JP6605315B2 - Heat exchanger support structure - Google Patents

Description

  The present invention relates to a heat exchanger support structure.

  As a conventional boiler, a boiler including a reaction furnace and a heat exchanger provided in a flow path of a fluid supplied from the reaction furnace is known (for example, see Patent Document 1). The boiler is provided with a heat exchanger support structure including a support member for supporting the heat exchanger in the flow path.

JP 2008-224184 A

  In the heat exchanger support structure as described above, when the heat exchanger expands and contracts due to the influence of heat, a compressive force or the like acts between the members, causing damage to the support member of the heat exchanger support structure. was there. Therefore, a heat exchanger support structure that can suppress damage to the support member has been demanded.

  An object of this invention is to provide the heat exchanger support structure which can suppress the damage to a support member.

  A heat exchanger support structure according to the present invention is a boiler heat exchanger support structure including a reaction furnace and a heat exchanger provided in a flow path of a fluid supplied from the reaction furnace, and heat exchange A support member that supports the chamber in the flow path, and the support member includes an expansion / contraction permission member that allows expansion and contraction of the heat exchanger.

  In the heat exchanger support structure according to the present invention, the support member that supports the heat exchanger in the flow path includes an expansion / contraction permission member that allows expansion and contraction of the heat exchanger. Therefore, even when the heat exchanger expands and contracts due to the influence of heat, the expansion / contraction permission member of the support member allows expansion and contraction of the heat exchanger, and thus damage to the support member can be suppressed. As described above, damage to the support member can be suppressed.

  In the heat exchanger support structure according to the present invention, the expansion / contraction permission member includes a first member connected to the heat exchanger side and a second member connected to the structure side of the boiler. Of these members and the second member, one member may have a shape for receiving the other member. Thereby, the structure which accepts expansion-contraction can be simply formed by using two members.

  In the heat exchanger support structure according to the present invention, the receiving-side member of the first member and the second member may have an opening for removing foreign matter. As a result, even if foreign matter enters the receiving side member, the foreign matter can be removed from the opening. Therefore, it is difficult for foreign matter to accumulate in the receiving side member, and even if foreign matter accumulates, it can be easily removed.

  In the heat exchanger support structure according to the present invention, the receiving member of the first member and the second member forms a receiving portion by arranging a pair of plate-like members facing each other. It may be. Thus, by forming the receiving portion with a plate-like member, the receiving portion can be easily formed on the receiving-side member with a simple structure.

  In the heat exchanger support structure according to the present invention, the member on the insertion side of the first member and the second member may be formed of a plate-like member. Thereby, the member on the insertion side can also have a simple structure.

  In the heat exchanger support structure according to the present invention, the member on the insertion side of the first member and the second member may have a shape in which the tip end side is inclined with respect to the insertion direction. As a result, even if foreign matter is accumulated on the receiving member, the distal end side of the insertion member is inclined with respect to the insertion direction, so that the foreign matter can be scraped out.

  In the heat exchanger support structure according to the present invention, a set of the first member and the second member facing in the horizontal direction is provided at a plurality of positions in the vertical direction, and at least one set of the first member and the second member is provided. Of the members, the receiving-side member can receive the insertion-side member in the vertical direction. Thus, even when the heat exchanger expands and contracts in the vertical direction, the receiving side member receives the insertion side member in the vertical direction, so that the vertical expansion and contraction can be allowed.

  In the heat exchanger support structure according to the present invention, in the first member and the second member facing in the horizontal direction, the receiving side member is the insertion side member, and the first member and the second member are facing each other. May be acceptable in opposite directions. Thereby, even when the heat exchanger expands and contracts in the opposing direction in which the first member and the second member are opposed in the horizontal direction, the receiving-side member receives the insertion-side member in the opposing direction. The expansion and contraction in the facing direction can be allowed.

  According to the present invention, damage to the support member can be suppressed.

It is a figure which shows the structure of the boiler with which the heat exchanger support structure which concerns on embodiment of this invention is applied. It is a side view which shows the structure of the heat exchanger support structure applied to the boiler of FIG. It is an enlarged view of the heat exchanger support structure shown in FIG. It is a figure for demonstrating the effect | action and effect of the heat exchanger support structure shown in FIG. It is a perspective view of the heat exchanger support structure which concerns on a modification. It is a perspective view of the heat exchanger support structure which concerns on a modification.

