Assembly frame for manufacturing flue gas outlet tube panel

Abstract

The utility model discloses a forward positioning assembly frame and a reverse positioning assembly frame for a flue gas outlet tube panel. The forward positioning assembly frame comprises a bottom plate, front inner supporting channel steel, rear inner supporting channel steel, first connecting channel steel, end comb tooth positioning channel steel, middle channel steel, side plates, angle steel, screws, nuts, second connecting channel steel, connecting blocks, connecting rods and hexagon nuts. The forward assembling frame can achieve scattered tube assembling operation of the left side area and the right side area of the tube panel. The reverse positioning assembly frame for the flue gas outlet tube panel has a rigid fixing effect on the tube panel, so that the purpose of controlling the size of the tube panel is achieved, the size of a product is easy to control, and the manufacturing period of the product is remarkably shortened while the quality of the product is ensured.

Description

Technical Field

[0001] The utility model relates to an assembly rack used for manufacturing a smoke outlet pipe panel. Background Art

[0002] At present, the company has launched a new type of CFB boiler, which has a new structure of flue gas outlet tube panel designed in the boiler component. The product structure features are as follows:

[0003] The flue gas outlet tube panel is designed to be trapezoidal in shape, with a small top and a large bottom, similar to a three-dimensional trapezoid (see Figure 1 to Figure 3 ). The upper end of the tube screen is set to be open; the lower end of the tube screen is set to be trumpet-shaped; both sides of the bottom of the tube screen are equipped with butt tube screens, which need to be butt-jointed with the flue. The inside of the smoke outlet tube screen is set to be hollow, and the smoke outlet tube screen is composed of multiple irregular single-piece (piece) tube screens spliced ​​together.

[0004] The single-piece (piece) tube screen is a polygonal shape welded by tubes and flat steels. Different pitch sizes are set between the tubes in the single-piece (piece) tube screen, and the gaps between the tubes are formed by embedded welding of steel plates.

[0005] For the flue gas outlet pipe screen of this design structure, if the conventional manufacturing process is adopted: irregular single-piece (piece) pipe screen is processed by segmentation, and then the module is formed by splicing and welding, this manufacturing method is very likely to cause distortion and deformation of the upper and lower ends of the pipe screen. In addition, there are large-area pins designed inside the flue gas outlet pipe screen, which are prone to deformation during the product manufacturing process or the pin welding process, making it difficult to control the product size, affecting product quality and production progress. Utility Model Content

[0006] The utility model provides a positive positioning assembly rack for manufacturing a smoke outlet pipe panel, and the technical solution is:

[0007] It includes a bottom plate, a front inner supporting channel steel, a rear inner supporting channel steel, a first connecting channel steel, an end comb positioning channel steel, an intermediate channel steel, a side plate, an angle steel, a screw rod, a nut, a second connecting channel steel, a connecting block, a connecting rod, and a hexagonal nut;

[0008] The front inner supporting channel steel is installed on the bottom plate, and the inclination angle is a°. The front end and the bottom of the smoke outlet pipe panel are also set to an inclined state, and the inclination angle is set to a°, that is, the inclination angle of the front inner supporting channel steel relative to the bottom plate is the same as the inclination angle of the smoke outlet pipe panel;

[0009] The rear inner support channel steel is installed on the bottom plate, and the inclination angle is b°. The rear end and the bottom of the flue gas outlet pipe panel are also set to an inclined state, and the inclination angle is set to b°, that is, the inclination angle of the rear inner support channel steel relative to the bottom plate is the same as the inclination angle of the flue gas outlet pipe panel;

[0010] The pitch size of the two ends of the front inner supporting channel steel and the rear inner supporting channel steel is S, which is the same as the internal opening size S of the port in the flue gas outlet pipe panel. The size and angle of the middle channel steel, side plate and the flue gas outlet pipe panel are also exactly the same;

[0011] There are two end comb tooth positioning channel steels, located at both ends of the bottom plate respectively. The comb tooth pitch and semicircular hole size in the end comb tooth positioning channel steel are the same as the butt tube panel pitch and tube semicircular hole size of the trumpet-shaped lower end of the flue gas outlet tube panel;

[0012] The front inner supporting channel steel and the rear inner supporting channel steel are installed inside the smoke outlet pipe panel, wherein the front end area of ​​the smoke outlet pipe panel is installed on the front inner supporting channel steel, and the rear end area of ​​the smoke outlet pipe panel is installed on the rear inner supporting channel steel; wherein the end of the connecting rod is provided with a thread, which is screwed together with a hexagonal nut; a through hole is provided in the connecting block, and a waist-round hole is provided in the second connecting channel steel, wherein the connecting rod can pass through the through hole in the connecting block; the connecting rod can pass through the waist-round hole in the second connecting channel steel.

