Cooling device

Abstract

To suppress vibration of a cooling pipe generated during passage of fluid around the cooling pipe.SOLUTION: A cooling device includes: a shell having a shell body, an inlet nozzle;, and an outlet nozzle; a cooler which is provided inside the shell body and which can cool by circulating the fluid therein; and a baffle board for reducing a maximum flow speed of the fluid that flows into the cooler. The cooler includes: a plurality of cooling pipes; a first panel part provided at a position closer to the inlet nozzle with respect to the plurality of cooling pipes and facing the inlet nozzle; and a second panel part provided on an opposite side of the first panel part with the plurality of cooling pipes therebetween. The baffle board reduces a fluid speed of the fluid flowing into the plurality of cooling pipes at an inlet-side opening for supplying the fluid into the plurality of cooling pipes formed between the first panel part and the second panel part.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a cooling device.

Background Art

[0002] When a fluid is compressed by a compressor, the temperature of the compressed fluid rises. In a multistage compressor or the like, when the compressed fluid is fed into another compressor or the like in the subsequent stage, a cooling device for cooling the fluid may be used in order to increase the compression efficiency of the fluid in the subsequent-stage compressor. Examples of such a cooling device include a shell-and-tube type heat exchanger in which a tube bundle in which cooling tubes are gathered is arranged inside a shell.

[0003] For example, Patent Document 1 describes a heat exchanger in which a plate-like member is arranged in an exhaust gas duct that is a shell. In this heat exchanger, the plate-like member is arranged obliquely with respect to the tube axis of the heat transfer tube in at least one of a tube bundle portion or a cavity portion through which a fluid such as a gas flows. Thereby, the rumbling of the cavity is prevented in the entire flow velocity range of the gas.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in a shell-and-tube type heat exchanger, when the flow velocity of the fluid passing around the cooling tube is increased, the heat transfer coefficient is improved. On the other hand, if the flow velocity becomes too high, the vibration generated by the fluid when passing around the cooling tube and the natural vibration frequency of the cooling tube may approach each other, and the cooling tube may resonate and be damaged. Therefore, it is desired to suppress the vibration of the cooling tube generated when the fluid passes around the cooling tube.

[0006] The present disclosure has been made to solve the above problems, and an object thereof is to provide a cooling device capable of suppressing vibration of a cooling pipe that occurs when a fluid passes around the cooling pipe.

Means for Solving the Problems

[0007] In order to solve the above problems, a cooling device according to the present disclosure includes a shell body formed in a cylindrical shape extending around an axis, an inlet nozzle for feeding a fluid into the shell body, and an outlet nozzle disposed at a distance from the inlet nozzle in the axial direction in which the axis extends, and configured to send out the fluid inside the shell body to the outside, a cooler disposed inside the shell body and configured to be cooled by circulating the fluid flowing from the inlet nozzle toward the outlet nozzle inside, and a baffle plate for reducing the maximum flow velocity of the fluid flowing into the cooler. The cooler includes a plurality of cooling pipes extending in the axial direction and having a cooling medium flowing therethrough, a first plate portion disposed at a position close to the inlet nozzle and facing the inlet nozzle with respect to the plurality of cooling pipes, and a second plate portion disposed on the side opposite to the first plate portion with the plurality of cooling pipes interposed therebetween. The baffle plate is formed between the first plate portion and the second plate portion, and has an inlet-side opening for supplying the fluid to the plurality of cooling pipes, and configured to reduce the flow velocity of the fluid flowing into the plurality of cooling pipes.

Effects of the Invention

[0008] According to the cooling device of the present disclosure, vibration of the cooling pipe that occurs when a fluid passes around the cooling pipe can be suppressed.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0010] Hereinafter, with reference to the accompanying drawings, embodiments for implementing the cooling device 1 according to the present disclosure will be described. However, the present disclosure is not limited to only this embodiment.

[0011] (Configuration of Compressor System) As shown in FIG. 1, the cooling device 1 in this embodiment is provided in a compressor system 8. The compressor system 8 includes a plurality of compressors 9 provided in series and the cooling device 1. The plurality of compressors 9 are connected in series. In this embodiment, for example, two compressors 9 are provided. Note that the number of compressors 9 provided in the compressor system 8 may be three or more.

