Device and method for hoisting and installing boiler water wall panels

Abstract

The application discloses a kind of boiler water cooling wall group and hoist's device and installation method, including water cooling wall pipe group device and water cooling wall lifting appliance, group device is designed as a pair of angle steel holds the two sides pipe end of being to be matched, by fixed bolt connection and adjust interval, to satisfy control pipeline straightness and misalignment, retractable wedge is designed in weld gap to adjust pipe matching gap.Water cooling wall lifting appliance is designed as portable movable type, after multiple vertical plate is inserted into the sealing plate between water cooling wall pipe, lower end is inserted into plug-in board and realizes lockout.Then utilize this device to set multiple lifting points to water cooling wall, by crane, hoist pulley block and reverse link force cooperation, hoist water cooling wall as a whole and position.Compared with prior art, the device structure of the present application is convenient to disassemble, which significantly shortens the operation time of the boiler water cooling wall group and hoisting, greatly improves the efficiency, reduces the operation difficulty, and ensures the safety of the equipment and construction personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler water wall assembling and hoisting, in particular to a device and method for assembling and hoisting boiler water wall. BACKGROUND

[0002] Water wall is the main heating part of the boiler, which is composed of several rows of steel pipes and distributed around the boiler furnace. Its interior is flowing water or steam, and the outside accepts the heat of the boiler furnace flame. It mainly absorbs the radiant heat of high-temperature combustion products in the furnace, and the working medium rises in it and is heated and evaporated.

[0003] In modern industrial boiler installation engineering, such as power plants and steelmaking, sintering and dry quenching system waste heat boilers, the hoisting of the boiler water wall has always been a difficult problem, especially for the turning and hoisting of large-scale boiler water walls with large length and width. The main reason is that there is no special hoisting device, including the poor rigidity of the structure, the equipment is easy to deform and damage during hoisting, and the safety hidden danger is large. At the same time, due to the large length and width of the water wall of the large-scale boiler, the length is 20-30m, the upper and lower half bodies are often hoisted and positioned separately and then assembled and welded, which cannot realize the overall assembly and hoisting of the single-side furnace wall water wall, resulting in low construction efficiency and high cost.

[0004] The welding operation of the boiler piping system has a large workload and high welding construction quality requirements. Since the process flow of the main medium 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 assembly of the pipe group between the water wall and the water wall and between the water wall and the header occupies a large proportion of the entire boiler piping installation. The gap control requirements for the pipe alignment are very high. Therefore, ensuring that the gap and the joint gap of the pipe alignment meet the design documents and engineering quality requirements is the key to the construction of the boiler installation project. SUMMARY

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

[0006] To achieve this technical purpose, the present application adopts the following scheme:

[0007] In a first aspect, the present application provides a device for assembling and hoisting a boiler water-cooled wall, comprising an assembling device and a lifting device, the assembling device is arranged at the end of the water-cooled wall pipe to be assembled, and the water-cooled wall pipe to be assembled is clamped and fixed; the adjusting screw is arranged between the water-cooled wall pipes to be assembled, and is used for adjusting the gap between the pipes; the lifting device is detachably arranged on the water-cooled wall pipe after the assembling, and the lifting device is connected with a steel wire rope.

[0008] Further, the assembling device comprises symmetrical angle steels, the right-angle edges of the angle steels are provided with first ear plates, the back of the angle steels is provided with a boss, the boss is provided with a threaded hole penetrating through the angle steel, and the first ear plate is provided with a fixing bolt for connecting the symmetrical angle steels.

[0009] Further, the right-angle edge of the angle steel is provided with a groove at the edge, and the groove is located at the middle of the angle steel.

[0010] Further, the adjusting screw comprises a convex structure, the first screw is fixedly connected to the convex structure, and the end of the first screw is connected with a hexagonal rod; the wedge plate is movably connected to one end of the convex structure of the adjusting screw; and the wedge plate is arranged at the joint position of the water-cooled wall pipes to be assembled.

