sling includes a second connecting plate, vertical plates are provided on both sides of the second connecting plate, a plug hole is provided on the vertical plate, a plug plate is provided in the plug hole, and a locking screw is provided on one side of the plug plate; a connecting hole corresponding to the first connecting plate is provided on the second connecting plate, and the connecting bolts of the first connecting plate and the second connecting plate are provided in the connecting hole.

[0012] In a second aspect, the present invention provides an installation method using the above-mentioned boiler water wall assembly and hoisting device, comprising the following steps: S1. Use a pairing device to weld the water-cooled wall tubes together, and then connect the water-cooled wall tubes to form a water-cooled wall; S2. Cut a rectangular hole on the sealing plate between the water-cooled wall tubes, and insert the vertical plate of the lower part of the hanger into the rectangular hole; S3, insert the plug board into the socket of the vertical board and fix the plug board with locking screws; S4, connecting the lower part of the sling and the upper part of the sling by bolts, connecting the lifting lug of the upper part of the sling with a wire rope, and connecting the wire rope with the hook; S5. Install the hanger at other positions of the water wall according to the method of steps S2 to S4; S6. Install the first winch pulley block, the second winch pulley block and the fall chain on the top beam of the boiler frame; S7. Use a crane to move the water-cooled wall horizontally into the boiler. The hook of the second winch pulley block is connected to one of the steel wire ropes, and the hook of the crane is connected to the other steel wire rope. The second winch pulley block is continuously lifted, and the crane cooperates to move the tail of the water-cooled wall into the boiler frame. S8, slowly hook the water-cooled wall, connect the wire rope connected to the hook of the crane to the hook of the first winch pulley block, and the first winch pulley block and the second winch pulley block cooperate to lift the water-cooled wall to a vertical state; S9, unhook the first winch pulley block from the wire rope, and lift the second winch pulley block alone to lift the water-cooled wall to the designed elevation; S10. Use a crane and a fall chain to rotate and translate the water-cooled wall to the side of the boiler frame and install the hanger; S11. Install the remaining water-cooled walls according to the above method.

[0013] Furthermore, the installation position and number of the hangers are determined according to the specific size of the water-cooled wall.

[0014] Furthermore, the specific operation steps of assembling the water-cooled wall tubes are as follows: S101, sleeve the assembly device on one end of the water-cooled wall tube, insert one end of the other water-cooled wall tube into the assembly device, and connect and fix the assembly device with fixing bolts; S102, inserting the wedge plate of the adjusting screw into the interface position of the water-cooled wall tube; S103, by adjusting the rotation angle of the first screw, the wedge plate is moved so that the gap between the water-cooled wall tubes meets the requirement, and the fixing bolts are tightened and fixed; S104. Spot weld the water wall tube joints at the grooves on both sides of the middle of the angle steel; S105, rotate the assembly device 90 degrees, confirm that the water-cooled wall tubes in this direction meet the requirements, and then spot weld the pipe interfaces at the grooves on both sides of the middle of the angle steel; S106. Finally, the entire assembly device is dismantled and the pipeline weld is formally welded.

[0015] Compared with the prior art, the present invention has the following beneficial effects: ① The water-cooled wall tube assembly device is suitable for ground assembly of water-cooled wall and header, and also for fixed joints of water-cooled wall at various angles. The overall structure is easy to disassemble and can be adjusted to adapt to water-cooled wall tubes with diameters within a certain range, thus improving the application range of assembly and welding of water-cooled wall tubes.

[0016] ② The lifting device of the water-cooled wall tubes effectively disperses the load applied by the lifting ears to the water-cooled wall tubes and the sealing plates between them during lifting. The horizontal plug-in plates effectively protect the tubes to prevent them from being too concentrated and causing local damage or overall deformation of the water-cooled wall.

[0017] ③ Since the hoisting device is easy to set up and dismantle, multiple hoisting points are evenly set on the water-cooled wall, and the local and overall deformation or damage of the water-cooled wall during hoisting is prevented through the coordinated relay of the crane and the hoisting system, thereby realizing the overall modular hoisting of the single-side water-cooled wall of the furnace wall of a large boiler. Based on the embodiment, if the weight and size of the water-cooled wall increase, the number of hoisting points can be increased in both the horizontal and vertical directions.