[0012] The fluid G to be compressed in the compressor system 8 is compressed by the front-stage compressor 9A and then sent to the rear-stage compressor 9B. The fluid G compressed by the front-stage compressor 9A is further compressed by the rear-stage compressor 9B. The cooling device 1 is disposed between the front-stage compressor 9A and the rear-stage compressor 9B. The cooling device 1 is connected to the outlet of the front-stage compressor 9A via a front-stage connection pipe 10A. The cooling device 1 is connected to the inlet of the rear-stage compressor 9B via a rear-stage connection pipe 10B.

[0013] (Configuration of Cooling Device) The cooling device 1 cools the gaseous fluid G compressed by the compressor 9A in the previous stage. The cooling device 1 reduces the power required for driving the compressor 9B in the subsequent stage by cooling the fluid G during the compression process. In the present embodiment, the fluid G cooled by the cooling device 1 is, for example, carbon dioxide (CO2) gas containing moisture. The fluid G cooled by the cooling device 1 is not limited to carbon dioxide gas, and may be other gases such as air or nitrogen. The cooling device 1 is a shell-and-tube type heat exchanger. As shown in FIGS. 2 to 4, the cooling device 1 of the present embodiment mainly includes a shell 2, a cooler 3, a partition member 5, a perforated plate 4, a demister 6, and a baffle plate 7.

[0014] (Configuration of the shell) As shown in FIG. 2, the shell 2 has a hollow structure. The shell 2 includes a shell body 21, an inlet nozzle 24, and an outlet nozzle 25. The shell body 21 is formed in a bottomed cylindrical shape extending around the axis O. The shell body 21 is arranged so that the axis O coincides with the horizontal direction. Note that the shell 2 preferably has the largest possible inner diameter in order to suppress the uneven flow of the fluid G inside it.

[0015] The inlet nozzle 24 and the outlet nozzle 25 are integrally connected to the shell body 21. The inlet nozzle 24 and the outlet nozzle 25 are arranged at intervals in the axial direction Da in which the axis O extends. The inlet nozzle 24 and the outlet nozzle 25 are arranged above the shell body 21 in the vertical direction Dv in a horizontal state. Further, the inlet nozzle 24 and the outlet nozzle 25 are formed in a cylindrical shape extending upward in the vertical direction Dv from the upper part of the shell body 21. The inlet nozzle 24 is connected to the previous-stage connecting pipe 10A. The outlet nozzle 25 is connected to the subsequent-stage connecting pipe 10B. The lower ends of the inlet nozzle 24 and the outlet nozzle 25 open on the inner peripheral surface of the shell body 21 so as to communicate with the inside of the shell body 21.

[0016] In this embodiment, the side where the inlet nozzle 24 is arranged with respect to the outlet nozzle 25 is the first side Da1 in the axial direction Da. Conversely, the side where the outlet nozzle 25 is arranged with respect to the inlet nozzle 24 is the second side Da2 in the axial direction Da.

[0017] (Configuration of the cooler) As shown in FIG. 3, the cooler 3 is arranged inside the shell body 21. The cooler 3 can be cooled by allowing the fluid G flowing from the inlet nozzle 24 toward the outlet nozzle 25 to flow inside. The cooler 3 of this embodiment includes, as shown in FIG. 4, a tube bundle 31, a first plate portion 32, and a second plate portion 33. As a whole, the cooler 3 has a rectangular parallelepiped shape extending in the axial direction Da.

[0018] The tube bundle 31 includes a plurality of cooling tubes 35 and a support plate 37. Each cooling tube 35 extends in the axial direction Da inside the shell body 21. The plurality of cooling tubes 35 are arranged at intervals in the vertical direction Dv and the width direction Dw (the direction intersecting the axis O in this embodiment) orthogonal to the axial direction Da. The plurality of cooling tubes 35 are arranged in a so-called staggered pattern such that the installation heights in the vertical direction Dv are different from each other between adjacent cooling tubes 35 in the width direction Dw. That is, when viewed from the axial direction Da, the center lines of the three closest cooling tubes 35 are arranged to form a triangle (equilateral triangle or isosceles triangle). The plurality of cooling tubes 35 are arranged at a pitch of about 20 mm, for example, apart from each other. The cooling tube 35 is folded back in a U shape on the first side Da1 in the axial direction Da inside the shell body 21. Each cooling tube 35 has a diameter of 30 mm or less, for example. In each cooling tube 35, for example, water is supplied as a cooling medium. In each cooling tube 35, the water as the cooling medium flows from the first side Da1 in the axial direction Da toward the second side Da2, and the flow direction is changed so as to turn back at the end of the second side Da2 in the axial direction Da, and then flows from the second side Da2 in the axial direction Da toward the first side Da1.

