Repair method of hanging panel and hanging pipe alignment tool

Abstract

To provide a repair method of a hanging panel which enables easy repairing of the hanging panel, and to provide a hanging pipe alignment tool.SOLUTION: A hanging panel has a plurality of hanging pipes 14 arranged in a horizontal direction and is supported hanging from above. A repair method for repairing the hanging panel includes: an attachment step in which a hanging pipe alignment tool 2, including a plurality of sandwiching parts 3 each of which is arranged over the hanging pipes and sandwiches the hanging pipes from one side and the other side in a depth direction orthogonal to a vertical direction and an arrangement direction, is used and the sandwiching parts are attached to the upper side and the lower side of an area A to be repaired (a repaired area) of the hanging panel; and a repair step in which the hanging panel is repaired in the repaired area.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for repairing a suspension panel and a suspension pipe alignment tool for aligning suspension pipes in the horizontal direction. [Background technology]

[0002] A heat transfer tube support structure described in Patent Document 1 is known as a support structure for supporting a suspension tube. The heat transfer tube support structure includes a heat transfer panel formed by arranging a plurality of heat transfer tubes, and includes self-binding tubes formed by bending the heat transfer tubes at desired positions and configured to sandwich the other heat transfer tubes from both sides in the horizontal direction, and spacers arranged between the other heat transfer tubes and the self-binding tube. The spacers are arranged by being welded to the heat transfer tubes and the self-binding tubes, respectively.

[0003] According to the above-described heat transfer tube support structure, the heat transfer tubes can be aligned by the self-binding tubes, and the spacers prevent the self-binding tubes from coming into contact with other heat transfer tubes, thereby preventing the wall thickness of the heat transfer tubes from becoming thin at the contacting portions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-227202 Summary of the Invention [Problem to be solved by the invention]

[0005] Even with the heat transfer tube support structure described in Patent Document 1, the arrangement of the hanging tubes could become disordered if the spacers came off or the heat transfer tubes themselves became distorted. When the arrangement is disordered, for example, when performing repair work such as installing a member that connects adjacent hanging tubes or replacing a portion of the hanging tube, it is necessary to temporarily align the hanging tubes. However, in order to align the hanging tubes that have become disordered, it is necessary to temporarily fix the hanging tubes by, for example, pulling them with a wire rope, and the work of aligning the hanging tubes is time-consuming.

[0006] Therefore, an object of the present invention is to provide a method for repairing a suspension panel and a suspension pipe alignment tool that make it easy to repair a suspension panel. [Means for solving the problem]

[0007] The method for repairing a suspended panel of the present invention is a method for repairing a suspended panel that has a plurality of suspension pipes arranged horizontally and is supported by being suspended from above, and includes an attachment process of using a suspension pipe alignment tool that has a plurality of clamping parts that are arranged across the plurality of suspension pipes and are configured to clamp the plurality of suspension pipes from one side and the other side in a depth direction perpendicular to the up-down direction and the arrangement direction, and attaching the clamping parts above and below an area of ​​the suspended panel that is to be repaired, and a repair process of repairing the suspended panel in the area that is to be repaired.

[0008] According to this configuration, the clamping parts are attached above and below the area to be repaired in the attachment process, and the hanging pipes are clamped from one side and the other side in the depth direction, so the repair process can be carried out after the positions of the hanging pipes in the area to be repaired in the front-to-rear direction are aligned. Therefore, the hanging pipes can be temporarily aligned before being repaired, making it easy to repair the hanging panel.

[0009] The repair process also includes a removal process in which the hanging pipe in the area to be repaired is cut at two locations spaced apart in the vertical direction and a portion of the hanging pipe is removed, and a pipe installation process in which a new pipe is installed in the removed portion.

[0010] According to this configuration, when a new pipe is attached to the portion from which the hanging pipe was removed in the removal step, the positions of the upper end and lower end of the attachment portion in the depth direction are aligned, making it easy to attach the new pipe to the removed portion.

