JP2002115804A - Assembling, conveying, and installing fixture for heat exchanger, and assembling, conveying, and installing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembling, conveying, and installing fixture for a heat exchanger and an assembling, conveying, and installing method for a heat exchanger which are useable widely and repeatedly for each plant. SOLUTION: A main beam 4 is provided vertically at 4 corners of a side surface frame 3 installed on a side surface of a heat exchanger 2 and of a side surface frames 3 for supporting the foregoing side surface frame 3 in the direction of the width of a furnace, and further an upper support beam 5, a vertical connection beam 6, a lower press beam 7, and a vertical breath 8 for reinforcing the construction of these beams (an elongated hole 3a is formed in the side surface frame 3, into which elongated hole 3a the upper support beam 5 and the lower press beam 7 are fixed with use of nuts 21 and bolts 22, whereby the invention deals with alteration of a disposition position of a hung tube 9 connected to the upper support beam 5 and the lower press beam 7) are mounted by tightening with bolts to the side surface frame 3 to obtain a three-surface structure with its upper surface side being opened to the side surface frame 3 with bolts. From the opening portion of the three surface structure there are successively piled the heat exchanger 2 and a rafter 10 and the suspension-pipe are imposed in order, and the side frame is mounted from an upper portion, clamped with bolts. The heat exchanger that has been assembled into a conveyance state is placed on a field conveyance frame and is brought into an installation state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial and industrial boiler, and more particularly to a jig for assembling, transporting, and installing a heat exchanger suitable for assembling, transporting, and installing a heat exchanger. Related to assembling, transporting, and installing methods.

[0002]

2. Description of the Related Art FIGS. 13 and 14 show specific examples of a conventional jig for both transfer and installation of a heat exchanger. The jig is
Assemble the heat exchanger into blocks at the factory or on site and install it in the plant.

FIG. 13 shows only a heat exchanger (the heat exchanger is sometimes simply referred to as a coil) in an installed state according to the prior art. This figure shows a temporary cartridge frame 15 which is a jig for manufacturing a block-based installation structure of the prior art, and an upper horizontal coil 1 blocked by the temporary cartridge frame 15.
6, a middle horizontal coil 17, a lower horizontal coil 18, a hanging pipe 9 for hanging these horizontal coils 16 to 18, a frame 30 for supporting the hanging pipe 9, and a heat exchanger for lifting the heat exchanger through the frame 30. Rod 31, jack 20 and ceiling steel frame 1 provided with jack 20
9.

[0004] The hanging tube 9 is provided with each horizontal coil 1.
The horizontal coils 16 to 18 can be hung by supporting the hanging tube 9.
At the end of the installation, each suspended pipe 9 is formed into a plurality of vertically continuous pipe groups by welding.

A procedure for reaching the installation state shown in FIG. 13 will be described with reference to FIG. FIG. 14 shows the upper horizontal coil 1
6, the situation where the middle horizontal coil 17 and the lower horizontal coil 18 are set is shown.

First step: The upper horizontal coil 16 is carried into the lower part of the flue, the suspension pipe 9 of the upper horizontal coil 16 is supported on the frame 30 via the temporary cartridge frame 15, and then the rod attached to the frame 30 is mounted. It is suspended from the ceiling steel frame 19 (FIG. 13) by the jack 20 (FIG. 13) via 31. Second step: The temporary cartridge frame 15 is disassembled and removed. Third step: The jack 20 is driven and the upper horizontal coil 16 is lifted up to a height at which the upper horizontal coil 16 can be connected to the middle horizontal coil 17. Fourth step: The middle horizontal coil 17 is carried into the lower part of the flue. Fifth step: After welding the lower part of the suspension pipe 9 of the upper horizontal coil 16 and the upper part of the suspension pipe 9 of the middle horizontal coil 17 using the temporary cartridge frame 15, the temporary cartridge frame 15 is disassembled and removed. Sixth step: The jack 20 is driven, and the middle horizontal coil 17 is lifted up to a height at which it can be connected to the lower horizontal coil 18. Seventh step: The lower horizontal coil 18 is carried into the lower part of the flue. Eighth step: After welding the lower part of the suspension pipe 9 of the middle horizontal coil 17 and the upper part of the suspension pipe 9 of the lower horizontal coil 18 using the temporary cartridge frame 15, the temporary cartridge frame 15 is disassembled and removed. Ninth step: The jack 20 is driven to lift the lower horizontal coil 18 to the installation position. By performing the first to ninth steps, the installation of the heat exchanger is completed.

