Air-cooled heat exchange tube bundle and lower header docking position adjustment device and adjustment method

Abstract

The present invention discloses an air-cooled heat exchange tube bundle and a lower header docking adjustment device and an adjustment method, which solves the problem of how to accurately dock and position the lower part of the heat exchange tube bundle on the direct air-cooled A-type frame with the condensate collection pipe. The present invention uses an L-shaped connecting plate to fix the lower end tube sheet of the heat exchange tube bundle with the lateral position adjustment substrate, and a curved clamp is fixedly connected between the two lateral position adjustment substrates, so that the heat exchange tube bundle, the two lateral position adjustment substrates and the curved clamp form a follow-up whole, and top screws are respectively set on the bottom end of the curved clamp and the two lateral position adjustment substrates. The horizontal and vertical positions of the heat exchange tube bundle and its tube sheet on the direct air-cooled A-type frame are changed by rotating these three top screws, so as to achieve accurate positioning of the tube sheet of the heat exchange tube bundle on the two side plates supporting the condensate collection pipe at the bottom, and maintain the positioning until the welding task of the two is completed. It not only reduces the installation difficulty and, but also improves the stability of the engineering installation.

Description

Technical Field

[0001] The invention relates to a device for adjusting the butt joint of an air-cooling heat exchange tube bundle and a lower header, and in particular to a device for adjusting the butt joint of an air-cooling heat exchange tube bundle and a lower header and an adjustment method. Background Art

[0002] Thermal power generation utilizes the combustion of coal and other fuels in boilers to generate high-temperature and high-pressure steam, which drives the turbine to drive the generator to generate electricity; the direct air cooling system is an important part of a thermal power plant, which uses an axial flow fan to make cold air flow through the heat exchange tube bundle (air-cooled condenser) to cool the exhaust steam of the turbine, and the condensed water is recovered and sent back to the condensate system; the heat exchange tube bundle installed on the direct air cooling A-type frame is fixed on the saddle support group on the A-type frame for supporting the top plate of the tube bundle, and the lower part is supported on the side plate of the condensate collecting pipe; because the condensate collecting pipe has been installed before the heat exchange tube bundle is hoisted, the side of the upper tube sheet of the heat exchange tube bundle with bolts is located on the inner side of each column, and the lower tube sheet of the heat exchange tube bundle is located in the middle of the A-type frame support. After the heat exchange tube bundle is hoisted in place, it is necessary to accurately adjust and fix the position, elevation and verticality of the lower end of the heat exchange tube bundle on the lower support condensate collecting pipe side plate; the existing method for installing and positioning the heat exchange tube bundle is to use a handheld The alignment is adjusted manually by using a fall chain and other tools; there is a large docking error between the lower end of the heat exchange tube bundle and the lower supporting condensate collection tube (lower header), and the alignment accuracy cannot be guaranteed. It often requires multiple hoisting and alignment to meet the design requirements; in addition, after the alignment of the lower part of the heat exchange tube bundle and the lower supporting condensate collection tube is completed, the welding connection work is to be carried out, and the two welding connectors are required to remain stationary relative to each other to ensure the welding quality. The existing technology relies on hand-held fall chains or other tools to complete the work. Since the tube bundle is installed at high altitude and in a relatively small space, the operation labor intensity is high. During the welding process, the two welded bodies are prone to shaking, resulting in the entire The tube bundle welding position between the rows is far from the designed installation position, which directly affects the normal operation of the equipment; there is an urgent need to develop a stable, reliable, simple clamping and positioning device and positioning method on site to complete the tasks of lifting, adjusting and positioning the tube bundle. Summary of the invention