[0013] The utility model also provides a smoke outlet tube panel reverse positioning assembly frame, the technical solution is:

[0014] It includes a platform, a front outer supporting channel steel, a rear outer supporting channel steel, a middle channel steel, a steel plate, an end comb positioning channel steel, a second connecting channel steel, a connecting block, a connecting rod, and a hexagonal nut;

[0015] The front external support channel steel is installed on the platform with an inclination angle of a°. The front end and bottom of the smoke outlet pipe panel are also set to an inclined state with an inclination angle of a°, that is, the inclination angle of the front external support channel steel relative to the platform is the same as the inclination angle of the smoke outlet pipe panel.

[0016] The rear external support channel steel is installed on the platform with an inclination angle of b°. The rear end and bottom of the smoke outlet pipe panel are also set to an inclined state with an inclination angle of b°, that is, the inclination angle of the rear external support channel steel relative to the platform is the same as the inclination angle of the smoke outlet pipe panel.

[0017] The pitch size of the two ends of the front external support channel steel and the rear external support channel steel is S, which is the same as the internal opening size S of the port in the flue gas outlet pipe panel;

[0018] There are two end comb tooth positioning channel steels, located at both ends of the platform respectively. The comb tooth pitch and semicircular hole size in the end comb tooth positioning channel steel are the same as the butt tube panel pitch and tube semicircular hole size of the trumpet-shaped lower end of the flue gas outlet tube panel;

[0019] The front outer supporting channel steel and the rear outer supporting channel steel are installed on the outside of the smoke outlet pipe panel; after the smoke outlet pipe panel is lifted and separated from a smoke outlet pipe panel forward positioning assembly frame, the smoke outlet pipe panel needs to be turned over 180 degrees, and the pipe panel is in an upside-down state, and the front end and the rear end of the smoke outlet pipe panel are placed on the front outer supporting channel steel and the rear outer supporting channel steel, and the pipe panel is tightly fixed to the assembly frame through the second connecting channel steel, the connecting block, the connecting rod, and the hexagonal nut; wherein the end of the connecting rod is provided with a thread, which is screwed and connected with the hexagonal nut; a through hole is provided in the connecting block, and a waist-round hole is provided in the second connecting channel steel, wherein the connecting rod can pass through the through hole in the connecting block; the connecting rod can pass through the waist-round hole in the second connecting channel steel.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the patent discloses a manufacturing process method for a smoke outlet pipe panel, in which the smoke outlet pipe panel is manufactured in sections, and subsequent products are assembled and formed by an assembly rack.

[0021] The tube panel can be welded between the tube and the flat steel through the splicing welding machine and gantry welding machine equipment, so the tube panel processing and manufacturing can be completed quickly and efficiently.

[0022] The utility model realizes the assembly operation of the loose pipes in the left and right areas of the pipe panel by providing a positive positioning assembly frame for the flue gas outlet pipe panel. That is, one end of the loose pipe is fixed to the pipe panel by spot welding; the other end of the loose pipe is positioned by the end comb positioning channel steel, and the other end of the loose pipe is tightly fixed to the assembly frame by angle steel, screw rod and nut, so as to realize the accurate and fast butt welding operation of the pipes.

[0023] The utility model provides a flue gas outlet tube panel reverse positioning assembly frame, after the tube panel is turned upside down, it is placed and fixed on the flue gas outlet tube panel reverse positioning assembly frame, and the internal pin butt welding operation is performed. The butt welding pins in this state have a wide product operation space and are not easy to deform. Subsequently, the tube panel and a flue gas outlet tube panel reverse positioning assembly frame are further used for heat treatment. During the product heat treatment process, the flue gas outlet tube panel reverse positioning assembly frame plays a rigid fixing role on the tube panel, thereby achieving the purpose of controlling the size of the tube panel, easily achieving the control of the product size, and significantly shortening the product manufacturing cycle while ensuring product quality.

