JPWO2017158984A1 - Heat exchanger - Google Patents

Abstract

The heat exchanger 100 includes a container 10 provided with a storage unit 14 for storing drain, a heat transfer tube 3 accommodated in the container 10 and performing heat exchange with at least the drain stored in the storage unit 14, and at least a part thereof. Is disposed in the reservoir 14, the internal space 62 b is open to the outside of the container 10, and the atmosphere open pipe 6 having a communication port 62 a through which the internal space 62 b and the reservoir 14 pass is at least partially atmospheric. The overflow pipe 5 is disposed in the internal space 62b of the open pipe 6 and has a discharge port 52a that is formed at a position higher than the communication port 62a and discharges the drain. The atmosphere release pipe 6 has a movable release pipe 62 that adjusts the height position of the communication port 62a.

Description

  The technology disclosed herein relates to a heat exchanger that exchanges heat with a fluid.

  For example, a heat exchanger described in Patent Document 1 includes a container, a steam supply pipe that supplies steam into the container, a cooling fluid pipe as a heat transfer unit that exchanges heat with the steam, and a pressure inside the container outside the container. And an atmosphere open pipe for opening the drain and an overflow pipe for discharging the drain accumulated in the container. A cooling fluid flows through the cooling fluid pipe. The steam supplied from the steam supply pipe is cooled by exchanging heat with the cooling fluid pipe. At this time, a part of the cooled vapor is condensed into a liquid and stored in the lower part of the container. The lower part of the cooling fluid pipe is immersed in the liquid stored in the container and exchanges heat with the liquid. When the drain accumulated in the container reaches the upper end of the overflow pipe, it is discharged from the overflow pipe.

  Moreover, normally, the space above the drain in the container and the internal space of the air release pipe are sealed with water by the drain and are not in communication. However, when the pressure in the space above the drain rises and the liquid level of the drain decreases, the space above the drain eventually communicates with the internal space of the air release pipe. As a result, the pressure in the space above the drain is released to the atmosphere.

JP 2010-117106 A

  The heat exchanger as described above is incorporated in various systems, and it is desired that the capacity of the heat exchanger can be adjusted in various ways depending on the system and the use state of the system.

  In the heat exchanger of Patent Document 1, the ability of the heat exchanger is improved by changing the temperature, pressure and flow rate of the steam supplied from the steam supply pipe, the temperature, pressure and flow rate of the cooling fluid supplied to the cooling fluid pipe. It is possible to adjust. However, the ability to be adjusted by these changes is only a part, and the adjustment fee is small.

  The technology disclosed herein has been made in view of such a point, and an object thereof is to flexibly adjust the capacity of the heat exchanger.

  The heat exchanger disclosed herein includes a container provided with a storage part for storing a liquid, a heat transfer part accommodated in the container and performing heat exchange with at least the liquid stored in the storage part, and at least A part of the open pipe disposed in the storage part, an internal space open to the outside of the container, and a communication port through which the internal space and the storage part pass; and at least a part of the open pipe And an overflow pipe formed at a position higher than the communication port and having a discharge port for discharging the liquid, the open pipe adjusting the height position of the communication port The first adjustment unit is included.

  According to the heat exchanger disclosed here, the capability of the heat exchanger can be flexibly adjusted.

FIG. 1 is a schematic longitudinal cross-sectional view of a heat exchanger in a state where an overflow pipe and an air release pipe are not cut. FIG. 2 is a schematic longitudinal cross-sectional view of the heat exchanger in a state where the overflow pipe and the air release pipe are cut. FIG. 3 is a schematic longitudinal sectional view of the heat exchanger when the height position of the movable open tube is changed to be high. FIG. 4 is a schematic longitudinal sectional view of a heat exchanger according to another embodiment.

  Hereinafter, exemplary embodiments will be described in detail with reference to the drawings.

  1 and 2 are schematic longitudinal sectional views of the heat exchanger 100. In FIG. 1, a container 10 and a heat transfer tube 3 described later are cut, and in FIG. 2, an overflow tube 5 and an air release tube 6 described later are also cut.

