Cooling device

Abstract

This cooling device comprises: a shell; a cooler that is disposed inside a shell body and can be cooled by allowing a fluid to flow thereinside; and a baffle plate that reduces the maximum flow rate of the fluid flowing into the cooler. The cooler has, with respect to a plurality of cooling pipes, a first plate part that is disposed at a position close to an inlet nozzle and that faces the inlet nozzle, and a second plate part that is disposed on the side opposite to the first plate part across the cooling pipes. The baffle plate is formed between the first plate part and the second plate part, and reduces the flow rate of the fluid flowing toward the cooling pipes at an inlet side opening for supplying the fluid to the cooling pipes.

Description

cooling device

[0001] This application claims priority to Japanese Patent Application No. 2023-220948, filed on December 27, 2023, the contents of which are incorporated herein by reference.

[0002] When a fluid is compressed in a compressor, the temperature of the compressed fluid increases. In a multi-stage compressor, when the compressed fluid is sent to another compressor in a subsequent stage, a cooling device is sometimes used to cool the fluid in order to increase the compression efficiency of the fluid in the subsequent compressor. An example of such a cooling device is a shell-and-tube heat exchanger in which a group of cooling tubes is arranged inside a shell.

[0003] For example, Patent Document 1 describes a heat exchanger in which a plate-like member is arranged inside an exhaust gas duct, which is a shell. In this heat exchanger, the plate-like member is arranged at an angle with respect to the axis of the heat transfer tube in at least one of the tube bank section and the cavity section, through which a fluid such as gas flows. This prevents cavity humming across the entire gas flow velocity range.

[0004] Japanese Patent Application Publication No. 9-14884

[0005] In shell-and-tube heat exchangers, increasing the flow velocity of the fluid passing around the cooling pipes improves the heat transfer coefficient. However, if the flow velocity is too high, the vibrations caused by the fluid passing around the cooling pipes will approach the natural frequency of the cooling pipes, which may cause resonance and damage to the cooling pipes. Therefore, it is desirable to suppress the vibrations of the cooling pipes that occur when the fluid passes around them.

[0006] The present disclosure provides a cooling device that can suppress vibration of a cooling pipe that occurs when a fluid passes around the cooling pipe.

[0007] a first plate portion that is disposed near the inlet nozzle relative to the cooling pipes and faces the inlet nozzle, and a second plate portion that is disposed on the opposite side of the first plate portion with the cooling pipes interposed therebetween, and the baffle plate is formed between the first plate portion and the second plate portion, and reduces the flow velocity of the fluid flowing toward the cooling pipes at an inlet-side opening that supplies the fluid to the cooling pipes.

[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.

[0009] It is a diagram showing a schematic configuration of a compressor system including a cooling device according to an embodiment. It is a perspective view showing an appearance of the cooling device according to an embodiment. It is a perspective view showing a cooler provided in the cooling device according to an embodiment. It is a cross-sectional view of a main part showing the inside of a shell according to an embodiment.

[0010] Hereinafter, an embodiment of a cooling device 1 according to the present disclosure will be described with reference to the accompanying drawings. However, the present disclosure is not limited to 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 a front-stage compressor 9A and then sent to a 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 connecting pipe 10A. The cooling device 1 is connected to the inlet of the rear-stage compressor 9B via a rear-stage connecting pipe 10B.

[0013] (Configuration of the Cooling Device) The cooling device 1 cools a gaseous fluid G compressed by a compressor 9A in a preceding stage. The cooling device 1 reduces the power required to drive a compressor 9B in a subsequent stage by intermediately cooling the fluid G during the compression process. In this 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 heat exchanger. As shown in FIGS. 2 to 4 , the cooling device 1 of this 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] (Shell Configuration) 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 the shape of a cylinder with a bottom that extends about an axis O. The shell body 21 is disposed so that the axis O coincides with the horizontal direction. Note that it is preferable that the inner diameter of the shell 2 be as large as possible in order to suppress drift of the fluid G inside the shell 2.

[0015] An inlet nozzle 24 and an outlet nozzle 25 are integrally connected to the shell body 21. The inlet nozzle 24 and the outlet nozzle 25 are arranged at an interval in the axial direction Da, along which the axis O extends. The inlet nozzle 24 and the outlet nozzle 25 are arranged above the horizontally arranged shell body 21 in the vertical direction Dv. The inlet nozzle 24 and the outlet nozzle 25 are formed in a cylindrical shape extending upward in the vertical direction Dv from the top of the shell body 21. The inlet nozzle 24 is connected to the upstream connecting pipe 10A. The outlet nozzle 25 is connected to the downstream connecting pipe 10B. The lower ends of the inlet nozzle 24 and the outlet nozzle 25 open at the inner circumferential surface of the shell body 21 so as to communicate with the interior of the shell body 21.