[0011] The repair process also includes a movement restriction process of attaching movement restriction portions to the hanging pipes that restrict relative movement in the depth direction between the hanging pipes that are adjacent to each other in the arrangement direction in the area to be repaired.

[0012] According to this configuration, relative movement of adjacent suspension pipes in the depth direction can be restricted while aligning the depth direction positions of adjacent suspension pipes in the arrangement direction. Therefore, it is easy to repair the suspension panel to a state where the depth direction positions of adjacent suspension pipes are aligned.

[0013] Furthermore, the hanging tube alignment tool of the present invention is a hanging tube alignment tool that has a plurality of hanging tubes lined up horizontally and is attached to a hanging panel that is supported by hanging from above, and is equipped with a plurality of clamping portions that are arranged across the plurality of hanging tubes and are configured to clamp the hanging tubes from one side and the other side in a depth direction perpendicular to the vertical direction and the arrangement direction, and the plurality of clamping portions are arranged spaced apart in the vertical direction on the hanging panel.

[0014] According to this configuration, the clamping portions are attached to two locations spaced apart in the vertical direction of the hanging panel, and the hanging pipes are clamped from one side and the other side in the depth direction at the two locations spaced apart in the vertical direction, so that the positions of the clamped hanging pipes in the depth direction can be aligned as a whole, making it easier to repair the hanging panel. [Effects of the Invention]

[0015] According to the present invention, it is possible to obtain a method for repairing a suspension panel and a suspension pipe alignment tool that make it easy to repair a suspension panel. [Brief explanation of the drawings]

[0016] [Figure 1]1 is a front view showing an overview of a suspension pipe alignment tool and a suspension panel repair method according to an embodiment of the present invention. FIG. [Figure 2] FIG. 10 is a side view showing an outline of the suspension pipe alignment tool and the suspension panel repair method. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG. [Figure 4] FIG. 10 is a diagram showing a removal process as a repair process in the same embodiment. [Figure 5] FIG. 10 is a diagram showing a movement restriction process as a repair method process in the same embodiment. [Figure 6] 6 is a cross-sectional view taken along the line VI-VI shown in FIG. 5. [Figure 7] FIG. 10 is a front view showing an overview of a suspension panel to which the suspension pipe alignment tool and the suspension panel repair method are applied. [Figure 8] FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0017] A method for repairing a hanging panel P and a hanging pipe alignment tool 2 according to one embodiment of the present invention will be described with reference to Figures 1 to 8. For convenience of explanation, the up-down direction and the left-right direction will be described based on the directions shown in Figure 1, and the direction penetrating the paper surface of Figure 1 will be described as the depth direction.

[0018] First, a hanging panel P to which the present invention is applied will be described with reference to Fig. 7 and Fig. 8. As shown in Fig. 7, the hanging panel P is a plate-shaped panel as a whole that includes an inlet section 11 serving as an inlet for a fluid, an outlet section 12 serving as an outlet for the fluid, a plurality of hanging pipes 14 arranged between the inlet section 11 and the outlet section 12, and folded sections 13 that connect the hanging pipes 14 to each other, and is configured to allow a fluid to flow from the inlet section 11 to the outlet section 12. The hanging panel P is, for example, a heat exchanger for performing heat exchange in a boiler, and specifically, is a preheater that preheats water to be supplied into the boiler, or a superheater that superheats saturated steam to generate superheated steam.

[0019] Specifically, the hanging panel P includes a single pipe extending continuously from the inlet portion 11 to the outlet portion 12, and the pipe is folded back multiple times midway along the axial direction to form multiple hanging pipes 14 lined up in the left-right direction and folded-back portions 13 connecting adjacent hanging pipes 14. The hanging pipes 14 of this embodiment are arranged with a gap 1s in the left-right direction. Furthermore, the hanging panel P is supported by having its inlet portion 11 and outlet portion 12 connected to other pipes. In the hanging panel P of this embodiment, the inlet portion 11 is connected to an inlet-side pipe 91 through which saturated steam flows, and the outlet portion 12 is connected to an outlet-side pipe 92 through which superheated steam flows. Both the saturated steam pipe and the superheated steam pipe extend in a direction intersecting the up-down direction (left-right direction or depth direction), and the hanging panel P is supported by being suspended from the saturated steam pipe and the superheated steam pipe.