[0007]

The conventional jig for transferring and installing the heat exchanger according to the prior art is designed exclusively for each plant because the design conditions are different for each plant, and the versatility for other plants is taken into consideration. In addition, since each plant is designed with its own dimensions, it cannot be reused because it has a welded structure, and after use in that plant, there is a waste of scrap.

An object of the present invention is to assemble, transport and use a heat exchanger which can be used universally in each plant and can be used repeatedly.
An object of the present invention is to provide an assembling jig and a method of assembling, transporting and installing a heat exchanger using the jig.

[0009]

The above object can be achieved by adopting the following basic policy. The dimension of the coil of the block frame of the jig for assembly, transportation and installation according to the present invention in the tube axis direction is constant. The position of the suspended pipe support is movable in the pipe axis direction. Accordingly, it is possible to cope with any position of the suspension tube set in the coil in each plant.

The dimension perpendicular to the tube axis of the coil of the block frame, that is, the dimension in the furnace width direction, is determined in consideration of the interval between the heat transfer tubes of the heat transfer tube group in each plant, ie, the pitch, and the number of tubes in the furnace width direction, ie, the number of rows. Then, it is determined with versatility. For example, the size of the block frame in the furnace width direction is 114.3 m.
When m pitch and 16 rows are set as standard, 196 rows of A plant are combined with 11 rows (176 rows) for 16 rows and 2 rows of 20 rows (20 rows), and 256 rows of B plant are 1 row.
16 for 6 rows, 248 rows for C plant, 14 for 16 rows,
The length is determined to be about 1830 mm so that any number of rows such as two for 12 rows can be handled. Since the block frames for 10 rows and 12 rows are few, they may be manufactured for individual plants,
A standard block frame can be used by using a wood or the like as a filler in the gap formed in the width direction.

Further, the dimension of the coil of the block frame in the height direction is limited so that the suspension pipe projects above the block frame. Thereby, welding of the pipe at the time of installation can be performed with the block frame attached.

The pillars, beams, and braces on the side surfaces, which constitute the configuration of the coil of the block frame in the height direction, and the beams, braces on the bottom surface of the block frame are integrally welded to the frame structure, and the constituent surfaces are joined together. Shall be bolted. As a result, the block frame can be repeatedly used.

The jig for assembling, transporting, and installing the heat exchanger of the present invention having the above-described block frame has the following configuration. That is, a heat exchanger composed of a group of heat transfer tubes installed in a flue, which is a discharge passage of combustion gas such as a boiler, wherein a heat exchanger such as a economizer or a reheater is disposed in a horizontal direction in the flue. The heat transfer tube group constituting each heat exchanger that is installed in the stack and vertically stacked with the flue is formed into a block unit structure, and is attached at the time of transport and installation of the block unit structure. In the jig for assembling, transporting and installing the heat exchanger used in the present invention, the lower surface and the upper surface corresponding to the height direction of the heat exchanger of the transportation and installation jig, and the left side surface and the right side surface are flat frames. Along with the structure,
The lower surface, the upper surface, the left side surface and the right side surface are formed into a box-shaped structure by the four sided frame structure, and further, the left side surface and the right side surface of the flat frame structure are elongated holes or a plurality of holes. A hole is provided, and a supporting material for supporting the hanging pipe of the structure in block units is inserted into the hole and fixed, so that the supporting material of the hanging pipe depends on the dimensions of the left side surface and the right side surface. A jig for assembling, transporting, and installing a heat exchanger that can be set at any position.

Further, the jig for assembling, transporting and installing the heat exchanger according to the present invention is characterized in that the flat frame structure comprising the lower surface, upper surface, left side surface and right side surface is a foldable structure. This makes transportation easier.