[0011] Further, the lifting device comprises a lifting device upper part and a lifting device lower part, and the lifting device upper part and the lifting device lower part are connected through bolts.

[0012] Further, the lifting device upper part comprises a first connecting plate, the first connecting plate is provided with second ear plates at both sides, and the first connecting plate is provided with connecting holes; the lifting device lower part comprises a second connecting plate, the second connecting plate is provided with vertical plates at both sides, the vertical plates are provided with insertion holes, the insertion holes are provided with insertion plates, one side of the insertion plate is provided with a locking screw, and the second connecting plate is provided with connecting holes corresponding to the first connecting plate, and the connecting bolts of the first connecting plate and the second connecting plate are arranged in the connecting holes.

[0013] In a second aspect, the present application provides an installation method using the device for assembling and hoisting a boiler water-cooled wall, comprising the following steps:

[0014] S1, the water-cooled wall pipes are assembled and welded by using the assembling device, and then the water-cooled wall pipes are connected to form a water-cooled wall;

[0015] S2, a rectangular hole is cut on the sealing plate between the water-cooled wall pipes, and the vertical plate of the lifting device lower part is inserted into the rectangular hole;

[0016] S3, the insertion plate is inserted into the insertion hole of the vertical plate, and the insertion plate is fixed by using the locking screw;

[0017] S4, the lifting device lower part and the lifting device upper part are connected through bolts, the lifting lug of the lifting device upper part is connected with a steel wire rope, and the steel wire rope is connected with a lifting hook.

[0018] S5, installing the lifting appliance at other positions of the water wall according to the method of steps S2-S4;

[0019] S6, setting a first hoist pulley block, a second hoist pulley block and a chain hoist on the top beam of the boiler frame;

[0020] S7, translating the water wall into the boiler by using the crane, connecting the hook of the second hoist pulley block with one of the steel wires and connecting the hook of the crane with the other steel wire, continuously lifting the second hoist pulley block and moving the tail of the water wall into the boiler frame by the crane;

[0021] S8, slowly hooking the water wall, connecting the steel wire connected with the hook of the crane with the hook of the first hoist pulley block, lifting the water wall to the vertical state by the cooperation of the first hoist pulley block and the second hoist pulley block;

[0022] S9, hooking off the first hoist pulley block and the steel wire, lifting the second hoist pulley block alone, and lifting the water wall to the design elevation;

[0023] S10, rotating and translating the water wall by using the crane and the chain hoist to make it reach the side of the boiler frame and install the hanger;

[0024] S11, installing the remaining water wall according to the above method.

[0025] Further, the installation position and the installation quantity of the lifting appliance are determined according to the specific size of the water wall.

[0026] Further, the specific operation steps of the pipe group of the water wall are as follows:

[0027] S101, sleeving the group device on one end of the water wall pipe, inserting the other end of the water wall pipe into the group device, and connecting and fixing the group device by using the fixing bolt;

[0028] S102, inserting the wedge plate of the adjusting screw into the interface position of the water wall pipe;

[0029] S103, moving the wedge plate by adjusting the rotation angle of the first screw, so that the gap between the water wall pipes meets the requirements, and the fixing bolt is tightened and fixed;

[0030] S104, spot welding and fixing the water wall pipe interface at the grooves on both sides of the middle part of the angle steel;

[0031] S105, rotating the group device by 90 degrees, and after confirming that the water wall pipe interface in this direction meets the requirements, spot welding and fixing the pipe interface at the grooves on both sides of the middle part of the angle steel;

[0032] S106, finally, the whole set of devices is dismantled, and the pipe weld is formally welded.