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

[0017] (Configuration of Cooler) As shown in Fig. 3 , the cooler 3 is disposed inside the shell main body 21. The cooler 3 is capable of cooling by circulating the fluid G flowing from the inlet nozzle 24 toward the outlet nozzle 25 inside the cooler 3. As shown in Fig. 4 , the cooler 3 of this embodiment includes a tube group 31, a first plate portion 32, and a second plate portion 33. The cooler 3 as a whole has a rectangular parallelepiped shape extending in the axial direction Da.

[0018] The tube group 31 includes a plurality of cooling pipes 35 and a support plate 37. Each cooling pipe 35 extends in the axial direction Da within the shell main body 21. The cooling pipes 35 are arranged at intervals in the vertical direction Dv and in the width direction Dw (a direction intersecting the axis O in this embodiment), which is perpendicular to the axial direction Da. The cooling pipes 35 are arranged in a staggered pattern so that adjacent cooling pipes 35 in the width direction Dw have different installation heights in the vertical direction Dv. In other words, the cooling pipes 35 are arranged such that the center lines of the three nearest cooling pipes 35 form a triangle (an equilateral triangle or an isosceles triangle) when viewed from the axial direction Da. The cooling pipes 35 are spaced apart from one another at a pitch of, for example, about 20 mm. The cooling pipes 35 are folded back in a U-shape on the first side Da1 in the axial direction Da within the shell main body 21. Each cooling pipe 35 has a diameter of, for example, 30 mm or less. A cooling medium, for example, water, is supplied into each cooling pipe 35. In each cooling pipe 35, the water as the cooling medium flows from the first side Da1 to the second side Da2 in the axial direction Da, changes its flow direction 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 to the first side Da1 in the axial direction Da.

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

[0020] The first plate portion 32 is disposed above the tube group 31 in the vertical direction Dv. The first plate portion 32 is disposed in a position close to the inlet nozzle 24 relative to the plurality of cooling pipes 35. As a result, the first plate portion 32 is disposed in a position facing the inlet nozzle 24 and the outlet nozzle 25 relative to the tube group 31. The first plate portion 32 is flat and extends along a plane (horizontal plane) perpendicular to the vertical direction Dv. The first plate portion 32 is formed in a rectangular shape when viewed from the vertical direction Dv perpendicular to the axial direction Da. The first plate portion 32 is disposed so as to cover the entire tube group 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 cooling pipes 35 interposed therebetween. In other words, the second plate portion 33 is disposed below the tube group 31 in the vertical direction Dv. The second plate portion 33 is flat and extends along a plane (horizontal plane) perpendicular 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 group 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, which are arranged 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 in the width direction Dw, across the plurality of cooling pipes 35. The outlet-side opening 3o discharges the fluid G to the outside of the cooler 3 after it has come into contact with the plurality of cooling pipes 35.

[0023] In the cooler 3, the fluid G passes between the first plate portion 32 and the second plate portion 33, which are arranged above and below in the vertical direction Dv, from the inlet-side opening 3i to the outlet-side opening 3o, and comes into contact with the cooling tubes 35 of the tube group 31. Here, the fluid G flows between the first plate portion 32 and the second plate portion 33 along a width direction Dw perpendicular to the axial direction Da. In other words, the width direction Dw perpendicular 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 where the inlet-side opening 3i is formed for the tube group 31 is referred to as the inlet side (one side) Dw1. Furthermore, the side where the fluid G flows out of the cooler 3 and where the outlet-side opening 3o is formed for the tube group 31 is referred to as the outlet side (other side) Dw2. Therefore, between the first plate portion 32 and the second plate portion 33, the fluid G flows from the inlet side Dw1 to the outlet side Dw2 in the width direction Dw.

[0024] An end portion of the first plate portion 32 on the inlet side Dw1 in the width direction Dw is disposed with a gap between it and the shell main body 21. An end portion of the first plate portion 32 on the outlet side Dw2 in the width direction Dw is disposed with a gap between it and the shell main body 21.