  The heat exchanger 100 includes a container 10, a steam supply unit 2 that supplies steam into the container 10, a heat transfer tube 3 that is accommodated in the container 10, in which cold water flows and exchanges heat with steam, The discharge pipe 4 for discharging the drain accumulated in the container 10, the overflow pipe 5 for discharging drain that cannot be processed by the discharge pipe 4 alone, and the pressure in the container 10 when the pressure in the container 10 increases excessively And an air release pipe 6 for opening the air. The heat exchanger 100 exchanges heat between the steam and the cold water, cools the steam, and recovers the heat of the steam as hot water. Further, the heat exchanger 100 recovers heat from the drain accumulated in the container 10.

  The container 10 has a peripheral wall 11 formed in a cylindrical shape, a ceiling portion 12, and a bottom portion 13. The lower part of the container 10 is a storage part 14 for storing a drain generated by condensation of steam. The drain accumulated in the storage unit 14 is normally discharged through the discharge pipe 4, but when the amount of stored drain increases excessively, a part of the drain is discharged through the overflow pipe 5.

  The steam supply unit 2 is provided in a relatively upper part of the container 10. A steam supply pipe 22 is connected to the steam supply unit 2. The steam supply pipe 22 is connected to, for example, an outlet side of a steam using device or a drain tank, and steam is supplied. The steam supply unit 2 is an example of a supply unit, and steam is an example of a fluid.

  The heat transfer tube 3 is formed in a coil shape so as to circulate around the atmosphere opening tube 6. A cold water supply pipe 31 is connected to the lower end of the heat transfer tube 3, and a cold water discharge pipe 32 is connected to the upper end of the heat transfer tube 3. The cold water supplied from the cold water supply pipe 31 circulates inside the heat transfer pipe 3 and is discharged from the cold water discharge pipe 32. The cold water recovers heat from the steam by exchanging heat with the steam when flowing through the heat transfer tube 3.

  The lower part of the heat transfer tube 3 is disposed at a position to be immersed in the drain stored in the storage unit 14. That is, the heat transfer tube 3 also performs heat exchange with the drain stored in the storage unit 14. The heat transfer tube 3 is an example of a heat transfer unit, and cold water is an example of a heat medium.

  The discharge pipe 4 is connected to the bottom 13 of the container 10. The discharge pipe 4 includes a rigid pipe 41 that is connected to the bottom portion 13 and has no flexibility, and a flexible pipe 42 that is connected to the rigid pipe 41 and has flexibility. The rigid tube 41 extends downward from the bottom 13 and then bends and extends upward. The flexible tube 42 is configured to be deformable. A pipe for discharging the drain is connected to the downstream end of the flexible pipe 42.

  The discharge pipe 4 is configured such that the height position of the highest part of the discharge pipe 4 (the downstream end of the flexible pipe 42 in the figure), that is, the water head can be adjusted by the deformation of the flexible pipe 42. . In the storage part 14, the drain can be stored up to the height of the water head of the discharge pipe 4, that is, the highest part of the discharge pipe 4. In the storage part 14, the amount of drain exceeding the highest part of the discharge pipe 4 is discharged through the discharge pipe 4. That is, the liquid level of the storage unit 14, that is, the capacity of the drain that can be stored in the storage unit 14 is determined by the height position of the highest portion of the discharge tube 4 (in the drawing, the downstream end of the flexible tube 42). The flexible tube 42 is an example of a second adjustment unit.

  The air release pipe 6 is provided at the center of the container 10 so as to extend along the axis of the container 10. The atmosphere release pipe 6 has a fixed release pipe 61 fixed to the container 10 and a movable release pipe 62 movable with respect to the fixed release pipe 61. The atmosphere open pipe 6 is an example of an open pipe.

  The fixed open tube 61 is fixed to the bottom 13 of the container 10. The upper part of the fixed open tube 61 extends through the ceiling 12 to the outside of the container 10. The upper end of the fixed open tube 61 is open. The lower part of the fixed open pipe 61 is disposed in the storage unit 14 and is immersed in the drain stored in the storage unit 14. An opening 61 a that penetrates the tube wall is formed in the lower portion of the fixed open tube 61. The openings 61a are formed at two locations facing each other across the axis of the fixed open tube 61.

