JP5618238B2 - Heat exchanger - Google Patents

Description

  The technology disclosed herein particularly relates to a heat exchanger including a plurality of heat exchanger modules.

  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 is arranged by laminating a plurality of heat exchanger modules in the vertical direction, and on both sides sandwiching a stack of heat exchanger modules extending in the vertical direction, An air supply duct and an exhaust duct extending in the vertical direction are arranged, and a large number of connecting pipes communicate each heat exchanger module with each duct.

JP 2007-178092 A

  By the way, in the large heat exchanger as described above, for example, when the heat exchanger module deteriorates with long-term use, there is a demand for replacing only the deteriorated heat exchanger module.

  However, Patent Document 1 described above only conceptually shows the configuration of a heat exchanger in which a plurality of heat exchanger modules are stacked one above the other so that only a specific heat exchanger module can be replaced. There is no description of such a configuration. For example, if an actual heat exchanger as described in Patent Document 1 is to be configured, a predetermined support such as a frame (such as a frame including a brace) that supports each of a plurality of stacked heat exchanger modules. A rigid structure) and a support that supports the air supply and exhaust ducts. Therefore, when a specific heat exchanger module is to be taken out, for example, the support must be disassembled in order to open the work port for removing the connecting pipe and the heat exchanger module. Can happen. Further, as shown in FIG. 1 of Patent Document 1, since the position of the connecting pipe overlaps with the adjacent heat exchanger module in the vertical direction, the connecting pipe is positioned at an intermediate position in the vertical direction, for example. When trying to take out the heat exchanger module, not only the connecting pipe connected to the heat exchanger module but also the connecting pipe that interferes with the heat exchanger module must be removed. Thus, even if it takes out only a specific heat exchanger module, the heat exchanger module adjacent to it will also be affected. Further, in some cases, it is assumed that the space for taking out the heat exchanger module cannot be obtained unless the positions of the air supply duct and the exhaust duct are shifted. In this case, it is only necessary to replace one heat exchanger module. However, all the connecting pipes connected to the air supply duct or the exhaust duct must be removed.

  Thus, even if it is going to replace | exchange a specific heat exchanger module in the heat exchanger containing a some heat exchanger module, while the work man-hour increases, work time will be extended for a long time.

The technology disclosed herein has been made in view of the above points, and the object of the technology is to easily replace the heat exchanger module in a heat exchanger including a plurality of heat exchanger modules. To realize the configuration.

  The inventors of the present application adopt a configuration in which each of a plurality of heat exchanger modules arranged in parallel in a predetermined direction is detachably connected to the first and second communication portions that communicate the air supply and exhaust ducts. Each of the heat exchanger modules is configured to be drawable in a direction orthogonal to the predetermined direction, so that the heat exchanger modules can be replaced individually and easily.

  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 extends in the predetermined direction and is supplied to each of the heat exchanger modules. An air supply duct through which fluid flows, an exhaust duct through which the fluid that has passed through each heat exchanger module flows and extends in the predetermined direction, and is interposed between the heat exchanger module and the air supply duct, A first communication portion that allows both of the fluids to communicate with each other, and a second communication portion that is interposed between the heat exchanger module and the exhaust duct and allows both of the fluids to communicate with each other.

One of the air supply duct and the exhaust duct is disposed below the row of the heat exchanger modules, and the other of the air supply duct and the exhaust duct is disposed above the row of the heat exchanger modules. Accordingly, each of the heat exchanger modules is sandwiched between the first and second communication portions, and each of the heat exchanger modules is placed on a duct disposed on the lower side thereof. The supported ducts arranged on the upper side of the heat exchanger modules are fixed to a frame constructed separately from the ducts arranged on the lower side of the heat exchanger modules, and the heat exchangers The module and the first and second communication portions are detachably connected, and the heat exchanger modules are connected in the predetermined direction in a state where the connection between the first and second communication portions is released. Orthogonal It is drawable to the directions.

  According to this configuration, since the heat exchanger includes a plurality of heat exchanger modules, even if each heat exchanger module is small, a large heat exchange capacity can be achieved.

  Each heat exchanger module communicates with the air supply and exhaust ducts via the first and second communication portions, and the first and second communication portions are detachably connected to the heat exchanger module. ing. For this reason, by releasing the connection of the first and second communication portions to the heat exchanger module, the heat exchanger module is in a state where the edge is cut off from the air supply and exhaust ducts and can be pulled out therefrom. That is, the heat exchanger modules can be individually disconnected from the supply and exhaust ducts.

