JP2014173983A - Cylindrical heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably suppress sloshing and to suitably prevent exposure of a tube bundle from a liquid surface.SOLUTION: A cylindrical heat exchanger includes: a cylindrical container 1 which contains cooling water to have a free liquid surface and is disposed so that an axial direction is horizontal; a tube bundle 5 for cooling fluid to be cooled placed to be soaked in the cooling water in the container 1; and a partition member 10 which is placed with an interval in the axial direction of container 1 and suppresses sloshing of cooling water.

Description

  The present invention relates to a cylindrical heat exchanger provided with cooling water having a free liquid level.

Conventionally, as this type of cylindrical heat exchanger, for example, a static cooling heat exchanger for the purpose of removing decay heat of a reactor pressure vessel when an accident such as loss of power occurs at a nuclear power plant. An emergency condenser is known.
The emergency condenser includes a vessel in which cooling water is contained, and a tube bundle composed of a plurality of steel pipes into which steam as a cooled fluid generated in the reactor pressure vessel is drawn. The reactor pressure vessel is cooled by cooling and condensing and returning to the reactor pressure vessel again.

The holding height of the cooling water in the emergency condenser is about half of the container assuming that hot steam passes through the tube bundle and bubbles are generated by evaporation of the cooling water. It is supposed to have. For this reason, at the time of an earthquake, the liquid surface may swing (sloshing).
As a technique for suppressing such fluctuation of the liquid level, a technique disclosed in Patent Document 1 is known. Patent Document 1 discloses sloshing liquid level adjusting means (a partitioning plate for sloshing liquid level, a sloping plate for changing the direction of the liquid level upward flow at the time of sloshing, a liquid for generating a liquid drop time delay of the liquid surface wave at the time of sloshing. A nuclear reactor vessel with no use is described.

JP-A-5-164862

  Sloshing can be suppressed by the reactor vessel described in Patent Document 1. However, the sloshing liquid level adjusting means of Patent Document 1 is a unique technique applied to a nuclear reactor vessel, and development of a new technique for suppressing sloshing in a cylindrical heat exchanger having a different basic structure is desired. It was rare.

  An object of the present invention is to provide a cylindrical heat exchanger that can appropriately prevent sloshing and prevent the tube bundle from being exposed from the liquid surface.

  The present invention includes a cylindrical container in which cooling water is contained in a state having a free liquid level and is installed with the axial direction oriented horizontally, and is placed in a state of being immersed in the cooling water in the container. A tube bundle for cooling the fluid, and a partition member which is disposed at an interval in the axial direction of the container and suppresses the sloshing of the cooling water, are provided.

  According to the present invention, even when the container is shaken during an earthquake, the partition member disposed at an interval in the axial direction of the container suitably suppresses the sloshing of the liquid level of the cooling water. Exposure from is preferably prevented.

  ADVANTAGE OF THE INVENTION According to this invention, the cylindrical heat exchanger which can suppress suitably the sloshing of a liquid level and can prevent that a tube bundle is exposed from a liquid level is obtained.

It is a figure which shows the cylindrical heat exchanger which concerns on 1st Embodiment of this invention, (a) is a sectional side view, (b) is an expanded longitudinal cross-sectional view. It is operation | movement explanatory drawing of the cylindrical heat exchanger which concerns on 1st Embodiment. It is a sectional side view which shows the modification of the cylindrical heat exchanger which concerns on 1st Embodiment. (A) is an enlarged vertical sectional view of the modified example shown in FIG. 3, (b) is an enlarged vertical sectional view showing another example of the horizontal partition member. (A) is an expanded longitudinal cross-sectional view which shows the other example of a horizontal partition member, (b) is an expanded longitudinal cross-sectional view which shows the modification which added the partition member further. It is operation | movement explanatory drawing of the modification of the cylindrical heat exchanger which concerns on 1st Embodiment. (A) is an enlarged longitudinal cross-sectional view which shows the cylindrical heat exchanger which concerns on 2nd Embodiment, (b) is an enlarged longitudinal cross-sectional view which shows the modification of Fig.7 (a). (A) is an enlarged longitudinal cross-sectional view which shows the cylindrical heat exchanger which concerns on 3rd Embodiment, (b) is an enlarged longitudinal cross-sectional view which shows the modification of Fig.8 (a). (A) is an expanded longitudinal cross-sectional view which shows the other example of a horizontal partition member, (b) is an enlarged longitudinal cross-sectional view which shows the example which added the partition member further. (A) is an expanded longitudinal cross-sectional view which shows the cylindrical heat exchanger which concerns on 4th Embodiment, (b) is an expanded longitudinal cross-sectional view which shows the modification of Fig.10 (a). (A) is side sectional drawing which shows the cylindrical heat exchanger which concerns on 5th Embodiment, (b) is an effect explanatory view of the cylindrical heat exchanger which concerns on 5th Embodiment. It is an expansion perspective view which shows the partition member used for the cylindrical heat exchanger which concerns on 5th Embodiment. (A) is side sectional drawing which shows the cylindrical heat exchanger which concerns on 6th Embodiment, (b) is effect | action explanatory drawing of the cylindrical heat exchanger which concerns on 6th Embodiment. (A) is a sectional side view showing a modification of the cylindrical heat exchanger according to the fifth embodiment, and (b) is a sectional side view showing a modification of the cylindrical heat exchanger according to the sixth embodiment. It is an expansion perspective view which shows the partition member used for the cylindrical heat exchanger which concerns on 5th Embodiment, and a horizontal partition member.