[0018] ④ This method and device have a simple structure, which significantly shortens the operation time of assembling and hoisting the boiler water-cooled wall, greatly improves the efficiency, reduces the difficulty of the operation, and ensures the safety of equipment and construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the device assembly according to an embodiment of the present invention; Figure 2 is a top view of a device for assembling an embodiment of the present invention; Figure 3 It is a left view of the assembly device according to an embodiment of the present invention; Figure 4 Schematic diagram of an adjusting screw rod according to an embodiment of the present invention, the left figure is a front view, and the right figure is a side view; Figure 5 This is a schematic diagram of the group operation of an embodiment of the present invention; Figure 6 is another schematic diagram of the group pair operation of the embodiment of the present invention; Figure 7 Schematic diagram of the upper part of the sling according to an embodiment of the present invention, the left figure is a front view, and the right figure is a side view; Figure 8 Schematic diagram of the lower part of the sling according to an embodiment of the present invention, the left figure is a front view, and the right figure is a side view; Fig. 9 is a schematic diagram of a plug board according to an embodiment of the present invention; Fig.10 This is a schematic diagram of the installation state of the hanger according to an embodiment of the present invention; Fig.11 Schematic diagram of the arrangement of water-cooled walls and hanging points according to an embodiment of the present invention; Fig.12 It is a schematic step of the hoisting operation of an embodiment of the present invention; Fig.13 It is another step of the lifting operation of the embodiment of the present invention; Fig.14 This is another step of the hoisting operation according to the embodiment of the present invention; Fig.15 This is another step of the hoisting operation of the embodiment of the present invention; Fig.16 Schematic diagram of water-cooled wall arrangement according to an embodiment of the present invention; Markings in the figure are: 1. Assembly device; 101. Angle steel; 102. First ear plate; 103. Boss; 104. Fixing bolt; 2. Adjusting screw; 201. Protruding structure; 202. First screw; 203. Hexagonal rod; 204. Wedge plate; 3. Upper part of the sling; 301. First connecting plate; 302. Second ear plate; 4. Lower part of the sling; 401. Second connection; 402. Vertical plate; 403. Insert plate; 404. Locking screw; 5. Sealing plate; 6. Water-cooled wall tubes; 7. Wire rope; 8. First winch pulley block; 9. Second winch pulley block; 10. Crane; 11. Falling chain; 12. Water-cooled wall. DETAILED DESCRIPTION

[0020] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0021] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" or "laid on" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0024] See also Figures 1 to 10 The present invention provides a device for assembling and hoisting a boiler water-cooled wall, comprising an assembling device 1 and a hoist. The assembling device 1 is arranged at the end of the water-cooled wall tubes 6 to be assembled, and clamps and fixes the water-cooled wall tubes 6 to be assembled; an adjusting screw 2 is arranged on the assembling device 1, and the adjusting screw 2 is arranged between the water-cooled wall tubes 6 to be assembled, and is used to adjust the gap between the pipe ends; the hoist is detachably installed on the water-cooled wall tubes 6 after assembly, and a steel wire rope 7 is connected to the hoist.

[0025] See also Figures 1 to 3 The assembly device 1 includes symmetrically arranged angle steels 101, a first ear plate 102 is arranged at the right angle side of the angle steel 101, a boss 103 is arranged in the middle of the back of the angle steel 101, a threaded hole is arranged at the boss 103, and the threaded hole penetrates the angle steel 101; a fixing bolt 104 is arranged at the first ear plate 102 for connecting the symmetrically arranged angle steels 101. A groove is arranged at the edge of the right angle side of the angle steel 101, and the groove is located in the middle of the angle steel 101.

[0026] See also Figure 4 The adjusting screw 2 includes a protruding structure 201, a first screw 202 is fixedly connected to the protruding structure 201, and a hexagonal rod 203 is connected to the end of the first screw 202; a wedge plate 204 is movably connected to one end of the protruding structure 201 of the adjusting screw 2; when assembling, the wedge plate 204 is arranged at the interface position of the water-cooled wall tube 6 to be assembled.

[0027] In some embodiments, the assembly device 1 includes two angle steels 101, and a first ear plate 102 is welded to the right-angle edge of each angle steel 101. There are 6 first ear plates 102 in total, and rectangular grooves are opened at the two right-angle edges in the middle of the angle steel 101. A boss 103 is set in the middle of the back of the angle steel 101, and a threaded hole penetrating the angle steel 101 and the boss 103 is processed, and the adjusting screw 2 is inserted into the threaded hole. The wedge plate 204 of the adjusting screw 2 is set between the two angle steels 101.