  Thus, in the above configuration, each heat exchanger module can be pulled out in a direction orthogonal to the direction (predetermined direction) of the row in which a plurality of heat exchanger modules are arranged in parallel. Only a specific heat exchanger module can be extracted without affecting the adjacent heat exchanger modules. That is, it may be easy to pull out the heat exchanger modules individually and replace them with new heat exchanger modules. In the case of installing a new heat exchanger module, the heat exchanger module is pushed into the direction perpendicular to the predetermined direction and positioned at a predetermined position, and then the heat exchanger module is mounted. And the first and second communication portions may be connected to each other.

The frame may be constructed so as to surround the heat exchanger module and a duct that supports the heat exchanger module.

The heat exchanger further includes a mechanism that widens a gap between the heat exchanger module and at least one of the first and second communication portions that is disconnected from the heat exchanger module, and the heat exchanger module includes: The mechanism may be configured to be able to be pulled out in a direction orthogonal to the predetermined direction after widening a gap with at least one of the first and second communication portions.
According to this configuration, since the heat exchanger includes a mechanism that widens the gap between the heat exchanger module and at least one of the first and second communication portions, heat is increased by the gap by widening the gap. The position of the exchanger module can be shifted (in the direction in which the heat exchanger module is sandwiched by the first and second communicating portions). This makes it possible to reliably disconnect the heat exchanger module from both the first and second communication portions, and is advantageous in that the heat exchanger module can be pulled out reliably and easily. For example, the connection portion between the heat exchanger module and the first and second communication portions may stick to each other due to long-term use, and the heat exchanger module cannot be pulled out simply by releasing the connection. However, as described above, the heat exchanger module can be securely pulled out by shifting the position of the heat exchanger module and securely separating the heat exchanger module from the first and second communication portions. .

  At least one of the first and second communication portions has a movable structure that moves so as to widen a gap with the heat exchanger module, and the communication portion having the movable structure moves with the communication portion having the movable structure. It is good also as being comprised so that the clearance gap with a heat exchanger module may spread.

  By doing so, the gap between the heat exchanger module and the communication portion is widened by the movement of the communication portion having a movable structure, and there is no need to move the air supply duct and the exhaust duct extending in a predetermined direction. This further facilitates the work when individually exchanging the heat exchanger modules.

  Each of the heat exchanger modules is configured to be able to be drawn out in a horizontal direction, and the heat exchanger further includes a drawing mechanism that guides the drawing out of the heat exchanger module and supports the drawn out heat exchanger module. It may be provided.

  By using the pull-out mechanism, the heat exchanger module can be pulled out in the horizontal direction, and the pulled-out heat exchanger module can be supported as it is, which further improves the efficiency of the heat exchanger module replacement work. obtain.

  As described above, according to the heat exchanger described above, the communication between each heat exchanger module and the supply and exhaust ducts is detachably connected to the heat exchanger module. The heat exchanger module can be individually disconnected from the air supply and exhaust ducts by releasing the connection of the first and second communication parts to the heat exchanger module to be exchanged. Since each heat exchanger module is configured to be able to be pulled out in a direction orthogonal to the parallel direction of the modules, the heat exchanger module can be individually pulled out, and the modules can be easily replaced.

It is a front view of a heat exchanger. It is a side view of a heat exchanger. FIG. 4 is an enlarged side view (partial cross-sectional view) illustrating an enlarged connection portion between 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. FIG. 4 is a view corresponding to FIG. 3 showing a state where the heat exchanger module is jacked up. It is a front view in the state shown in FIG. FIG. 3 is a view corresponding to FIG. 2 showing a state in which the heat exchanger module is pulled out. 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, and the extraction direction of a heat exchanger module. It is a side view which shows roughly another structure of arrangement | positioning with a heat exchanger module, an air supply, and an exhaust duct, and the extraction direction of a heat exchanger module. It is (a) front view and (b) side view which show further another structure of arrangement | positioning with a heat exchanger module, an air supply, and an exhaust 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 related to supply and discharge are provided as main components.