  Hereinafter, an embodiment of a cylindrical heat exchanger according to the present invention will be described with reference to the drawings. Here, in the following description, when referring to “up and down” and “front and back”, the direction shown in FIG. 1A is used as a reference, and when saying “left and right”, the direction shown in FIG. And Moreover, although a nuclear power plant is illustrated as an installation provided with a cylindrical heat exchanger, it is not intended to limit an installation to which the cylindrical heat exchanger of the present embodiment is applied.

(First embodiment)
As shown in FIG. 1A, the cylindrical heat exchanger includes a cylindrical container 1, a tube bundle 5 arranged in the container 1, and a water chamber 2 connected to the tube bundle 5, and the container A plurality of partition members 10 are provided in 1.
The container 1 is installed with the axial direction oriented in the horizontal direction (front-rear direction in FIG. 1A), and contains the cooling water W in a state having a free liquid level W1. The container 1 of the present embodiment contains approximately half the cooling water W of the entire volume of the container 1. Thereby, the space S is formed above the free liquid level W1 of the cooling water W. As will be described later, in this space S, water vapor due to vaporization of the cooling water W is accumulated. The container 1 is provided with a discharge port (not shown) for discharging the air in the space S. Such a container 1 is installed in the installation space of a nuclear power plant via the support part 1a.

  The water chamber 2 is attached to an opening 1c provided at the front portion (one end) of the container 1, and an inlet 5a and an outlet 5b of the tube bundle 5 are connected to the rear portion (the other end) of the water chamber 2. Yes. To the water chamber 2, a cooled fluid inlet nozzle 3 for taking in the cooled fluid and a cooled fluid outlet nozzle 4 for taking out the cooled fluid are connected so that the cooled fluid can flow. In the water chamber 2, a partition 2 a that separates the cooled fluid before and after cooling is provided.

The tube bundle 5 is a bundle of a plurality of thin tubes made of steel pipes or the like. The tube bundle 5 has a substantially U shape in a side view, and is extended and arranged in the container 1 from the front part of the container 1 toward the rear part. Configured to go back. As a result, the fluid to be cooled taken from the reactor pressure vessel through a pipe (not shown) flows into the water chamber 2 from the cooled fluid inlet nozzle 3 and is introduced into the tube bundle 5 from the inlet 5 a of the tube bundle 5. The inside is cooled by heat exchange with the cooling water W. Thereafter, the water is returned from the outlet 5b of the tube bundle 5 to the water chamber 2, and is returned from the cooled fluid outlet nozzle 4 to a reactor pressure vessel or the like through a pipe (not shown).
In addition, the tube bundle 5 is arrange | positioned in the lower part of the container 1 which is not exposed from the free liquid level W1, and is immersed in the cooling water W.

  As shown in FIG. 1A, the partition member 10 is a plate-like member that is arranged in the container 1 in the vertical direction and partitions the container 1 in the front-rear direction, and is spaced in the axial direction (front-rear direction) of the container 1. Is arranged so as to prevent sloshing of the liquid level of the cooling water W. As shown in FIG. 1B, the partition member 10 has a height equal to the inner diameter of the container 1 to partition the internal space of the container 1, and partitions the cooling water W in the axial direction (FIG. 1 (a)).