The present invention also relates to a heat exchanger comprising a group of heat transfer tubes installed in a flue, which is a discharge passage of a combustion gas such as a boiler, such as a heat exchanger or a reheater. The heat transfer tube group constituting each heat exchanger that is installed horizontally in the flue and stacked vertically in the flue is a block unit structure, and the one or more block structures In the method of assembling, transporting, and installing the heat exchanger, the main beams 4 are provided at four corners of the side frame 3 installed on the side of the structure of each block unit and the side frame 3 supporting the side frame 3 in the furnace width direction. At least an upper support selected from a block frame including an upper support beam 5, an upper and lower connecting beam 6, a lower presser beam 7, and an upper and lower brace 8 for reinforcing the beam structure, which are integrally formed by welding, and further integrated. Attach the beam 5 to the side frame 3 by bolting, and open the top side Then, the heat exchanger 2 of the block structure, the rafter corresponding to each heat exchanger 2 and the hanging pipe 9 are sequentially stacked from the open part of the trihedron, and the block structure corresponding to the predetermined number is formed. The bodies are stacked, and then the side frames 3 are attached from above, and the opposite side frames 3, the main beam 4, and at least the upper support beams 5 (the upper and lower connecting beams 6, the lower holding beams 7, and the upper and lower braces 8 are simultaneously attached. The block structure of the heat exchanger 2 which has been assembled and transported is bolted to the block frame 1 made of
2 and then mounted on an erecting tool, and the erecting tool is turned upright by rotating it by 90 degrees to be installed in the boiler, and then placed at the installation position, and one or more block structures The heat exchanger 2 is lifted upward by the jack 20, and the hanging pipe 9 'of the already set heat exchanger 2' above and the heat exchanger 2 comprising one or more block structures carried in are suspended. Weld the pipes, then disassemble the block frame 1 and remove the jacks.
Transportation and installation methods are also included.

At this time, at least a side surface of the block frame 1 composed of the side frame 3, the main beam 4, the upper support beam 5, the upper and lower connecting beams 6, the lower holding beam 7, and the upper and lower braces 8 for reinforcing these beam structures. By providing a long hole 3a in the frame 3 and fixing the upper support beam 5 and the lower holding beam 7 to the long hole 3a with a nut 21 and a bolt 22, a suspension connected to the upper supporting beam 5 and the lower holding beam 7 is provided. It is possible to cope with a change in the arrangement position of the pipe 9.

[0017]

The block frame of the jig for assembling, transporting and installing according to the present invention takes the dimensions in the furnace width direction into consideration in consideration of the interval between heat transfer tubes of the heat exchanger of each plant, that is, the pitch and the number of tubes in the furnace width direction, that is, the number of rows. In addition, the heat exchanger of each plant can be housed in order to determine the versatility.

Further, when the block frame of the jig for assembling, transporting and installing the heat exchanger is formed into a welded structure, a slight dimensional difference occurs every time cutting and re-welding, so that it cannot be reused. In the assembly, transportation and installation jig block frames, the flat structure of the ceiling surface on the side and bottom surfaces is a welded structure, but the connection between the constituent surfaces is mainly repeated by using a bolt structure can do.

[0019]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a coil 2 in an assembled state using a block frame 1 of an assembly, transportation and installation jig according to an embodiment of the present invention. The coil 2 is manufactured for each panel, and a plurality of panels are stacked one by one with the surface parallel to the height direction as the upper and lower surfaces, that is, the bottom surface or the ceiling surface at the time of installation. . In addition, during transportation, it is unstable in the orientation at the time of installation, and in order to prevent deformation due to weight, as shown in FIG. Be transported.

The block frame 1 reinforces a main beam 4 and an upper supporting beam 5, an upper and lower connecting beams 6, a lower holding beam 7, and a beam structure supported by a side frame 3 that stands up parallel to the furnace width direction of the coil 2. The upper and lower braces 8 are formed. If there is no trouble in transportation, the upper support beam 5, the upper and lower connecting beams 6, the lower holding beams 7, and the upper and lower braces 8 may be unnecessary even if they are unnecessary.

The assembly sequence of the block frame 1 in FIG. 1 will be described with reference to FIGS. 2 to 5, and the installation procedure will be described with reference to FIGS. FIG. 2 shows a situation in which three surfaces of the block frame 1 are assembled. First, as shown in FIG.
Attach the main beam 4 to each corner by bolting. Next, as shown in FIG. 2B, the upper and lower connecting beams 6, the lower holding beams 7, and the upper and lower braces 8, which are integrally formed by a welding structure, are attached to the side frames 3 by bolts. Further, FIG.
As shown in the figure, the upper support beam 5 also includes the upper and lower connecting beams 6 and the upper and lower braces 8.
And are attached to the side frames 3 by bolting. Thus, the trihedron of the block frame 1 shown in FIG.