  Embodiments of the present invention will be described with reference to the drawings. However, the following embodiments are exemplifications for explaining the present invention and are not intended to limit the present invention to the following contents. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  First, with reference to FIG. 1, the structure of the boiler to which the heat exchanger support structure of this embodiment is applied is demonstrated. Drawing 1 is a figure showing the composition of the boiler to which the heat exchanger support structure concerning the embodiment of the present invention is applied. As shown in FIG. 1, the boiler 1 includes a reaction furnace 2 having a vertically long cylindrical shape and having a combustion section 3 therein. The boiler 1 also includes a communication unit 4 through which the fluid supplied from the reaction furnace 2 passes, and a separation unit 5 that separates the fluid into gas and solid particles. The communication unit 4 and the separation unit 5 may be referred to as a fluid flow path 6. A heat exchanger 10 for exchanging heat with the fluid is provided in the flow path 6. In addition, as the flow path 6 in which the heat exchanger 10 is provided, the communication part 4 provided on the upper side of the reaction furnace 2 and the separation part 5 connected to the communication part 4 are illustrated, but the heat exchanger 10 is provided. The position where it is provided is not particularly limited. For example, the heat exchanger 10 may be provided in the flow path near the lower end of the reaction furnace 2. Moreover, the type of the boiler 1 is not particularly limited, either a circulating fluidized bed boiler or another type of boiler may be used.

  Next, with reference to FIGS. 2-4, the heat exchanger support structure 100 which concerns on this embodiment is demonstrated in detail. One horizontal direction is an X-axis direction, a horizontal direction orthogonal to the X-axis direction is a Y-axis direction, and a vertical direction is a Z-axis direction. The left side in FIG. 2 is the X axis positive side, the front side is the Y axis positive side, and the upper side in the vertical direction is the Z axis positive side. In the following description, description may be made using the XYZ axes.

  As shown in FIG. 2, the heat exchanger 10 to be supported includes a heat exchange tube 11 through which a heat medium flows. The heat exchange pipe 11 extends mainly in the X-axis direction, and as a whole shape of the heat exchanger 10, meanders a plurality of times so as to spread in the vertical direction. Thus, since the heat exchanger tube 11 mainly extends in the X-axis direction, the heat exchanger 10 mainly expands and contracts in the X-axis direction due to the influence of heat. However, the heat exchanger 10 expands and contracts in the vertical direction (that is, the Z-axis direction). The tip end portion on the negative side of the X-axis of the heat exchanger 10 faces the furnace wall W that forms the flow path 6 in a state of being separated in the X-axis direction.

  The heat exchanger support structure 100 includes a support member 50 that supports the heat exchanger 10 in the flow path 6. That is, the support member 50 is disposed between the front end portion of the heat exchanger 10 and the furnace wall W, and is connected to the heat exchanger 10 and the furnace wall tube 12 of the furnace wall W. As a result, the heat exchanger 10 is supported by the furnace wall tube 12 via the support member 50. The support member 50 includes expansion / contraction permission members 20 </ b> A and 20 </ b> B that allow the heat exchanger 10 to expand and contract.

  As shown in FIG. 3, the expansion / contraction permission members 20 </ b> A and 20 </ b> B are spaced apart from each other in the vertical direction and support the heat exchanger 10 on the upper side and the lower side, respectively. The tip portion of the heat exchanger 10 on the negative side of the X-axis has an inclined portion 11a where the heat exchange tube 11 is inclined upward toward the positive side of the X-axis, and a horizontal portion from the lower end side of the inclined portion 11a toward the positive side of the X-axis. And a curved portion 11c connecting the inclined portion 11a and the horizontal portion 11b. The upper expansion / contraction permission member 20A is connected to the inclined portion 11a. The tip of the heat exchanger 10 on the negative side of the X-axis is an inclined portion 11d where the heat exchange tube 11 is inclined downward toward the positive side of the X-axis, and the upper end side of the inclined portion 11d is directed toward the positive side of the X-axis. And a horizontal portion 11e extending horizontally and a curved portion 11f connecting the inclined portion 11d and the horizontal portion 11e. The lower expansion / contraction permission member 20B is connected to the inclined portion 11d. As described above, by providing the heat exchanger 10 with the inclined portions 11a and 11d, a space for arranging the expansion / contraction permission members 20A and 20B can be secured.