  In each heat exchanger module 2, in this example, the main body portion has a dimension (height) in the front-rear direction higher than a dimension (width) in the left-right direction and a dimension (length) in the vertical direction. As a whole, it has a substantially rectangular parallelepiped shape. Although the detailed internal configuration of the main body is not shown, the heat exchanger module 2 includes two plate fin type heat exchanger cores (first core 21 and second core 22), as shown in FIG. As described above, 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 illustration is omitted. 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 is provided with a flange 25 for fixing the heat exchanger module 2 to the mounting surface of the air supply duct 3 at the lower end thereof. Two inflow ports 211 and 221 through which gas turbine exhaust gas from the air supply duct 3 flows are opened side by side in the front-rear direction corresponding to the two cores 21 and 22. 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. It is open at. 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 outlet 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 is fixed to a relatively front position and a rear position on one of the left and right side surfaces of the main body of the heat exchanger module 2. 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 main body of the heat exchanger module 2 on the opposite side, the heat exchanger module 2 is fixed at a relatively front position and a rear position so as to communicate with the first and second cores 21 and 22. (See FIG. 3). 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. One heat exchanger module 2 has an air inflow pipe 23 attached to the right side of the main body of the heat exchanger module 2 and an air outflow pipe 24 attached to the left side, whereas In the three heat exchanger modules 2 to be arranged, the air inflow pipe 23 is attached to the left side surface of the main body, and the air outflow pipe 24 is attached to the right side surface. The six heat exchanger modules 2 may all have the same configuration.

  Accordingly, 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. Become.

  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 a duct or the like by fastening bolts and nuts at the site, after the on-site assembly of the heat exchanger 1, it undergoes inspection or certification necessary as a pressure vessel again. There is no need.

  As shown in FIG. 2, 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 is disposed to extend 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 are communicated with each other via a communication pipe 53 (note that the communication pipe 53 is not shown in FIG. 1 for easy understanding). Here, the flanges 233 and 234 of the air inflow pipes 231 and 232 and the flange of the communication pipe 53 face each other in the front-rear direction.

  Further, the air outflow pipes 241 and 242 of each heat exchanger module 2 are respectively connected to the outlet header pipe 6, and the outlet header pipe 6 is arranged at the lower part of the front surface of the heat exchanger 1. (Specifically, it is disposed on the foundation 71) and extends 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. The branch pipes 62 and the air outflow pipes 241 and 242 are communicated with each other via the communication pipe 63 (note that the communication pipe 63 is not shown in FIG. 1 as with the communication pipe 53). Here, the flanges 243 and 244 of the air outflow pipes 241 and 242 and the flange of the communication pipe 63 are similar to the directions of the flanges 233 and 234 of the air inflow pipes 231 and 232 and the flange of the communication pipe 53, respectively. Opposite the front-rear direction.

  The communication pipes 53 and 63 are connected to the air inflow pipes 231 and 232 and the air outflow pipes 241 and 242 of the heat exchanger module 2 by connecting the flanges at their ends with bolts and nuts although not shown. It is done by fastening. Therefore, the connection between the communication pipes 53 and 63 and the air inflow pipes 231 and 232 and the air outflow pipes 241 and 242 of the heat exchanger module 2 can be easily released by removing the bolts and nuts. is there.

  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.

  As shown in FIG. 3 and the like, the air supply duct 3 is a hollow duct having a rectangular cross section. As will be described in detail later, the air supply duct 3 is fixed on a foundation 71 constructed in advance and is provided extending in the left-right direction. ing. 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.

  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 and 4 and the like, each divided duct 33 has a mounting surface 333 on which the heat exchanger module 2 is mounted and fixed, and the heat exchanger module 2 ( The flange 25) at the 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. At the same time, the connection between the heat exchanger module 2 and the air supply duct 3 can be easily released by removing the bolts and nuts 335. 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, the upper surface portion of the divided duct 33 including the mounting surface 333 is interposed between the air supply duct 3 and each heat exchanger module 2 and allows both to communicate with each other (first) communication portion. Configure. It should be noted that an expansion tube (bellows) is interposed between the air supply duct 3 and each heat exchanger module 2 so that, for example, absorption of thermal expansion or dimensional adjustment during assembly of the heat exchanger 1 is performed. You may do it.

  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 respect to the heat exchanger module 2. FIG. 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. The exhaust duct 4 may be integrated without being divided.

  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.