[0024] The utility model device has the advantages of simple design structure, low manufacturing cost, convenient use, etc. Therefore, the utility model device has high versatility and practicality, and is convenient for large-scale use in production workshops. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Main view of a new structure of flue gas outlet pipe panel;

[0026] Figure 2: A top view of a new structure of flue gas outlet pipe panel;

[0027] Figure 3 : Left view of a new structure of flue gas outlet pipe panel;

[0028] Figure 4 : A schematic diagram of a smoke outlet pipe screen subdivision manufacturing scheme;

[0029] Figure 5 : A front view of the structure of a smoke outlet pipe panel forward positioning assembly rack;

[0030] Figure 6 : A top view of a smoke outlet pipe panel forward positioning assembly frame structure;

[0031] Figure 7 : A left view of a smoke outlet pipe panel forward positioning assembly frame structure;

[0032] Figure 8 :A smoke outlet pipe panel positive positioning assembly rack, Figure 6 AA section view of local area;

[0033] Fig. 9 :A smoke outlet pipe panel positive positioning assembly rack, Figure 7 BB section view of local area;

[0034] Fig.10 : The smoke outlet pipe panel is installed on the smoke outlet pipe panel positive positioning assembly frame, top view;

[0035] Fig.11 :The smoke outlet pipe panel is installed on the smoke outlet pipe panel positive positioning assembly frame. Fig.10 Middle A-direction view;

[0036] Fig.12 :The smoke outlet pipe panel is installed on the smoke outlet pipe panel positive positioning assembly frame. Fig.10 Middle C-direction view;

[0037] Fig.13 :The smoke outlet pipe panel is installed on the smoke outlet pipe panel positive positioning assembly frame. Fig.11 A partial enlarged view of the "X" area in the middle;

[0038] Fig.14 :The smoke outlet pipe panel is installed on the smoke outlet pipe panel positive positioning assembly frame. Fig.11 Middle D-direction view;

[0039] Fig.15 : The smoke outlet pipe panel is installed on the smoke outlet pipe panel reverse positioning assembly frame, front view;

[0040] Fig.16:The smoke outlet pipe panel is installed on the smoke outlet pipe panel reverse positioning assembly frame. Fig.15 Middle E-direction view;

[0041] Fig.17 :The smoke outlet pipe panel is installed on the smoke outlet pipe panel reverse positioning assembly frame. Fig.16 Center F view.

[0042] Summary of reference numerals: bottom plate 1, front inner supporting channel steel 2, rear inner supporting channel steel 3, first connecting channel steel 4, end comb positioning channel steel 5, middle channel steel 6, side plate 7, angle steel 8, screw rod 9, nut 10, second connecting channel steel 11, connecting block 12, connecting rod 13, hexagonal nut 14, platform 15, front outer supporting channel steel 16, rear outer supporting channel steel 17, middle channel steel 6, steel plate 18, front end of tube panel A, rear end of tube panel B, left side of tube panel C, right side of tube panel D. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0044] A flue gas outlet tube panel manufacturing process method has the following steps:

[0045] Step 1:

[0046] For the design structure of the flue gas outlet tube panel, firstly, the front end A of the tube panel and the rear end B of the tube panel are set as the tube panel processing areas.

[0047] The pitches of the tubes in the tube panel processing area are the same. In this embodiment, the tube specification is Ф48×10mm, the tube pitch is uniformly set to 80mm, and the gap between the tubes is formed by embedding and welding flat steel with a width of S=32mm.

[0048] Figure 4 The two areas A and B marked in the middle can be welded between pipes and flat steels through splicing welding machines and gantry welding machines to complete the pipe panel processing work in the two areas A and B.

[0049] Step 2:

[0050] Secondly, the two areas C on the left side of the tube panel and D on the right side of the tube panel are set as the areas where the loose tubes and flat steel are spliced. The pitches between the tubes in the areas where the loose tubes and flat steel are spliced ​​are different. In this embodiment, the tube specifications are Ф48×10mm, and the pitches between the tubes are not uniform. Therefore, the flue gas outlet tube panel is manufactured in sections, and the subsequent products are assembled and formed by the assembly rack. That is: first, the tube panel is divided into the front end and the rear end of the tube panel manufacturing part; secondly, it is divided into the left and right sides where the loose tubes are connected to the tube panel and the steel plates are welded between the loose tubes.