  The movable open tube 62 is slidably inserted into the fixed open tube 61 from the upper end of the fixed open tube 61. The upper part of the movable open pipe 62 protrudes outward from the upper part of the fixed open pipe 61. The upper end of the movable open tube 62 is open, and the internal space 62b of the movable open tube 62 is open to the outside of the container 10, that is, to the atmosphere. A communication port 62a is formed in the lower part of the movable open tube 62 so as to penetrate the tube wall. The communication ports 62a are formed at two locations facing each other across the axis of the movable open tube 62. The communication port 62a is exposed to the outside of the fixed open tube 61 through the opening 61a, and allows the internal space 62b and the storage unit 14 to communicate with each other. That is, the drain accumulated in the storage part 14 enters the internal space 62b of the movable open pipe 62 through the communication port 62a.

  A plurality of pairs of engaging holes 62c that are opposed to each other across the axis are formed in the upper part of the movable open tube 62 so as to be aligned in the axial direction. The engagement hole 62c is formed so as to penetrate the tube wall. The pin 62d is inserted into the engagement hole 62c so as to protrude outward from the movable opening tube 62. When the pin 62d is locked to the upper end of the fixed open tube 61, the position of the movable open tube 62 with respect to the fixed open tube 61 is determined. That is, by changing the engagement hole 62c into which the pin 62d is inserted, the position of the movable open tube 62 in the axial direction, that is, the height position is changed. As the movable open tube 62 moves in the axial direction, the communication port 62a also moves in the opening 61a in the axial direction. Thereby, the position of the communication port 62a in the axial direction, that is, the height position is changed. The movable open tube 62 is an example of a first adjustment unit.

  The overflow pipe 5 is provided at the center of the container 10 so as to extend along the axis of the container 10. The overflow pipe 5 has a smaller diameter than the atmosphere opening pipe 6 and is provided inside the atmosphere opening pipe 6. The overflow pipe 5 has a fixed flow pipe 51 fixed to the container 10 and a movable flow pipe 52 movable with respect to the fixed flow pipe 51.

  The fixed flow pipe 51 is fixed to the bottom 13 of the container 10. The lower part of the fixed flow pipe 51 extends through the bottom 13 to the outside of the container 10. The upper end of the fixed flow pipe 51 is open. A pipe for discharging the drain is connected to the lower end of the fixed flow pipe 51.

  The movable flow pipe 52 is slidably inserted into the fixed flow pipe 51 from the upper end of the fixed flow pipe 51. The movable flow pipe 52 is formed with a discharge port 52a for discharging the drain so as to penetrate the pipe wall. The discharge ports 52a are formed at two locations facing each other across the axis of the movable flow tube 52. The discharge port 52 a is located at a position higher than the communication port 62 a of the atmosphere release pipe 6. Part of the drain that has entered the internal space 62b from the storage portion 14 via the communication port 62a can be discharged from the discharge port 52a.

  The upper part of the movable flow pipe 52 is connected to the upper part of the movable open pipe 62 via the connecting part 53. That is, the movable flow pipe 52 moves integrally with the movable open pipe 62. When the movable open tube 62 moves in the axial direction, the movable flow tube 52 also moves in the axial direction, and the discharge port 52a also moves in the axial direction. Thereby, the position of the discharge port 52a in the axial direction, that is, the height position is changed. Since the movable flow pipe 52 moves integrally with the movable open pipe 62, even if the height position of the discharge port 52a changes, the distance in the height direction between the communication port 62a and the discharge port 52a remains constant. It is. The movable flow tube 52 is an example of a third adjustment unit.

  Further, a flexible tube 42 is connected to the movable open tube 62 via a stay 63. That is, the flexible tube 42 moves integrally with the movable open tube 62. The stay 63 is attached to the downstream end of the flexible tube 42. As the movable open tube 62 moves in the axial direction, the height of the flexible tube 42, specifically, the height of the downstream end of the flexible tube 42 changes. The downstream end of the flexible pipe 42 is located at a position lower than the discharge port 52a and higher than the communication port 62a.

  Operation | movement of the heat exchanger 100 comprised in this way is demonstrated.