  The right side portion of the partition member 10 is notched, and a space that allows air or water vapor to flow between the right end portion 11 of the partition member 10 and the inner surface 1b of the container 1 facing the partition member 10. A flow space S2 that allows the flow of S1 and the cooling water W is formed.

In the present embodiment, the space S <b> 1 and the flow space S <b> 2 communicate with each other on a straight line in the axial direction of the container 1 in the right inside of the container 1. That is, water vapor and air can flow between the space S adjacent in the axial direction of the container 1 through the space S1, and the cooling water W passes along a straight line in the axial direction of the container 1 through the flow space S2. It is possible to flow. Therefore, water vapor, air, and cooling water W flow between the sections partitioned by the partition members 10.
An insertion hole 12 through which the tube bundle 5 is inserted is formed in the lower part of the front two partition members 10 so as to correspond to the tube bundle 5.

In the cylindrical heat exchanger having such a configuration, when the container 1 is shaken at the time of an earthquake, the liquid level of the cooling water W is shaken, and as shown in FIG. Although W11 shakes, the partition member 10 blocks the rise of the liquid level W11, and sloshing is suitably suppressed.
In general, when sloshing occurs during an earthquake, assuming that the container 1 is cylindrical, the height of the rocking of the liquid level may rise to a height approximately proportional to the diameter of the container 1. . On the other hand, in this embodiment, the rising of the swaying liquid level W11 is blocked by the partition member 10 and is preferably suppressed, and sloshing is forcibly suppressed.

  According to the cylindrical heat exchanger of the present embodiment described above, even if the container 1 is shaken at the time of an earthquake, the sloshing of the cooling water W is performed by the partition members 10 arranged at intervals in the axial direction of the container 1. It can suppress, and it can prevent suitably that the tube bundle 5 is exposed from a liquid level. Thereby, heat exchange is continued through the tube bundle 5, and cooling of a reactor pressure vessel can be maintained suitably.

  Moreover, since the partition member 10 is installed in the vertical direction, the partition member 10 becomes an effective obstacle against the rise of the liquid level, and sloshing can be suitably suppressed.

  Moreover, since the partition member 10 is made of a plate-like member having a height equal to the inner diameter of the container 1, even if the liquid level further rises, this can be suitably suppressed, and sloshing is suitably suppressed. Can do.

FIG. 3 is a side sectional view showing a modification of the cylindrical heat exchanger according to the first embodiment. In this modified example, in addition to the partition member 10, a horizontal partition member 20 extending in the axial direction of the container 1 is installed.
The horizontal partition member 20 is disposed such that the upper surface 20a is below the free liquid surface W1 of the cooling water W, and the axial direction of the container 1 (see FIG. 3) and the left-right direction of the container 1 (see FIG. 4 (a)). As shown in FIG. 4A, a plurality of escape holes 21 are formed in the horizontal partition member 20. The escape hole 21 functions as a water vapor passage when water vapor is generated by heat exchange by the tube bundle 5.
The horizontal partitioning member 20 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . Further, it may be partially provided in the axial direction of the container 1.

  According to such a cylindrical heat exchanger, the horizontal partition member 20 functions as an effective obstacle to sloshing as shown in FIG. That is, sloshing in the axial direction of the container 1 can be suppressed by the partition member 10, and sloshing in the left-right direction of the container 1 can be suppressed by the horizontal partition member 20, and the synergistic effect of the partition member 10 and the horizontal partition member 20 It is possible to more suitably prevent the tube bundle 5 from being exposed from the liquid surface.

  In addition, as shown in FIG.4 (b), the horizontal partition member 20 is provided to the position corresponding to the right end part 11 of the partition member 10, and the flow which is not covered by the horizontal partition member 20 to the side of the right end part 11 You may comprise so that the space S2 may be formed.

  Further, as shown in FIG. 5A, the horizontal partition member 20 has a width L <b> 2 larger than the outer diameter L <b> 1 of the tube bundle 5 so that the upper part of the tube bundle 5 is covered with the horizontal partition member 20. It may be configured. In this case as well, the horizontal partition member 20 is disposed below the free liquid level W1.

