JP2012007839A - Heat exchanger - Google Patents

Abstract

An object of the present invention is to improve the workability of manufacturing or installing a large-sized heat exchanger 1 that particularly requires on-site assembly, shortening the construction period and reducing costs.
A heat exchanger (1) includes a plurality of heat exchanger modules (2) arranged in parallel in a predetermined direction, and first and second heat exchanger modules (2) extending in a predetermined direction and connected to each other so that fluid can flow therethrough. Second ducts 3 and 4 are provided. At least one of the first and second ducts 3 and 4 is configured by connecting divided ducts 33 and 43 divided into a plurality in a predetermined direction through fastening means 332 and 432.
[Selection] Figure 1

Description

  The technique disclosed here relates to a large-sized heat exchanger that includes a plurality of heat exchanger modules and requires on-site assembly at an installation site.

  In a case where the required heat exchange capacity is large and the heat exchanger main body becomes enormous when trying to satisfy it with one heat exchanger, for example, as described in Patent Document 1 It is known to divide a heat exchanger body into a plurality of heat exchanger modules. The heat exchanger described in this document includes a plurality of heat exchanger modules stacked in the vertical direction, and an air supply duct extending in the vertical direction on each of both sides sandwiching the heat exchanger modules. And a plurality of connecting pipes communicate with each heat exchanger module and each duct.

JP 2007-178092 A

  By the way, the large heat exchanger as described above, for example, may be too large to be transported even if it is transported to the installation location after completing the whole in the factory. In that case, the entire heat exchanger is completed in the factory. Later, it is disassembled and transported to the installation location of the heat exchanger, reassembled at the installation location to complete the heat exchanger, or heat exchange of parts manufactured to a size that can be transported in the factory It is transported to the installation location of the vessel, and the heat exchanger is completed by assembling the components at the installation location. However, such on-site assembly requires work such as welding and processing, which has the disadvantage of requiring a work period and cost. Here, the large-capacity heat exchanger described in Patent Document 1 described above can be of a size that requires local assembly, but Patent Document 1 does not describe anything about assembling the heat exchanger locally. No consideration is given to how such on-site assembly is performed.

  The technology disclosed herein has been made in view of the above points, and the purpose of the technology is to improve the workability of manufacturing or installing a large heat exchanger that particularly requires on-site assembly. The purpose is to shorten the construction period and reduce costs.

  In the heat exchanger configured to include the heat exchanger main body and the duct, the inventors of the present application not only divide the heat exchanger main body into a plurality of heat exchanger modules but also configure a plurality of ducts. In addition to being configured in a divided manner, a connection configuration through fastening means that can be easily performed even in local assembly is adopted as the connection configuration of the divided duct.

  Specifically, the heat exchanger disclosed herein includes a plurality of heat exchanger modules each including a core and arranged in parallel in a predetermined direction, and each of the heat exchanger modules extends in the predetermined direction. First and second ducts connected to each other so as to allow fluid to flow to the core, and at least one of the first and second ducts includes a plurality of divided ducts divided in the predetermined direction through fastening means. It is configured by connecting.

  Here, the “fastening means” is means that can connect the divided ducts without requiring special equipment, for example, when performing welding in on-site assembly. It may be a means that can split the connected divided ducts again if necessary. Specifically, it can include fastening using bolts and bolts and nuts, and fastening using clamps and clips.

  Since the heat exchanger having this configuration includes a plurality of heat exchanger modules, even if each of the heat exchanger modules is small, a large heat exchange capacity can be satisfied. This is advantageous not only in facilitating manufacturing in the factory, but also in that the manufactured heat exchanger module can be easily transported to the installation location of the heat exchanger.

  In addition, the first and / or second ducts arranged along a predetermined direction, in other words, the direction of the row in which a plurality of heat exchanger modules are arranged in parallel are difficult to carry because the overall length thereof is too long. Or, although it may be impossible, in the above configuration, since at least one of the first and second ducts is configured by connecting a plurality of divided ducts, the size of the divided ducts can be conveyed. By setting the size, it is possible to ensure the necessary length as the length of the duct while facilitating the transportation of the divided duct. That is, the duct length corresponding to the number of heat exchanger modules determined according to the required heat exchange capacity can be secured. Then, since the connection between the divided ducts is a connection through a fastening means, it does not require any special equipment and can be easily assembled on site, shortening the construction period and reducing costs. Can be very advantageous.

  Moreover, the said division | segmentation structure determines the number of heat exchanger modules according to the required heat exchange capacity | capacitance, and makes it possible to determine the number of division | segmentation ducts according to the determined number of modules. That is, the required heat exchange capacity can be dealt with by increasing or decreasing the number of heat exchanger modules and division ducts, and there is an advantage that the design of the heat exchanger can be facilitated.