[0025] Similarly, an end portion of the second plate portion 33 on the inlet side Dw1 in the width direction Dw is disposed with a gap between it and the shell main body 21. An end portion of the second plate portion 33 on the outlet side Dw2 in the width direction Dw is disposed with a gap between it and the shell main body 21.

[0026] (Configuration of Extension Portion) The cooler 3 further includes an extension portion 34. The extension portion 34 extends from an end of the second plate portion 33 toward the shell main body 21. In this embodiment, the extension portion 34 has a flat plate shape. The extension portion 34 extends from an end of the second plate portion 33 on the inlet side Dw1 in the width direction Dw toward the inner circumferential surface of the shell main body 21. The extension portion 34 extends from the end of the second plate portion 33 downward in the vertical direction Dv, sloping toward the inlet side Dw1 in the width direction Dw. The tip of the extension portion 34 contacts the lower inner circumferential surface of the shell main body 21. As a result, the extension portion 34 connects the second plate portion 33 and the shell main body 21 and partitions the space within the shell main body 21. Specifically, the extension portion 34 prevents the fluid G from flowing downward in the vertical direction Dv relative to the second plate portion 33. Therefore, the fluid G that reaches the extension portion 34 does not flow downward in the vertical direction Dv relative to the second plate portion 33, but is guided to the inlet side opening 3i.

[0027] 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 separates the space between the cooler 3 and the inner circumferential surface of the shell main body 21. Specifically, the partition member 5 separates the space between the cooler 3 and the inner circumferential surface of the shell main 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 arranged so as to cover the inlet-side opening 3i. The perforated plate 4 is arranged facing the inlet-side opening 3i located on the inlet side Dw1 in the width direction Dw of the cooler 3. In other words, the perforated plate 4 covers the opening in the cooler 3 through which the fluid G flows. The perforated plate 4 is arranged so as to cover the tube bank 31 from the inlet side Dw1 in the width direction Dw. The perforated plate 4 is arranged 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 throughout its entirety.

[0029] (Configuration of the demister) The demister 6 is arranged to cover the outlet-side opening 3o. The demister 6 collects liquid that is formed when the fluid G that has come into contact with the plurality of cooling pipes 35 flows through the demister 6. The demister 6 is arranged to face the outlet-side opening 3o that is located on the outlet side Dw2 in the width direction Dw of the cooler 3. In other words, the demister 6 covers the opening in the cooler 3 through which the fluid G flows out. The demister 6 is arranged to cover the tube group 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 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 multiple cooling pipes 35 at the inlet side opening 3i. The baffle plate 7 reduces the flow velocity of the fluid G colliding with the multiple cooling pipes 35 to half or less 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 at a position closer to the second plate portion 33 than the first plate portion 32 so as to block a portion of the inlet side opening 3i. The baffle plate 7 is arranged adjacent to the inlet side Dw1 of the perforated plate 4 in the width direction Dw. The baffle plate 7 blocks a portion of the multiple holes 41 in the perforated plate 4. The baffle plate 7 extends upward from the second plate portion 33 in the vertical direction Dv so as to overlap with the cooling pipes 35 arranged in about one to three rows in the vertical direction Dv from the second plate portion 33, when viewed from the axial direction Da. The baffle plate 7 may be installed behind the perforated plate 4. That is, the baffle plate 7 may be disposed between the perforated plate 4 and the cooling pipes 35. Furthermore, the baffle plate 7 is not limited to being a member independent from the perforated plate 4. For example, the baffle plate 7 may be formed integrally with the perforated plate 4. In this case, instead of blocking the holes 41 in the perforated plate 4 with the baffle plate 7, a structure may be adopted in which the holes 41 in the perforated plate 4 are not opened in the region to be blocked.

[0031] (Explanation of Fluid Flow Within the Shell) As shown in FIGS. 3 and 4 , the fluid G that flows into the shell body 21 from the inlet nozzle 24 is guided by the partition member 5 and collides with the first plate portion 32. The fluid G then flows around the end of the first plate portion 32 toward the inlet-side opening 3i. A portion of the fluid G that reaches the inlet-side opening 3i passes through the holes 41 in the perforated plate 4 and flows between the first plate portion 32 and the second plate portion 33. The fluid G that passes through the holes 41 in the perforated plate 4 collides with the cooling pipes 35 and flows toward the outlet side Dw2 in the width direction Dw. The fluid G then passes between the first plate portion 32 and the second plate portion 33 while colliding with the cooling pipes 35 and reaches the demister 6, where the liquid portion is collected. The fluid G that passes through the demister 6 is discharged to the outside of the shell body 21 from the outlet nozzle 25.