[0033] Compared with the prior art, the present application has the beneficial effects that:

[0034] ①The set of water-cooled wall pipe is suitable for the ground set of water-cooled wall and header, and is also suitable for the fixed port butt joint of various angles of water-cooled wall. The overall structure is convenient to disassemble, can adjust and adapt to the water-cooled wall pipe within a certain range of diameter, and improves the applicable range of the set of water-cooled wall pipe.

[0035] ②The hoisting device of the water-cooled wall pipe effectively disperses the load of the lug applied to the water-cooled wall pipe and the sealing plate therebetween during hoisting, and the horizontal plug effectively protects the pipe, avoiding the local damage or overall deformation of the water-cooled wall.

[0036] ③Since the hoisting device is convenient to set and disassemble, multiple hoisting points are uniformly arranged on the water-cooled wall, and the cooperation of the crane and the hoist system is implemented to prevent the local and overall deformation or damage of the water-cooled wall during hoisting, thereby realizing the overall modularization of the single-side water-cooled wall of the large boiler. On the basis of the embodiment, if the weight and size of the water-cooled wall are increased, the number of hoisting points can be increased in both the horizontal and vertical directions.

[0037] ④The method and device have simple structure, significantly shorten the operation time of the set of boiler water-cooled wall and hoisting, greatly improve the efficiency, reduce the difficulty of operation, and ensure the safety of equipment and construction personnel. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is the front view of the set of devices in the embodiment of the present application;

[0039] Figure 2 is the top view of the set of devices in the embodiment of the present application;

[0040] Figure 3 is the left view of the set of devices in the embodiment of the present application;

[0041] Figure 4 is the schematic diagram of the adjusting screw in the embodiment of the present application, the left drawing is the front view, and the right drawing is the side view;

[0042] Figure 5 is the schematic diagram of the set of operation in the embodiment of the present application;

[0043] Figure 6 is another schematic diagram of the set of operation in the embodiment of the present application;

[0044] Figure 7 is the schematic diagram of the upper part of the lifting appliance in the embodiment of the present application, the left drawing is the front view, and the right drawing is the side view;

[0045] Figure 8 is a schematic diagram of a lower part of a lifting appliance according to an embodiment of the present application, the left drawing is a front view and the right drawing is a side view;

[0046] Figure 9 is a schematic diagram of a plug plate according to an embodiment of the present application;

[0047] Figure 10 is a schematic diagram of a lifting appliance installation state according to an embodiment of the present application;

[0048] Figure 11 is a schematic diagram of a water-cooled wall and a lifting point arrangement according to an embodiment of the present application;

[0049] Figure 12 is a schematic diagram of a lifting operation according to an embodiment of the present application;

[0050] Figure 13 is a schematic diagram of another step of a lifting operation according to an embodiment of the present application;

[0051] Figure 14 is a schematic diagram of a further step of a lifting operation according to an embodiment of the present application;

[0052] Figure 15 is a schematic diagram of a still further step of a lifting operation according to an embodiment of the present application;

[0053] Figure 16 is a schematic diagram of a water-cooled wall arrangement according to an embodiment of the present application;

[0054] In the drawings, reference numerals: 1, a set of devices; 101, angle steel; 102, the first ear plate; 103, boss; 104, fixed bolt; 2, adjusting screw; 201, convex structure; 202, the first screw; 203, hexagonal rod; 204, wedge plate; 3, upper part of the lifting appliance; 301, the first connecting plate; 302, the second ear plate; 4, lower part of the lifting appliance; 401, the second connection; 402, the vertical plate; 403, the plug plate; 404, locking screw; 5, sealing plate; 6, water-cooled wall tube; 7, steel wire rope; 8, the first winch pulley block; 9, the second winch pulley block; 10, the crane; 11, the chain; 12, the water-cooled wall. DETAILED DESCRIPTION

[0055] In order to fully understand the objects, features and effects of the present application, the following specific embodiments are described in detail, but the present application is not limited to this.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed 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.

[0057] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0058] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple", "several" is two or more, unless otherwise explicitly and specifically limited.