  Thus, since the structure of the exhaust duct 4 is simplified, the structure of the frame 72 that supports the exhaust duct 4 is also simplified. Specifically, a reinforcing member such as a brace is not necessary on the front side and the rear side of the portion corresponding to the arrangement height of the heat exchanger module 2 in the frame 72. Avoiding interference between the communication pipes 53 and 63 connected to the air inflow pipe 23 and the air outflow pipe 24 of the exchanger module 2, and the air inflow pipe 23 and the air outflow pipe 24 and the communication pipe 53. , 63 can be increased, and connection and disconnection (fastening and removing of bolts and nuts) can be facilitated. On the other hand, on the rear side, as will be described later, this is equivalent to forming an opening through which each heat exchanger module 2 can pass, and the heat exchanger module 2 can be easily pulled out and pushed in. In addition, although illustration is abbreviate | omitted, you may provide reinforcement members, such as a bracing, in the front side of the part equivalent to the arrangement | positioning height of the said air supply duct 3 in the frame 72, and a rear side as needed.

  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 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. At the same time, the connection between the heat exchanger module 2 and the communication member 45 (exhaust duct 4) can be easily released by removing the bolt 452. 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. This communication member 45 is interposed between the exhaust duct 4 and each heat exchanger module 2 and constitutes a (second) communication portion that allows both fluids to communicate with each other. The communication member 45 is configured to be movable, and details thereof will be described later.

  In the heat exchanger 1 having this configuration, the air supply duct 3 (divided duct 33) has a function as a support structure, so that the installation area of the heat exchanger 1 can be reduced as much as possible. Is advantageous. Moreover, since this heat exchanger 1 arranges the heat exchanger modules 2 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. 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.

  The heat exchanger 1 is configured such that, for example, when the heat exchanger module 2 needs to be replaced due to deterioration or the like, the heat exchanger module 2 can be replaced individually and easily. . Hereinafter, the configuration related to the module replacement will be described with reference to the drawings.

  As shown in FIGS. 3 and 6, each communication member 45 that allows the exhaust duct 4 and each heat exchanger module 2 to communicate with each other is attached to the exhaust duct 4 so as to be slidable in the vertical direction. That is, the exhaust duct 4 has, on the lower surface thereof, a support portion 44 that supports each communication member 45 so as to be slidable in the vertical direction, and each communication member 45 supported relative to the support portion 44 is relatively It is possible to change the state between a state where the heat exchanger module 2 is positioned below and a state where the heat exchanger module 2 is positioned relatively above and away from the heat exchanger module 2. . A seal member 46 such as a gland packing is interposed between each communication member 45 and the support portion 44, so that each communication member 45 can be slid and supported by each communication member 45. The sealing property between the portions 44 is ensured. Thus, since each communication member 45 has a movable structure, as shown in FIG. 6, by removing the bolt 452 and moving the communication member 45 upward, the heat exchanger module 2 and the communication member are moved. 45 (that is, the exhaust duct 4) is reliably disconnected and a predetermined gap is formed between the heat exchanger module 2 and the communication member 45.

  On the other hand, as shown in FIGS. 3, 6, and 7, a pair of receiving portions 26 with which the piston of the hydraulic jack 83 abuts is integrally provided on the front surface and the rear surface of each heat exchanger module 2. Here, when exchanging the heat exchanger module 2, a total of four hydraulic jacks 83 are installed on the upper surface of the air supply duct 3, one on each side on the front side and the rear side of the heat exchanger module. It is what is done. Here, the hydraulic jack 83 is installed on the air supply duct 3 only when the heat exchanger module 2 is replaced, and is removed during normal operation of the heat exchanger 1. May be provided in advance in the heat exchanger 1 (for example, in the air supply duct 3) so as to correspond to each heat exchanger module 2.

  As described above, the communication member 45 is slid upward to form a predetermined gap above the heat exchanger module 2, so that when the hydraulic pressure is supplied to each hydraulic jack 83, the heat exchanger module 2 is It is possible to lift upward. Thereby, the connection between the heat exchanger module 2 and the air supply duct 3 is surely disconnected, and a predetermined gap is formed between the mounting surface 333 below the heat exchanger module 2. (See FIGS. 6 and 7).

  When the heat exchanger module 2 is replaced, a replacement subframe 8 shown in FIGS. 7 and 8 is used. The sub-frame 8 includes a pair of rails 81 and 81 that extend in the front-rear direction and have a predetermined width in the left-right direction, and leg portions 82 that support the rear end of each rail 81. ing. As shown in FIG. 7, each rail 81 is provided with a large number of rollers 811 having a rotation axis extending in the left-right direction along the rail, and each rail 81 has the same configuration as a so-called roller conveyor. Have. Therefore, the subframe 8 has a function of moving the heat exchanger module 2 in the front-rear direction along the rail 81 (that is, guiding it in the front-rear direction).