[0028] See also Figures 7 to 10 The sling comprises an upper sling component 3 and a lower sling component 4, which are connected by bolts. The upper sling component 3 comprises a first connecting plate 301, and second ear plates 302 are arranged on both sides of the first connecting plate 301, and a connecting hole is provided on the first connecting plate 301; the lower sling component 4 comprises a second connecting plate 401, and a connecting hole corresponding to the first connecting plate 301 is provided on the second connecting plate 401, and the connecting bolts of the first connecting plate 301 and the second connecting plate 401 are arranged in the connecting hole; the second connecting plate 401 is provided with vertical plates 402 on both sides, and a plug hole is provided on the vertical plates 402, and a plug plate 403 is arranged in the plug hole, and a locking screw 404 is provided on one side of the plug plate 403.

[0029] On the other hand, the present invention provides a method for installing the boiler water wall assembly and hoisting device using the above-mentioned method, comprising the following steps (see Figures 11 to 16 ): S1, using the assembling device 1 to assemble and weld the water-cooled wall tubes 6, and then connect the water-cooled wall tubes 6 to form a water-cooled wall 12; S101, sleeve the assembly device 1 on one end of the water-cooled wall tube 6, insert one end of the other water-cooled wall tube 6 into the assembly device 1, and connect and fix the assembly device 1 with the fixing bolt 104; S102, inserting the wedge plate 204 of the adjusting screw 2 into the interface position of the water-cooled wall tube 6; S103, by adjusting the rotation angle of the first screw rod 202, the wedge plate 204 is moved so that the clearance between the water-cooled wall tubes 6 meets the requirement, and the fixing bolts 104 are tightened and fixed; S104, spot welding and fixing the interfaces of the water-cooled wall tubes 6 at the grooves on both sides of the middle of the angle steel 101; S105, rotating the assembly device 1 by 90 degrees, confirming that the water-cooled wall tubes 6 in this direction meet the requirements, and then spot welding the pipe interfaces at the grooves on both sides of the middle of the angle steel 101; S106, finally, the assembly device 1 is completely dismantled, and the pipeline weld joint is formally welded; S2. Cut a rectangular hole on the sealing plate 5 between the water-cooled wall tubes 6, and insert the vertical plate 402 of the lower part 4 of the hanger into the rectangular hole; S3, insert the plug board 403 into the plug hole of the vertical board 402, and fix the plug board 403 with the locking screw 404; S4, connecting the lower part 4 of the sling and the upper part 3 of the sling by bolts, connecting the lifting lug of the upper part 3 of the sling with a steel wire rope 7, and connecting the steel wire rope 7 with the hook; S5. According to the method of steps S2 to S4, hangers are installed at other positions of the water-cooled wall 12. The installation positions and the number of hangers are determined according to the specific size of the water-cooled wall 12. S6. Install a first winch pulley block 8, a second winch pulley block 9 and a fall chain 11 on the top beam of the boiler frame; S7, use the crane 10 to move the water-cooled wall 12 horizontally into the boiler, the hook of the second hoisting pulley block 9 is connected to one of the steel wire ropes 7, the hook of the crane 10 is connected to the other steel wire rope 7, the second hoisting pulley block 9 is continuously lifted, and the crane 10 cooperates to move the tail of the water-cooled wall 12 into the boiler frame; S8, slowly hook the water-cooled wall 12, connect the wire rope 7 connected to the hook of the crane 10 with the hook of the first winch pulley block 8, and the first winch pulley block 8 cooperates with the second winch pulley block 9 to lift the water-cooled wall 12 to a vertical state; S9, unhook the first winch pulley block 8 from the wire rope 7, and lift the second winch pulley block 9 alone to lift the water-cooled wall 12 to the designed elevation; S10, using the crane 10 and the fall chain 11 to rotate and translate the water-cooled wall 12 to the side of the boiler frame and install the suspension; S11. Install the remaining water-cooled wall 12 according to the above method.

[0030] In some embodiments, see Figures 11 to 16 After the 12 groups of water-cooled walls are welded, set the number of hanging points to 12, install hanging equipment at each drop point, and 3 hanging points at ABCD. Fig.11 In order to balance the force of the wire ropes 7 at the three lifting points during the lifting process and facilitate the leveling of the water-cooled wall 12, one of the three lifting points is selected according to the situation and connected to the hook using a fall chain 11.

[0031] The boiler steel structure frame needs to reserve a hoisting channel for the water-cooled wall 12 at the bottom, that is, on the side of the rear water-cooled wall 12, with a height equal to the height of the economizer. First, use the crane 10 to horizontally move the water-cooled wall 12 into the boiler frame, then use the second winch pulley block 9 to lift A and B (6 points), and the crane 10 to lift C and D (6 points). The second winch pulley block 9 is continuously lifted, and the crane 10 cooperates to move the tail of the water-cooled wall 12 into the boiler frame.