[0019] The plurality of cooling pipes 35 are supported by a plurality of support plates 37 at intervals in the axial direction Da. The support plates 37 are formed in a flat plate shape having a surface orthogonal to the axial direction Da.

[0020] The first plate portion 32 is disposed above the tube bundle 31 in the vertical direction Dv. The first plate portion 32 is disposed at a position close to the inlet nozzle 24 with respect to the plurality of cooling pipes 35. Thereby, the first plate portion 32 is disposed at a position facing the inlet nozzle 24 and the outlet nozzle 25 with respect to the tube bundle 31. The first plate portion 32 is flat and extends along a plane (horizontal plane) orthogonal to the vertical direction Dv. The first plate portion 32 is formed in a rectangular shape when viewed from the vertical direction Dv orthogonal to the axial direction Da. The first plate portion 32 is disposed so as to cover the entire tube bundle 31 from above in the vertical direction Dv.

[0021] The second plate portion 33 is disposed on the opposite side of the first plate portion 32 with the plurality of cooling pipes 35 interposed therebetween. That is, the second plate portion 33 is disposed below the tube bundle 31 in the vertical direction Dv. The second plate portion 33 is flat and extends along a plane (horizontal plane) orthogonal to the vertical direction Dv. The second plate portion 33 is formed in a rectangular shape when viewed from the vertical direction Dv. The second plate portion 33 is disposed so as to cover the entire tube bundle 31 from below in the vertical direction Dv.

[0022] An inlet side opening 3i and an outlet side opening 3o are formed between the first plate portion 32 and the second plate portion 33 disposed above and below in the vertical direction Dv. The inlet side opening 3i supplies the fluid G to the plurality of cooling pipes 35. The outlet side opening 3o is formed on the opposite side of the inlet side opening 3i via the plurality of cooling pipes 35 in the width direction Dw. The outlet side opening 3o discharges the fluid G after contacting the plurality of cooling pipes 35 to the outside of the cooler 3.

[0023] In the cooler 3, the fluid G passes between the first plate portion 32 and the second plate portion 33 arranged above and below in the vertical direction Dv, from the inlet-side opening 3i to the outlet-side opening 3o, and contacts the cooling tubes 35 of the tube bundle 31. Here, the fluid G flows between the first plate portion 32 and the second plate portion 33 along the width direction Dw orthogonal to the axial direction Da. That is, the width direction Dw orthogonal to the axial direction Da coincides with the flow direction of the fluid G in the cooler 3. In the following description, in the width direction Dw, the side where the fluid G flows into the cooler 3 and on which the inlet-side opening 3i is formed with respect to the tube bundle 31 is referred to as the inlet side (one side) Dw1. Also, the side where the fluid G flows out of the cooler 3 and on which the outlet-side opening 3o is formed with respect to the tube bundle 31 is referred to as the outlet side (the other side) Dw2. Therefore, between the first plate portion 32 and the second plate portion 33, it flows from the inlet side Dw1 to the outlet side Dw2 in the width direction Dw.

[0024] The end portion of the first plate portion 32 on the inlet side Dw1 in the width direction Dw is arranged with a gap from the shell body 21. The end portion of the first plate portion 32 on the outlet side Dw2 in the width direction Dw is arranged with a gap from the shell body 21.

[0025] Similarly, the end portion of the second plate portion 33 on the inlet side Dw1 in the width direction Dw is arranged with a gap from the shell body 21. The end portion of the second plate portion 33 on the outlet side Dw2 in the width direction Dw is arranged with a gap from the shell body 21.