[0032] Furthermore, a portion of the fluid G that has reached the inlet-side opening 3i flows downward in the vertical direction Dv along the perforated plate 4 while increasing its flow velocity, and reaches the extension portion 34. The fluid G that has reached the extension portion 34 changes its flow direction so as to come into contact with the extension portion 34 and bounce back, and then flows upward in the vertical direction Dv. The fluid G then passes through holes 41 in the perforated plate 4 that are located below in the vertical direction Dv and close to the extension portion 34, and attempts to flow between the first plate portion 32 and the second plate portion 33. Here, because the baffle plate 7 is provided, the fluid G that has come into contact with the extension portion 34 and is flowing upward in the vertical direction Dv flows around from above in the vertical direction Dv to avoid the baffle plate 7 and flows into the holes 41 in the perforated plate 4.

[0033] (Operation and Effect) In the compressor system 8 configured as described above, 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 reduced 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 reduced. This makes it possible to suppress vibration of the cooling pipes 35 that occurs when the fluid G passes around the cooling pipes 35.

[0034] Furthermore, the baffle 7, which is a plate-shaped member, is disposed so as to block a portion of the inlet-side opening 3i at a position closer to the second plate portion 33 than the first plate portion 32. In other words, the baffle 7 obstructs the flow of the fluid G flowing in from the inlet-side opening 3i at a position farther from the inlet nozzle 24. The flow velocity of the fluid G flowing into the shell main body 21 from the inlet nozzle 24 increases with increasing distance from the inlet nozzle 24. In other words, when viewed from the axial direction Da, the flow velocity is particularly high at a position closer to the second plate portion 33 than the first plate portion 32 at the inlet-side opening 3i. Therefore, the flow velocity of the fluid G having a high flow velocity can be effectively reduced. Furthermore, since the baffle 7 is formed in a plate shape, the flow of the fluid G can be obstructed with a simple structure, and the effect of reducing the flow velocity can be easily achieved. Furthermore, since the baffle 7 only partially obstructs the inlet-side opening 3i, a significant reduction in the flow rate of the fluid G flowing into the multiple cooling pipes 35 can be suppressed. 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, which significantly contributes to the generation of vibration in the cooling pipe 35 , without deteriorating the cooling performance of the cooler 3 .

[0035] Furthermore, the fluid G that reaches the extension portion 34 changes its flow direction and flows upward in the vertical direction Dv before flowing into the inlet-side opening 3i. Therefore, its flow velocity is faster than that of the fluid G that flows directly into the inlet-side opening 3i. That is, the fluid G that flows into the inlet-side opening 3i via the extension portion 34 has the highest flow velocity. However, in this embodiment, the baffle plate 7 extends from the connection position between the extension portion 34 and the second plate portion 33 and blocks a portion of the inlet-side opening 3i. Therefore, the fluid G that reaches the extension portion 34 cannot flow directly into the inlet-side opening 3i without being obstructed by the extension portion 34, and its inflow is inhibited by the baffle plate 7. Therefore, the flow velocity of the fluid G with the highest flow velocity can be effectively reduced. As a result, the baffle plate 7 can effectively suppress the maximum flow velocity of the fluid G, which significantly contributes to the generation of vibrations in the cooling pipe 35.

[0036] Furthermore, the baffle plate 7 is arranged so as to block some of the holes 41 in the perforated plate 4. The perforated plate 4 itself, which has a plurality of holes 41, has a flow straightening effect, so that the flow velocity of the fluid G flowing into the inlet-side opening 3i can be reduced overall. In addition to the perforated plate 4, the baffle plate 7 that blocks some of the holes 41 in the perforated plate 4 is arranged, so that a faster flow velocity can be suppressed with high precision.

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

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

[0039] Furthermore, the arrangement of the plurality of cooling pipes 35 constituting the pipe group 31 is not limited to the arrangement in the above embodiment. For example, the plurality of cooling pipes 35 are not limited to being arranged in a staggered pattern as in the present embodiment, but may be arranged in a grid pattern.

[0040] <Additional Notes> The cooling device 1 described in the embodiment can be understood, for example, as follows.