Next, as shown in FIGS. 3 (a) and 3 (b), the open portion above the trihedron shown in FIG.
The coil 2 for each sheet, the rafter 10 corresponding to each coil 2, and the hanging pipe 9 are sequentially stacked in this order. When the predetermined number of coils 2 are stacked, the side frame 3 is attached from above and bolted as shown in FIG. FIG. 5 shows the coil 2 which can be lifted and transported by the assembled chain 23 in this manner.

FIGS. 6 and 7 show a plurality of suspension pipes 9.
1 shows a structure of a block frame 1 that can correspond to the arrangement position of. FIG. 6 is a plan view of a flat body in which the upper support beam 5, the upper and lower connecting beams 6 and the upper and lower braces 8 are integrated by welding, or a flat body in which the lower holding beam 7, the upper and lower connecting beams 6 and the upper and lower braces 8 are integrated by welding, FIG. 7 is a view taken along line AA of FIG.

An elongated hole 3a is provided in the side frame 3, and the elongated hole 3a
By fixing the hanging tube 9 to the upper supporting beam 5 and the lower holding beam 7 with the nut 21 and the bolt 22, the arrangement position of the hanging tube 9 can be changed.

Next, the installation procedure of the coil 2 transported by the block frame 1 will be described with reference to FIGS. As shown in FIG. 8A, the coil 2 in a state where it is assembled to the block frame 1 on the site is placed on a local transporting gantry 12, mounted on an upright 11, and further, as shown in FIG. 8B. The upright 11 is rotated by 90 degrees to stand upright, thereby forming the coil 2 installed in the boiler. Next, as shown in FIG. 9, it is mounted on a trolley 13 and carried in from the lateral direction of the can.
Next, the can is moved in the front-rear direction to set the installation position. At this time, the existing coil 2 'shown in FIG. 9B is moved from the steel frame of the boiler building to the back in the front-back direction of the can using a chain block or the like. The block frame 1 incorporating the loaded coil 2 should not interfere with the existing coil 2 '.
The coil 2 assembled on the block frame 1 placed on the carriage 13 shown in FIG. 9A is moved backward of the can.

Next, as shown in FIG. 10, the coil 2 in a state of being assembled on the block frame 1 is lifted upward by the jack 14, and the hanging pipe 9 for the coil (not shown) already set above is lifted. Is welded to the suspended pipe 9 of the coil 2 carried in. Next, as shown in FIG. 11, the block frame 1 is disassembled, and the jack 14 is removed. This completes the joining of the new coil.

FIG. 12 shows a state in which the two disassembled and disassembled block frames 1 are bundled, and shows that they can be easily transported by truck.

[0028]

According to the present invention, the dimensions of the block frame in the furnace width direction are determined in consideration of the pitch and the number of rows of each plant, thereby assembling, transporting, and installing coils of different plants having different dimensions. Therefore, it is necessary to design and manufacture a gantry for each plant.

[Brief description of the drawings]

FIG. 1 shows a state where coils are assembled using a block frame according to an embodiment of the present invention.

FIG. 2 shows a state where three surfaces of the block frame of FIG. 1 are assembled.

FIG. 3 shows a state in which a coil and a hanging tube are assembled.

FIG. 4 shows a state where the operation of FIG. 3 is completed and the side frame is attached.

FIG. 5 shows a state in which the work of FIG. 4 has been completed and assembled.

FIG. 6 is a structural diagram showing that the block frame according to the embodiment of the present invention can correspond to a plurality of hanging pipe positions.

FIG. 7 is a view taken along the line AA of FIG. 6;

FIG. 8 shows a state in which a coil assembled using the block frame of FIG. 5 is brought to the site and stands up.

9 shows a state in which a coil assembled using the block frame of FIG. 8 is being carried into a boiler can.

FIG. 10 shows a state where the assembled coil is jacked up using the block frame of FIG. 9;

11 shows a state in which the block frame is disassembled from the coil assembled using the block frame in FIG. 10 and jack-down is performed.