[0026] (Configuration of the extended portion) In addition, the cooler 3 further includes an extension portion 34. The extension portion 34 extends from the end of the second plate portion 33 toward the shell body 21. The extension portion 34 of the present embodiment has a flat plate shape. The extension portion 34 extends from the end of the second plate portion 33 on the inlet side Dw1 in the width direction Dw toward the inner peripheral surface of the shell body 21. The extension portion 34 extends while being inclined so as to face the inlet side Dw1 in the width direction Dw as it goes downward in the vertical direction Dv from the end of the second plate portion 33. The tip of the extension portion 34 is in contact with the lower inner peripheral surface of the shell body 21. Thereby, the extension portion 34 is connected to the second plate portion 33 and the shell body 21, and partitions the space inside the shell body 21. Specifically, the extension portion 34 partitions the second plate portion 33 so that the fluid G does not flow into the lower part in the vertical direction Dv. Therefore, the fluid G that has reached the extension portion 34 is not directed downward in the vertical direction Dv with respect to the second plate portion 33 and is guided to the inlet side opening 3i.

[0027] (Configuration of partition member) As shown in FIGS. 3 and 4, the partition member 5 is fixed to the first plate portion 32. The partition member 5 extends on the first plate portion 32. The partition member 5 partitions the space between the cooler 3 and the inner peripheral surface of the shell body 21. Specifically, the partition member 5 partitions the space between the cooler 3 and the inner peripheral surface of the shell body 21 into a space communicating with the inlet nozzle 24 and a space communicating with the outlet nozzle 25.

[0028] (Configuration of perforated plate) The perforated plate 4 is disposed so as to cover the inlet side opening 3i. The perforated plate 4 is disposed facing the inlet side opening 3i located on the inlet side Dw1 in the width direction Dw of the cooler 3. That is, the perforated plate 4 covers the opening through which the fluid G flows into the cooler 3. The perforated plate 4 is disposed so as to cover the tube bundle 31 from the inlet side Dw1 in the width direction Dw. The perforated plate 4 is disposed between the first plate portion 32 and the second plate portion 33 in the vertical direction Dv. The perforated plate 4 is formed in a rectangular shape when viewed from the width direction Dw. The perforated plate 4 has a plurality of holes 41 formed therein as a whole.

[0029] (Configuration of demister) The demister 6 is arranged to cover the outlet-side opening 3o. The demister 6 collects the liquid component in which a part of the fluid G has condensed by the flow of the fluid G in contact with the plurality of cooling pipes 35. The demister 6 is arranged facing the outlet-side opening 3o located on the outlet side Dw2 in the width direction Dw of the cooler 3. That is, the demister 6 covers the opening through which the fluid G flows out in the cooler 3. The demister 6 is arranged to cover the tube bundle 31 from the outlet side Dw2 in the width direction Dw. The demister 6 is arranged between the first plate portion 32 and the second plate portion 33 in the vertical direction Dv.

[0030] (Configuration of the baffle plate) The baffle plate 7 reduces the maximum flow velocity of the fluid G flowing into the cooler 3. The baffle plate 7 reduces the flow velocity of the fluid G flowing toward the plurality of cooling pipes 35 at the inlet-side opening 3i. The baffle plate 7 reduces the flow velocity of the fluid G colliding with the plurality of cooling pipes 35 to less than half of the maximum flow velocity of the fluid G flowing in from the inlet-side opening 3i. The baffle plate 7 is a plate-shaped member extending in the vertical direction Dv. The baffle plate 7 is arranged to block a part of the inlet-side opening 3i at a position closer to the second plate portion 33 than the first plate portion 32. The baffle plate 7 is arranged adjacent to the inlet side Dw1 in the width direction Dw with respect to the perforated plate 4. The baffle plate 7 blocks a part of the plurality of holes 41 of the perforated plate 4. When viewed from the axial direction Da, the baffle plate 7 extends upward in the vertical direction Dv from the second plate portion 33 so that the positions in the vertical direction Dv of about 1 to 3 rows of cooling pipes 35 overlap with the second plate portion 33. Note that the baffle plate 7 may be installed behind the perforated plate 4. That is, the baffle plate 7 may be arranged between the perforated plate 4 and the cooling pipes 35. Furthermore, the baffle plate 7 is not limited to being an independent member from the perforated plate 4. For example, the baffle plate 7 may be integrally formed with the perforated plate 4. In that case, instead of blocking the holes 41 of the perforated plate 4 with the baffle plate 7, a structure may be adopted in which the holes 41 of the perforated plate 4 are not opened in the region to be blocked.