  The predetermined direction is a horizontal direction, the first duct is disposed on the lower side with the rows of the heat exchanger modules in between, and the second duct is disposed on the upper side with the rows of the heat exchanger modules in between. The first duct is configured by connecting the divided ducts, and each of the divided ducts is mounted with the heat exchanger module and fixed to the heat exchanger module through fastening means. While having a mounting surface, it is good also as having the support structure which supports the said heat exchanger module fixed on the said mounting surface.

  According to this configuration, the heat exchanger is disposed so that the first duct extending in the horizontal direction, the plurality of heat exchanger modules arranged in the horizontal direction, and the second duct extending in the horizontal direction are stacked in the vertical direction. Configured. This configuration is advantageous in reducing the installation area of the heat exchanger.

  The first duct has a support structure in which each of the divided ducts constituting the first duct supports and supports the heat exchanger module on its placement surface, and functions as a duct through which fluid can pass. And a function as a support structure for supporting the heat exchanger module. This can also be advantageous in reducing the footprint of the heat exchanger. Furthermore, the first duct having the support structure is divided into divided ducts where the size increases or the weight increases in order to ensure the necessary strength. The size and weight of the tube do not increase so much, and there is no problem in the manufacture and transportation of each divided duct. That is, it is particularly advantageous to make the first duct, which is a duct and support structure, a split structure in terms of manufacturing and transportation.

  Furthermore, since the heat exchanger module is fixed to the mounting surface of the split duct through the fastening means, the on-site assembly can be facilitated.

  Each of the heat exchanger modules and each of the divided ducts may be integrated into a unit in a state where they are connected to each other so that fluid can flow therethrough. This configuration is advantageous in that the on-site assembly can be further facilitated, and the number of heat exchanger modules and split ducts, that is, the number of units is increased or decreased depending on the required heat exchange capacity. Similar to the above, the heat exchanger can be designed efficiently.

  As described above, according to the above heat exchanger, the heat exchanger module is configured to include a plurality of heat exchanger modules, and at least one of the first and second ducts is configured by a divided duct, thereby exchanging heat. Dividing the module module and the duct into sizes that can be transported and making them easy to manufacture and transport, and connecting the divided ducts through fastening means facilitates on-site assembly and makes the heat exchanger production period Shortening and cost reduction can be achieved. Further, for example, the number of heat exchanger modules and split ducts may be increased or decreased according to the required heat exchange capacity, and there is an advantage that the design of the heat exchanger can be facilitated.

It is a front view of a heat exchanger. It is a side view of a heat exchanger. It is an enlarged side view which expands and shows the connection part of a heat exchanger module and an air supply and exhaust duct. It is an enlarged front view which expands and shows the connection part of supply ducts. It is a front view which expands and shows the connection part of exhaust ducts. (A) The top view which shows the 1st process of the assembly of a heat exchanger, (b) It is the same front view. (A) The top view which shows the 2nd process of the assembly of a heat exchanger, (b) It is the same front view. (A) The top view which shows the 3rd process of the assembly of a heat exchanger, (b) It is the same front view. (A) The front view which shows the 4th process of the assembly of a heat exchanger, (b) It is the same side view. It is a top view which shows schematically another structure of arrangement | positioning with a heat exchanger module, an air supply, and an exhaust duct. It is a side view which shows schematically another structure of arrangement | positioning with a heat exchanger module, an air supply, and an exhaust duct. It is a side view which shows schematically another structure of arrangement | positioning with a heat exchanger module, an air supply, and an exhaust duct. It is a perspective view which shows roughly the unit which integrated the heat exchanger module and the division | segmentation duct.

Hereinafter, an embodiment of a heat exchanger will be described with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature. 1 and 2 show the overall configuration of the heat exchanger 1. The heat exchanger 1 is a heat exchanger that can be used, for example, as a regenerator of a gas turbine. The heat exchanger 1 has a predetermined capacity for exchanging a heat exchanger module 2 in order to achieve a required heat exchange capacity. Are provided (six in the illustrated example). The six heat exchanger modules 2 are arranged in a line in the horizontal direction. Hereinafter, for convenience of explanation, the arrangement direction of the heat exchanger modules 2 is referred to as the left-right direction (that is, the left-right direction in FIG. 1), and the direction orthogonal thereto, that is, the left-right direction in FIG. In addition to the plurality of heat exchanger modules 2, the heat exchanger 1 also supplies the air supply duct 3 and the exhaust duct 4 related to the supply and discharge of the exhaust gas of the gas turbine, and the compressed air from the compressor that performs heat exchange with the exhaust gas. The inlet-side header pipe 5 and the outlet-side header pipe 6 (not shown in FIG. 1 are omitted for ease of understanding) as main components.