[0059] Referring to Figures 1 to 10 The present application provides a device for assembling and hoisting a boiler water wall pipe, which comprises an assembling device 1 and a lifting device. The assembling device 1 is arranged at the end of the water wall pipe 6 to be assembled, and clamps and fixes the water wall pipe 6 to be assembled. An adjusting screw 2 is arranged on the assembling device 1, and is arranged between the water wall pipes 6 to be assembled, and is used to adjust the gap between the pipes. The lifting device is detachably arranged on the water wall pipe 6 after the assembling, and the lifting device is connected with a wire rope 7.

[0060] Referring to Figures 1 to 3 The assembling device 1 comprises symmetrical angle steels 101. The right-angle edges of the angle steels 101 are provided with first ear plates 102. The back portions of the angle steels 101 are provided with bosses 103, and the bosses 103 are provided with threaded holes penetrating through the angle steels 101. The first ear plates 102 are provided with fixing bolts 104, which are used to connect the symmetrical angle steels 101. The right-angle edges of the angle steels 101 are provided with grooves, which are located in the middle portions of the angle steels 101.

[0061] Referring to Figure 4 The adjusting screw 2 comprises a convex structure 201, and the convex structure 201 is fixedly connected with a first screw 202. The end portion of the first screw 202 is connected with a hexagonal rod 203. The convex structure 201 of the adjusting screw 2 is movably connected with a wedge plate 204 at one end. When assembling, the wedge plate 204 is arranged at the joint position of the water wall pipes 6 to be assembled.

[0062] In some embodiments, the set-up device 1 comprises two angle steels 101, a first lug plate 102 is welded on the straight edge of each angle steel 101, there are six first lug plates 102 in total, and a rectangular groove is formed in the middle of two straight edges 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 formed through the angle steel 101 and the boss 103, an adjusting screw 2 is inserted into the threaded hole, and the wedge plate 204 of the adjusting screw 2 is arranged between the two angle steels 101.

[0063] Referring to Figures 7 to 10 , the lifting appliance comprises a lifting appliance upper part 3 and a lifting appliance lower part 4 which are connected by bolts. The lifting appliance upper part 3 comprises a first connecting plate 301, second lug plates 302 are arranged on both sides of the first connecting plate 301, and connecting holes are formed in the first connecting plate 301; the lifting appliance lower part 4 comprises a second connecting plate 401, the second connecting plate 401 is provided with connecting holes corresponding to the connecting holes of the first connecting plate 301, and connecting bolts of the first connecting plate 301 and the second connecting plate 401 are arranged in the connecting holes; vertical plates 402 are arranged on both sides of the second connecting plate 401, and the vertical plates 402 are provided with insertion holes, and insertion plates 403 are arranged in the insertion holes, and the insertion plates 403 are provided with locking screws 404 on one side.

[0064] In another aspect, the present application provides a mounting method using the aforementioned boiler water wall set-up device and hoisting device, comprising the following steps (see Figures 11 to 16 ):

[0065] S1, the water wall pipes 6 are set up and welded by using the set-up device 1, and then the water wall pipes 6 are connected to form a water wall 12;

[0066] S101, the set-up device 1 is sleeved on one end of the water wall pipe 6, one end of another water wall pipe 6 is inserted into the set-up device 1, and the set-up device 1 is fixed and connected by using the fixing bolt 104;

[0067] S102, the wedge plate 204 of the adjusting screw 2 is inserted into the interface position of the water wall pipe 6;

[0068] S103, by adjusting the rotation angle of the first screw 202, the wedge plate 204 is moved, so that the water wall pipe 6 is aligned with a gap that meets the requirements, and the fixing bolt 104 is tightened and fixed;

[0069] S104, the interface of the water wall pipe 6 is spot-welded and fixed at the grooves on both sides of the middle of the angle steel 101;