[0031] (Explanation of the flow of the fluid in the shell) As shown in FIGS. 3 and 4, the fluid G flowing into the shell body 21 from the inlet nozzle 24 collides with the first plate portion 32 while being guided by the partition member 5. Then, it flows into the inlet side opening 3i by going around the end portion of the first plate portion 32. A part of the fluid G that has reached the inlet side opening 3i flows through the holes 41 of the perforated plate 4 and into the space between the first plate portion 32 and the second plate portion 33. The fluid G that has passed through the holes 41 of the perforated plate 4 flows toward the outlet side Dw2 in the width direction Dw while colliding with the plurality of cooling pipes 35. Then, the fluid G that has passed between the first plate portion 32 and the second plate portion 33 while colliding with the plurality of cooling pipes 35 reaches the demister 6, and the liquid component is collected. The fluid G that has passed through the demister 6 is discharged from the outlet nozzle 25 to the outside of the shell body 21.

[0032] Also, a part of the fluid G that has reached the inlet side opening 3i flows along the perforated plate 4 while increasing its flow velocity downward in the vertical direction Dv and reaches the extending portion 34. The fluid G that has reached the extending portion 34 changes its flow direction so as to bounce back in contact with the extending portion 34 and heads upward in the vertical direction Dv. Then, the fluid G attempts to flow through the hole 41 below the extending portion 34 in the vertical direction Dv of the perforated plate 4 close to the extending portion 34 and into the space between the first plate portion 32 and the second plate portion 33. Here, due to the arrangement of the baffle plate 7, the fluid G that contacts the extending portion 34 and heads upward in the vertical direction Dv flows around the baffle plate 7 from above in the vertical direction Dv and into the hole 41 of the perforated plate 4.

[0033] (Function and Effect) In the compressor system 8 having the above configuration, the baffle plate 7 reduces the flow velocity of the fluid G flowing toward the plurality of cooling pipes 35 at the inlet side opening 3i. Therefore, the maximum flow velocity of the fluid G is suppressed before passing between the plurality of cooling pipes 35. As a result, the flow velocity of the fluid G when passing around the cooling pipes 35 is also suppressed. Thereby, the vibration of the cooling pipes 35 generated when the fluid G passes around the cooling pipes 35 can be suppressed.

[0034] Further, the baffle plate 7, which is a plate-shaped member, is disposed so as to block a part of the inlet-side opening 3i at a position closer to the second plate portion 33 than to the first plate portion 32. That is, the flow of the fluid G flowing in from the inlet-side opening 3i at a position far from the inlet nozzle 24 is blocked by the baffle plate 7. The fluid G flowing into the inside of the shell body 21 from the inlet nozzle 24 increases in flow velocity as it gets farther from the inlet nozzle 24. That is, when viewed from the axial direction Da, the flow velocity is particularly high at a position closer to the second plate portion 33 than to the first plate portion 32 in the inlet-side opening 3i. Therefore, the flow velocity of the fluid G with a high flow velocity can be effectively reduced. Further, since the baffle plate 7 is formed in a plate shape, the flow of the fluid G can be blocked with a simple structure, and the effect of reducing the flow velocity can be easily obtained. Further, since the baffle plate 7 blocks only a part of the inlet-side opening 3i, it is possible to suppress a large reduction in the flow rate of the fluid G flowing into the plurality of cooling pipes 35. Therefore, a decrease in the cooling performance of the cooler 3 can be suppressed. In this way, the baffle plate 7 can suppress the maximum flow velocity of the fluid G that greatly contributes to the generation of vibration in the cooling pipes 35 without degrading the cooling performance of the cooler 3.

[0035] Further, the fluid G that has reached the extending portion 34 has its flow direction changed, and after flowing upward in the vertical direction Dv, it flows into the inlet-side opening 3i. Therefore, the flow velocity becomes higher than that of the fluid G flowing directly into the inlet-side opening 3i. That is, the fluid G flowing into the inlet-side opening 3i via the extending portion 34 has the highest flow velocity. However, in the present embodiment, the baffle plate 7 extends from the connection position of the extending portion 34 and the second plate portion 33 and blocks a part of the inlet-side opening 3i. Therefore, the fluid G that has reached the extending portion 34 cannot flow directly into the inlet-side opening 3i without being obstructed by the extending portion 34, and the inflow is blocked by the baffle plate 7. Therefore, the flow velocity of the fluid G with the highest flow velocity can be effectively reduced. Thereby, the baffle plate 7 can effectively suppress the maximum flow velocity of the fluid G that greatly contributes to the generation of vibration in the cooling pipes 35.