  By using such a horizontal partition member 20, sloshing of the liquid level of the cooling water W can be suitably suppressed at least above the tube bundle 5. Therefore, by installing the horizontal partition member 20 having a minimum size, it is possible to effectively prevent the tube bundle 5 from being exposed from the liquid surface while reducing the cost.

  FIG. 5B is an enlarged longitudinal sectional view showing an example in which another partition member is added. In this example, a vertical partition member 25 extending in the axial direction of the container 1 is further installed in addition to the horizontal partition member 20. The vertical partition member 25 is installed with its lower end crossing the horizontal partition member 20 with a space in the left-right direction, and is provided continuously in the axial direction of the container 1.

  According to such a cylindrical heat exchanger, sloshing of the cooling water in the left-right direction of the container 1 can be suppressed by the vertical partition member 25, and a synergistic effect with the partition member 10, the horizontal partition member 20, and the vertical partition member 25. Therefore, it is possible to suitably prevent the tube bundle 5 from being exposed from the liquid surface.

  Note that the vertical partition member 25 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . For example, the vertical partition member 25 may be provided only between the partition members 10 that intersect the tube bundle 5. Even in such a case, the sloshing vertical partition member 25 of the cooling water W blocked by the partition member 10 at the time of an earthquake can be suitably suppressed, and the tube bundle 5 is preferably prevented from being exposed from the liquid surface. Can do.

(Second Embodiment)
Next, the cylindrical heat exchanger of 2nd Embodiment is demonstrated. FIG. 7A is an enlarged longitudinal sectional view showing a cylindrical heat exchanger according to the second embodiment, and FIG. 7B is an enlarged longitudinal sectional view showing a modification of FIG. 7A.
This embodiment is different from the first embodiment in that the partition member 10 of the first embodiment has the flow space S2 on the right side of the partition member 10, whereas the partition member of the second embodiment. 10A is the point which has the long holes 13a and 13b extended in the left-right direction at the center lower part.

  The partition member 10 </ b> A is formed of a plate-like member that partitions the inner surface 1 b of the container 1 in the vertical direction in the same manner as the partition member 10 described above. The partition member 10 </ b> A is disposed at an interval in the axial direction of the container 1 and sloshing the coolant W. It comes to suppress. The partition member 10A is in contact with the inner surface 1b of the container 1 at the installation position, and allows the cooling water W to flow in the axial direction only through the long holes 13a and 13b.

  The long holes 13a and 13b are arranged in the vertical direction above the tube bundle 5, and the long holes 13a are formed to be longer than the long holes 13b and have a large opening area.

  According to such a cylindrical heat exchanger, the same effects as those of the first embodiment can be obtained. That is, even if the container 1 is shaken at the time of an earthquake, the sloshing of the cooling water W can be suppressed by the partition members 10A arranged at intervals in the axial direction of the container 1, and the tube bundle 5 is exposed from the liquid surface. Can be suitably prevented. Thereby, heat exchange is continued through the tube bundle 5, and cooling of a reactor pressure vessel can be maintained suitably.

  Note that the partition member 10A is in contact with the inner surface 1b of the container 1 and can prevent sloshing of the cooling water W more than that of the first embodiment, so that the tube bundle 5 is exposed from the liquid surface. This can be suitably prevented.

  FIG. 7B is an enlarged longitudinal sectional view showing a modification of the cylindrical heat exchanger according to the second embodiment. In this modification, a horizontal partition member 20 extending in the axial direction of the container 1 is installed in addition to the partition member 10A.

  According to such a cylindrical heat exchanger, the horizontal partition member 20 functions as an effective obstacle to sloshing. In other words, the sloshing in the axial direction of the container 1 can be suppressed by the partition member 10A, and the sloshing in the left-right direction of the container 1 can be suppressed by the horizontal partition member 20, and the synergy between the partition member 10A and the horizontal partition member 20 can be suppressed. Due to the effect, it is possible to suitably prevent the tube bundle 5 from being exposed from the liquid surface.

Moreover, although the horizontal partition member 20 showed the thing of the width | variety covering the left-right direction, it is not restricted to this, A predetermined clearance gap (inner surface 1b of the container 1) between right-and-left both ends and the inner surface 1b of the container 1 is shown. May be configured so as to have an interval between them.
The horizontal partition member 20 is disposed below the free liquid level W1 of the cooling water W. Further, the horizontal partition member 20 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . Further, it may be partially provided in the axial direction of the container 1.