[0070] S105, the set-up device 1 is rotated by 90 degrees, and after confirming that the water wall pipe 6 is aligned in this direction and meets the requirements, the pipe interface is spot-welded and fixed at the grooves on both sides of the middle of the angle steel 101;

[0071] S106, finally, the whole set of devices 1 is disassembled, and the pipe weld is formally welded;

[0072] S2, cut a rectangular hole on the sealing plate 5 between the water-cooled wall pipes 6, and insert the vertical plate 402 of the lower part of the lifting device 4 into the rectangular hole;

[0073] S3, insert the plug plate 403 into the insertion hole of the vertical plate 402, and fix the plug plate 403 with the locking screw 404;

[0074] S4, connect the lower part of the lifting device 4 and the upper part of the lifting device 3 through bolts, connect the lifting lugs of the upper part of the lifting device 3 with the steel wire ropes 7, and connect the steel wire ropes 7 with the hooks;

[0075] S5, according to the method of steps S2-S4, install the lifting device at other positions of the water-cooled wall 12, and the installation position and the installation number of the lifting device are determined according to the specific size of the water-cooled wall 12;

[0076] S6, set the first winch pulley block 8, the second winch pulley block 9, and the chain hoist 11 on the top beam of the boiler frame;

[0077] S7, use the crane 10 to translate the water-cooled wall 12 into the boiler, connect one of the steel wire ropes 7 with the hook of the second winch pulley block 9, connect the other steel wire rope 7 with the hook of the crane 10, continuously lift the second winch pulley block 9, and cooperate with the crane 10 to move the tail of the water-cooled wall 12 into the boiler frame;

[0078] S8, slowly hook the water-cooled wall 12, connect the steel wire rope 7 connected with the hook of the crane 10 with the hook of the first winch pulley block 8, cooperate with the second winch pulley block 9 to lift, and make the water-cooled wall 12 reach the vertical state;

[0079] S9, the first winch pulley block 8 is uncoupled with the steel wire rope 7, the second winch pulley block 9 is lifted alone, and the water-cooled wall 12 is lifted to the design elevation;

[0080] S10, cooperate with the crane 10 and the chain hoist 11 to rotate and translate the water-cooled wall 12, so that it reaches the side of the boiler frame, and the lifting device is installed;

[0081] S11, install the remaining water-cooled wall 12 according to the above method.

[0082] In some embodiments, referring to Figures 11 to 16 , after the water-cooled wall 12 is set and welded, 12 lifting points are set, and a lifting device is installed at each lifting point. There are 3 lifting points at ABCD, and the specific arrangement is shown in Figure 11 , in order to balance the force of the steel wire ropes 7 of the 3 lifting points during lifting and facilitate the leveling of the water-cooled wall 12, 1 lifting point is selected from the 3 lifting points to connect with the hook through the chain hoist 11.

[0083] The boiler steel structure frame needs to reserve a hoisting channel for the water cooling wall 12 at the bottom, that is, at one side of the rear water cooling wall 12, and the height is the height of the economizer. The water cooling wall 12 is first translated into the boiler frame by using the crane 10, then the second hoist pulley block 9 is used to hoist at positions A and B (6 points), the crane 10 hoists at positions C and D (6 points), the second hoist pulley block 9 is continuously lifted, and the crane 10 is matched to move the tail of the water cooling wall 12 into the boiler frame.

[0084] The water cooling wall 12 is slowly hooked, the crane 10 is unhooked at positions C and D of the water cooling wall 12, then the first hoist pulley block 8 is used to hoist at positions C and D (6 points), and the second hoist pulley block 9 is matched to lift until the water cooling wall 12 reaches the vertical state.

[0085] The first hoist pulley block 8 is unhooked at positions C and D (6 points) of the water cooling wall 12, the second hoist pulley block 9 is separately lifted to lift the water cooling wall 12 to the design elevation.