[0020] The hanging pipes 14 are pipes that extend in the vertical direction, and their lower ends are connected to the turn-back portion 13. The upper end of the inlet-side hanging pipe 141, which is located closest to the inlet in the fluid flow direction, is connected to the inlet portion 11, the upper end of the outlet-side hanging pipe 142, which is located closest to the outlet, is connected to the outlet portion 12, and the upper end of the intermediate hanging pipe 143, which is located midway, is connected to the turn-back portion 13. The hanging pipes 14 are arranged side by side in the left-right direction. The hanging pipes 14 are pipes with a substantially uniform outer diameter, and in the aligned state J2, the positions of the multiple hanging pipes 14 in the depth direction are aligned (see FIG. 3).

[0021] Such a hanging pipe 14 is supported by the inlet-side piping 91 and the outlet-side piping 92 via the turning-back portion 13, other hanging pipes 14, the inlet portion 11, and the outlet portion 12. Here, as shown in FIG. 8 , if an intermediate portion of a pipe constituting the hanging panel P is distorted or a portion is displaced in the depth direction, a misaligned state J1 may occur in which the positions of the multiple hanging pipes 14 in the depth direction are disturbed. Specifically, if some hanging pipes 14 are displaced toward the back from the aligned state J2 and other hanging pipes 14 are displaced toward the front from the aligned state J2, the multiple hanging pipes 14 will be positioned at different positions in the depth direction. Furthermore, in the misaligned state J1, for example, if the position of the turning-back portion 13 is displaced in the depth direction, the hanging pipes 14 may extend obliquely relative to the up-and-down direction.

[0022] The above-described method for repairing a suspended panel P and the hanging pipe alignment tool 2 used in the method for repairing a suspended panel P will be described with reference to Figs. 1 to 6. First, the configuration of the hanging pipe alignment tool 2 will be described with reference to Figs. 1 and 3.

[0023] 1, the hanging pipe alignment tool 2 includes a plurality of clamping portions 3 and upper and lower connecting portions 4, and is generally frame-shaped overall. The hanging pipe alignment tool 2 of this embodiment includes two clamping portions 3, specifically, an upper clamping portion 3U and a lower clamping portion 3D that is disposed below and spaced apart from the upper clamping portion 3U. Note that the upper clamping portion 3U and the lower clamping portion 3D of this embodiment have the same configuration.

[0024] Each clamping portion 3 includes a front side portion 31 located on the front side of the hanging pipe 14, a rear side portion 32 located on the rear side of the hanging pipe 14, and a clamping connecting portion 33 that connects the front side portion 31 and the rear side portion 32 in the depth direction. In this embodiment, the front side portion 31 and the rear side portion 32 have symmetrical shapes in the depth direction.

[0025] The front side portion 31 is rod-shaped and is made of, for example, steel. The front side portion 31 is a rod-shaped body whose thickness (length in the depth direction) is shorter than its height (length in the up-down direction), and whose thickness and height are approximately constant in the left-right direction. The front side portion 31 is also a rod-shaped body that extends linearly in the left-right direction. The front side portion 31 includes an abutting portion 34 that abuts against the suspension pipe 14, and a connected portion 35 to which the clamping connection portion 33 is attached. In the front side portion 31 of this embodiment, the connected portions 35 are located at both ends in the left-right direction, and the abutting portion 34 is located between the connected portions 35.