[0051] like Figure 5-Figure 14 As shown, in order to successfully install Figure 4 For the pipes in the two areas marked C and D, it is necessary to design a forward positioning assembly frame for the manufacture of the smoke outlet pipe screen. The forward positioning assembly frame includes a base plate 1, a front inner supporting channel steel 2, a rear inner supporting channel steel 3, a first connecting channel steel 4, an end comb tooth positioning channel steel 5, an intermediate channel steel 6, a side plate 7, an angle steel 8, a screw rod 9, a nut 10, a second connecting channel steel 11, a connecting block 12, a connecting rod 13, and a hexagonal nut 14.

[0052] like Figure 5 As shown, the front inner support channel steel 2 is installed on the bottom plate 1, and the inclination angle is a°, and the front end and the bottom of the flue gas outlet pipe panel are also set to an inclined state, and the inclination angle is set to a°. Therefore, the inclination angle of the front inner support channel steel 2 relative to the bottom plate 1 is the same as the inclination angle of the flue gas outlet pipe panel.

[0053] like Figure 5 As shown, the rear inner support channel steel 3 is installed on the bottom plate 1, and the inclination angle is b°, and the rear end and the bottom of the flue gas outlet pipe panel are also set to an inclined state, and the inclination angle is set to b°. Therefore, the inclination angle of the rear inner support channel steel 3 relative to the bottom plate 1 is the same as the inclination angle of the flue gas outlet pipe panel.

[0054] like Figure 6 As shown, the pitch size of the two ends of the front inner supporting channel steel 2 and the rear inner supporting channel steel 3 is S, which is the same as the internal opening size S of the port in the flue gas outlet pipe panel. The size and angle of the middle channel steel 6 and the side plate 7 are also exactly the same as those in the flue gas outlet pipe panel.

[0055] like Figure 6 As shown, there are two end comb tooth positioning channel steels 5, which are respectively located at the two ends of the bottom plate 1. The comb tooth pitch and semicircular hole size in the end comb tooth positioning channel steel 5 are the same as the pitch of the butt-jointed tube panel and the semicircular hole size of the tube which is set as a trumpet shape at the lower end of the smoke outlet tube panel.

[0056] The shape of the positive positioning assembly frame matches the flue gas outlet pipe panel, wherein the front inner supporting channel steel 2 and the rear inner supporting channel steel 3 are installed inside the flue gas outlet pipe panel, wherein the front end area A of the flue gas outlet pipe panel is installed on the front inner supporting channel steel 2, and the rear end area B of the flue gas outlet pipe panel is installed on the rear inner supporting channel steel 3. Fig.14 As shown, the end of the connecting rod 13 is provided with a thread, which is screwed together with the hexagonal nut 14. A through hole is provided in the connecting block 12, and a waist-shaped hole is provided in the second connecting channel steel 11, wherein the connecting rod 13 can pass through the through hole in the connecting block 12; and can pass through the waist-shaped hole in the second connecting channel steel 11.

[0057] The installation order is:

[0058] First, let the connecting rod 13 pass through the through hole in the connecting block 12, as shown in FIG. Fig.14 shown.

[0059] Secondly, if Fig.11 and Fig.14 As shown, the connection block 12 is welded and fixed to the front end area A and the rear end area B in the smoke outlet tube panel, and is located inside the smoke outlet tube panel.

[0060] like Fig.11 and Fig.14 As shown, the second connecting channel steel 11 is installed outside the inner supporting channel steel 2 and the rear inner supporting channel steel 3, and the second connecting channel steel 11 and the inner supporting channel steel 2 and the rear inner supporting channel steel 3 are required to be cross-shaped, and the connecting rod 13 is allowed to pass through the waist-round hole in the second connecting channel steel 11. Fig.14 For the forward positioning assembly frame, the front end A of the tube panel and the rear end B of the tube panel are tightly fixed on the front inner supporting channel steel 2 and the rear inner supporting channel steel 3.

[0061] The end of the connecting rod 13 is screwed and fixed by a hexagonal nut 14 .