  In this example, each heat exchanger module 2 has a substantially rectangular parallelepiped shape as a whole in which the dimension (height) in the front-rear direction is higher than the dimension (width) in the left-right direction and the dimension (length) in the vertical direction. have. Although illustration of the detailed internal configuration is omitted, the heat exchanger module 2 includes two plate fin type heat exchanger cores (first core 21 and second core 22), as shown in FIG. The two cores 21 and 22 are built in a state of being arranged in the front-rear direction. In this way, each heat exchanger module 2 is so-called two-by-one. The laminating direction of the flow paths of the cores 21 and 22 each having a plate fin shape is set in the front-rear direction although not shown. In addition, as a structure of the heat exchanger module 2, it is not limited to this, One core may be sufficient and the core of 3 or more may be included. Further, the core of the heat exchanger module 2 is not limited to the plate fin type, and other types of cores can be adopted. In addition, in the plate fin type core, the form of the corrugated fin serving as the secondary heat transfer surface (enlarged heat transfer surface) is not particularly limited. For example, a plain type, a perforate type, a louver type, a herringbone type, and a serrate type From the above, an appropriate format may be adopted according to the required performance.

  As shown in FIG. 3, each heat exchanger module 2 has a lower end portion for fixing the heat exchanger module 2 to a mounting surface 333 of the air supply duct 3 (details will be described later). The flange 25 is provided, and on the lower surface thereof, there are inlets 211 and 221 for inflow of gas turbine exhaust gas from the air supply duct 3 in the front-rear direction corresponding to the two cores 21 and 22. Open side by side. Further, as will be described in detail later, the upper end portion of each heat exchanger module 2 is configured such that a communication member 45 that connects the heat exchanger module 2 and the exhaust duct 4 so that fluid can flow is attachable. In addition, two outlets 212 and 222 for discharging gas turbine exhaust gas from the cores 21 and 22 to the exhaust duct 4 are arranged on the upper surface in the front-rear direction corresponding to the two cores 21 and 22. (See FIGS. 7 and 8). With this configuration, the exhaust gas of the gas turbine flows into the interior of the heat exchanger module 2 from the lower surface, flows upward in the cores 21 and 22, and is then exhausted from the upper surface of the heat exchanger module 2. become.

  The heat exchanger module 2 includes an air inflow pipe 23 for the compressed air to flow into the cores 21 and 22, and an air inflow pipe for the compressed air to flow out of the cores 21 and 22. Each of the air outflow pipes 24 having a diameter larger than 23 is attached. The air inflow pipe 23 includes first and second air inflow pipes 231 and 232, and the base ends of the first and second air inflow pipes 231 and 232 are respectively the first and second cores 21. , 22 are fixed to a relatively front position and a rear position on one of the left and right side surfaces of the heat exchanger module 2 (see FIGS. 7 and 8). The first and second air inflow pipes 231 and 232 respectively extend forward along the one side surface, and flanges 233 and 234 provided at the tips of the first and second air inflow pipes 231 and 232 are respectively They are arranged so as to face forward, and are arranged side by side in the vertical direction.

  The air outflow pipe 24 also includes first and second two air outflow pipes 241 and 242, and the proximal ends of the first and second air outflow pipes 241 and 242 are different from the air inflow pipe 23, respectively. On the other side of the heat exchanger module 2 on the opposite side, the heat exchanger module 2 is fixed to a relatively front position and a rear position so as to communicate with the first and second cores 21 and 22 ( (See FIGS. 7 and 8). The first and second air outflow pipes 241 and 242 also extend forward along the other side surface, respectively, and flanges 243 and 244 provided at the tips of the first and second air outflow pipes 241 and 242 are These are arranged so as to face forward, and are arranged side by side in the vertical direction.

  Here, as directly shown in FIG. 1, the six heat exchanger modules 2 are configured to be bilaterally symmetric at the center position in the left-right direction, and are arranged on the left side toward the front. The two heat exchanger modules 2 are arranged on the right side toward the front, whereas the air inflow pipe 23 is attached to the right side of the heat exchanger module 2 and the air outflow pipe 24 is attached to the left side. The three heat exchanger modules 2 have an air inflow pipe 23 attached to the left side surface of the heat exchanger module 2 and an air outflow pipe 24 attached to the right side surface. The six heat exchanger modules 2 may all have the same configuration.

  With this configuration, the compressed air flows into the inside of the module 2 from the side surface of the heat exchanger module 2, flows in the left and right directions in the cores 21 and 22, and is then exhausted from the opposite side surface. It will be.