When the heat exchanger module 2 is replaced, the subframe 8 is disposed on the rear side of the heat exchanger 1 at a position in the left-right direction corresponding to the heat exchanger module 2 to be replaced. Then,
A pair of rails 81, 81 are inserted in the gap between the lower surface of the heat exchanger module 2 and the mounting surface 333 formed by jacking up from the rear side of the heat exchanger 1 to the rail 81. Is supported by the mounting surface 333 of the air supply duct 3, while the rear portion of the rail 81 is supported by the leg portion 82, as shown in FIG. And it will be arranged horizontally.

  Next, the exchange procedure of the heat exchanger module 2 will be described. First, with respect to the heat exchanger module 2 to be exchanged, the bolts and nuts 335 are removed to release the connection with the air supply duct 3, and the connection with the communication member 45 is released by removing the bolt 452. The connection between the air inflow pipe 23 and the air outflow pipe 24 and the communication pipes 53 and 63 is also released by removing the bolts and nuts. Here, since all the connecting portions of the air inflow pipe 23 and the air outflow pipe 24 and the communication pipes 53 and 63 are set on the front side of the heat exchanger 1, the bolts and nuts can be easily removed and It can be performed with good workability.

  Then, if all the fastenings are removed, as described above, each communication member 45 is slid upward, thereby completely separating the heat exchanger module 2 and the communication member 45 (see FIG. 6). . As described above, since the communication member 45 has a movable configuration, the heat exchanger module 2 and the communication member 45 can be completely separated from each other without moving the exhaust duct 4, and heat exchange can be performed. The gap between the vessel module 2 and the communication member 45 can be widened. In other words, only the heat exchanger module 2 to be exchanged can be separated from the exhaust duct 4 and the communication member 45 to form a space above it. Even if the heat exchanger module 2 and the communication member 45 are attached to each other due to long-term use, the communication member 45 has a movable configuration, so that it communicates with the heat exchanger module 2. It is easy to completely separate the member 45.

  Next, the hydraulic jack 83 is installed at a predetermined position on the upper surface of the air supply duct 3, and the heat exchanger module 2 is lifted upward by the hydraulic jack 83 as shown in FIGS. Thus, only the heat exchanger module 2 to be replaced is completely separated from the air supply duct 3 (mounting surface 333). Even if the heat exchanger module 2 and the mounting surface 333 are attached to each other, it can be easily separated completely from each other. At this time, since the air inflow pipe 23 and the air outflow pipe 24 and the communication pipes 53 and 63 are connected to each other by flanges facing in the front-rear direction, the heat exchanger module 2 is jacked as shown in FIG. When up, both flanges do not interfere with each other. Note that the connection between the communication pipes 53 and 63 and the branch pipes 52 and 62 may be released, and the communication pipes 53 and 63 may be completely removed.

  With the heat exchanger module 2 thus jacked up, the rail 81 of the subframe 8 is inserted into the gap between the lower surface of the heat exchanger module 2 and the mounting surface 333 as described above, and the hydraulic jack The oil pressure at 83 is removed and the jacked up heat exchanger module 2 is lowered. Thus, the heat exchanger module 2 is placed on the rail 81. When the roller 811 provided on the rail 81 rolls, the heat exchanger module 2 can be easily moved to the rear of the heat exchanger 1 along the rail 81. At this time, since there is no bracing or the like on the rear side of the frame 72, there is no obstacle to the heat exchanger module 2 that moves backward, and the air inflow pipe 23, the air outflow pipe 24, and the communication pipe 53 , 63 are connected to each other by flanges facing in the front-rear direction, so that the flanges do not interfere with each other when the heat exchanger module 2 is moved backward. Therefore, as shown virtually in FIG. 8, the heat exchanger module 2 can be easily pulled out of the frame 72.

  In addition, when the new heat exchanger module 2 is attached after the heat exchanger module 2 to be exchanged is pulled out in this way, the reverse procedure to the above may be performed. That is, the new heat exchanger module 2 placed on the rail 81 is moved forward along the rail 81 so that the heat exchanger module 2 is positioned at a predetermined position, and the hydraulic jack 83 is used. The heat exchanger module 2 may be placed on the placement surface 333 after jacking up the heat exchanger module 2 and removing the subframe 8. Thereafter, the heat exchanger module 2 is connected to the air supply duct 3 and the communication member 45 by bolts / nuts 335 and bolts 452, and the air inflow pipe 23 and the air outflow pipe 24 are also connected through the bolts / nuts. The communication pipes 53 and 63 are connected to each other. Thus, the exchange of the heat exchanger module 2 is completed.