[0026] As shown in FIGS. 1 to 3 , the abutting portion 34 has a rod shape extending in the left-right direction, and its rear surface is capable of abutting against the outer surface of the front side of the suspension pipe 14. Specifically, the rear surface of the abutting portion 34 is configured as a flat abutting surface 3a. The abutting surface 3a is a surface that extends linearly in the left-right direction and has a substantially constant height. The left-right length of the abutting portion 34 is long enough to straddle a plurality of (e.g., three or more) suspension pipes 14 in the left-right direction, and specifically, is a length that is equal to or greater than the sum of the left-right lengths of the three suspension pipes 14 and the sum of the left-right distances of the gaps 1s formed between the suspension pipes 14. The abutting portion 34 of the present embodiment is long enough to straddle six or more suspension pipes 14 in the left-right direction. Furthermore, the thickness of the abutting portion 34 is smaller than the outer diameter of the suspension pipe 14, and specifically, the thickness is equal to or greater than ⅓ and equal to or less than ½ of the outer diameter of the suspension pipe 14. Furthermore, the abutment portion 34 is configured so that the vertical length of the abutment surface 3a is longer than the outer diameter of the suspension pipe 14, and in this embodiment, the vertical length of the abutment surface 3a is more than 1 time and less than 2 times the outer diameter of the suspension pipe 14.

[0027] The connectable portion 35 has a connecting abutment surface 3b on its front surface against which the clamping connection portion 33 abuts. Specifically, the connectable portion 35 has a connecting hole formed therethrough in the thickness direction, and is configured so that a bolt 36 serving as the clamping connection portion 33 (described later) can be inserted into the connecting hole, and a head 39 of the inserted bolt 36 or a nut 37 threaded onto the bolt 36 can abut against the connecting abutment surface 3b. In this embodiment, the connectable portion 35 has a flat surface. In this embodiment, a connecting hole (not shown) is formed in only one location.

[0028] 2, the rear side portion 32 has a shape symmetrical in the depth direction to the front side portion 31. That is, the rear side portion 32 includes a connected portion 35 and an abutting portion 34, and is configured so that the abutting surface 3a is located on the front side and the connecting abutting surface 3b is located on the rear side.

[0029] 1 to 3 , the clamping connection portion 33 is detachable from the front side portion 31 and the rear side portion 32, and connects the front side portion 31 and the rear side portion 32 so that the front side portion 31 and the rear side portion 32 sandwich the suspension pipe 14 in the depth direction. The clamping connection portion 33 is configured to abut against the connection abutment surface 3b and to push the connected portion 35 in a direction in which the front side portion 31 and the rear side portion 32 approach each other. The clamping connection portion 33 of this embodiment includes a bolt 36 having a head portion 39 and a shank portion 38 with a male thread formed on the outer peripheral surface, and a nut 37 that can be threaded onto the shank portion 38 of the bolt 36, and connects the front side portion 31 and the rear side portion 32 by clamping them between the head portion 39 and the nut 37. The shank 38 of the bolt 36 can be inserted into the connecting hole, and its length is longer than the sum of the thicknesses of the front side portion 31 and the rear side portion 32 and the depth direction length (outer diameter) of the hanging pipe 14. Furthermore, the head 39 of the bolt 36 can abut against the connecting abutment surface 3b when the shank 38 is inserted into the connecting hole. In the sandwich connecting portion 33 of the present embodiment, the bolt 36 is inserted from the front side, and the head 39 is brought into abutment against the connecting abutment surface 3b of the front side portion 31, and the shank 38 is inserted into the front side portion 31 and the rear side portion 32. Then, the nut 37 is screwed onto the shank 38 from the rear side of the rear side portion 32, and the nut 37 is brought into abutment against the connecting abutment surface 3b of the rear side portion 32, whereby the front side portion 31 and the rear side portion 32 can be connected by the head 39 and the nut 37. In such a pinch connecting portion 33, the distance in the depth direction between the front side portion 31 and the rear side portion 32 can be adjusted within the range of the length of the shaft portion .

[0030] 1 and 2, the vertical connector 4 connects the upper clamping portion 3U and the lower clamping portion 3D in the vertical direction. Specifically, the vertical connector 4 includes a front connector 41 that connects the front side portion 31 of the upper clamping portion 3U to the front side portion 31 of the lower clamping portion 3D, and a rear connector 42 that connects the rear side portion 32 of the upper clamping portion 3U to the rear side portion 32 of the lower clamping portion 3D.