(Third embodiment)
Next, a cylindrical heat exchanger according to the third embodiment will be described focusing on differences from the first embodiment. FIG. 8A is an enlarged longitudinal sectional view showing a cylindrical heat exchanger according to the third embodiment.
In the cylindrical heat exchanger according to the third embodiment, as shown in FIG. 8A, instead of the partition member 10, a long plate-shaped partition member 10B extending in the vertical direction of the inner surface 1b of the container 1 is used. In addition, a space S1 and a flow space S2 are provided on the left and right sides of the partition member 10B. The partition member 10B has a width L3 that is larger than the outer diameter L1 of the tube bundle 5.

  According to such a cylindrical heat exchanger, sloshing of the cooling water W can be suitably suppressed by using the partition member 10B in at least a region corresponding to the width L3 in the axial direction of the container 1. Thereby, it can suppress suitably that the tube bundle 5 is exposed from a liquid level.

  FIG. 8B is an enlarged longitudinal sectional view showing a modification of the cylindrical heat exchanger according to the third embodiment. In this modification, a horizontal partition member 20 extending in the axial direction of the container 1 is installed in addition to the partition member 10B. The horizontal partition member 20 is disposed below the free liquid level W1 of the cooling water W. Further, the horizontal partition member 20 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . Further, it may be partially provided in the axial direction of the container 1.

  According to such a cylindrical heat exchanger, the horizontal partition member 20 functions as an effective obstacle to sloshing. In other words, the sloshing in the axial direction of the container 1 can be suppressed by the partition member 10B, and the sloshing in the left-right direction of the container 1 can be suppressed by the horizontal partition member 20, and the synergy between the partition member 10B and the horizontal partition member 20 can be suppressed. Due to the effect, it is possible to more suitably prevent the tube bundle 5 from being exposed from the liquid surface.

In addition, as shown to Fig.9 (a), the horizontal partition member 20 is provided in the magnitude | size equivalent to the width | variety of the partition member 10B, and the horizontal partition member 20 is not covered by the side of the right-and-left end parts 11a and 11b. A flow space S2 may be formed.
By using such a horizontal partition member 20, sloshing of the cooling water W can be suitably suppressed at least above the tube bundle 5. Therefore, by installing the horizontal partition member 20 having a minimum size, it is possible to effectively prevent the tube bundle 5 from being exposed from the liquid surface while reducing the cost.

  Further, as shown in FIG. 9B, in addition to the horizontal partition member 20, vertical partition members 22, 23 and 23 extending in the axial direction of the container 1 may be installed. The vertical partition members 22, 23, and 23 are all installed with their lower ends intersecting the horizontal partition member 20 with a space in the left-right direction, and are continuously provided in the axial direction of the container 1.

  According to such a cylindrical heat exchanger, sloshing of the cooling water W in the left-right direction of the container 1 can be suppressed by the vertical partition members 22, 23, 23, and the partition member 10B, the horizontal partition member 20, and the vertical partition member The tube bundle 5 can be suitably prevented from being exposed from the liquid surface due to the synergistic effect with 22, 23, 23.

(Fourth embodiment)
Next, a cylindrical heat exchanger according to the fourth embodiment will be described. FIG. 10A is an enlarged longitudinal sectional view showing a cylindrical heat exchanger according to the fourth embodiment.
In the cylindrical heat exchanger of the fourth embodiment, as shown in FIG. 10 (a), rods 15a to 15d as support members are assembled in a lattice shape in the vertical and horizontal directions of the inner surface 1b of the container 1, The partition member 10 </ b> C is configured by closing a plurality of spaces surrounded by the bars 15 a to 15 d with the plate 16 (here, five plates 16 a to 16 e) in the lattice-like vertical plane.

  Here, in the vertical plane assembled in a lattice shape by the rods 15a to 15d, the following spaces S11, S12, S13, and S14 are not covered with the plate material but are opened. The space S11 is surrounded by the bars 15a and 15c and the inner surface 1b, the space S12 is surrounded by the bars 15a, 15c and 15d and the inner surface 1b, and the space S13 is formed by the bars 15a and 15d. The space S5 is surrounded by the bars 15a and 15d and the inner surface 1b.

  Among these, the space S11 functions as a space through which water vapor and air flow, the space S12 functions as a space through which water vapor, air, and cooling water W flow, and the spaces S13 and S14 flow through the cooling water W. It functions as a space to play. Among these, the space S14 corresponds to the arrangement of the tube bundle 5.