  The expansion / contraction permission member 20 </ b> B includes a first member 21 </ b> B connected to the heat exchanger 10 side and a second member 22 </ b> B connected to the furnace wall tube (boiler structure) 12 side. Of the first member 21B and the second member 22B, the second member 22B that is one member has a shape that receives the first member 21B that is the other member. Specifically, the second member 22B, which is a member on the receiving side, forms a receiving portion by arranging a pair of plate-like members 23 and 24 to face each other.

  The plate-like members 23 and 24 extend in the XZ-axis plane and face each other in parallel so as to be separated from each other in the Y-axis direction. The plate-like members 23 and 24 are configured in the same shape when viewed from the Y-axis direction. The plate-like members 23 and 24 have a trapezoidal shape in which the upper side 22a and the lower side 22b extend linearly in the X-axis direction when viewed from the Y-axis direction (state shown in FIG. 3A). The side 22c on the negative side of the X-axis of the plate-like members 23, 24 extends linearly in the vertical direction and is connected to the furnace wall tube 12.

  The side 22d on the X axis positive side of the plate-like members 23, 24 is inclined downward toward the X axis positive side. Although the inclination angle of the side 22d with respect to the lower side 22b is not particularly limited, it may be set to about 46 to 52 °. Moreover, the side 22d of the plate-like members 23 and 24 may be inclined to the heat exchanger 10 at the same angle as the inclined portion 11d. As described above, the side 22d of the plate-like members 23 and 24 and the inclined portion 11d of the heat exchanger 10 are inclined so as to face each other, thereby preventing contact between the heat exchanger 10 and the second member 22B. The

  A connecting member 26 that extends in the Y-axis direction and connects the plate-like members 23, 24 is formed at a corner between the side 22 d and the lower side 22 b of the plate-like members 23, 24. In the second member 22B on the lower side, the end portion 26a of the connecting member 26 supports the first member 21B on the heat exchanger 10 side. Thereby, the lower second member 22B can support the heat exchanger 10 in the vertical direction.

  Further, the second member 22B, which is a receiving member, has openings 27 and 28 for removing foreign matter. The plate-like members 23 and 24 are connected to each other at the connecting member 26 and the furnace wall tube 12, but are opened without being connected to each other at the upper side 22 a, the lower side 22 b, and the side side 22 d. . That is, the second member 22B has an opening 27 on the upper end side at the positions of the upper side 22a and the side side 22d. Further, the second member 22B has an opening 28 on the lower end side at the position of the lower side 22b. Therefore, when viewed from the top and bottom (the state shown in FIG. 3B), the second member 22B has an opening 27 in a region surrounded by the plate-like members 23 and 24, the connection member 26, and the furnace wall tube 12. , 28 penetrate vertically. As described above, since the second member 22B penetrates the openings 27 and 28 in the vertical direction, even if a foreign substance enters between the plate-like members 23 and 24, the second member 22B is dropped from the lower opening 28 downward. This can be removed.

  The first member 21 </ b> B that is a member on the insertion side is formed of a plate-like member 29. The plate-like member 29 extends on the XZ axis plane. The plate member 29 is inserted into a gap formed between the plate members 23 and 24 of the second member 22B. Thereby, the first member 21B is received by the second member 22B. The plate-like member 29 can be inserted into the gap between the plate-like members 23 and 24 from the opening 27 in the side 22d of the second member 22B from the X-axis positive side toward the X-axis direction negative side. The plate-like member 29 can be inserted into the gap between the plate-like members 23 and 24 from the upper side 22a and the side side 22d of the second member 22B from the opening 27 toward the lower side. The size of the gap between the plate members 23 and 24 is slightly larger than the thickness of the plate member 29.

  The plate-like member 29 has a substantially triangular shape when viewed from the Y-axis direction (state shown in FIG. 3A). The X-axis positive side 21c is inclined downward toward the X-axis positive side. The side 21c is connected to the inclined portion 11d of the heat exchanger 10. The lower side 21b of the plate-like member 29 extends linearly in the X axis direction. The X-axis negative side 21a is inclined upward toward the X-axis positive side. Accordingly, the first member 21B, which is a member on the insertion side, has a shape in which the tip end side on the X axis negative side is inclined with respect to the first insertion direction.