[0003] The invention provides an air-cooled heat exchange tube bundle and a lower header docking adjustment device and an adjustment method, which solves the technical problem of how to accurately dock and position the lower part of the heat exchange tube bundle on a direct air-cooled A-type frame with a condensate collection pipe.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The overall concept of the present invention is: since the lower supporting condensate collecting tube on the direct air cooling A-type frame has been fixedly installed, the heat exchange tube bundle has been hoisted in place, the upper end of the heat exchange tube bundle has been set on the saddle support group for supporting the tube bundle top plate on the A-type frame, and the lower end tube sheet of the heat exchange tube bundle is set on the two side plates of the lower supporting condensate collecting tube, the technical scheme of the present invention is to complete the docking adjustment and accurate positioning between the lower end tube sheet of the heat exchange tube bundle and the two side plates on the lower supporting condensate collecting tube, and then complete the welding task between the two; the present invention fixes the lower end tube sheet of the heat exchange tube bundle and the lateral position adjustment base plate together through the L-shaped connecting plate, and fixes the two lateral position adjustment base plates between them. An arc clamp is fixedly connected to make the heat exchange tube bundle, two lateral position adjustment base plates and the arc clamp form a follow-up whole, and top screws are respectively arranged on the bottom end of the arc clamp and the two lateral position adjustment base plates. The two top screws are respectively connected to the two side plates on the lower support condensate collection tube, and the third top screw is connected to the lower support condensate collection tube. The fixed lower support condensate collection tube and its two side plates are used as a reference. The horizontal and vertical positions of the heat exchange tube bundle and its tube sheet on the direct air cooling A-type frame are changed by rotating the three top screws, so as to achieve accurate positioning of the tube sheet of the heat exchange tube bundle on the two side plates of the lower support condensate collection tube, and maintain the positioning until the welding task of the two is completed.

[0006] A device for adjusting the connection between an air-cooled heat exchange tube bundle and a lower header, comprising an A-shaped frame, a condensate collecting tube fixedly installed at the lower end of the A-shaped frame, a left plate and a right plate of the collecting tube fixedly arranged on the condensate collecting tube, a heat exchange tube bundle suspended in place above the condensate collecting tube, a bottom tube sheet of the heat exchange tube bundle arranged at the lower end of the heat exchange tube bundle, a left L-shaped connecting plate and a right L-shaped connecting plate respectively connected to the bottom tube sheet of the heat exchange tube bundle, a vertical plate of the left L-shaped connecting plate fixedly connected to a left adjustment base plate in a transverse position by a left connecting bolt, a vertical plate of the right L-shaped connecting plate fixedly connected to a right adjustment base plate in a transverse position by a right connecting bolt, a transverse adjustment base plate arranged on the left adjustment base plate in a transverse position Adjust the top screw to the left, and a right horizontal position adjustment top screw is arranged on the right horizontal position adjustment base plate, the tail end of the left horizontal position adjustment top screw is connected to the top of the left side plate of the collecting tube, and the right horizontal position adjustment top screw is connected to the top of the right side plate of the collecting tube, and an arc clamp is connected between the lower bottom surface of the left horizontal position adjustment base plate and the lower bottom surface of the right horizontal position adjustment base plate, and the arc clamp is surrounded on the condensate collecting tube, and a longitudinal position adjustment top screw threading hole is arranged at the lower end of the arc clamp, and the longitudinal position adjustment top screw is threaded in the longitudinal position adjustment top screw threading hole, and an arc support plate is connected to the tail end of the longitudinal position adjustment top screw, and the arc support plate is top connected to the lower bottom surface of the condensate collecting tube.

[0007] A lower protrusion of the left adjusting substrate is fixedly arranged on the lower bottom surface of the left adjusting substrate in the horizontal position, a left U-shaped bayonet is arranged at the left end of the arc-shaped clamp, the lower protrusion of the left adjusting substrate is arranged in the left U-shaped bayonet, and a left U-shaped bayonet connecting bolt is arranged between the lower protrusion of the left adjusting substrate and the left U-shaped bayonet; a lower protrusion of the right adjusting substrate is fixedly arranged on the lower bottom surface of the right adjusting substrate in the horizontal position, a right U-shaped bayonet is arranged at the right end of the arc-shaped clamp, the lower protrusion of the right adjusting substrate is arranged in the right U-shaped bayonet, and a right U-shaped bayonet connecting bolt is arranged between the lower protrusion of the right adjusting substrate and the right U-shaped bayonet; an ear plate is arranged on the left adjusting substrate in the horizontal position; a hemispherical cover is fixedly connected to the lower bottom surface of the arc-shaped supporting plate, a through hole is arranged on the hemispherical cover for the tail end of the longitudinal position adjustment top screw, the tail end of the longitudinal position adjustment top screw passes through the through hole and is connected with the jacking block, and the jacking block is movably arranged in the hemispherical cover.