  According to such a cylindrical heat exchanger, an appropriate space can be closed by the plate material 16, and sloshing of the cooling water W can be suppressed by partitioning an appropriate position by the plate materials 16a to 16e. Can be suitably prevented from being exposed from the liquid surface.

Further, since the space S14 corresponds to the arrangement of the tube bundle 5, the flow of the cooling water W in the axial direction of the tube bundle 5 can be ensured, and heat exchange by the tube bundle 5 can be suitably performed.
Moreover, the rods 15a to 15d also function as reinforcing members, and the rigidity of the container 1 can be increased.

Moreover, as shown in FIG.10 (b), you may install the horizontal partition member 20 extended in the axial direction of the container 1. As shown in FIG.
Also in this case, the horizontal partition member 20 functions as an effective obstacle to sloshing, and the partition member 10 can suppress the sloshing of the cooling water W in the axial direction of the container 1, and the horizontal partition member 20 The sloshing of the cooling water W in the left-right direction of 1 can be suppressed, and the tube bundle 5 can be more preferably prevented from being exposed from the liquid surface due to the synergistic effect of the partition member 10C and the horizontal partition member 20.
The horizontal partition member 20 is disposed below the free liquid level W1 of the cooling water W. Further, the horizontal partition member 20 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . Further, it may be partially provided in the axial direction of the container 1.

  It is sufficient that at least one plate member 16 is provided, and at least one of the spaces surrounded by the rod members 15a to 15d is left and all the remaining portions are covered with the individual plate members 16. Good.

(Fifth embodiment)
Next, a cylindrical heat exchanger according to a fifth embodiment will be described.
FIG. 11A is a side sectional view showing a cylindrical heat exchanger according to the fifth embodiment, FIG. 11B is an operation explanatory view of the cylindrical heat exchanger according to the fifth embodiment, and FIG. It is an expansion perspective view which shows the partition member used for the cylindrical heat exchanger which concerns on embodiment.
In the cylindrical heat exchanger according to the present embodiment, as shown in FIG. 11A, the partition member includes a plate member 30 (a plurality of members) having a cross-sectional mountain shape, and the plurality of plate members 30 have their top portions 30a on the upper side. In this state, they are arranged at intervals in the vertical direction.

As shown in FIG. 12, the plate member 30 is supported by two support rods 31 arranged in parallel in the left-right direction in the container 1. A support hole 32 through which the support bar 31 is inserted is formed in the plate member 30.
The plate member 30 is formed to be longer than the outer diameter L1 (see FIG. 5A) of the tube bundle 5, and the upper portion of the tube bundle 5 is a plurality of plate members 30 as shown in FIG. 11A. Partly covered.

  According to the cylindrical heat exchanger having such a plate member 30, as shown in FIG. 11B, the plate member 30 having a mountain-shaped cross section functions as an effective obstacle to sloshing. That is, sloshing of the cooling water W in the axial direction of the container 1 can be suppressed by the partition member 10, and the tube bundle 5 can be suitably prevented from being exposed from the liquid surface.

  The cooling water W can flow in the axial direction of the container 1 through the space between the upper and lower plate members 30, 30.

(Sixth embodiment)
Next, the cylindrical heat exchanger of 6th Embodiment is demonstrated.
FIG. 13A is a side sectional view showing a cylindrical heat exchanger according to the sixth embodiment, and FIG. 13B is an operation explanatory view of the cylindrical heat exchanger according to the sixth embodiment.

The cylindrical heat exchanger of this embodiment uses a plate material 33 that is turned upside down with respect to the plate material 30 shown in the fifth embodiment, and the plurality of plate materials 33 have their top portions 33a facing downward. A plurality of them are arranged at intervals in the vertical direction.
The plate material 33 is supported in the container 1 by two support bars 31 arranged in parallel in the left-right direction. A support hole 32 through which the support bar 31 is inserted is formed in the plate material 33.
The plate member 33 is formed longer than the outer diameter L1 of the tube bundle 5 (see FIG. 5A). As shown in FIG. 13A, the upper portion of the tube bundle 5 is a plurality of plate members 33. Partly covered.