  As described above, in this heat exchanger 1, only a specific heat exchanger module 2 out of the plurality of heat exchanger modules 2 arranged in the left-right direction is separated from the duct and pulled backward, and heat exchange is performed. The instrument module 2 can be pushed forward and installed at a predetermined position. That is, while the plurality of heat exchanger modules 2 are arranged side by side in the left-right direction, the air supply duct 3 and the exhaust duct 4 that also extend in the left-right direction are arranged so as to sandwich the row of the heat exchanger modules 2. Since the modules 2 are arranged on the lower side and the upper side, respectively, at the height position where the heat exchanger module 2 is arranged, at least the rear side of the heat exchanger 1 is opened, and the heat exchanger module 2 can be easily pulled out and pushed in.

  Further, as shown briefly in FIG. 1, the air inflow pipe 23 and the air outflow pipe 24 of the heat exchanger module 2 are adjacent to the heat exchanger module 2 (including the air inflow pipe 23 and the air outflow pipe 24). However, the heat exchanger modules 2 do not interfere with each other. Therefore, when pulling out a specific heat exchanger module 2 backward, there is no problem in relation to other heat exchanger modules 2, which also facilitates individual exchange of the heat exchanger modules 2. Above is an advantageous configuration.

  Further, by arranging the heat exchanger modules 2 in the left-right direction, the height positions at which the heat exchanger modules 2 are disposed are the same. This is advantageous in that the configuration of the sub-frame 8 used for exchanging the heat exchanger module 2 is simplified, that is, the height position of the rail 81 can be made constant, and the installation position of the sub-frame 8 can be changed. Since all the heat exchanger modules 2 can be replaced simply by moving them in the left-right direction, the replacement work of the heat exchanger modules 2 can be further facilitated. In addition, although illustration is abbreviate | omitted so that the sub-frame 8 may be guided to the left-right direction and can be easily moved to the position of the heat exchanger module 2 to be replaced, it extends to the rear side of the heat exchanger 1 in the left-right direction. A guide rail may be laid in advance, and the subframe 8 may be moved in the left-right direction along the guide rail.

  Furthermore, the exhaust duct 4 disposed on the upper side of the heat exchanger module 2 has a simple configuration as described above, and accordingly, the frame 72 that supports the exhaust duct 4 can also have a simple configuration. It becomes possible. Thus, although the plurality of heat exchanger modules 2 are arranged inside the frame 72, the reinforcing members such as braces are omitted at the height position where the heat exchanger module 2 is arranged, and the heat exchanger An opening through which the module 2 is taken in and out can be provided, and this is also a configuration that can easily pull out and push in the heat exchanger module 2. That is, it can be said that the frame 72 supporting the duct has an opening through which the heat exchanger module 2 passes.

  In addition, the air inflow pipe 23 and the air outflow pipe 24 of the heat exchanger module 2 and the communication pipes 53 and 63 connected thereto are connected to each other by flanges facing in the front-rear direction on the front side of the heat exchanger 1. Therefore, when the heat exchanger module 2 is jacked up and when the heat exchanger module 2 is moved backward and forward, both flanges do not interfere with each other. This is an advantageous configuration for enhancing the exchange workability of the heat exchanger module 2.

  Furthermore, since the heat exchanger module 2 is individually connected to the ducts 3 and 4 and the header pipes 5 and 6, it can be individually separated from the ducts 3 and 4 and the header pipes 5 and 6, Since fastening means such as bolts and nuts are employed at the connection locations, connection and disconnection of the heat exchanger module 2 are easy and simple by fastening and removing the fastening means. This improves the workability of the replacement work.