  The upper inclined portion 11a and the expansion / contraction permission member 20A and the lower inclination portion 11d and the expansion / contraction permission member 20B have a vertically symmetrical shape. Therefore, description of the upper inclined portion 11a and the expansion / contraction permission member 20A is omitted. The upper inclined portion 11 d is separated from the end portion 26 a of the connection member 26. Thereby, the first member 21A is movable in the vertical direction with respect to the second member 22B. Therefore, when the heat exchanger 10 expands and contracts in the vertical direction, the expansion and contraction is allowed.

  Next, the operation and effect of the heat exchanger support structure 100 according to the present embodiment will be described.

  Fig.4 (a) is a perspective view which shows the expansion-contraction permission member 20B before a boiler starting. As shown in FIG. 4A, the first member 21B on the insertion side is inserted into the second member 22B on the receiving side and is received. At this time, the tip end portion on the X-axis negative side of the first member 21B on the insertion side and the end portion on the X-axis negative side of the second member 22B on the receiving side (that is, the portion connected to the furnace wall tube 12). A predetermined amount of space is provided between. A predetermined amount of space is also provided between the heat exchange pipe 11 and the end on the X axis positive side of the receiving-side second member 22B connected to the structure of the boiler 1 (furnace wall pipe 12). It has been.

  FIG. 4B is a perspective view showing the expansion / contraction permission member 20B during boiler operation. As shown in FIG. 4 (b), the temperature of the heat exchange tube 11 increases due to exposure to a high-temperature fluid, and the heat exchange tube 11 expands in the X-axis direction. On the other hand, since the temperature of the boiler structure (furnace wall pipe 12) does not increase as compared with the heat exchanger 10 disposed in the flow path, the deformation amount due to expansion is smaller than that of the heat exchanger 10. As a result, the first member 21B on the insertion side moves relative to the negative side of the X axis with respect to the second member 22B on the receiving side. The first member 21B on the insertion side is inserted deeper into the second member 22B on the receiving side and is received. However, even during the expansion of the heat exchanger 10, the X-axis negative side tip portion of the insertion-side first member 21B and the X-axis negative side end portion of the receiving-side second member 22B A state in which an interval is provided between them is maintained. In addition, a state is also provided between the heat exchange pipe 11 and the end on the X axis positive side of the second member 22B on the receiving side connected to the structure of the boiler 1 (furnace wall pipe 12). Is maintained. That is, the heat exchanger 10 is allowed to expand and contract (here, expansion due to expansion). Thereby, since neither the first member 21 </ b> B on the heat exchanger 10 side nor the second member 22 </ b> B on the boiler structure side has a compressive force or the like associated with the expansion of the heat exchanger 10, the support member 50 is moved to. Can prevent damage.

  Further, as shown in FIG. 4B, as the fluid flows, foreign matter accumulates between the plate-like members 23 and 24 of the second member 22B (or foreign matter that has not fallen completely during the previous operation). May remain). At this time, the accumulated foreign matter may come into contact with the first member 21 </ b> B moving to the X-axis negative side as the heat exchanger 10 expands. The distal end portion of the first member 21B on the X axis negative side is inclined in the insertion direction (X axis direction). Accordingly, the foreign matter is scraped up to the inclined portion (side 21a) of the first member 21B as the first member 21B moves to the X-axis negative side. Thereby, when the foreign matter accumulated inside the second member 22B on the receiving side comes into contact with the first member 21B on the insertion side, a compressive force or the like acts on the first member 21B on the insertion side. Can be suppressed. As described above, damage to the support member 50 can be suppressed. In addition, it is a case where the foreign material is solidified and adhered to the plate-like members 23 and 24 of the second member 22B because the foreign material is scraped up to the inclined portion (side 21a) of the first member 21B. In addition, the foreign matter is removed from the plate-like members 23 and 24 by the scraping action of the first member 21B.