[0032] The water-cooled wall 12 is slowly hooked, and the crane 10 is unhooked from the C and D points of the water-cooled wall 12. Then, the first winch pulley group 8 is used to lift the C and D points (6 points), and the second winch pulley group 9 is cooperated to lift until the water-cooled wall 12 reaches a vertical state.

[0033] Unhook the first winch pulley block 8 from the six lifting points at C and D of the water-cooled wall 12, and lift the second winch pulley block 9 alone to lift the water-cooled wall 12 to the designed elevation.

[0034] Hook the crane 10 with the six lifting points at A and B of the water-cooled wall 12, and translate the water-cooled wall 12 while rotating it 90 degrees. Due to the obstruction of the large plate beam on the top of the boiler frame, two large fall chains 11 are required to slow down the hook and relay. The lifting points are still at A and B. After 2 to 3 slow hooks, the crane 10 and the fall chain 11 alternately translate the water-cooled wall 12 to the side of the boiler frame. After alignment and fine-tuning, install the suspension and suspend it under the plate beam on the top of the frame.

[0035] According to the above method, install the left and right water-cooled walls 12 of the boiler. Then, continue to install the front and rear water-cooled walls 12 according to the following method.

[0036] When the crane 10 is hoisting the front water-cooled wall 12, it only needs to be horizontally moved to the left side of the boiler frame, and then two large fall chains 11 are used for relay, fine adjustment and connection hanging. Finally, the rear water-cooled wall 12 is hoisted. After the second winch pulley block 9 lifts the water-cooled wall 12 into place, there is no need to use the crane 10 to move it, and the fall chains 11 are directly used for relay, fine adjustment and connection hanging.

[0037] Compared with the prior art, the present invention has the following beneficial effects: ① The water-cooled wall tube assembly device is suitable for ground assembly of water-cooled wall and header, and also for fixed joints of water-cooled wall at various angles. The overall structure is easy to disassemble and can be adjusted to adapt to water-cooled wall tubes with diameters within a certain range, thus improving the application range of assembly and welding of water-cooled wall tubes.

[0038] ② The lifting device of the water-cooled wall tubes effectively disperses the load applied by the lifting ears to the water-cooled wall tubes and the sealing plates between them during lifting. The horizontal plug-in plates effectively protect the tubes to prevent them from being too concentrated and causing local damage or overall deformation of the water-cooled wall.

[0039] ③ Since the hoisting device is easy to set up and dismantle, multiple hoisting points are evenly set on the water-cooled wall, and the local and overall deformation or damage of the water-cooled wall during hoisting is prevented through the coordinated relay of the crane and the hoisting system, thereby realizing the overall modular hoisting of the single-side water-cooled wall of the furnace wall of a large boiler. Based on the embodiment, if the weight and size of the water-cooled wall increase, the number of hoisting points can be increased in both the horizontal and vertical directions.

[0040] ④ This method and device have a simple structure, which significantly shortens the operation time of assembling and hoisting the boiler water-cooled wall, greatly improves the efficiency, reduces the difficulty of the operation, and ensures the safety of equipment and construction personnel.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A boiler water wall assembly and hoisting device, comprising an assembly device (1) and a hoisting device, characterized in that: The pairing device (1) is arranged at the end of the water-cooled wall tubes (6) to be paired, and clamps and fixes the water-cooled wall tubes (6) to be paired; an adjusting screw (2) is arranged on the pairing device (1), and the adjusting screw (2) is arranged between the water-cooled wall tubes (6) to be paired, and is used to adjust the gap between the pipe ends; the hanging device is detachably installed on the water-cooled wall tubes (6) after pairing, and the hanging device is connected to a steel wire rope (7).

2. The boiler water wall assembly and hoisting device according to claim 1 is characterized in that: The pairing device (1) comprises symmetrically arranged angle steels (101), wherein a first ear plate (102) is arranged on a right-angled side of the angle steel (101), a boss (103) is arranged in the middle of the back of the angle steel (101), and a threaded hole is arranged at the boss (103), and the threaded hole passes through the angle steel (101); a fixing bolt (104) is arranged at the first ear plate (102) for connecting the symmetrically arranged angle steels (101).

3. The boiler water wall assembly and hoisting device according to claim 2 is characterized in that: A groove is provided at the edge of the right-angle side of the angle steel (101), and the groove is located in the middle of the angle steel (101).