[0008] A method for adjusting a device for adjusting a butt joint between an air-cooled heat exchange tube bundle and a lower header, comprising the following steps:

[0009] The first step is to spot weld the left L-shaped connecting plate and the right L-shaped connecting plate on the bottom tube sheet of the heat exchange tube bundle installed at the lower end of the heat exchange tube bundle, the vertical plate of the left L-shaped connecting plate is fixedly connected to the left adjustment base plate at the horizontal position by the left connecting bolt, and the vertical plate of the right L-shaped connecting plate is fixedly connected to the right adjustment base plate at the horizontal position by the right connecting bolt;

[0010] Step 2: Wrap the arc clamp around the condensate collection pipe, so that the arc support plate fits with the bottom surface of the condensate collection pipe, so that the left U-shaped bayonet at the left end of the arc clamp is connected with the lower convex block of the left adjustment base plate, and the left U-shaped bayonet connection bolt is used to fix the two together, so that the right U-shaped bayonet at the right end of the arc clamp is connected with the lower convex block of the right adjustment base plate, and the right U-shaped bayonet connection bolt is used to fix the two together;

[0011] The third step is to adjust the top screw by rotating the longitudinal position. Since the jacking block connected to the tail rotates in the hemispherical cover and is always connected to the top of the arc support plate and the condensate collection pipe, the arc clamp moves upward or downward with the forward or reverse rotation of the top screw for longitudinal position adjustment. The arc clamp passes through the left lateral position adjustment base plate, the right lateral position adjustment base plate, the left L-shaped connecting plate, the right L-shaped connecting plate and the bottom end tube sheet of the heat exchange tube bundle in sequence, thereby realizing the longitudinal position adjustment of the heat exchange tube bundle on the A-type frame.

[0012] Step 4: Rotate the left lateral position adjusting screw and the right lateral position adjusting screw respectively. Since the tail end of the left lateral position adjusting screw is always connected to the fixed left plate of the collecting tube, and the tail end of the right lateral position adjusting screw is always connected to the fixed right plate of the collecting tube, the left lateral position adjusting substrate or the right lateral position adjusting substrate moves laterally. The left lateral position adjusting substrate drives the bottom tube sheet of the heat exchange tube bundle to move laterally through the left L-shaped connecting plate, and the right lateral position adjusting substrate drives the bottom tube sheet of the heat exchange tube bundle to move laterally through the right L-shaped connecting plate.

[0013] Step 5: After the bottom tube sheet of the heat exchange tube bundle and the left and right plates of the collecting tubes are adjusted in place through the adjustments in steps 3 and 4, welding is performed;

[0014] Step 6. After welding is completed, first remove the left U-shaped bayonet connecting bolts and the right U-shaped bayonet connecting bolts, remove the arc clamp from the condensate collection pipe, and then remove the left L-shaped connecting plate, the right L-shaped connecting plate, the left horizontal position adjustment base plate and the right horizontal position adjustment base plate from the bottom tube plate of the heat exchange tube bundle in turn.

[0015] The present invention saves installation time, especially has a significant effect on improving efficiency during tube bundle installation. The adjustment of the tube bundle installation can be completed in a relatively small space, which can reduce installation difficulty and construction cost, and improve the stability of engineering installation, especially has a significant effect on improving installation docking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the arc-shaped clamp 12 of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the heat exchange tube bundle on the direct air-cooled A-type frame. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings:

[0020] A device for adjusting the position of an air-cooled heat exchange tube bundle and a lower header, comprising an A-shaped frame 25, a condensate collecting tube 9 is fixedly installed at the lower end of the A-shaped frame 25, a left plate 10 and a right plate 11 of the collecting tube are fixedly arranged on the condensate collecting tube 9, a heat exchange tube bundle 1 is suspended in place above the condensate collecting tube 9, a bottom tube sheet 2 of the heat exchange tube bundle is arranged at the lower end of the heat exchange tube bundle 1, a left L-shaped connecting plate 3 and a right L-shaped connecting plate 4 are respectively connected to the bottom tube sheet 2 of the heat exchange tube bundle, a vertical plate of the left L-shaped connecting plate 3 is fixedly connected to a left horizontal position adjustment base plate 5 by a left connecting bolt 16, a vertical plate of the right L-shaped connecting plate 4 is fixedly connected to a right horizontal position adjustment base plate 6 by a right connecting bolt 17, and a horizontal position adjustment base plate 6 is arranged on the left horizontal position adjustment base plate 5 A left adjustment screw 7 is arranged, and a right adjustment screw 8 is arranged on the right adjustment substrate 6 in the horizontal position. The tail end of the left adjustment screw 7 in the horizontal position is top-connected with the left side plate 10 of the collecting tube, and the right adjustment screw 8 in the horizontal position is top-connected with the right side plate 11 of the collecting tube. An arc clamp 12 is connected between the lower bottom surface of the left adjustment substrate 5 in the horizontal position and the lower bottom surface of the right adjustment substrate 6 in the horizontal position. The arc clamp 12 surrounds the condensate collecting tube 9. A longitudinal position adjustment screw thread connection hole 13 is arranged at the lower end of the arc clamp 12. A longitudinal position adjustment screw thread 14 is screwed in the longitudinal position adjustment screw thread connection hole 13. An arc support plate 15 is connected to the tail end of the longitudinal position adjustment screw thread 14. The arc support plate 15 is top-connected with the lower bottom surface of the condensate collecting tube 9.