[0086] The crane 10 is hooked at positions A and B (6 points) of the water cooling wall 12, the water cooling wall 12 is translated and rotated by 90 degrees, due to the obstruction of the large plate beam at the top of the boiler frame, 2 large inverted chains 11 are matched to be slowly hooked and relayed, the hoisting points are still at positions A and B, after 2-3 times of slow hooking, the crane 10 and the inverted chain 11 are alternately translated to move the water cooling wall 12, so that the water cooling wall 12 reaches the side of the boiler frame, and after fine adjustment, the hanging is installed and hung below the plate beam at the top of the frame.

[0087] According to the above method, the left and right water cooling walls 12 of the boiler are installed. According to the following method, the front and rear water cooling walls 12 are continuously installed.

[0088] When the crane 10 hoists the front water cooling wall 12, it only needs to be translated to the left side of the boiler frame, and then 2 large inverted chains 11 are used for relay, fine adjustment and connection of the hanging. Finally, the rear water cooling wall 12 is hoisted, and after the second hoist pulley block 9 lifts the water cooling wall 12 into place, the crane 10 does not need to be moved, and the inverted chain 11 is directly used for relay, fine adjustment and connection of the hanging.

[0089] Compared with the prior art, the beneficial effects of the present application are that:

[0090] ①The water cooling wall tube group assembling device is suitable for assembling the water cooling wall and the header on the ground, and is also suitable for fixed port butt joint of the water cooling wall at various angles. The overall structure is convenient to disassemble, can be adjusted to adapt to the water cooling wall tubes with diameters within a certain range, and improves the application range of assembling and welding the water cooling wall tubes.

[0091] ②The water cooling wall tube hoisting device effectively disperses the load applied to the water cooling wall tube and the sealing plate therebetween by the lifting lug during hoisting, and the horizontal insertion plate effectively protects the tube group, so that the water cooling wall is prevented from being locally damaged or deformed as a whole due to excessive concentration.

[0092] ③Since the hoisting device is convenient to set up and remove, multiple hoisting points are evenly arranged on the water cooling wall, and through the cooperation of the crane and the hoist system, the local and overall deformation or damage of the water cooling wall during hoisting is prevented, thereby realizing the overall modular hoisting of the single-side water cooling wall of the large boiler furnace wall.

[0093] ④The method and device are simple in structure, the operation time of the assembling and hoisting of the boiler water cooling wall is obviously shortened, the efficiency is greatly improved, the operation difficulty is reduced, and the safety of the equipment and the construction personnel is ensured.

[0094] Finally, it should be noted that the above-mentioned is only the preferred embodiment of the present application, of course, the person skilled in the art can modify and change the present application, if these modifications and changes belong to the scope of the claims of the present application and its equivalent technology, all should be considered as the protection scope of the present application.