[0062] Through this connection method, the front end area A of the smoke outlet pipe panel can be quickly fixed tightly on the front internal supporting channel steel 2; the rear end area B of the smoke outlet pipe panel can be quickly fixed tightly on the rear internal supporting channel steel 3, thereby achieving the purpose of firstly fixing the front end area A and the rear end area B in the smoke outlet pipe panel tightly with the positive positioning assembly frame.

[0063] like Fig.11 and Fig.13 As shown, finally install the loose pipes in the two areas of C on the left side and D on the right side of the flue gas outlet pipe panel. That is: one end of the loose pipe is fixed with the front end A and the rear end pipe panel B by spot welding; the other end of the loose pipe is positioned by the end comb positioning channel steel 5, and the other end of the loose pipe is tightly fixed with the assembly frame by angle steel 8, screw rod 9, nut 10, so as to realize the precise and fast butt welding operation of the pipes. The gap between the pipes is measured by the waiting template, and the steel plate is laid out through the template. After cutting according to the sample, it is embedded in the gap between the pipes and then spot welded and fixed. Then, intermittent welding is performed between the loose pipes and the steel plates in the two external areas of C on the left side and D on the right side on the outside of the flue gas outlet pipe panel.

[0064] It should be noted that, through the positive positioning assembly frame, the first step is to realize the positive swing installation of the flue gas outlet pipe panel in the assembly frame to achieve accurate and fast butt welding operation, and the second step is to realize the spot welding and subsequent intermittent welding operation between the loose pipes and the steel plates in the two external areas C on the left side and D on the right side of the flue gas outlet pipe panel.

[0065] Step 3:

[0066] According to the design structure of the flue gas outlet pipe panel, in order to reduce the welding deformation of the two areas C on the left side and D on the right side of the pipe panel and control the product size, the flue gas outlet pipe panel needs to be lifted and separated from a flue gas outlet pipe panel positive positioning assembly frame.

[0067] like Figure 15-17 As shown, in order to smoothly weld Figure 4 The fillet welds between the pipes and the flat steel in the C and D areas are also designed to prevent deformation during the internal pin welding process and to achieve welding size control. It is necessary to design a reverse positioning assembly frame for the manufacture of flue gas outlet pipe screens, such as Fig.15 As shown, the reverse positioning assembly frame includes a platform 15, a front outer supporting channel steel 16, a rear outer supporting channel steel 17, an intermediate channel steel 6, a steel plate 18, an end comb positioning channel steel 5, a second connecting channel steel 11, a connecting block 12, a connecting rod 13, and a hexagonal nut 14.

[0068] like Fig.15 As shown, the front outer support channel steel 16 is installed on the platform 15, and the inclination angle is a°, and the front end and the bottom of the smoke outlet pipe panel are also set to an inclined state, and the inclination angle is set to a°. Therefore, the inclination angle of the front outer support channel steel 16 relative to the platform 15 is the same as the inclination angle of the smoke outlet pipe panel.

[0069] like Fig.15 As shown, the rear outer support channel steel 17 is installed on the platform 15, and the inclination angle is b°, and the rear end and the bottom of the flue gas outlet pipe panel are also set to an inclined state, and the inclination angle is set to b°. Therefore, the inclination angle of the rear outer support channel steel 17 relative to the platform 15 is the same as the inclination angle of the flue gas outlet pipe panel.

[0070] like Fig.16 As shown, the distance between the two outermost front external supporting channel steels 16 is S, and the distance between the two outermost rear external supporting channel steels 17 is S, which is the same as the internal opening size S of the port in the flue gas outlet pipe panel.

[0071] like Fig.15 As shown, there are two end comb tooth positioning channel steels 5, which are respectively located at both ends of the platform 15. The comb tooth pitch and semicircular hole size in the end comb tooth positioning channel steel 5 are the same as the pitch of the butt-jointed tube panel and the semicircular hole size of the tube which is set as a trumpet shape at the lower end of the flue gas outlet tube panel.

[0072] The shape of the reverse positioning assembly frame matches the flue gas outlet pipe panel, such as Fig.15As shown, the front outer supporting channel steel 16 and the rear outer supporting channel steel 17 are installed outside the flue gas outlet pipe panel. After the flue gas outlet pipe panel is lifted and separated from a flue gas outlet pipe panel forward positioning assembly frame, the flue gas outlet pipe panel needs to be turned over 180 degrees, the pipe panel is in an upside-down state, and the front and rear areas (areas A and B) of the flue gas outlet pipe panel are placed on the front outer supporting channel steel 16 and the rear outer supporting channel steel 17, and the pipe panel is tightly fixed to the assembly frame through the second connecting channel steel 11, the connecting block 12, the connecting rod 13, and the hexagonal nut 14.