[0041] (1) A cooling device 1 according to a first aspect includes a shell 2 having 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 inside of the shell body 21, and an outlet nozzle 25 arranged apart from the inlet nozzle 24 in the axial direction Da along the axis O and for feeding the fluid G from inside the shell body 21 to the outside, a cooler 3 arranged inside the shell body 21 and capable of cooling by circulating the fluid G flowing from the inlet nozzle 24 toward the outlet nozzle 25 therein, and a maximum flow rate of the fluid G flowing into the cooler 3. The cooler 3 includes a plurality of cooling pipes 35 extending in the axial direction Da and having a cooling medium flowing therethrough, a first plate portion 32 arranged in a position close to the inlet nozzle 24 with respect to the plurality of cooling pipes 35 and facing the inlet nozzle 24, and a second plate portion 33 arranged on the opposite side of the first plate portion 32 with the plurality of cooling pipes 35 interposed therebetween, and 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 toward the plurality of cooling pipes 35 at an inlet side opening 3i through which the fluid G is supplied to the plurality of cooling pipes 35.

[0042] As a result, the baffle plate 7 reduces the maximum flow velocity of the fluid G before it passes between the plurality of cooling pipes 35. As a result, the flow velocity of the fluid G when it passes around the cooling pipes 35 is also reduced. This makes it possible to suppress vibration of the cooling pipes 35 that occurs when the fluid G passes around the cooling pipes 35.

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

[0044] As a result, the baffle 7 obstructs the flow of the fluid G flowing in from the inlet-side opening 3i. The baffle 7 blocks a portion of the inlet-side opening 3i at a position closer to the second plate portion 33 than the first plate portion 32, where the flow velocity is higher. Therefore, the flow velocity of the fluid G, which has a high flow velocity, can be effectively reduced. Furthermore, since the baffle 7 is formed in a plate shape, the flow of the fluid G can be obstructed with a simple structure, and the effect of reducing the flow velocity can be easily obtained. Furthermore, since the baffle 7 only partially blocks the inlet-side opening 3i, a significant reduction in the flow rate of the fluid G flowing into the multiple cooling pipes 35 can be suppressed. Therefore, a decrease in the cooling performance of the cooler 3 can be suppressed. In this way, the baffle 7 can suppress the maximum flow velocity of the fluid G, which significantly contributes to the generation of vibrations in the cooling pipes 35, without degrading the cooling performance of the cooler 3.

[0045] (3) The cooling device 1 according to a third aspect is the cooling device 1 of (1) or (2), wherein the cooler 3 has an extension portion 34 that extends from the end 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 the connection position of the extension portion 34 and the second plate portion 33 and blocks a portion 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 hindered by the baffle plate 7. Therefore, it is possible to effectively reduce the flow velocity of the fluid G that has the highest flow velocity. As a result, the baffle plate 7 can effectively suppress the maximum flow velocity of the fluid G, which significantly contributes to the generation of vibrations in the cooling pipe 35.

[0047] (4) The cooling device 1 according to a fourth aspect is any one of the cooling devices 1 according to (1) to (3), further comprising a perforated plate 4 arranged to cover the inlet side opening 3i and having a plurality of holes 41, and the baffle plate 7 blocks some of the plurality of holes 41 in the perforated plate 4.

[0048] As a result, the perforated plate 4 itself having the plurality of holes 41 has a flow straightening effect, and the flow velocity of the fluid G flowing into the inlet-side opening 3i can be reduced overall. In addition to the perforated plate 4, the baffle plate 7 that blocks some of the holes 41 of the perforated plate 4 is provided, so that a faster flow velocity can be suppressed with high precision.

[0049] 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.

[0050] 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 bank 35 Cooling pipe 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 Perforated 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 having a shell body formed in a cylindrical shape extending around an axis, an inlet nozzle for feeding 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; and a baffle plate for reducing the maximum flow velocity of the fluid flowing into the cooler, wherein the cooler has a plurality of cooling pipes extending in the axial direction and having 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 pipes, and a second plate portion disposed on the side opposite to the first plate portion with the plurality of cooling pipes interposed therebetween, and the baffle plate is a cooling device formed between the first plate portion and the second plate portion and having an inlet-side opening for supplying the fluid to the plurality of cooling pipes to reduce the flow velocity of the fluid flowing into the plurality of cooling pipes.

2. The cooling device according to claim 1, wherein the baffle plate is a plate-like member 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 portion of the second plate portion toward the shell body for guiding the fluid to the inlet-side opening, and 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. The cooling device according to claim 2.

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

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