  Such a heat exchanger module 2 is manufactured in a factory, for example, and is transported to a place where the heat exchanger 1 is installed in a state where it has undergone inspection or certification required as a pressure vessel. As will be described later, since the heat exchanger module 2 is only connected to the duct and piping by fastening bolts and nuts at the site, after the on-site assembly of the heat exchanger 1, the inspection or certification necessary for the pressure vessel is performed again. There is no need to receive.

  As shown in FIGS. 2 and 9, the air inflow pipes 231 and 232 of each heat exchanger module 2 are connected to the inlet header pipe 5, respectively. The inlet-side header pipe 5 is disposed at the upper part of the front surface of the heat exchanger 1 (specifically, disposed on the frame 72) and extends in the left-right direction. The inlet header pipe 5 is also formed with an air inlet 51 opened forward at the center position in the left-right direction, and each heat exchanger module 2 in the middle position in the left-right direction. Corresponding to the air inflow pipes 231 and 232, a plurality (12 in the illustrated example) of flanged branch pipes 52 are integrally provided. In the example shown in the figure, the flange faces downward, but the orientation of the flange may be set as appropriate. Each branch pipe 52 and each air inflow pipe 231, 232 communicate with each other via a communication pipe (not shown) (see the one-dot chain line in FIGS. 2 and 9). Further, as shown in FIGS. 2 and 9, the air outflow pipes 241 and 242 of each heat exchanger module 2 are connected to the outlet header pipe 6, respectively. It arrange | positions at the lower part in the front surface of the container 1 (specifically, it arrange | positions on the foundation 71), and is arrange | positioned extending in the left-right direction. Similarly to the inlet header pipe 5, the outlet header pipe 6 is formed with an air outlet 61 opened forward at the center position in the left-right direction, and at the middle position in the left-right direction, Corresponding to the air outflow pipes 241 and 242 of the heat exchanger modules 2, a plurality (12 in the illustrated example) of flanged branch pipes 62 are integrally provided. In the example shown in the figure, the flange faces upward, but the orientation of the flange may be set as appropriate. Each branch pipe 62 and each air outflow pipe 241 and 242 are communicated with each other via a communication pipe (not shown) (see the one-dot chain line in FIGS. 2 and 9).

  Here, the positions of the inlet of the inlet header pipe 5 and the outlet of the outlet header pipe 6 are not limited to the center position in the left-right direction. You may form in an edge part. In addition, a plurality of inlets and outlets may be formed. In this case, in order to make the supply and discharge of air to the plurality of heat exchanger modules 2 uniform, It may be evenly arranged in the direction.

  Further, as described above, the connection between the communication pipe (not shown) and the air inflow pipes 231 and 232 and the air outflow pipes 241 and 242 of the heat exchanger module 2 is performed by connecting the flanges at the ends with bolts and nuts. Is done by fastening.

As shown in FIG. 3 and the like, the air supply duct 3 is a hollow duct having a rectangular cross section, and is fixed on a base 71 constructed in advance and arranged to extend in the left-right direction. At one end (the left end in FIG. 1) of the air supply duct 3, an inlet member 31 having an inlet (not shown) into which the exhaust gas from the gas turbine flows is disposed, and the other end (the right end in FIG. 1). Is closed by a lid member 32 (see also FIG. 7).

  The air supply duct 3 is composed of divided ducts 33 that are divided in the left-right direction. In this example, six air supply ducts 3 are provided so as to correspond to each of the heat exchanger modules 2. It is divided into divided ducts 33. The split duct 33 may not have a one-to-one correspondence with the heat exchanger module 2. For example, the split duct 33 may be two-to-one so as to be a single split duct 33 with respect to two heat exchanger modules 2. It may be a correspondence or a three-to-one correspondence. The number of divisions of the division duct 33 may be set so that the length per piece of the division duct 33 is equal to or less than a predetermined length in consideration of transportation of the division duct 33, for example.

  As shown in an enlarged view in FIG. 4, flanges 331 are integrally formed on the left and right ends of each divided duct 33, and the divided ducts 33 (including the inlet member 31 and the lid member 32) are The flanges 331 are connected to each other by fastening them with bolts and nuts 332. Therefore, the divisional ducts 33 can be very easily connected on site.

  As shown in FIGS. 3, 4, 6, 7 and the like, each of the divided ducts 33 has a mounting surface 333 on which the heat exchanger module 2 is mounted and fixed. The instrument module 2 (the flange 25 at its lower end) and the mounting surface 333 are fixed to each other by fastening with bolts and nuts 335. Therefore, the connection between the heat exchanger module 2 and the air supply duct 3 can also be performed very easily on site. The mounting surface 333 is also formed with two communication holes 34, 34 communicating with the internal space of the air supply duct 3 side by side in the front-rear direction, so that the heat exchanger module 2 is connected to the mounting surface 333. When fixed, the communication holes 34 and 34 and the inflow ports 211 and 221 are continuous, whereby the heat exchanger module 2 (first and second cores 21 and 22 is passed through the communication holes 34 and 34 and the inflow ports 211 and 221. ) And the air supply duct 3 communicate with each other.