  In the heat transfer pipe 3, cold water flows from the cold water supply pipe 31 toward the cold water discharge pipe 32. On the other hand, steam is supplied into the container 10 from the steam supply unit 2. The steam supplied into the container 10 is cooled and condensed by the heat transfer tube 3 to become drain. At this time, the heat of the steam is transmitted to the cold water through the heat transfer tube 3 and is recovered by the cold water.

  The drain adheres to the surface of the heat transfer tube 3, travels along the surface of the heat transfer tube 3, or drops from the surface of the heat transfer tube 3, and accumulates in the storage portion 14 of the container 10. The lower part of the heat transfer tube 3 is immersed in the drain of the storage unit 14. Therefore, the heat transfer tube 3 also exchanges heat with the drain of the storage unit 14. Thereby, the sensible heat of the drain is also recovered by the cold water.

  Thus, the cold water discharged from the cold water discharge pipe 32 becomes hot water. The hot water discharged from the cold water discharge pipe 32 can then be used for various purposes.

  The drain accumulated in the storage unit 14 also enters the internal space 62b of the atmosphere release pipe 6 through the communication port 62a. A space 10a outside the atmosphere open pipe 6 inside the container 10 and above the drain (hereinafter referred to as “upper space”) 10a is water-sealed by the drain that has entered the atmosphere open pipe 6, and the atmosphere open pipe 6 It is blocked from the internal space 62b. Thus, heat exchange can be performed between the steam and the heat transfer tube 3 in the upper space 10 a that is blocked from the outside of the container 10.

  The drain accumulated in the storage unit 14 is discharged through the discharge pipe 4. At this time, since the highest part of the discharge pipe 4 is located at a position higher than the bottom part 13 of the container 10, the drain accumulates in the storage part 14 to substantially the same height as the highest part of the discharge pipe 4. In the example of FIG. 1, the drain pipe 4 has the highest downstream end of the flexible pipe 42, so the drain liquid level in the reservoir 14 is substantially the same as the height of the downstream end of the flexible pipe 42. When the amount of drain generated is smaller than the amount of drain that can be discharged from the discharge pipe 4, the drain liquid level in the storage section 14 is maintained at substantially the same height as the highest part of the discharge pipe 4, and the drain exceeding that level. Is discharged from the discharge pipe 4. In the present disclosure, the amount of drain that can be stored in the storage unit 14 when the amount of drain generated is smaller than the amount of drain that can be discharged from the discharge pipe 4 is referred to as “normal capacity of the storage unit 14”.

  Here, when the amount of drain accumulated in the reservoir 14 is larger than the amount of drain that can be discharged from the discharge pipe 4, the drain liquid level in the container 10 rises beyond the highest part of the discharge pipe 4. To do. At this time, the liquid level of the drain in the internal space 62b of the atmospheric open pipe 6 also rises similarly. Eventually, when the liquid level of the drain in the internal space 62b reaches the discharge port 52a, the drain is discharged from the discharge port 52a. In the present disclosure, the amount of drain in the storage unit 14 when the drain reaches the discharge port 52a is referred to as “upper limit capacity of the storage unit 14”.

  Further, when the pressure of the upper space 10a is increased by the steam supplied into the container 10, the liquid level of the drain outside the atmosphere release pipe 6 is pushed down, while the pushed down drain enters the atmosphere release pipe 6, The liquid level of the drain in the internal space 62b rises. When the liquid level of the drain outside the atmosphere opening pipe 6 is lowered to the communication port 62a, the upper space 10a and the inner space 62a communicate with each other, and the vapor or air in the upper space 10a passes through the atmosphere opening pipe 6. Released into the container 10. In addition, when the liquid level of the drain in the internal space 62b reaches the height of the discharge port 52a, the drain is discharged from the discharge port 52a.

  Thus, the height of the highest part of the discharge pipe 4 determines the normal capacity of the storage part 14, that is, the liquid level of the drain that accumulates in the storage part 14 at the normal time. The height of the discharge port 52 a determines the upper limit capacity of the storage unit 14, that is, the upper limit liquid level of the drain accumulated in the storage unit 14. In other words, the distance in the height direction between the highest portion of the discharge pipe 4 and the discharge port 52a exceeds the allowance from the normal capacity to the upper limit capacity of the storage section 14, that is, the amount of drain that can be discharged from the discharge pipe 4. When the drain is generated, the amount of the drain that can be stored in the storage unit 14 exceeding the normal capacity is determined. Furthermore, the height of the communication port 62a determines the drain liquid level when the upper space 10a and the internal space 62b communicate with each other (that is, when the upper space 10a is opened to the atmosphere). In other words, the distance in the height direction between the highest portion of the discharge pipe 4 and the communication port 62a determines the upper limit pressure of the upper space 10a that can maintain the water seal of the communication port 62a.