4. The boiler water wall assembly and hoisting device according to claim 1 is characterized in that: The adjusting screw rod (2) comprises a protruding structure (201), a first screw rod (202) is fixedly connected to the protruding structure (201), and a hexagonal rod (203) is connected to the end of the first screw rod (202); one end of the protruding structure (201) of the adjusting screw rod (2) is movably connected to a wedge plate (204); when pairing, the wedge plate (204) is arranged at the interface position of the water-cooled wall tubes (6) to be paired.

5. The boiler water wall assembly and hoisting device according to claim 1, characterized in that: The sling comprises an upper sling component (3) and a lower sling component (4), and the upper sling component (3) and the lower sling component (4) are connected by bolts.

6. The boiler water wall assembly and hoisting device according to claim 5, characterized in that: The upper part (3) of the sling comprises a first connecting plate (301), second ear plates (302) are arranged on both sides of the first connecting plate (301), and the first connecting plate (301) is provided with a connecting hole; the lower part (4) of the sling comprises a second connecting plate (401), vertical plates (402) are arranged on both sides of the second connecting plate (401), a plug hole is arranged on the vertical plate (402), a plug plate (403) is arranged in the plug hole, and a locking screw (404) is arranged on one side of the plug plate (403); the second connecting plate (401) is provided with a connecting hole corresponding to the first connecting plate (301).

7. A method for installing a boiler water wall assembly and hoisting device using any one of the preceding claims, characterized in that: The following steps are involved: S1. Using an assembling device (1) to assemble and weld water-cooled wall tubes (6), and then connecting the water-cooled wall tubes (6) to form a water-cooled wall (12); S2. Cut a rectangular hole on the sealing plate (5) between the water-cooled wall tubes (6), and insert the vertical plate (402) of the lower part (4) of the sling into the rectangular hole; S3, inserting the plug plate (403) into the plug hole of the vertical plate (402), and fixing the plug plate (403) with a locking screw (404); S4, connecting the lower part (4) of the sling and the upper part (3) of the sling by means of bolts, connecting the lifting lug of the upper part (3) of the sling with a steel wire rope (7), and connecting the steel wire rope (7) to the lifting hook; S5. Install a hanger at other positions of the water-cooled wall (12) according to the method of steps S2 to S4; S6. Arrange a first winch pulley block (8), a second winch pulley block (9) and a fall chain (11) on the top beam of the boiler frame; S7, using a crane (10) to horizontally move the water-cooled wall (12) into the boiler, the hook of the second winch pulley block (9) is connected to one of the steel wire ropes (7), the hook of the crane (10) is connected to the other steel wire rope (7), the second winch pulley block (9) is continuously lifted, and the crane (10) cooperates to move the rear end of the water-cooled wall (12) into the boiler frame; S8, slowly hooking the water-cooled wall (12), connecting the steel wire rope (7) connected to the hook of the crane (10) with the hook of the first winch pulley block (8), and the first winch pulley block (8) and the second winch pulley block (9) cooperate to lift the water-cooled wall (12) to a vertical state; S9, unhook the first winch pulley block (8) from the steel wire rope (7), and lift the second winch pulley block (9) alone to lift the water-cooled wall (12) to the designed elevation; S10, using the crane (10) and the fall chain (11) to rotate and translate the water-cooled wall (12) so that it reaches the side of the boiler frame and is installed and hung; S11. Install the remaining water-cooled wall (12) according to the above method.

8. The installation method of the boiler water wall assembly and hoisting device according to claim 7, characterized in that: The installation position and number of the hangers are determined according to the specific dimensions of the water-cooled wall (12).

9. The method for installing the boiler water wall assembly and hoisting device according to claim 7, characterized in that: The specific operation steps for assembling the water-cooled wall tubes (6) are as follows: S101, sleeve the assembly device (1) onto one end of the water-cooled wall tube (6), insert one end of the other water-cooled wall tube (6) into the assembly device (1), and connect and fix the assembly device (1) using fixing bolts (104); S102, inserting the wedge plate (204) of the adjusting screw (2) into the interface position of the water-cooled wall tube (6); S103, by adjusting the rotation angle of the first screw rod (202), the wedge plate (204) is moved so that the clearance between the water-cooled wall tubes (6) meets the requirement, and the fixing bolts (104) are tightened and fixed; S104, spot welding and fixing the interfaces of the water-cooled wall tubes (6) at the grooves on both sides of the middle of the angle steel (101); S105, rotating the assembly device (1) by 90 degrees, confirming that the water-cooled wall tubes (6) in this direction meet the requirements, and then spot welding the pipe joints at the grooves on both sides of the middle of the angle steel (101); S106. Finally, the assembly device (1) is completely dismantled, and the pipeline weld joint is formally welded.

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