  In this way, each divided duct 33 on which the heat exchanger module 2 is placed is configured to support the heat exchanger module 2. Specifically, for example, as shown in FIG. 4 or the like, a reinforcing member 334 is appropriately attached to each divided duct 33 in order to obtain strength necessary for supporting the heat exchanger module 2. Each of the divided ducts 33 and the air supply duct 3 connecting them is a function as a duct for distributing and supplying the gas turbine exhaust gas to each heat exchanger module 2, and as a support structure for supporting each heat exchanger module 2. It has the function of.

  Like the air supply duct 3, the exhaust duct 4 is a hollow duct having a rectangular cross section as shown in FIG. The exhaust duct 4 is fixed on a frame 72 constructed so as to surround the heat exchanger module 2 and the air supply duct 3, whereby the exhaust duct 4 is disposed above the heat exchanger module 2. Yes. Thus, since the exhaust duct is fixed to the frame 72, unlike the heat exchanger module 2, it is not supported by the air supply duct 3. In other words, the air supply duct 3 is configured to support only the heat exchanger module 2 and only needs to have a strength necessary for the heat exchanger module 2, and the strength of the air supply duct 3 is increased unnecessarily. There is no need.

The opening of one end (the left end in FIG. 1) of the exhaust duct 4 is closed by a lid member 42, while the other end (the right end in FIG. 1) is the gas turbine exhaust gas after passing through the heat exchanger module 2. The outflow member 41 which the outflow port (refer FIG. 2) which flows out is opened is arrange | positioned. And this exhaust duct 4 is also comprised from the division | segmentation duct 43 divided | segmented into plurality in the left-right direction, and in this example, the exhaust duct 4 corresponds to each of the heat exchanger modules 2, It is divided into six division ducts 43. Thereby, in this heat exchanger 1, the heat exchanger module 2, the divided duct 33 of the air supply duct 3, and the divided duct 43 of the exhaust duct 4 correspond one-to-one. In addition, the division | segmentation duct 43 of the exhaust duct 4 is the same as the case of the air supply duct 3 that it is not necessary to make it correspond one-to-one with the heat exchanger module 2. As shown in FIG. 5, flanges 431 are integrally formed at the left and right ends of each divided duct 43, and the divided ducts 43 (including the outlet member 41 and the lid member 42) are flanges 431. They are connected to each other by fastening them with bolts and nuts 432. Therefore, the connection between the divided ducts 43 can be performed very easily on site.

  Thus, unlike the air supply duct 3, the exhaust duct 4 does not have a configuration for supporting the heat exchanger module 2, and is a duct that collects and exhausts exhaust from each heat exchanger module 2. It does not have a function as a support structure. In addition, since only the relatively low temperature gas turbine exhaust gas that has passed through the heat exchanger module 2 flows, the exhaust duct 4 and its divided duct 43 are more reinforcing members than the air supply duct 3 and its divided duct 33. It is possible to have a simple structure that does not have the above.

  The exhaust duct 4 and each heat exchanger module 2 communicate with each other via a communication member 45 as shown in FIG. A communication hole 453 communicating with the exhaust duct 4 and opening at the lower end is formed inside the communication member 45. Two communicating members 45 are provided for each divided duct 43 corresponding to the first and second cores 21 and 22 of each heat exchanger module 2, and the two communicating members 45 and 45 are divided into the divided ducts 43. Are arranged and fixed side by side in the front-rear direction. Each communication member 45 is also provided extending downward, and a flange 451 for fixing to the upper surface of each heat exchanger module 2 is integrally formed at a lower end portion thereof. Thus, the heat exchanger module 2 and the communication member 45 are configured to be fixed to each other by fastening with bolts 452, thereby connecting the heat exchanger module 2 and the exhaust duct 4. Can also be done very easily in the field. By fixing the communication member 45 to the heat exchanger module 2, the communication holes 453 and 453 and the outlets 212 and 222 of the heat exchanger module 2 are continuous, and the communication holes 453 and 453 Through the outlets 212 and 222, the heat exchanger module 2 (first and second cores 21 and 22) and the exhaust duct 4 communicate with each other.