[0021] A left adjustment substrate lower side protrusion 20 is fixedly arranged on the lower bottom surface of the left adjustment substrate 5 in the horizontal position, a left U-shaped bayonet 22 is arranged at the left end of the arc-shaped clamp 12, the left adjustment substrate lower side protrusion 20 is arranged in the left U-shaped bayonet 22, and a left U-shaped bayonet connecting bolt 24 is arranged between the left adjustment substrate lower side protrusion 20 and the left U-shaped bayonet 22; a right adjustment substrate lower side protrusion 21 is fixedly arranged on the lower bottom surface of the right adjustment substrate 6 in the horizontal position, a right U-shaped bayonet 23 is arranged at the right end of the arc-shaped clamp 12, and the right adjustment substrate lower side protrusion 21 is fixedly arranged on the lower bottom surface of the right adjustment substrate 6 in the horizontal position. The side protrusion 21 is arranged in the right U-shaped bayonet 23, and a right U-shaped bayonet connecting bolt 19 is arranged between the lower side protrusion 21 of the right adjustment base plate and the right U-shaped bayonet 23; a hanging ear plate 18 is arranged on the left adjustment base plate 5 in the horizontal position; a hemispherical cover is fixedly connected to the lower bottom surface of the arc-shaped support plate 15, and a through hole is arranged on the hemispherical cover through which the tail of the longitudinal position adjustment top screw passes, and the tail end of the longitudinal position adjustment top screw 14 passes through the through hole and is connected to the jacking block, and the jacking block is movably arranged in the hemispherical cover.

[0022] A method for adjusting a device for adjusting a butt joint between an air-cooled heat exchange tube bundle and a lower header, comprising the following steps:

[0023] The first step is to spot weld the left L-shaped connecting plate 3 and the right L-shaped connecting plate 4 on the bottom end tube sheet 2 of the heat exchange tube bundle 1 installed at the lower end thereof, the vertical plate of the left L-shaped connecting plate 3 is fixedly connected to the left adjustment base plate 5 at the horizontal position by the left connecting bolt 16, and the vertical plate of the right L-shaped connecting plate 4 is fixedly connected to the right adjustment base plate 6 at the horizontal position by the right connecting bolt 17;

[0024] Step 2: surround the arc clamp 12 on the condensate collecting pipe 9, so that the arc support plate 15 is matched with the lower bottom surface of the condensate collecting pipe 9, so that the left U-shaped bayonet 22 at the left end of the arc clamp 12 is docked with the lower protrusion 20 of the left adjustment base plate, and the left U-shaped bayonet connecting bolt 24 is used to fix the two together, so that the right U-shaped bayonet 23 at the right end of the arc clamp 12 is docked with the lower protrusion 21 of the right adjustment base plate, and the right U-shaped bayonet connecting bolt 19 is used to fix the two together;

[0025] The third step is to rotate the longitudinal position adjustment screw 14. Since the jacking block connected to the tail rotates in the hemispherical cover and is always connected with the arc support plate 15 and the condensate collection pipe 9, the arc clamp 12 moves upward or downward with the forward or reverse rotation of the longitudinal position adjustment screw 14. The arc clamp 12 passes through the left transverse position adjustment base plate 5, the right transverse position adjustment base plate 6, the left L-shaped connecting plate 3, the right L-shaped connecting plate 4 and the bottom end tube sheet 2 of the heat exchange tube bundle in sequence, so as to realize the longitudinal position adjustment of the heat exchange tube bundle 1 on the A-shaped frame 25.