  Thus, in the heat exchanger 1 described above, the communication member 45 that allows the heat exchanger module 2 and the exhaust duct 4 to communicate with each other has a movable configuration, so that the object to be exchanged can be obtained without moving the exhaust duct 4. It becomes possible to widen the gap between the heat exchanger module 2 and the communication member 45. This is advantageous in that the heat exchanger module 2 can be jacked up to allow the rail 81 to be inserted under the heat exchanger module 2 and communicated with the heat exchanger module 2 as described above. When the member 45 is stuck to each other, or when the heat exchanger module 2 and the mounting surface 333 of the air supply duct 3 are stuck to each other, it is advantageous in that they can be easily separated completely. It is. Here, the movable configuration of the communication member 45 may be realized by configuring the communication member 45 with an extendable bellows. In this configuration, when the communication member 45 is contracted, the gap between the communication member 45 and the heat exchanger module 2 is widened.

  In the above configuration, the communication member 45 that allows the heat exchanger module 2 and the exhaust duct 4 to communicate with each other has a movable configuration. For example, the communication portion that allows the heat exchanger module 2 and the air supply duct 3 to communicate with each other. The upper surface portion of the divided duct 33 including the mounting surface 333 may be configured to be movable so that the gap between the lower surface of the heat exchanger module 2 and the mounting surface 333 is widened. In this case, the specific example of the movable configuration is not particularly limited, and as described above, the upper surface portion of the divided duct 33 may be configured to be vertically movable, or a bellows may be employed. Moreover, you may make it open both the upper side and the lower side of the heat exchanger module 2 by making both into a movable structure. Furthermore, the movable configuration of the communication member 45 may be omitted. In this case, the heat exchanger module 2, the communication member 45, and the exhaust duct 4 are configured using a plurality of divided ducts 43. The divided duct 43 (however, the connection with the adjacent divided duct 43 is released) may be lifted by the hydraulic jack 83 as a unit.

  Moreover, in the said structure, although the connection part of the air inflow tube 23 and the air outflow tube 24 of the heat exchanger module 2 and the communication pipes 53 and 63 connected to it is set to the front side of the heat exchanger 1. It may be on the rear side of the heat exchanger 1. However, in this case, in order to avoid interference when the heat exchanger module 2 is moved backward or forward, it is desirable to shift those connecting portions in the vertical direction with respect to the installation height of the heat exchanger module 2.

  Further, 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, 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. Further, instead of arranging them in the vertical direction, for example, as shown in FIG. 9, with respect to the heat exchanger module 2, the air supply duct 3 is arranged on the lower side and the exhaust duct 4 is arranged on the side, respectively. May be inverted L-shaped. In this case, as indicated by a virtual line in the figure, the heat exchanger module 2 may be pulled out backward, for example, or pulled upward. In FIG. 9, the air supply duct 3 and the exhaust duct 4 may be interchanged, and further, for example, the air supply duct 3 is arranged laterally with respect to the heat exchanger module 2 so as to be L-shaped in a side view. In addition, the exhaust ducts 4 may be arranged above each other. In this case, the heat exchanger module 2 may be drawn forward or backward, for example.

Further, for example, as shown in a side view in FIG. 10, the air supply duct 3, the heat exchanger module 2, and the exhaust duct 4 may be arranged horizontally in the front-rear direction. There is no restriction | limiting in particular in the order of arrangement | positioning of the air supply duct 3, the heat exchanger module 2, and the exhaust duct 4. FIG. In this case, the heat exchanger module 2 may be pulled upward, for example, as indicated by a virtual line in FIG.

Further, as schematically shown in FIG. 11, 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 to the same figure, the 1st communication part 91 which mutually connects each heat exchanger module 2 and the air supply duct 3, and each heat exchanger module 2 and the exhaust duct 4 are mutually connected. The second communication portions 92 that communicate with each other extend in the horizontal direction. Thus, the communication portions 91 and 92 do not interfere with the heat exchanger module 2 and the communication portions 91 and 92 adjacent thereto. Moreover, the 1st communication part 91 is comprised by the bellows which can be expanded-contracted among the 1st and 2nd communication parts 91 and 92, and while absorbing thermal expansion by this bellows, each heat exchanger module 2 is exchangeable. In this case, the gap between the heat exchanger 1 and the first and second communication portions 91 and 92 can be widened as described above. In this case, each heat exchanger module 2 interferes with the air supply duct 3, the exhaust duct 4, and the communication portions 91 and 92 if the heat exchanger modules 2 are drawn out in the horizontal direction as indicated by phantom lines in FIG. It is possible to pull out the heat exchanger module 2 without doing so. For this purpose, it is desirable that the drawer side of the heat exchanger module 2 is provided in advance with an opening through which the heat exchanger module 2 can pass, for example, in a frame that supports the heat exchanger module 2 or the like. Further, the sub-frame 9 that supports the drawn heat exchanger module 2 may be configured to be vertically movable so as to correspond to the arrangement heights of the heat exchanger modules 2 arranged in the vertical direction. .