[0031] The front connecting portion 41 is a rod-shaped body extending in the vertical direction, and in this embodiment, a pair of front connecting portions 41 are provided spaced apart in the left-right direction. In this embodiment, the front connecting portion 41 is a steel material (flat bar) with a substantially uniform thickness. Specifically, the front connecting portion 41 is a rod-shaped body with a thickness substantially equal to or smaller than the thickness of the front side portion 31.

[0032] The front connecting portion 41 has an upper end fixed to the front side portion 31 of the upper clamping portion 3U and a lower end fixed to the front side portion 31 of the lower clamping portion 3D. In this embodiment, the front connecting portion 41 is welded to the upper clamping portion 3U and the lower clamping portion 3D and is fixed so as not to be detachable. Furthermore, the front connecting portion 41 is fixed to the upper clamping portion 3U and the lower clamping portion 3D so as to be located closer to the front side than the contact surface 3a of the front side portion 31. In this embodiment, the rear surface of the front connecting portion 41 is configured to be substantially flush with the contact surface 3a of the front side portion 31. Furthermore, the front connecting portion 41 connects the left end portions and the right end portions of the front side portions 31. In this embodiment, the front connecting portion 41 is arranged to connect the left-side connectable portions 35 of the front side portions 31 and the right-side connectable portions 35 of the front side portions 31.

[0033] The rear connecting portion 42 has a shape symmetrical in the depth direction to the front connecting portion 41. That is, the rear connecting portion 42 is a rod-shaped body whose upper end is fixed to the rear portion 32 of the upper clamping portion 3U and whose lower end is fixed to the rear portion 32 of the lower clamping portion 3D, and is configured so that the front surface of the rear connecting portion 42 is substantially flush with the abutting surface 3a of the rear portion 32.

[0034] A frame-shaped front frame portion 51 is formed by front side portions 31 arranged spaced apart vertically and front connecting portions 41 arranged spaced apart laterally, and a rear frame portion 52 is formed by rear side portions 32 arranged spaced apart vertically and rear connecting portions 42 arranged spaced apart laterally. The front frame portion 51 and the rear frame portion 52 are connected in the depth direction by a clamping connecting portion 33. In other words, the hanging tube alignment tool 2 is configured to include the frame-shaped front frame portion 51, the frame-shaped rear frame portion 52, and the clamping connecting portion 33 that connects the front frame and the rear frame portion 52 in the depth direction.

[0035] Next, a description will be given of a method for repairing the suspended panel P using the suspension pipe alignment tool 2. First, a repair method will be described in which damaged portions of the suspension pipes 14 are removed and replaced with other pipes.

[0036] The repair method for the suspended panel P includes an attachment process, a repair process, and a removal process. In the repair method for the suspended panel P, repairs are performed on a planned repair area A, which is an area where repairs are planned for the suspended panel P. In this embodiment, the planned repair area A is the portion where the damaged suspension pipe 14 is located.

[0037] As shown in FIGS. 1 to 3 , the attachment process is a configuration in which the hanging pipe alignment tool 2 is attached to the hanging panel P. Specifically, the attachment process is a process of attaching the clamps 3 above and below the area A to be repaired of the hanging panel P, with the upper clamps 3U attached above the area A to be repaired and the lower clamps 3D attached below the area to be attached. Furthermore, in the attachment process, the clamps 3 are attached so as to straddle a plurality of hanging pipes 14 including the hanging pipe 14 to be repaired. In this embodiment, the clamps 3 are attached so as to straddle the hanging pipe 14 to be repaired and the hanging pipe 14 adjacent to it in the left-right direction. Furthermore, in the attachment process of this embodiment, the clamps 3 are attached so that the hanging pipes 14 to be clamped include the inlet-side hanging pipe 141 or the outlet-side hanging pipe 142.