  Next, the installation procedure of the heat exchanger 1 will be described with reference to FIGS. First, FIG. 6 shows the first step, in which the divided ducts 33 of the air supply duct 3 are placed one by one on the foundation 71 constructed for leveling at the place where the heat exchanger 1 is installed. The flanges 331 of the adjacent divided ducts 33 and 33 are fastened and connected by bolts and nuts 332 (see FIG. 4). In addition, an inlet member 31 is placed on the left end of the foundation 71 and a lid member 32 is placed on the right end, and fastened and fixed to the adjacent divided ducts 33 by bolts and nuts 332. In this way, by placing all the divided ducts 33, the inlet member 31 and the lid member 32 on the foundation 71 and connecting them together, the air supply duct 3 extending in the left-right direction is completed as shown in FIG. Although not shown, the air supply duct 3 is fixed to the foundation 71 with bolts and nuts. The overall length of the air supply duct 3 is relatively long, and it is difficult or impossible to carry it as it is. By configuring the air supply duct 3 with the divided duct 33, it is possible to carry it from the factory to the installation site. It can be done easily. In addition, since the connection between the divided ducts 33 (and the inlet member 31 and the lid member 32) is performed by fastening the bolts and nuts 332, the assembly of the air supply duct 3 is easy, shortening the construction period and reducing the cost. This can be advantageous.

In the second step shown in FIG. 7, the flanges 233, 234, 243, 244 of the air inflow pipe 23 and the air outflow pipe 24 face forward on the mounting surfaces 333 of the air supply duct 3 completed in the first process. In this direction, the heat exchanger modules 2 are sequentially placed, and are fastened and fixed to the air supply duct 3 by bolts and nuts 335 (see FIG. 3). Thereby, attachment of the heat exchanger module 2 and communication with the air supply duct 3 are completed at once. As described above, the three heat exchanger modules 2 arranged on the left side facing the front and the three heat exchanger modules 2 arranged on the right side facing the front have a symmetrical structure. is doing.

  If all the heat exchanger modules 2 are arranged and fixed on the air supply duct 3 in this way, the entire air supply duct 3 and each heat exchanger module 2 are surrounded in the third step shown in FIG. Assembling the frame 72, the divided ducts 43 of the exhaust duct 4 are arranged one by one on the frame 72, and the flanges 431 of the adjacent divided ducts 43 are fastened to each other by bolts and nuts 442. (See FIG. 5). Further, the lid member 42 is placed on the left end of the frame 72 and the outlet member 41 is placed on the right end, and fastened and fixed to the adjacent divided ducts 43 by bolts and nuts 432. In this way, all the divided ducts 43, the outlet member 41 and the lid member 42 are placed on the frame 72 and connected to each other, thereby completing the exhaust duct 4 extending in the left-right direction above the heat exchanger module 2 ( (See FIG. 9). Although illustration is omitted, the exhaust duct 4 is fixed to the frame 72 by bolts and nuts. Here, the exhaust duct 4 also has a relatively long overall length, like the air supply duct 3, and is difficult or impossible to transport as it is. By doing so, it can be easily transported from the factory to the installation location. In addition, since the outlet member 41, the lid member 42, and the divided duct 43 are connected by fastening the bolts and nuts 432, the assembly of the exhaust duct 4 is easy, which is advantageous in terms of shortening the construction period and reducing costs. obtain. Further, unlike the air supply duct 3, the exhaust duct 4 does not have a function as a support structure and is relatively light due to its simple configuration. In addition, a relatively simple configuration can be achieved.

  In the fourth step shown in FIG. 9, a flange 451 at the lower end of the communication member 45 provided on the lower surface of the exhaust duct 4 completed in the third step is fastened and fixed to the upper surface of each heat exchanger module 2 by bolts 452 ( (See FIG. 3). In this way, each heat exchanger module 2 is communicated with the exhaust duct 4. In addition, the inlet header pipe 5 is attached and fixed to the frame 72, and the outlet header pipe 6 is installed and fixed to the foundation 71, and the branch pipes 52 formed integrally with the header pipes 5 and 6, 62 and the air inflow pipe 23 and the air outflow pipe 24 of the heat exchanger module 2 are communicated with each other via a communication pipe (not shown) (see the one-dot chain line in FIG. 9). The connecting pipe is attached by fastening the flanges with bolts and nuts. Thus, the heat exchanger 1 is completed.

  In the heat exchanger 1 having this configuration, the portion corresponding to the main body including the core of the heat exchanger 1 is divided into a plurality of heat exchanger modules 2 and the air supply connected to the heat exchanger module 2 The duct 3 and the exhaust duct 4 are also configured as divided ducts 33 and 43, respectively. For this reason, the size of one of the heat exchanger module 2 and the divided ducts 33 and 43 becomes relatively small, and manufacturing at the factory is facilitated, and transportation from the factory to the installation location can be easily performed.