[0026] Step 4: by rotating the left lateral position adjusting screw 7 and the right lateral position adjusting screw 8 respectively, since the tail end of the left lateral position adjusting screw 7 is always connected to the fixed left side plate 10 of the collecting tube, and the tail end of the right lateral position adjusting screw 8 is always connected to the fixed right side plate 11 of the collecting tube, the left lateral position adjusting substrate 5 or the right lateral position adjusting substrate 6 moves laterally, the left lateral position adjusting substrate 5 drives the bottom end tube sheet 2 of the heat exchange tube bundle to move laterally through the left L-shaped connecting plate 3, and the right lateral position adjusting substrate 6 drives the bottom end tube sheet 2 of the heat exchange tube bundle to move laterally through the right L-shaped connecting plate 4;

[0027] Step 5: After the bottom tube sheet 2 of the heat exchange tube bundle and the left side plate 10 and the right side plate 11 of the collecting tube are adjusted in place through the adjustments in the third and fourth steps, welding is performed;

[0028] Step 6. After welding is completed, first remove the left U-shaped bayonet connecting bolt 24 and the right U-shaped bayonet connecting bolt 19, remove the arc clamp 12 from the condensate collecting pipe 9, and then remove the left L-shaped connecting plate 3, the right L-shaped connecting plate 4, the left horizontal position adjustment base plate 5 and the right horizontal position adjustment base plate 6 from the bottom end tube sheet 2 of the heat exchange tube bundle in turn.

Claims

1. A device for adjusting the position of an air-cooled heat exchange tube bundle and a lower header, comprising an A-shaped frame (25), a condensate collecting tube (9) being fixedly mounted at the lower end of the A-shaped frame (25), a collecting tube left plate (10) and a collecting tube right plate (11) being fixedly arranged on the condensate collecting tube (9), a heat exchange tube bundle (1) being suspended and positioned above the condensate collecting tube (9), and a heat exchange tube bundle bottom end tube sheet (2) being arranged at the lower end of the heat exchange tube bundle (1), It is characterized in that A left L-shaped connecting plate (3) and a right L-shaped connecting plate (4) are respectively connected to the tube sheet (2) at the bottom end of the heat exchange tube bundle. The vertical plate of the left L-shaped connecting plate (3) is fixedly connected to a left horizontal position adjustment base plate (5) via a left connecting bolt (16). The vertical plate of the right L-shaped connecting plate (4) is fixedly connected to a right horizontal position adjustment base plate (6) via a right connecting bolt (17). A left horizontal position adjustment top screw (7) is provided on the left horizontal position adjustment base plate (5). A right horizontal position adjustment top screw (8) is provided on the right horizontal position adjustment base plate (6). The tail end of the left horizontal position adjustment top screw (7) is top-connected to the left side plate (10) of the collecting tube. The right adjustment screw (8) is connected to the right side plate (11) of the collection pipe. An arc-shaped clamp (12) is connected between the lower bottom surface of the horizontal position left adjustment base plate (5) and the lower bottom surface of the horizontal position right adjustment base plate (6). The arc-shaped clamp (12) surrounds the condensate collection pipe (9). A longitudinal position adjustment screw thread connection hole (13) is provided at the lower end of the arc-shaped clamp (12). A longitudinal position adjustment screw thread (14) is screwed into the longitudinal position adjustment screw thread connection hole (13). An arc-shaped support plate (15) is connected to the tail end of the longitudinal position adjustment screw thread (14). The arc-shaped support plate (15) is connected to the lower bottom surface of the condensate collection pipe (9).