[0036] Moreover, the baffle plate 7 is arranged so as to block a part of the holes 41 of the perforated plate 4. Since the perforated plate 4 itself having a plurality of holes 41 has a flow rectifying effect, the flow velocity of the fluid G flowing into the inlet side opening 3i can be reduced as a whole. In addition to such a perforated plate 4, by arranging the baffle plate 7 that blocks a part of the holes 41 of the perforated plate 4, a faster flow velocity can be suppressed with high accuracy.

[0037] (Other Embodiments) As described above, the embodiments of the present disclosure have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present disclosure are also included.

[0038] Note that the configuration of the cooling device 1 is not limited to the configuration of the above embodiment. For example, the cooling device 1 may have a structure other than the shell 2, the cooler 3, the partition member 5, the perforated plate 4, the demister 6, and the baffle plate 7. Further, the cooling device 1 may not have the partition member 5, the perforated plate 4, and the demister 6. Also, the shell 2, the partition member 5, the perforated plate 4, and the demister 6 may have a structure other than the above embodiment. Therefore, for example, the inlet nozzle 24 may be connected to the shell body 21 in the width direction Dw.

[0039] Moreover, the arrangement of the plurality of cooling pipes 35 constituting the tube bundle 31 is not limited to the arrangement of the above embodiment. For example, the plurality of cooling pipes 35 are not limited to being arranged in a staggered pattern as in this embodiment, and may be arranged in a grid pattern.

[0040] <Appendix> The cooling device 1 described in the embodiment is understood as follows, for example.

[0041] (1) The cooling device 1 according to the first aspect includes a shell body 21 formed in a cylindrical shape extending around an axis O, an inlet nozzle 24 for feeding a fluid G into the shell body 21, and an outlet nozzle 25 disposed at a distance from the inlet nozzle 24 in the axial direction Da in which the axis O extends and for sending out the fluid G inside the shell body 21 to the outside. The cooling device 1 also includes a shell 2 having the above components, a cooler 3 disposed inside the shell body 21 and capable of being cooled by circulating the fluid G flowing from the inlet nozzle 24 toward the outlet nozzle 25 inside, and a baffle plate 7 for reducing the maximum flow velocity of the fluid G flowing into the cooler 3. The cooler 3 includes a plurality of cooling tubes 35 extending in the axial direction Da and through which a cooling medium flows inside, a first plate portion 32 disposed at a position close to the inlet nozzle 24 and facing the inlet nozzle 24 with respect to the plurality of cooling tubes 35, and a second plate portion 33 disposed on the side opposite to the first plate portion 32 with the plurality of cooling tubes 35 interposed therebetween. The baffle plate 7 is formed between the first plate portion 32 and the second plate portion 33 and reduces the flow velocity of the fluid G flowing into the plurality of cooling tubes 35 through an inlet-side opening 3i for supplying the fluid G to the plurality of cooling tubes 35.

[0042] As a result, the baffle plate 7 suppresses the maximum flow velocity of the fluid G before it passes between the plurality of cooling tubes 35. Consequently, the flow velocity of the fluid G when it passes around the cooling tubes 35 is also suppressed. Thereby, the vibration of the cooling tubes 35 generated when the fluid G passes around the cooling tubes 35 can be suppressed.

[0043] (2) The cooling device 1 according to the second aspect is the cooling device 1 of (1), wherein the baffle plate 7 is a plate-shaped member and is disposed so as to block a part of the inlet-side opening 3i at a position closer to the second plate portion 33 than to the first plate portion 32.

[0044] As a result, the flow of the fluid G flowing in from the inlet-side opening 3i is blocked by the baffle plate 7. The baffle plate 7 blocks a part of the inlet-side opening 3i at a position close to the second plate portion 33 with respect to the first plate portion 32 where the flow velocity is high. Therefore, the flow velocity of the fluid G with a high flow velocity can be effectively reduced. Further, since the baffle plate 7 is formed in a plate shape, the flow of the fluid G can be blocked with a simple structure, and the effect of reducing the flow velocity can be easily obtained. Further, since the baffle plate 7 blocks only a part of the inlet-side opening 3i, it is possible to suppress a large reduction in the flow rate of the fluid G flowing into the plurality of cooling pipes 35. Therefore, a decrease in the cooling performance of the cooler 3 can be suppressed. In this way, the baffle plate 7 can suppress the maximum flow velocity of the fluid G that largely contributes to the generation of vibration in the cooling pipe 35 without degrading the cooling performance of the cooler 3.