FIG. 12 is a view illustrating a packing state of the block frame according to the embodiment of the present invention at the time of transfer after use, and indicates that the dimensions fall within dimensions mountable on a truck.

FIG. 13 is a conceptual diagram showing a state where the coil base is installed using a conventional coil base.

FIG. 14 shows a conventional coil installation procedure diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Block frame 2 Heat exchanger (coil) 3 Side frame 4 Main beam 5 Upper support beam 6 Vertical connection beam 7 Lower holding beam 8 Vertical brace 9 Suspension pipe 10 Rafter 11 Standing tool 12 Local transportation stand 13 Dolly 14 Jack 15 Temporary Cartridge Frame 16 Upper Horizontal Coil 17 Middle Horizontal Coil 18 Lower Horizontal Coil 19 Ceiling Steel Frame 20 Jack 21 Nut 22 Bolt 23 Chain 30 Frame 31 Rod

Claims (4)

[Claims] 1. A heat exchanger comprising a group of heat transfer tubes installed in a flue, which is a combustion gas discharge passage of a boiler or the like, wherein a heat exchanger such as a economizer or a reheater is provided in the flue. The heat transfer tube group constituting each heat exchanger which is installed horizontally in the stack and stacked vertically in the flue is made into a block unit structure, and then the block unit structure is transported and installed. A jig for assembling, transporting and installing a heat exchanger that is sometimes attached and used, wherein the lower surface and the upper surface corresponding to the height direction of the heat exchanger of the transfer and installation jig, and the left side surface and the right side surface are flat. And a box-shaped structure formed by the four-sided frame structure of the lower surface, the upper surface, the left side surface, and the right side surface, and the flat surface structure of the left side surface and the right side surface. Provide a long hole or multiple holes in the frame By inserting and fixing the supporting material for supporting the hanging pipe of the structural unit of the hanging unit into the hole, the supporting material of the hanging pipe can be moved to an arbitrary position according to the dimensions of the left side surface and the right side surface. A jig for assembling, transporting, and installing a horizontal heat exchanger characterized in that it can be set. 2. The heat exchanger assembly according to claim 1, wherein the planar frame structure forming the lower surface, the upper surface, the left side surface, and the right side surface is a foldable structure.
Jig for transportation and installation. 3. A heat exchanger comprising a group of heat transfer tubes installed in a flue, which is a discharge passage of combustion gas such as a boiler, wherein a heat exchanger such as a economizer or a reheater is provided in the flue. The heat transfer tube group constituting each heat exchanger which is installed horizontally in the stack and stacked vertically in the flue is made into a block unit structure, and the heat formed by the one or more block structures When assembling, transporting, and installing the exchanger, the main beams are set up at the four corners of the side frame installed on the side of the structure of each block unit and the side frame supporting the side frame in the furnace width direction. At least the upper support beam selected from the block frame consisting of the upper support beam, the upper and lower connecting beams, the lower holding beam, and the upper and lower braces that reinforces the beam configuration is bolted to the side frame and attached. Obtain a trihedron whose upper side is open, From the open part of the body, heat exchangers of each block structure, rafters and hanging pipes corresponding to each heat exchanger are sequentially stacked, stacking the expected number of block structures, and then attaching side frames from above Then, the opposite side frames on both sides, the block frame composed of the main beam and at least the upper support beam are bolted, and the block structure which has been assembled and transported is placed on a local transport gantry, and further mounted on an upright. By turning the erecting tool upright by rotating it 90 degrees, it is installed in the boiler, then placed at the installation position, and the heat exchanger consisting of one or more block structures is jacked up and lifted up. Welding and joining the previously set up heat exchanger suspension pipe and the heat exchanger suspension pipe consisting of one or more block structures carried in, then disassemble the block frame and remove the jack Assembling, transporting, and installing a heat exchanger. 4. A long hole is provided in at least a side frame among structural members of a block frame including a side frame, a main beam, an upper support beam, an upper and lower connecting beam, a lower holding beam, and an upper and lower brace. 4. A block frame capable of coping with a change in an arrangement position of a suspension pipe connected to the upper support beam and the lower support beam by fixing the support beam and the lower support beam with a nut and a bolt. Assembly, transport,
Installation method.