  Further, in the heat exchanger 1, the air supply duct 3 and / or the exhaust duct 4 may be integrated ducts that extend in a predetermined direction without being divided ducts.

  The subframe 8 may be configured to be foldable so that it can be stored in a predetermined storage location when not in use, for example. In addition, as a structure of the subframe, a rail as a guiding function is used, for example, an air supply duct 3 so as to separate a function for guiding the movement of the heat exchanger module 2 and a function for supporting the drawn heat exchanger module 2. On the other hand, a support base for supporting the drawn out heat exchanger module 2 may be installed adjacent to the heat exchanger 1. Furthermore, the subframe is arranged on the upper surface of the air supply duct 3 so as to be pulled out together with the base (corresponding to the rail) on which the heat exchanger module is mounted, and the legs that are folded along with the drawer are automatically A configuration may be adopted in which the base and the heat exchanger module 2 placed thereon are supported in such a manner as to be developed.

  Furthermore, the fastening means for assembling the heat exchanger 1 is not limited to bolts and nuts. For example, by inserting members such as clamps and clips, the divided ducts or the divided ducts and the heat exchanger Means for fastening the module may be employed. Also in this case, the efficiency of the exchange work of the heat exchanger module 2 can be improved. Further, bolts / nuts, clamps, clips, and the like may be properly used according to the fastening location in the heat exchanger 1.

  As described above, the heat exchanger disclosed herein is particularly useful for a heat exchanger including a plurality of heat exchanger modules because it can improve the workability related to the exchange of the heat exchanger modules.

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 Placement surface (first communication part)
4 Exhaust duct (second duct)
43 Split duct (exhaust duct)
432 Bolts and nuts (fastening means)
442 Bolts and nuts (fastening means)
45 Communication member (2nd communication part)
452 bolt (fastening means)
8 Subframe (drawer mechanism)
9 Subframe (drawer mechanism)

Claims (5)

A plurality of heat exchanger modules each including a core and arranged in parallel in a predetermined direction;
An air supply duct extending in the predetermined direction and through which a fluid supplied to each heat exchanger module flows;
An exhaust duct that extends in the predetermined direction and through which the fluid that has passed through each of the heat exchanger modules flows;
A first communication portion that is interposed between the heat exchanger module and the air supply duct to allow fluid to flow therethrough; and a fluid that is interposed between the heat exchanger module and the exhaust duct. A second communication part that allows both to communicate with each other,
One of the air supply duct and the exhaust duct is disposed below the row of the heat exchanger modules, and the other of the air supply duct and the exhaust duct is disposed above the row of the heat exchanger modules. , Thereby each of the heat exchanger modules is sandwiched between the first and second communication portions,
Each of the heat exchanger modules is placed and supported on a duct disposed on the lower side thereof,
The duct disposed on the upper side of each heat exchanger module is fixed to a frame constructed separately from the duct disposed on the lower side of each heat exchanger module,
Each of the heat exchanger modules and the first and second communication portions are detachably connected, and each of the heat exchanger modules is in a state where the connection of the first and second communication portions is released. The heat exchanger is configured to be drawable in a direction orthogonal to the predetermined direction. The heat exchanger according to claim 1,
The heat exchanger is constructed such that the frame surrounds the heat exchanger module and a duct that supports the heat exchanger module . The heat exchanger according to claim 1 or 2 ,
Further comprising a mechanism for widening a gap between at least one of the first and second communicating portions that has been disconnected from the heat exchanger module and the heat exchanger module;
The heat exchanger module is configured to be capable of being pulled out in a direction orthogonal to the predetermined direction after expanding a gap with at least one of the first and second communication portions by the mechanism . The heat exchanger according to claim 3 ,
At least one of the first and second communication portions has a movable structure that moves so as to widen a gap with the heat exchanger module,
The heat exchanger comprised so that the clearance gap between the said communication part and the said heat exchanger module may spread when the communication part which has the said movable structure moves . In the heat exchanger according to any one of claims 1 to 4,
Each of the heat exchanger modules is configured to be drawable in the horizontal direction,
A heat exchanger that further includes a drawer mechanism that guides the drawer of the heat exchanger module and supports the drawn out heat exchanger module.

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