  In the heat exchanger 100, the capacity of the heat exchanger 100 is adjusted by adjusting the height of the highest part of the discharge pipe 4, the discharge port 52a, and the communication port 62a. In FIG. 3, the typical longitudinal cross-sectional view of the heat exchanger 100 when the height position of the movable open pipe 62 is changed high is shown.

  Specifically, by changing the engagement hole 62c into which the pin 62d is inserted in the movable open pipe 62, the height position of the movable open pipe 62, that is, the height position of the communication port 62a is changed. The liquid level of the drain when the upper space 10a is opened to the atmosphere is adjusted by the height position of the communication port 62a. In the example of FIG. 3, the communication port 62a is raised.

  At this time, since the flexible tube 42 of the discharge tube 4 is connected to the movable open tube 62 via the stay 63, the flexible tube 42 also moves integrally with the movable open tube 62. Thereby, the downstream end of the flexible pipe 42, that is, the height position of the highest part of the discharge pipe 4 is also changed. As described above, when the height of the highest portion of the discharge pipe 4 is changed, the normal capacity of the storage unit 14, that is, the liquid level of the drain accumulated in the storage unit 14 at the normal time is changed. In the example of FIG. 3, the downstream end of the flexible pipe 42 is raised, and the liquid level of the normal capacity drain is also raised.

  The amount of heat exchange between the heat transfer tube 3 and the drain depends on the normal capacity of the storage unit 14. That is, the amount of heat exchange between the heat transfer tube 3 and the drain is adjusted by adjusting the height of the highest portion of the discharge tube 4. By increasing the height of the highest part of the discharge pipe 4, the normal capacity of the storage part 14 increases, and the amount of heat exchange between the heat transfer pipe 3 and the drain increases. On the other hand, by reducing the height of the highest part of the discharge pipe 4, the normal capacity of the storage part 14 is reduced, and the heat exchange amount between the heat transfer pipe 3 and the drain is reduced. For example, the ratio of the portion that exchanges heat with the steam and the portion that exchanges heat with the drain in the heat transfer tube 3 can vary depending on the system in which the heat exchanger 100 is incorporated or the usage status of the system. By adjusting the height of the highest part of the discharge pipe 4, the ratio of the heat exchange pipe 3 to the heat exchange part with the steam and the drain heat exchange part can be adapted to the system or the use situation of the system. .

  Here, since the flexible pipe 42 and the movable open pipe 62 are interlocked, the communication port 62 a also moves in the height direction together with the highest portion of the discharge pipe 4. That is, the distance in the height direction between the highest portion of the discharge pipe 4 and the communication port 62a is kept constant. Thereby, the normal capacity | capacitance of the storage part 14 can be adjusted, maintaining the upper limit pressure of the upper space 10a which can maintain the water seal of the communicating port 62a constant.

  In addition, since the movable flow pipe 52 is connected to the movable open pipe 62 via the connecting portion 53, the movable flow pipe 52 also moves integrally with the movable open pipe 62. Thereby, the height position of the discharge port 52a is also changed. In the example of FIG. 3, the discharge port 52a is raised. As described above, when the height of the discharge port 52a is changed, the upper limit capacity of the storage unit 14, that is, the upper limit liquid level of the drain accumulated in the storage unit 14 is changed. However, since not only the movable flow pipe 52 but also the flexible pipe 42 is interlocked with the movable open pipe 62, both the discharge port 52a and the highest part of the discharge pipe 4 move in the height direction. That is, the distance in the height direction between the discharge port 52a and the highest portion of the discharge pipe 4 is maintained constant. Thereby, the normal capacity | capacitance of the storage part 14 can be adjusted, maintaining the allowance from the normal capacity | capacitance of the storage part 14 to an upper limit capacity | capacitance constant.