[0073] The smoke outlet pipe screen diffuser is positioned by the end comb positioning channel steel 5, and the diffuser is tightly fixed to the reverse positioning assembly frame by the angle steel 8, screw rod 9 and nut 10. Fig.13 , connection method and Fig.13 Consistent.

[0074] The installation order is:

[0075] First, let the connecting rod 13 pass through the through hole in the connecting block 12. Fig.17 shown.

[0076] Secondly, the connection block 12 is welded and fixed to the front end area A and the rear end area B in the smoke outlet tube panel, and is located outside the smoke outlet tube panel. Fig.15 shown.

[0077] The second connecting channel steel 11 is installed outside the front outer supporting channel steel 16 and the rear outer supporting channel steel 17, and the second connecting channel steel 11 and the front outer supporting channel steel 16 and the rear outer supporting channel steel 17 are required to be cross-shaped, and the connecting rod 13 is allowed to pass through the waist-round hole in the second connecting channel steel 11. Figure 16-17 shown.

[0078] like Fig.17 As shown, the ends of the connecting rod 13 are screwed and fixed by the hexagonal nut 14, so that the front end A of the tube panel and the rear end B of the tube panel can be closely fixed on the front outer support channel steel 16 and the rear outer support channel steel 17. For the reverse positioning assembly frame, the front end A of the tube panel and the rear end B of the tube panel can be closely fixed on the front outer support channel steel 16 and the rear outer support channel steel 17.

[0079] Through this connection method, the front end area A of the smoke outlet pipe panel can be quickly fixed tightly on the front external supporting channel steel 16; the rear end area B of the smoke outlet pipe panel can be quickly fixed tightly on the rear external supporting channel steel 17, thereby achieving the purpose of tightly fixing the front end area A and the rear end area B in the smoke outlet pipe panel to the reverse positioning assembly frame.

[0080] Finally, intermittent welding is achieved between the diffused pipes and the steel plates in the two inner areas on the left and right sides (the two inner areas C and D) inside the flue gas outlet pipe panel.

[0081] It should be noted that, through the reverse positioning assembly frame, the smoke outlet pipe panel is reversely mounted and fixed in the reverse positioning assembly frame, so as to realize intermittent welding operations between the loose pipes and the steel plates in the two internal areas (the two internal areas C and D) on the left and right sides of the smoke outlet pipe panel.

[0082] Step 4:

[0083] In order to reduce the welding deformation of the two areas C on the left side of the flue gas outlet pipe panel and D on the right side of the pipe panel and control the product size, it is necessary to release the connection and fixation between the reverse positioning assembly frame and the smoke gas outlet pipe panel. That is, by loosening the hexagonal nut 14, the second connecting channel steel 11 can be removed. By grinding away the spot welds between the front end A of the pipe panel, the rear end B of the pipe panel and the connecting block 12, the connecting block 12 and the connecting rod 13 can be removed, and the connection and fixation between the front end A of the pipe panel, the rear end B of the pipe panel and the front external support channel steel 16 and the rear external support channel steel 17 can be achieved. Then, by loosening the nut 10 and removing the angle steel 8, the connection between the smoke gas outlet pipe panel and the reverse positioning assembly frame can be released, and the purpose of lifting the smoke gas outlet pipe panel from the reverse positioning assembly frame can be achieved. The purpose of lifting the smoke gas outlet pipe panel from a smoke gas outlet pipe panel reverse positioning assembly frame is further achieved;

[0084] Repeat the above step 2 to reinstall the smoke outlet pipe panel in the forward positioning assembly frame to complete the remaining external welding operations of the loose pipes and steel plates in the two external areas on the left and right sides of the smoke outlet pipe panel (the two external areas C and D).

[0085] Repeat the above step 3 to reinstall the smoke outlet pipe panel in the reverse positioning assembly frame to complete the remaining internal welding operations between the loose pipes and the steel plates in the two internal areas on the left and right sides of the smoke outlet pipe panel (the two internal areas C and D).