[0038] In the installation process, the area A to be repaired is positioned within the range surrounded by the front frame portion 51 and the rear frame portion 52, and the front frame portion 51 and the rear frame portion 52 are connected by the clamping and connecting portion 33. In this embodiment, the upper clamping portion 3U and the lower clamping portion 3D are connected while being spaced apart in the vertical direction by the vertical connecting portion 4, so that the upper clamping portion 3U and the lower clamping portion 3D can be positioned above and below the area A to be repaired. Furthermore, by connecting the front frame portion 51 and the rear frame portion 52 by the clamping and connecting portion 33, the front side portion 31 and the rear side portion 32 can clamp the multiple hanging pipes 14 from the front side and the rear side. Here, by clamping the multiple hanging pipes 14 between the front side portion 31 and the rear side portion 32, the multiple hanging pipes 14 are lined up along the front side portion 31 and the rear side portion 32, and an aligned state J2 in which their positions in the depth direction are aligned is achieved.

[0039] As described above, when the suspension pipe alignment tool 2 is attached to the suspension panel P and the suspension pipes 14 are in the aligned state J2, the attachment process is completed.

[0040] As shown in Figure 4, the repair process includes a removal process in which the hanging pipe 14 in the area A to be repaired is cut at two locations spaced apart in the vertical direction and a portion of the hanging pipe 14 is removed, and a pipe installation process in which a new pipe is installed in the removed portion.

[0041] The removal process is a process of cutting and removing the damaged hanging pipe 14. Specifically, the hanging pipe 14 is cut at two locations between the upper clamping portion 3U and the lower clamping portion 3D, and the portion between the cut locations C is removed. Here, in the removal process, the hanging pipe 14 can be cut while the hanging pipe 14 is in an aligned state J2, which prevents the cut locations C from being misaligned in the front-to-rear direction, making it easier to cut the hanging pipe 14. Furthermore, because the area A to be repaired is surrounded by the front-side frame portion 51 and the rear-side frame portion 52, it is easy to identify the area A to be repaired when cutting.

[0042] The pipe attachment process is a process of attaching another pipe to the part removed in the removal process. Specifically, in the pipe attachment process, another pipe is placed over the part removed in the removal process, and the upper and lower ends of the other pipe are welded and fixed to the cut point C. Here, since the hanging pipe 14 can be welded while the hanging pipe 14 is in an aligned state J2, the other pipe can be welded while extending in the vertical direction. This makes it easier to properly weld the other pipe. The repair process is completed with the above steps.

[0043] The removal process is a process of removing the attached hanging pipe alignment tool 2. The removal process is performed before using the hanging pipes 14. Specifically, in the removal process, the clamping connecting portion 33 is removed to release the connection between the front side portion 31 and the rear side portion 32, and the hanging pipe alignment tool 2 attached to the hanging panel P is removed. Because this process removes the hanging pipe alignment tool 2 attached to the hanging panel P, it is possible to suppress the occurrence of adverse effects, such as a decrease in heat exchange efficiency, when using the hanging panel P.

[0044] Through the above steps, the repair work of removing the damaged portion of the suspension pipe 14 and replacing it with another pipe is completed.

[0045] Next, a method for attaching the movement restricting part 6 to the hanging pipe 14 in the area A to be repaired as part of repair work will be described with reference to Figures 5 and 6. This repair method for the hanging panel P differs from the above-described repair method in the repair process, but the attachment process and removal process are the same. The area A to be repaired in this embodiment is the part where the movement restricting part 6 should be attached.

[0046] The repair process includes a movement restricting process of attaching the movement restricting part 6 to the hanging pipe 14. As shown in FIG. 6 , the movement restricting part 6 is made of metal and is generally L-shaped in plan view. Specifically, the movement restricting part 6 has a base end attached to the hanging pipe 14, and is equipped with a horizontal extension part 61 that extends outside the hanging pipe 14 in the left-right direction, and a vertical extension part 62 that extends from the tip of the horizontal extension part 61 to one side in the depth direction. The left-right length of the movement restricting part 6 is shorter than the left-right distance between adjacent hanging pipes 14. Furthermore, the depth length of the movement restricting part 6 is shorter than the outer diameter (depth length) of the hanging pipe 14.