  FIG.4 (c) is a perspective view which shows the expansion-contraction permission member 20B at the time of a boiler stop. As shown in FIG.4 (c), the temperature of the heat exchanger 10 exposed to the high temperature fluid falls, and the heat exchange pipe 11 shrinks in the X-axis direction. On the other hand, since the temperature of the boiler structure (furnace wall pipe 12) does not become higher than that of the heat exchanger 10 arranged in the flow path, the amount of deformation due to contraction is smaller than that of the heat exchanger 10. As a result, the first member 21B on the insertion side moves relative to the positive side of the X axis with respect to the second member 22B on the reception side, and moves in a direction of being pulled out from the second member 22B on the reception side. To do. However, after the heat exchanger 10 contracts, the first member 21B on the insertion side is maintained in a state of being received by the second member 22B. As described above, the heat exchanger 10 is allowed to expand and contract (here, contraction due to contraction).

  Moreover, as shown in FIG.4 (c), even if the foreign material has accumulated between the plate-shaped members 23 and 24 of the 2nd member 22B during a driving | operation, the 1st member 21B is a heat exchanger. With the 10 contraction, it moves in the X axis positive side, that is, in the direction away from the foreign matter. Therefore, for example, it is avoided that the movement of the first member 21B to the X-axis positive side due to clogging of foreign matter is prevented, thereby preventing the compression force or the like from acting on the first member 21B. In addition, the foreign material falls from the opening 28 of the 2nd member 22B because the 1st member 21B which supported the foreign material by the side 21a moves to the X-axis positive side. As a result, the foreign matter is removed from the second member 22B. The effect described with reference to FIG. 4 can be obtained in the same manner with the upper expansion / contraction permission member 20A.

  As described above, in the heat exchanger support structure 100 according to the present embodiment, the support member 50 that supports the heat exchanger 10 in the flow path 6 includes the expansion / contraction permission members 20 </ b> A and 20 </ b> B that allow expansion and contraction of the heat exchanger 10. ing. Therefore, even if the heat exchanger 10 expands and contracts due to the influence of heat, the expansion and contraction permission members 20A and 20B of the support member 50 allow expansion and contraction of the heat exchanger, so that damage to the support member 50 is suppressed. Can do. As described above, damage to the support member 50 can be suppressed.

  In the heat exchanger support structure 100 according to the present embodiment, the expansion / contraction permission members 20A and 20B include the first members 21A and 21B connected to the heat exchanger 10 side and the second members connected to the boiler structure side. Members 22A and 22B. Of the first member 21A, 21B and the second member 22A, 22B, the second member 22A, 22B, which is one member, has a shape for receiving the first member 21A, 21B, which is the other member. It is. Thereby, the structure which accepts expansion-contraction can be easily formed by two member 21A, 22A and member 21B, 22B.

  In the heat exchanger support structure 100 according to the present embodiment, the second members 22A and 22B on the receiving side have openings 27 and 28 for removing foreign substances. As a result, even if foreign matter enters the second members 22A and 22B on the receiving side, the foreign matter can be removed from the openings 27 and 28. Therefore, it is difficult for foreign matter to collect in the second members 22A and 22B on the receiving side. Even if it accumulates, it can be easily removed.

  In the heat exchanger support structure 100 according to the present embodiment, the receiving-side second members 22A and 22B form a receiving portion by arranging a pair of plate-like members 23 and 24 facing each other. ing. In this manner, by forming the receiving portion with the plate-like members 23 and 24, the receiving portion can be easily formed on the receiving-side second members 22A and 22B while having a simple structure. Further, since the second members 22A and 22B are constituted by plate-like members 23 and 24, as shown in FIG. 3B, the second members 22A and 22B are moved upward, that is, from the direction in which the fluid flows. When viewed, the area (contact area with the fluid) can be reduced as much as possible. Therefore, it can suppress that the flow of a fluid is inhibited by 2nd member 22A, 22B. Moreover, when the 2nd members 22A and 22B are comprised with the plate-shaped members 23 and 24, the intensity | strength as a structure is fully securable, although it is a simple structure as mentioned above.

  In the heat exchanger support structure 100 according to the present embodiment, the first members 21 </ b> A and 21 </ b> B on the insertion side are formed by plate-like members 29. Thereby, the first members 21A and 21B on the insertion side can also have a simple structure. Further, since the first members 21A and 21B are constituted by the plate-like member 29, the first members 21A and 21B are viewed from above, that is, from the direction in which the fluid flows, as shown in FIG. Time area (contact area with the fluid) can be reduced as much as possible. Therefore, it can suppress that the flow of a fluid is inhibited by the 1st members 21A and 21B. Further, when the first members 21A and 21B are configured by the plate-shaped member 29, the strength as a structure can be sufficiently ensured while having a simple configuration as described above.