Claims

1. A method of erecting and hoisting a boiler water wall panel, characterized by, The method comprises the following steps: S1, using the group matching device (1) to group and match the water wall tubes (6) and connect the water wall tubes (6) to form the water wall (12); The group matching device (1) is arranged at the end of the water wall tubes (6) to be matched and matched, and the water wall tubes (6) to be matched and matched are clamped and fixed; the group matching device (1) is provided with an adjusting screw (2), the adjusting screw (2) is arranged between the water wall tubes (6) to be matched and matched, and is used for adjusting the gap between the pipes; a lifting appliance is detachably arranged on the water wall tubes (6) after the group matching, and the lifting appliance is connected with a steel wire rope (7); The lifting appliance comprises a lifting appliance upper part (3) and a lifting appliance lower part (4), and the lifting appliance upper part (3) and the lifting appliance lower part (4) are connected through bolts; The lifting appliance upper part (3) comprises a first connecting plate (301), second ear plates (302) are arranged on the two sides of the first connecting plate (301), and a connecting hole is formed in the first connecting plate (301); the lifting appliance lower part (4) comprises a second connecting plate (401), vertical plates (402) are arranged on the two sides of the second connecting plate (401), a plug hole is formed in 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); a connecting hole corresponding to the first connecting plate (301) is formed in the second connecting plate (401); S2, a rectangular hole is cut in the sealing plate (5) between the water wall tubes (6), and the vertical plate (402) of the lifting appliance lower part (4) is inserted into the rectangular hole; S3, the plug plate (403) is inserted into the plug hole of the vertical plate (402), and the plug plate (403) is fixed by the locking screw (404); S4, the lifting appliance lower part (4) and the lifting appliance upper part (3) are connected through bolts, the steel wire rope (7) is connected to the lifting lug of the lifting appliance upper part (3), and the steel wire rope (7) is connected to the lifting hook; S5, according to the method of steps S2-S4, the lifting appliance is arranged at other positions of the water wall (12); S6, a first winch pulley block (8), a second winch pulley block (9) and an inverted chain (11) are arranged on the top beam of the boiler frame; S7, the water wall (12) is translated into the boiler by using a crane (10), the hook of the second winch pulley block (9) is connected with one of the steel wire ropes (7), the hook of the crane (10) is connected with the other steel wire rope (7), the second winch pulley block (9) is continuously lifted, and the crane (10) is matched to move the tail of the water wall (12) into the boiler frame; S8, the water wall (12) is slowly hooked, the steel wire rope (7) connected with the hook of the crane (10) is connected with the hook of the first winch pulley block (8), the first winch pulley block (8) is matched with the second winch pulley block (9) to lift, and the water wall (12) reaches a vertical state; S9, the first winch pulley block (8) is uncoupled from the steel wire rope (7), the second winch pulley block (9) is lifted alone, and the water wall (12) is lifted to the design elevation; S10, the water wall (12) is rotated and translated by using the crane (10) and the inverted chain (11) to reach the side of the boiler frame, and a lifting device is arranged. S11. Install the remaining water-cooled wall (12) according to the above method.

2. The method of claim 1, wherein the boiler water wall panels are lifted by, The assembly device (1) includes symmetrically arranged angle steels (101), with a first ear plate (102) on the right-angle side of the angle steel (101), a boss (103) in the middle of the back of the angle steel (101), and a threaded hole in the boss (103) that passes through the angle steel (101); a fixing bolt (104) is provided at the first ear plate (102) for connecting the symmetrically arranged angle steels (101).

3. The method of claim 2, wherein the method further comprises: A groove is provided at the right-angle edge of the angle steel (101), and the groove is located in the middle of the angle steel (101).

4. The method of claim 1, wherein the boiler water wall panels are lifted by a crane. The adjusting screw (2) includes a protruding structure (201), on which a first screw (202) is fixedly connected, 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); during assembly, the wedge plate (204) is set at the interface position of the water-cooled wall tubes (6) to be assembled.

5. The method of claim 1, wherein the boiler water wall panels are lifted by, The installation location and quantity of the hoists are determined based on the specific dimensions of the water-cooled wall (12).

6. The method of claim 1, wherein the boiler water wall panels are lifted by a crane. The specific operation steps for assembling the water-cooled wall tubes (6) are as follows: S101. Fit the pairing 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 pairing device (1), and use the fixing bolt (104) to connect and fix the pairing device (1); S102. Insert 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 (202), the wedge plate (204) is moved so that the gap between the water-cooled wall tubes (6) meets the requirements, and the fixing bolt (104) is tightened and fixed. S104. Spot weld the interface of the water-cooled wall tube (6) at the grooves on both sides of the middle part of the angle steel (101); S105. Rotate the assembly device (1) 90 degrees and confirm that the water-cooled wall tubes (6) in this direction meet the requirements. Then, spot weld the pipe joints in the grooves on both sides of the middle of the angle steel (101). S106. Finally, dismantle the assembly device (1) completely and perform formal welding on the pipe joint.

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