[0047] In the movement restriction process, movement restriction units 6 are attached to the hanging pipes 14 within the area A to be repaired. Specifically, in the movement restriction process, the movement restriction units 6 are attached to the hanging pipes 14 so that the movement restriction units 6 are positioned between adjacent hanging pipes 14. Specifically, the base ends of the horizontal extension portions 61 of the movement restriction units 6 are attached to the left and right sides of the hanging pipes 14. Furthermore, the movement restriction unit 6 attached to the left side of the hanging pipe 14 has the horizontal extension portion 61 positioned further back than the vertical extension portion 62, and the movement restriction unit 6 attached to the right side of the hanging pipe 14 has the horizontal extension portion 61 positioned further forward than the vertical extension portion 62. In other words, the movement restriction unit 6 attached to the left side and the movement restriction unit 6 attached to the right side are symmetrical in the left-right direction and in the depth direction. In the movement restriction process of the present embodiment, the movement restriction units 6 are fixed to the hanging pipe 14 by welding.

[0048] The movement restricting process is completed through the above steps. When the movement restricting part 6 is attached, the movement restricting part 6 engages with the adjacent hanging tube 14 or the movement restricting part 6 attached to the adjacent hanging tube 14, thereby restricting the movement of the hanging tube 14 in the left-right and depth directions.

[0049] According to the hanging pipe alignment tool 2 configured as described above, the clamping portions 3 clamp the hanging pipes 14 from one side and the other side in the depth direction at two locations spaced apart from each other above and below, so that the positions of the multiple hanging pipes 14 clamped by the clamping portions 3 can be aligned overall in the depth direction. This makes it easier to repair the hanging panel P.

[0050] Furthermore, since the upper clamping portion 3U and the lower clamping portion 3D are connected by the vertical connecting portion 4, the upper clamping portion 3U and the lower clamping portion 3D can be easily attached to the hanging panel P while maintaining an appropriate vertical distance.

[0051] Furthermore, the clamping portion 3 has a flat contact surface 3a, and the flat contact surface 3a contacts the suspension pipe 14, so that the suspension pipe 14 can be easily aligned in the left-right direction.

[0052] In addition, the frame is provided with a front frame portion 51 and a rear frame portion 52, and the front frame portion 51 and the rear frame portion 52 are connected in the depth direction by the clamping connection portion 33, so that the frame can be attached to the hanging panel P so that the area A to be repaired is placed inside the frame. Therefore, it is easy to position the frame relative to the hanging panel P.

[0053] Furthermore, according to the above-described method for repairing the hanging pipe 14, the clamping units 3 are attached above and below the area A to be repaired in the attachment process, and the clamping units 3 clamp the hanging pipe 14 from one side and the other side in the depth direction, so the repair process can be carried out after the positions of the hanging pipes 14 in the area A to be repaired in the front-to-rear direction are aligned. Therefore, the hanging pipes 14 can be temporarily aligned before being repaired, making it easy to repair the hanging panel P.

[0054] The above describes an embodiment of the present invention using an example, but the present invention is not limited to the above embodiment, and various modifications can be made within the scope that does not deviate from the gist of the present invention.

[0055] For example, the case where the front side portion 31 and the rear side portion 32 are connected by the bolt 36 and nut 37 as the clamping connecting portion 33 has been described, but the present invention is not limited to this configuration. For example, the clamping connecting portion 33 may be a clamp, and the front side portion 31 and the rear side portion 32 may be clamped and connected from the outside.

[0056] Furthermore, although the upper and lower connecting portions 4 have been described as having a front connecting portion 41 and a rear connecting portion 42, this configuration is not limited to this, and the upper and lower connecting portions 4 may also be configured to have only one of the front connecting portion 41 and the rear connecting portion 42.