  In the heat exchanger support structure 100 according to the present embodiment, the first members 21A and 21B on the insertion side have a shape in which the tip end side is inclined with respect to the insertion direction. As a result, even if foreign matter is accumulated on the second members 22A and 22B on the receiving side, the front end side of the first members 21A and 21B on the insertion side is inclined with respect to the insertion direction. Can be scraped.

  In the heat exchanger support structure 100 according to the present embodiment, a set of the first member and the second member that are opposed in the horizontal direction is provided at a plurality of locations in the vertical direction (in the above-described embodiment, the members 21A and 22A). And the second member 22A, 22B on the receiving side can also receive the first member 21A, 22B on the insertion side in the vertical direction. Thereby, even when the heat exchanger 10 expands and contracts in the vertical direction, the second members 22A and 22B on the receiving side receive the first members 21A and 21B on the insertion side in the vertical direction. The expansion and contraction in the vertical direction can be allowed. In the present embodiment, as shown in FIG. 3A, the upper first member 21A is spaced downward from the end 26a of the connection member 26 of the second member 22A. Further, when the heat exchanger 10 expands, even if the first member 21A moves upward, the upper first member 21A is separated downward from the end portion 26a of the connection member 26 of the second member 22A. Maintained. Thereby, the expansion-contraction to the up-down direction of the heat exchanger 10 is accept | permitted.

  In the heat exchanger support structure 100 according to the present embodiment, in the first members 21A and 21B and the second members 22A and 22B facing in the horizontal direction, the second members 22A and 22B on the receiving side are on the insertion side. The first members 21A and 21B can be received in the facing direction in which the first members 21A and 21B and the second members 22A and 22B face each other. Thereby, even when the heat exchanger 10 expands and contracts in the opposite direction in the horizontal direction, the second members 22A and 22B on the receiving side receive the first members 21A and 21B on the insertion side in the opposite direction. Thus, expansion and contraction in the facing direction can be allowed.

  The present invention is not limited to the embodiment described above.

  For example, the structure of the expansion / contraction permission member of the support member is not limited to the above-described embodiment. For example, the configuration shown in FIG. 5 may be adopted. The expansion / contraction permission member 40B of the support member 50 shown in FIG. 5 includes a first member 41B on the insertion side and a second member 42B on the receiving side. The first member 41B includes a bar-shaped member 44 extending in the vertical direction, a connection member 43 that connects the bar-shaped member 44 and the inclined portion 11d of the heat exchange tube 11, and a retaining member that is attached to the lower end side of the bar-shaped member 44. 46. The second member 42B includes a plate 47 that protrudes from the furnace wall tube 12 to the X axis positive side. The plate 47 is a plate-like member spreading on the XY axis plane, and a long hole 48 through which the rod-like member 44 is inserted is formed. The long hole 48 is a through-hole penetrating the plate 47 in the vertical direction, and extends in the X-axis direction. The rod-shaped member 44 is supported at the upper end by the connection member 43 and extends downward to be inserted into the through hole of the plate 47. Further, a retaining member 46 is provided at the lower end of the rod-shaped member 44 below the plate 47. The width of the long hole 48 of the plate 47 in the Y-axis direction is substantially the same as the diameter of the rod-shaped member 44 (however, slight rattling is allowed). Therefore, the long hole 48 restricts the movement of the first member 41B in the Y-axis direction. On the other hand, the long hole 48 is set to a length that allows the rod-shaped member 44 to move in the X-axis direction accompanying expansion of the heat exchanger 10. As described above, the expansion / contraction permission member 40 </ b> B shown in FIG. 5 is also configured to allow expansion and contraction of the heat exchanger 10. The plate 47 has a larger contact area with the fluid when viewed from above compared to the second member 22B shown in FIG. In addition, you may provide the expansion-contraction permission member 40B shown in FIG.