2. According to claim 1, a device for adjusting the position of the air-cooled heat exchange tube bundle and the lower header, It is characterized in that A left adjustment substrate lower side protrusion (20) is fixedly arranged on the lower bottom surface of the left adjustment substrate (5) in the horizontal position, a left U-shaped bayonet (22) is arranged at the left end of the arc-shaped clamp (12), the left adjustment substrate lower side protrusion (20) is arranged in the left U-shaped bayonet (22), and a left U-shaped bayonet connecting bolt (24) is arranged between the left adjustment substrate lower side protrusion (20) and the left U-shaped bayonet (22); a right adjustment substrate lower side protrusion (21) is fixedly arranged on the lower bottom surface of the right adjustment substrate (6) in the horizontal position, a right U-shaped bayonet (23) is arranged at the right end of the arc-shaped clamp (12), and the right adjustment substrate lower side protrusion (21) is fixedly arranged on the lower bottom surface of the right adjustment substrate (6) in the horizontal position. The lower side protrusion (21) of the whole base plate is arranged in the right U-shaped bayonet (23), and a right U-shaped bayonet connecting bolt (19) is arranged between the lower side protrusion (21) of the right adjustment base plate and the right U-shaped bayonet (23); a hanging ear plate (18) is arranged on the left adjustment base plate (5) in the horizontal position; a hemispherical cover is fixedly connected to the lower bottom surface of the arc-shaped support plate (15), and a through hole is arranged on the hemispherical cover through which the tail of the longitudinal position adjustment top screw passes, and the tail end of the longitudinal position adjustment top screw (14) passes through the through hole and is connected to the lifting block, and the lifting block is movably arranged in the hemispherical cover.

3. Using the adjustment method of the device for adjusting the air-cooling heat exchange tube bundle and the lower header as claimed in claim 2, The following steps are involved: The first step is to spot weld a left L-shaped connecting plate (3) and a right L-shaped connecting plate (4) on the bottom end tube sheet (2) of the heat exchange tube bundle arranged at the lower end of the hoisted heat exchange tube bundle (1), the vertical plate of the left L-shaped connecting plate (3) is fixedly connected to the horizontal position left adjustment base plate (5) by a left connecting bolt (16), and the vertical plate of the right L-shaped connecting plate (4) is fixedly connected to the horizontal position right adjustment base plate (6) by a right connecting bolt (17); Step 2: surround the arc-shaped clamp (12) on the condensate collecting pipe (9), so that the arc-shaped support plate (15) fits with the bottom surface of the condensate collecting pipe (9), so that the left U-shaped bayonet (22) at the left end of the arc-shaped clamp (12) is butted against the lower protrusion (20) of the left adjustment base plate, and the two are fixedly connected together with the left U-shaped bayonet connecting bolt (24), so that the right U-shaped bayonet (23) at the right end of the arc-shaped clamp (12) is butted against the lower protrusion (21) of the right adjustment base plate, and the two are fixedly connected together with the right U-shaped bayonet connecting bolt (19); The third step is to rotate the longitudinal position adjustment screw (14). Since the lifting block connected to the rear end thereof rotates in the hemispherical cover and is always connected to the arc support plate (15) and the condensate collecting pipe (9), the arc clamp (12) moves upward or downward as the longitudinal position adjustment screw (14) rotates in the forward or reverse direction. The arc clamp (12) passes through the left transverse position adjustment base plate (5), the right transverse position adjustment base plate (6), the left L-shaped connecting plate (3), the right L-shaped connecting plate (4) and the bottom end tube plate (2) of the heat exchange tube bundle in sequence, thereby realizing the longitudinal position adjustment of the heat exchange tube bundle (1) on the A-shaped frame (25); Step 4: by rotating the left transverse position adjustment screw (7) and the right transverse position adjustment screw (8), respectively, since the tail end of the left transverse position adjustment screw (7) is always connected to the fixed left side plate (10) of the collecting tube, and the tail end of the right transverse position adjustment screw (8) is always connected to the fixed right side plate (11) of the collecting tube, the left transverse position adjustment base plate (5) or the right transverse position adjustment base plate (6) is moved transversely, the left transverse position adjustment base plate (5) drives the bottom end tube plate (2) of the heat exchange tube bundle through the left L-shaped connecting plate (3) to achieve transverse position movement, and the right transverse position adjustment base plate (6) drives the bottom end tube plate (2) of the heat exchange tube bundle through the right L-shaped connecting plate (4) to achieve transverse position movement; Step 5: After the bottom tube sheet (2) of the heat exchange tube bundle and the left side sheet (10) and the right side sheet (11) of the collecting tube are adjusted in place through the adjustments in the third and fourth steps, welding is performed; Step 6. After welding is completed, first remove the left U-shaped bayonet connection bolt (24) and the right U-shaped bayonet connection bolt (19), remove the arc clamp (12) from the condensate collection pipe (9), and then remove the left L-shaped connection plate (3), the right L-shaped connection plate (4), the left horizontal position adjustment base plate (5), and the right horizontal position adjustment base plate (6) from the bottom end tube sheet (2) of the heat exchange tube bundle.

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