[0086] Afterwards, the hexagonal nut 14 between the flue gas outlet tube panel reverse positioning assembly frame and the tube panel is not loosened, the spot welding seams between the front end A of the tube panel, the rear end B of the tube panel and the connecting block 12 are not polished and removed, and the connecting block 12 and the connecting rod 13 are not removed, and the front end A of the tube panel, the rear end B of the tube panel and the front external supporting channel steel 16 and the rear external supporting channel steel 17 are kept tightly fixed. The nut 10 is not loosened, the angle steel 8 is kept in a state of clamping the loose tube, and the loose tube and the assembly frame are kept tightly fixed, and the tube panel is still installed in the reverse positioning assembly frame, that is, the flue gas outlet tube panel is in an inverted state, and non-destructive testing is performed on the butt welds of the tubes and the fillet welds between the tubes and the flat steels, and random inspections are performed according to percentages, and then pin welding is performed inside the flue gas outlet tube panel, that is, the flue gas outlet tube panel is in an inverted state, and internal pin welding is performed. In this state, pin welding is performed, the product has a wide operating space, is not easy to deform, and the product size control is easy to achieve;

[0087] Step 5:

[0088] After the flue gas outlet pipe panel welding work is completed, non-destructive testing is performed on the pipe butt welds and the fillet welds between the pipe and the flat steel (100% inspection). The pipe panel and the reverse positioning assembly frame are subsequently required to be heat treated together. During the product heat treatment process, the reverse positioning assembly frame plays a rigid fixing role on the pipe panel, thereby achieving the purpose of controlling the size of the pipe panel.

[0089] After the heat treatment process is completed, the connection and fixation between the reverse positioning assembly frame and the smoke outlet pipe panel are released. That is, by loosening the hexagonal nut 14, the second connecting channel steel 11 can be removed. By grinding away the spot welds between the front end A of the pipe panel, the rear end B of the pipe panel and the connecting block 12, the connecting block 12 and the connecting rod 13 can be removed, and the connection and fixation between the front end A of the pipe panel, the rear end B of the pipe panel and the front external support channel steel 16 and the rear external support channel steel 17 can be achieved. Then, by loosening the nut 10 and removing the angle steel 8, the connection between the smoke outlet pipe panel and the reverse positioning assembly frame can be released, and the purpose of lifting the smoke outlet pipe panel out of the reverse positioning assembly frame can be achieved. The purpose of lifting the smoke outlet pipe panel out of the reverse positioning assembly frame is further achieved, and preparations are made for the subsequent implementation of step 6.

[0090] Step 6:

[0091] The tube panel is calibrated by heating. The thermal calibration temperature is required to be less than 720℃. After the calibration operation is completed, the tube panel is installed as a whole in the positive positioning assembly frame for sample calibration. Non-destructive testing is performed on the tube panel corner welds and thermal calibration areas.

[0092] The spot check of tube screen hardness is mainly aimed at the tube surface, the fillet welds between the tube and the flat steel, and the heat correction area.

[0093] Water pressure test of pipe screen, marking of pipe ends, machining, final dimension inspection of products and paint packaging.

[0094] Until all manufacturing processes of the tube screen are completed.

[0095] The above is a preferred embodiment of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and improvements can be made without departing from the principle of the present utility model. These improvements and improvements are also regarded as the protection scope of the present utility model. The protection scope of the present utility model shall be based on the definition of the claims.