  The heat exchanger module 2 and the divided ducts 33 and 43 transported to the installation site are assembled as described above. In the assembly, the divided ducts 33 and 43 (the inlet member 31, the outlet member 41, The connection between the heat exchanger module 2 and the air supply duct 3 and the exhaust duct 4 is also performed by fastening the bolts and nuts 332 and 432. , 452 is performed. In other words, the heat exchanger 1 can be assembled completely by fastening bolts and nuts without performing welding or the like. This eliminates the need for welding equipment and the like on site, and requires assembly. The construction period can be greatly shortened and the cost can be greatly reduced.

  Here, although illustration is omitted, the expansion and contraction tube (bellows) may be interposed at an appropriate location in the heat exchanger 1 to adjust the dimensions when the heat exchanger 1 is assembled. That is, as described above, the heat exchanger 1 includes the air supply duct 3 and the exhaust duct 4 by connecting a large number of divided ducts 33 and 43 to each other, and the air supply duct 3 and the exhaust duct 4. On the other hand, it is configured by individually connecting a large number of heat exchanger modules 2 and assembling them on site. For this reason, due to the dimensional accuracy of each of the divided ducts 33 and 43 and the heat exchanger module 2 and the assembling accuracy of each other, dimensional adjustment may be required when the heat exchanger 1 is assembled. The telescopic tube is advantageous in that it enables such dimensional adjustment easily and greatly improves the workability of on-site assembly. The expansion tube may be interposed, for example, between the air supply duct 3 and each heat exchanger module 2. In this case, in addition to the dimension adjustment function, the expansion tube absorbs, for example, thermal expansion. Can also be performed.

  Further, since the air supply duct 3 (divided duct 33) has a function as a support structure, it is advantageous in that the installation area of the heat exchanger 1 can be made as small as possible. Since the assembly of the exchanger 1 is also simplified, it is advantageous in terms of shortening the construction period and reducing costs. Furthermore, since this heat exchanger 1 is arranged with the heat exchanger modules 2 arranged in the horizontal direction, for example, unlike the arrangement in which the heat exchanger modules 2 are arranged in the vertical direction, one divided duct 33 has one heat duct module 33. Only the exchanger module 2 needs to be supported. That is, the side-by-side structure of the heat exchanger modules 2 has the advantage that the weight per unit area related to the installation of the heat exchanger 1 can be reduced and the support structure thereof can be relatively simplified.

  Further, the parallel configuration of the heat exchanger modules 2 can adjust the capacity of the heat exchanger 1 by increasing or decreasing the number of the heat exchanger modules 2, so that the heat exchanger modules can satisfy the required heat exchange capacity. Capability adjustment can be performed in units of two. Further, it is necessary to change the total length of the air supply duct 3 and the exhaust duct 4 in accordance with the number of the heat exchanger modules 2 arranged side by side. As described above, the air supply duct 3 and the exhaust duct 4 are changed. Are divided so as to be one-to-one with respect to the heat exchanger module 2, so that the need for the divided ducts 33 and 43 of the air supply duct 3 and the exhaust duct 4 according to the number of the heat exchanger modules 2. The number of the air supply duct 3 and the exhaust duct 4 may be determined by the number of the divided ducts 33 and 43 equal to the number of the heat exchanger modules 2. This has the advantage of facilitating the design of the heat exchanger 1 for various required capacities. In particular, as described above, since the heat exchanger 1 employs the horizontal arrangement structure of the heat exchanger modules 2, even if the number of the heat exchanger modules 2 is increased or decreased, the support structure itself is not changed. Almost no need. This is also advantageous for facilitating the design of the heat exchanger 1.

  In the heat exchanger 1, the exhaust duct 4 is not supported by the frame 72 but is placed on the heat exchanger module 2, so that each heat exchanger module 2, and hence the air supply duct 3, is mounted. You may make it support.

In the heat exchanger 1, the air supply duct 3, the heat exchanger module 2, and the exhaust duct 4 are stacked in this order from the bottom to the top, but the air supply duct 3 and the heat exchanger module 2 are arranged. And the arrangement of the exhaust duct 4 is not limited to this, and the order may be reversed. In this case, the exhaust duct 4 may be a duct / support structure. Further, instead of arranging them in the vertical direction, for example, as shown in FIG. 10, the air supply duct 3 (divided duct 33), the heat exchanger module 2 and the exhaust duct 4 (divided duct 43) are arranged side by side in the horizontal direction. May be. Even in this case, there is no particular limitation on the order of arrangement of the air supply duct 3, the heat exchanger module 2, and the exhaust duct 4. Further, for example, as shown in FIG. 11, with respect to the heat exchanger module 2, the air supply duct 3 is disposed on the lower side and the exhaust duct 4 is disposed on the side so as to be an inverted L shape in a side view. It may be. In addition, in FIG. 11, the air supply duct 3 and the exhaust duct 4 may be interchanged, and further, for example, the air supply duct 3 is set laterally with respect to the heat exchanger module 2 so as to be L-shaped in a side view. The exhaust duct 4 may be disposed above.