  Moreover, you may employ | adopt the structure shown in FIG. The expansion / contraction permission member 60B of the support member 50 shown in FIG. 6 includes a first member 61B on the insertion side and a second member 62B on the reception side. The first member 61B includes a rod-like member 63 that extends in the X-axis direction. The second member 62B includes a bracket 64 that protrudes from the furnace wall tube 12 toward the X axis positive side. The bracket 64 is formed with an insertion hole 66 extending from the distal end surface on the X axis positive side to the X axis negative side. The rod-like member 63 is inserted into the insertion hole 66 of the bracket 64 at the tip end portion on the X-axis negative side. The inner diameter of the insertion hole 66 is substantially the same as the diameter of the rod-shaped member 63 (however, slight rattling is allowed). Accordingly, the insertion hole 66 restricts the movement of the first member 61B in the Y-axis direction and the vertical direction. The insertion hole 66 is set to a depth that allows the rod-shaped member 63 to move in the X-axis direction as the heat exchanger 10 expands. As described above, the expansion / contraction permission member 60 </ b> B shown in FIG. 6 is also configured to allow expansion and contraction of the heat exchanger 10. Note that the bracket 64 has a larger contact area with the fluid when viewed from above compared to the second member 22B shown in FIG. Further, the expansion / contraction permission member 60 </ b> B shown in FIG. 6 may take time and effort to absorb the displacement in the Y-axis direction and the vertical direction during installation with the clearance between the rod-shaped member 63 and the insertion hole 66. Note that the expansion / contraction permission member 60 </ b> B shown in FIG. 6 may be provided on the upper side of the heat exchanger 10.

  Moreover, you may provide the spring member and bellows-like member extended in an X-axis direction so that it may connect with the heat exchanger 10 and a boiler structure as an expansion-contraction permission member. These members can also allow expansion and contraction of the heat exchanger 10 in the X-axis direction.

  In the above-described embodiment and modification, the first member on the heat exchanger 10 side is the insertion side member, and the second member on the boiler structure side is the reception side member. Instead, the first member on the heat exchanger 10 side may be a receiving member, and the second member on the boiler structure side may be an insertion side member. In the above-described embodiment, two sets of the first member and the second member are provided in the vertical direction. However, one set may be provided, or three or more sets may be provided. Moreover, in the form shown in FIG. 3, the structure of the plate-shaped member which comprises a 1st member and a 2nd member is not specifically limited.

  DESCRIPTION OF SYMBOLS 1 ... Boiler, 2 ... Reactor, 6 ... Flow path, 10 ... Heat exchanger, 20A, 20B, 40B, 60B ... Expansion / contraction permission member, 21A, 21B, 41B, 61B ... First member, 22A, 22B, 42B , 62B ... second member, 23, 24 ... plate-like member, 27, 28 ... opening, 29 ... plate-like member, 100 ... heat exchanger support structure.

Claims (7)

A boiler heat exchanger support structure comprising: a reaction furnace; and a heat exchanger provided in a flow path of a fluid supplied from the reaction furnace,
A support member for supporting the heat exchanger in the flow path;
The support member includes an expansion / contraction permission member that allows expansion and contraction of the heat exchanger ,
The stretchable member is
A first member connected to the heat exchanger side;
A second member connected to the structure side of the boiler,
Of the first member and the second member, one member has a shape for receiving the other member,
The member on the insertion side of the first member and the second member has a shape extending along the insertion direction toward the member on the receiving side,
A structure in which the insertion-side member is in contact with the receiving-side member so as to face the receiving-side member when moving away from the receiving-side member in the inserting direction on the distal end side in the inserting direction. The heat exchanger support structure is not formed . The heat exchanger support structure according to claim 1 , wherein the receiving-side member of the first member and the second member has an opening for removing foreign matter. The receiving side member of said first member and said second member by a pair of plate-like members are arranged to face each other to form a receiving portion, according to claim 1 or 2 The heat exchanger support structure described in 1. The heat exchanger support structure according to any one of claims 1 to 3 , wherein the insertion-side member of the first member and the second member is formed of a plate-like member. The insertion side of the member of said first member and said second member has a tip end side has a shape which is inclined with respect to the insertion direction, to any one of claims 1 to 4 The heat exchanger support structure as described. A set of the first member and the second member facing in the horizontal direction is provided at a plurality of locations in the vertical direction,
The at least one pair of said first member and said second member, said receiving-side member is capable of receiving a member of the insertion side in the vertical direction, any one of claims 1 to 5 The heat exchanger support structure described in 1. In the first member and the second member facing in the horizontal direction, the receiving side member, receiving member of the insertion side, the opposite direction of the first member and the second member are opposed The heat exchanger support structure according to any one of claims 1 to 6 , which is possible.

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