  Even with such a cylindrical heat exchanger having the plate material 33, as shown in FIG. 13B, the plate material 33 having an inverted cross-sectional shape functions as an effective obstacle to sloshing, and in the axial direction of the container 1. Sloshing of the cooling water W can be suitably suppressed. Thereby, it can prevent suitably that the tube bundle 5 is exposed from a liquid level.

  FIG. 14A is a side sectional view showing a modification of the cylindrical heat exchanger according to the fifth embodiment, and FIG. 14B is a side sectional view showing a modification of the cylindrical heat exchanger according to the sixth embodiment. FIG. 15 is an enlarged perspective view showing a partition member and a horizontal partition member used in the cylindrical heat exchanger according to the fifth embodiment.

In these modified examples, the horizontal partition members 20 are respectively arranged between the plate members 30 and 30 (see FIG. 14A and FIG. 15) and between the plate members 33 and 33, as shown in FIG. The horizontal partition member 20 has a support hole 32 through which the support bar 31 is inserted.
The horizontal partition member 20 is disposed below the free liquid level W1 of the cooling water W. Further, the horizontal partition member 20 is not limited to the one provided continuously in the axial direction of the container 1, and may be provided by being divided (divided) into a plurality of parts in the axial direction of the container 1. . Further, it may be partially provided in the axial direction of the container 1.
Furthermore, the horizontal partition member 20 can be provided with an appropriate length in the left-right direction of the container 1.

  According to such a cylindrical heat exchanger, the horizontal partition member 20 functions as an effective obstacle to sloshing. That is, the sloshing of the cooling water W in the axial direction of the container 1 can be suppressed by the plate material 30 (33), and the sloshing of the cooling water W in the left-right direction of the container 1 can be suppressed by the horizontal partition member 20. It is possible to more suitably prevent the tube bundle 5 from being exposed from the liquid surface due to the synergistic effect of 30 (33) and the horizontal partition member 20.

  In each of the above-described embodiments, the horizontal partition member 20 has been shown to be disposed below the free liquid level W1 of the cooling water W, but is not limited thereto, and the horizontal partition member 20 It may be arranged above (with a predetermined distance from the free liquid level W1) to suppress the sloshing of the cooling water W.

DESCRIPTION OF SYMBOLS 1 Container 2 Water chamber 3 Cooled fluid inlet nozzle 4 Cooled fluid outlet nozzle 5 Tube bundle 5a Inlet 5b Outlet 10 Partition member 10A, 10B, 10C Partition member 15a-15d Bar material 16 Plate material 20 Horizontal partition member 21 Relief hole W Cooling water

Claims (11)

A cylindrical container in which cooling water is contained in a state having a free liquid level and the axial direction is set horizontally.
A tube bundle disposed in the container so as to be immersed in the cooling water, and for cooling the fluid to be cooled;
A cylindrical heat exchanger comprising: a partition member arranged at an interval in the axial direction of the container and suppressing sloshing of the cooling water.   The cylindrical heat exchanger according to claim 1, wherein the partition member is a plate-like member installed in a vertical direction.   The cylindrical heat exchanger according to claim 1, wherein the partition member is a plate-like member having a height equal to the inner diameter of the container.   2. The cylindrical heat exchanger according to claim 1, wherein a flow space that allows an axial flow of the cooling water is formed in the container.   The cylindrical heat exchanger according to claim 4, wherein the flow space is formed in a straight line from one axial end to the other end of the container.   2. The cylindrical heat exchange according to claim 1, wherein a plate-like horizontal partition member extending in the axial direction of the container and suppressing sloshing of the cooling water is provided in the container. vessel.   The cylindrical heat exchanger according to claim 6, wherein the horizontal partition member is disposed below the free liquid level of the cooling water or above the free liquid level.   The cylindrical heat exchanger according to claim 7, wherein the horizontal partition member has an escape hole for allowing bubbles to escape due to vaporization of the cooling water.   2. The cylindrical heat exchanger according to claim 1, wherein the partition member includes a plurality of members arranged at intervals in the vertical direction.   The plurality of members are plate members having a mountain-shaped cross section, and are arranged with a space in the vertical direction with the top portion facing upward or the top portion facing downward. The cylindrical heat exchanger according to claim 9.   The partition member includes a bar material assembled in a lattice shape, and a plate material that closes at least one of a plurality of spaces surrounded by the bar material. The cylindrical heat exchanger according to 1.

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