  Further, as schematically shown in FIG. 12, the heat exchanger modules 2 are arranged side by side in the vertical direction, and the air supply extending in the vertical direction is provided on both sides of the row of the heat exchanger modules 2 therebetween. The heat exchanger 10 may be configured by arranging the duct 3 and the exhaust duct 4. Here, in the heat exchanger 10 shown in the figure, the supply duct 3 and the exhaust duct 4 extending in the vertical direction are configured by connecting the plurality of divided ducts 33 and 43 in the vertical direction, respectively. Here, the split ducts 33 and 43 may be connected to each other by fastening means including bolts and nuts as in the above. The gas turbine exhaust gas inlet for the air supply duct 3 may be provided, for example, on the side of the lower end of the duct (see the white arrow in the figure). On the other hand, the outlet of the exhaust duct 4 may be provided, for example, on the side of the lower end of the duct, similarly to the air supply duct 3. In addition, as shown in FIG. 12, a configuration may be adopted in which the exhaust duct 4 is provided upward from the upper end of the exhaust duct 4 and discharged to the atmosphere. In this case, in order to reduce the installation space of the heat exchanger 10 This can be an advantageous configuration.

  Moreover, in this heat exchanger 10, the 1st communicating part 91 which mutually connects each heat exchanger module 2 and the air supply duct 3, and the 2nd which mutually connects each heat exchanger module 2 and the exhaust duct 4 are communicated. Each of the communicating portions 92 extends in the horizontal direction, and of the first and second communicating portions 91, 92, the first communicating portion 91 is configured by an extendable bellows. As described above, the bellows can be used for absorption of thermal expansion while being used for dimensional adjustment when the heat exchanger 10 is assembled.

  In the heat exchanger 1, the exhaust duct 4 (in other words, the duct disposed above the heat exchanger module 2) does not have a function as a support structure and has a relatively simple structure. Since it has, it does not need to be set as a division | segmentation duct.

  Furthermore, the fastening means for assembling the heat exchanger 1 is not limited to bolts and nuts, and the parts are sandwiched between, for example, the divided ducts or the divided ducts and the heat exchanger module are fastened. Such means (for example, a clamp or a clip) may be employed. Further, bolts / nuts, clamps, clips, and the like may be properly used according to the fastening location in the heat exchanger 1.

  Furthermore, as schematically shown in FIG. 13, for example, the heat exchanger module 2 and the divided duct 33 of the air supply duct 3 that supports the heat exchanger module 2 are joined in advance to integrate the two, so that the unit 8 can be obtained. Good. In this case, for example, in the first step shown in FIG. 6, the units 8 including the heat exchanger module 2 and the divided duct 33 are sequentially installed on the foundation 71. This configuration has the advantage that the number of on-site assembly steps can be further reduced. The unitization is not limited to the split duct 33 of the heat exchanger module 2 and the air supply duct 3, and the heat exchanger module 2 and the split duct 43 of the exhaust duct 4 may be integrated. Further, the heat exchanger module 2, the divided duct 33 of the air supply duct 3, and the divided duct 43 of the exhaust duct 4 may be integrated.

  As described above, the heat exchanger disclosed herein is particularly useful for large heat exchangers because it can improve the workability of on-site assembly.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Heat exchanger module 21 1st core 22 2nd core 3 Air supply duct (1st duct)
33 Divided duct (air supply duct)
332 bolts and nuts (fastening means)
333 Mounting surface 4 Exhaust duct (second duct)
43 Split duct (exhaust duct)
432 Bolts and nuts (fastening means)
442 Bolts and nuts (fastening means)
452 bolt (fastening means)
8 units

Claims (3)

A plurality of heat exchanger modules each including a core and arranged in parallel in a predetermined direction;
Each extending in the predetermined direction, and each of the heat exchanger modules includes a first duct and a second duct connected to allow fluid to flow therethrough,
At least one of the first and second ducts is a heat exchanger configured by connecting divided ducts divided into a plurality in the predetermined direction through fastening means. The heat exchanger according to claim 1,
The predetermined direction is a horizontal direction;
The first duct is disposed on the lower side across the rows of the heat exchanger modules, and the second duct is disposed on the upper side across the rows of the heat exchanger modules,
The first duct is configured by connecting the divided ducts,
Each of the divided ducts has a mounting surface on which the heat exchanger module is mounted and the heat exchanger module is fixed through fastening means, and is fixed on the mounting surface. A heat exchanger having a support structure for supporting the heat exchanger module. The heat exchanger according to claim 1,
Each of the heat exchanger modules and each of the divided ducts are integrated and unitized in a state of being connected to each other so that fluid can flow.

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