[0057] Furthermore, although the case where the clamping portion 3 and the upper and lower connecting portions 4 are fixed to each other by welding has been described, the present invention is not limited to this configuration, and the upper and lower connecting portions 4 may be configured to be detachable from the clamping portion 3.

[0058] Furthermore, as examples of repair processes, the work of replacing a portion of the hanging pipe 14 and the work of attaching another component to the hanging pipe 14 have been described, but the present invention is not limited to these cases, and various other work can be performed to repair the hanging panel P.

[0059] Furthermore, although the case where the contact surface 3a is a flat surface has been described, the present invention is not limited to this configuration, and for example, the contact surface 3a may be a surface formed with a recess into which the suspension pipe 14 fits.

[0060] Furthermore, although the case where the front side portion 31 and the rear side portion 32 are symmetrical in the depth direction has been described as an example, the present invention is not limited to this configuration, and an asymmetrical configuration is also possible.

[0061] Furthermore, the length of the upper and lower connecting parts 4 can be changed. For example, the upper and lower connecting parts 4 can be configured to be extendable and contractible in the vertical direction. With this configuration, the distance between the upper clamping part 3U and the lower clamping part 3D can be changed depending on the width of the area A to be repaired.

[0062] The abutting portion 34 may also be configured to have a variable length in the left-right direction. For example, the abutting portion 34 may be configured to be expandable and contractible in the left-right direction. With this configuration, the length of the abutting portion 34 can be changed depending on the width of the area A to be repaired. [Explanation of symbols]

[0063] 1s...gap, 11...inlet part, 12...outlet part, 13...turning part, 14...hanging pipe, 141...inlet side hanging pipe, 142...outlet side hanging pipe, 143...midway hanging pipe, 2...for hanging pipe alignment Tool, 3...Clip part, 3D...Lower clamp part, 3U...Upper clamp part, 3a...Abutment surface, 3b...Connection contact surface, 4...Upper and lower connection part, 6...Movement restriction part, 31...Front side part, 32...Back side part, 33...Pinch connection part , 34...Abutment portion, 35...Connected portion, 36...Bolt, 37...Nut, 38...Shaft portion, 39...Head portion, 41...Front connecting portion, 42...Rear connecting portion, 51...Front frame portion, 52...Rear frame portion, 61...Horizontal extension portion, 62...Vertical extension portion, 91...Inlet side piping, 92...Outlet side piping, A...Area to be repaired, C...Cutting point, J1...Misaligned state, J2...Aligned state, P...Hanging panel

Claims

1. A method for repairing a suspension panel for repairing a suspension panel that has a plurality of suspension pipes arranged horizontally and is supported by being suspended from above, comprising: a hanging pipe alignment tool including a plurality of clamping portions that are arranged across the plurality of hanging pipes and configured to clamp the plurality of hanging pipes from one side and the other side in a depth direction perpendicular to the up-down direction and the arrangement direction, an attachment process of attaching the clamping portions above and below the area to be repaired of the hanging panel; A repair process for repairing the suspended panel in the area to be repaired.

2. The repair process includes: a removing process of cutting the suspension pipe in the area to be repaired at two locations spaced apart in the vertical direction and removing a portion of the suspension pipe; The method for repairing a suspended panel according to claim 1, further comprising a pipe installation step of installing a new pipe in the removed portion.

3. 2. The method for repairing a suspended panel according to claim 1, wherein the repair process includes a movement restriction process of attaching a movement restriction portion to the suspension pipes that restricts relative movement in the depth direction between the suspension pipes that are adjacent to each other in the arrangement direction in the area to be repaired.

4. A suspension pipe alignment tool that has a plurality of suspension pipes arranged horizontally and is attached to a suspension panel that is suspended and supported from above, a plurality of clamping portions that are arranged across the plurality of suspension pipes and are configured to clamp the suspension pipes from one side and the other side in a depth direction that is perpendicular to the up-down direction and the arrangement direction, The plurality of clamping portions are arranged on the suspension panel at intervals in the vertical direction.

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