[0045] (3) The cooling device 1 according to the third aspect is the cooling device 1 according to (1) or (2), wherein the cooler 3 has an extension portion 34 that extends from an end portion of the second plate portion 33 toward the shell body 21 and guides the fluid G to the inlet-side opening 3i, and the baffle plate 7 extends from a connection position of the extension portion 34 and the second plate portion 33 and blocks a part of the inlet-side opening 3i.

[0046] As a result, the fluid G that has reached the extension portion 34 cannot flow directly into the inlet-side opening 3i without being obstructed by the extension portion 34, and the inflow is blocked by the baffle plate 7. Therefore, the flow velocity of the fluid G with the highest flow velocity can be effectively reduced. Thereby, the baffle plate 7 can effectively suppress the maximum flow velocity of the fluid G that largely contributes to the generation of vibration in the cooling pipe 35.

[0047] (4) The cooling device 1 according to the fourth aspect is the cooling device 1 according to any one of (1) to (3), further comprising a porous plate 4 disposed so as to cover the inlet-side opening 3i and having a plurality of holes 41, wherein the baffle plate 7 blocks a part of the plurality of holes 41 of the porous plate 4.

[0048] As a result, since the porous plate 4 itself having a plurality of holes 41 has a flow rectifying effect, the flow velocity of the fluid G flowing into the inlet side opening 3i can be reduced as a whole. In addition to such a porous plate 4, by disposing a baffle plate 7 that closes a part of the holes 41 of the porous plate 4, a faster flow velocity can be suppressed with high accuracy.

Explanation of Signs

[0049] 8…Compressor system 9…Compressor 9A…Front-stage compressor 9B…Rear-stage compressor G…Fluid 10A…Front-stage connecting pipe 10B…Rear-stage connecting pipe 1…Cooling device 2…Shell 21…Shell body 24…Inlet nozzle 25…Outlet nozzle O…Axis 3…Cooler 31…Tube bundle 35…Cooling tube 37…Support plate 32…First plate portion 33…Second plate portion 3i…Inlet side opening 3o…Outlet side opening 34…Extension portion 5…Partition member 4…Porous plate 41…Hole 6…Demister 7…Baffle plate Da…Axial direction Da1…First side Da2…Second side Dw…Width direction Dw1…Inlet side Dw2…Outlet side Dv…Vertical direction

Claims

1. A shell including a shell body formed in a cylindrical shape extending around an axis, an inlet nozzle for feeding a fluid into the interior of the shell body, and an outlet nozzle disposed axially away from the inlet nozzle in the direction of extension of the axis for discharging the fluid inside the shell body to the outside; A cooler disposed inside the shell body and capable of being cooled by circulating the fluid flowing from the inlet nozzle toward the outlet nozzle inside; A baffle plate for reducing the maximum flow velocity of the fluid flowing into the cooler; The cooler includes: A plurality of cooling tubes extending in the axial direction with a cooling medium flowing inside; A first plate portion disposed at a position close to the inlet nozzle and facing the inlet nozzle with respect to the plurality of cooling tubes; A second plate portion disposed on the side opposite to the first plate portion with the plurality of cooling tubes interposed therebetween; The baffle plate is formed between the first plate portion and the second plate portion, and is a cooling device having an inlet-side opening for supplying the fluid to the plurality of cooling tubes and reducing the flow velocity of the fluid flowing into the plurality of cooling tubes.

2. The cooling device according to Claim 1, wherein the baffle plate is a plate-shaped member and is disposed so as to block a part of the inlet-side opening at a position close to the second plate portion with respect to the first plate portion.

3. The cooler has an extension portion extending from an end of the second plate portion toward the shell body for guiding the fluid to the inlet-side opening; The cooling device according to Claim 2, wherein the baffle plate extends from a connection position of the extension portion and the second plate portion and blocks a part of the inlet-side opening.

4. Further comprising a perforated plate disposed so as to cover the inlet-side opening and having a plurality of holes; The cooling device according to Claim 1 or 2, wherein the baffle plate blocks a part of the plurality of holes of the perforated plate.

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