Claims

1. A positive positioning assembly rack for manufacturing a flue gas outlet tube panel, characterized in that: It comprises a bottom plate (1), a front inner supporting channel steel (2), a rear inner supporting channel steel (3), a first connecting channel steel (4), an end comb tooth positioning channel steel (5), an intermediate channel steel (6), a side plate (7), an angle steel (8), a screw rod (9), a nut (10), a second connecting channel steel (11), a connecting block (12), a connecting rod (13), and a hexagonal nut (14); The front inner supporting channel steel (2) is installed on the bottom plate (1) and has an inclination angle of a°. The front end and the bottom of the smoke outlet pipe panel are also set to be in an inclined state and the inclination angle is set to a°, that is, the inclination angle of the front inner supporting channel steel (2) relative to the bottom plate (1) is the same as the inclination angle of the smoke outlet pipe panel; The rear inner supporting channel steel (3) is installed on the bottom plate and has an inclination angle of b°. The rear end and the bottom of the flue gas outlet pipe panel are also set in an inclined state and the inclination angle is set to b°, that is, the inclination angle of the rear inner supporting channel steel relative to the bottom plate is the same as the inclination angle of the flue gas outlet pipe panel; The pitch dimension of the two ends of the front inner supporting channel steel and the rear inner supporting channel steel is S, which is the same as the internal opening dimension S of the port in the flue gas outlet pipe panel. The dimensions and angles of the middle channel steel (6) and the side plate (7) are also exactly the same as those in the flue gas outlet pipe panel. Two end comb tooth positioning channel steels (5) are provided, which are located at both ends of the bottom plate respectively. The comb tooth pitch and the size of the semicircular holes in the end comb tooth positioning channel steels are the same as the pitch and the size of the semicircular holes of the butt tube panel which is set in a trumpet shape at the lower end of the flue gas outlet tube panel; The front inner supporting channel steel (2) and the rear inner supporting channel steel (3) are installed inside the smoke outlet pipe panel, wherein the front end region (A) of the smoke outlet pipe panel is installed on the front inner supporting channel steel (2), and the rear end region (B) of the smoke outlet pipe panel is installed on the rear inner supporting channel steel (3); wherein the end of the connecting rod (13) is provided with a thread, which is screwed together with the hexagonal nut (14); a through hole is provided in the connecting block (12), and a waist-shaped hole is provided in the second connecting channel steel (11), wherein the connecting rod (13) can pass through the through hole in the connecting block (12); and the connecting rod (13) can pass through the waist-shaped hole in the second connecting channel steel (11).

2. A reverse positioning assembly rack for manufacturing a flue gas outlet tube panel, characterized in that: It comprises a platform (15), a front outer supporting channel steel (16), a rear outer supporting channel steel (17), an intermediate channel steel (6), a steel plate (18), an end comb tooth positioning channel steel (5), a second connecting channel steel (11), a connecting block (12), a connecting rod (13), and a hexagonal nut (14); The front outer supporting channel steel (16) is installed on the platform (15) and has an inclination angle of a°. The front end and the bottom of the smoke outlet pipe panel are also set to an inclined state, and the inclination angle is set to a°, that is, the inclination angle of the front outer supporting channel steel (16) relative to the platform (15) is the same as the inclination angle of the smoke outlet pipe panel; The rear outer supporting channel steel (17) is installed on the platform (15) and has an inclination angle of b°. The rear end and the bottom of the smoke outlet pipe panel are also set in an inclined state and the inclination angle is set to b°, that is, the inclination angle of the rear outer supporting channel steel relative to the platform is the same as the inclination angle of the smoke outlet pipe panel; The pitch dimension at both ends of the front outer supporting channel steel (16) and the rear outer supporting channel steel (17) is S, which is the same as the internal opening dimension S of the port in the flue gas outlet pipe panel; Two end comb tooth positioning channel steels (5) are provided, which are located at both ends of the platform (15), respectively. The comb tooth pitch and the size of the semicircular holes in the end comb tooth positioning channel steels are the same as the pitch and the size of the semicircular holes of the butt tube panel in a trumpet shape at the lower end of the flue gas outlet tube panel; The front outer supporting channel steel (16) and the rear outer supporting channel steel (17) are installed outside the flue gas outlet pipe panel; After the smoke outlet pipe panel is lifted and separated from the forward positioning assembly frame, the smoke outlet pipe panel needs to be turned over 180 degrees, the pipe panel is in an upside-down state, and the front and rear areas of the smoke outlet pipe panel are placed on the front external support channel steel (16) and the rear external support channel steel (17), and the pipe panel is tightly fixed to the assembly frame through the second connecting channel steel (11), the connecting block (12), the connecting rod (13), and the hexagonal nut (14); wherein the end of the connecting rod (13) is provided with a thread, and is screwed and connected with the hexagonal nut (14); a through hole is provided in the connecting block (12), and a waist-shaped hole is provided in the second connecting channel steel (11), wherein the connecting rod (13) can pass through the through hole in the connecting block (12); and the connecting rod (13) can pass through the waist-shaped hole in the second connecting channel steel (11).

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