  Thus, in the heat exchanger 100, since the relative positional relationship in the height direction of the highest part of the communication port 62a, the discharge port 52a, and the discharge pipe 4 is maintained, the upper limit pressure of the upper space 10a, and The normal capacity of the storage unit 14 can be adjusted while maintaining a margin from the normal capacity of the storage unit 14 to the upper limit capacity.

  As described above, the heat exchanger 100 exchanges heat with the container 10 provided with the storage unit 14 for storing drain (liquid) and the drain stored in the container 10 and stored at least in the storage unit 14. The heat transfer tube 3 (heat transfer part) and at least a part thereof are disposed in the storage part 14, the internal space 62 b is open to the outside of the container 10, and the communication port 62 a through which the internal space 62 b and the storage part 14 pass. An atmosphere open pipe 6 (open pipe) having at least a part disposed in the internal space 62b of the atmosphere open pipe 6 and a discharge port 52a formed at a position higher than the communication port 62a for discharging drain. The atmosphere open pipe 6 includes a movable open pipe 62 (first adjusting portion) that adjusts the height position of the communication port 62a.

  According to this configuration, the height position of the communication port 62 a is adjusted by the movable open tube 62. The height position of the communication port 62a determines the liquid level of the drain when the upper space of the drain in the container 10, that is, the upper space 10a and the inner space 62b communicate with each other. That is, the movable open pipe 62 can adjust the drain liquid level when the upper space 10 a is opened to the outside of the container 10 as one of the capacities of the heat exchanger 100.

  The heat exchanger 100 further includes a flexible pipe 42 (second adjustment unit) that adjusts the liquid level of the storage unit 14 between the communication port 62a and the discharge port 52a.

  According to this configuration, the liquid level of the reservoir 14 as one of the capacities of the heat exchanger 100 is adjusted by the flexible pipe 42.

  Further, the movable open pipe 62 and the flexible pipe 42 adjust the height position of the communication port 62a and the liquid level of the storage unit 14 while maintaining the height direction distance between the communication port 62a and the liquid level of the storage unit 14. .

  According to this configuration, even if the height position of the communication port 62a and the liquid level of the storage unit 14 are changed, the distance in the height direction between the communication port 62a and the liquid level of the storage unit 14 is maintained. The distance in the height direction between the communication port 62a and the liquid level of the reservoir 14 determines the upper limit pressure of the upper space 10a that can maintain the water seal of the communication port 62a. That is, the liquid level of the normal capacity of the reservoir 14 can be adjusted while maintaining the upper limit pressure of the upper space 10a.

  The overflow pipe 5 has a movable flow pipe 52 (third adjusting portion) that adjusts the height position of the discharge port 52a.

  According to this configuration, the height position of the discharge port 52 a is adjusted by the movable flow pipe 52. The height position of the discharge port 52 a determines the upper limit capacity of the storage unit 14, that is, the upper limit liquid level of the drain accumulated in the storage unit 14. In other words, the upper limit capacity of the storage unit 14 as one of the capacities of the heat exchanger 100 can be adjusted by the movable flow pipe 52.

  Further, the flexible pipe 42 and the movable flow pipe 52 adjust the liquid level of the storage unit 14 and the height position of the discharge port 52a while maintaining the height direction distance between the liquid level of the storage unit 14 and the discharge port 52a. .

  According to this configuration, even if the liquid level of the storage unit 14 and the height position of the discharge port 52a are changed, the distance in the height direction between the liquid level of the storage unit 14 and the discharge port 52a is maintained. The distance in the height direction between the liquid level of the reservoir 14 and the discharge port 52a exceeds the normal capacity when the drain is generated exceeding the amount of drain that can be discharged from the discharge pipe 4, and is stored in the reservoir 14. Determine the amount of drain that can be. That is, the liquid level of the normal capacity of the storage unit 14 can be adjusted while maintaining a margin from the normal capacity of the storage unit 14 to the upper limit capacity.

  Furthermore, the movable open pipe 62, the flexible pipe 42, and the movable flow pipe 52 are arranged at the height position of the communication port 62a while maintaining the distance in the height direction between the communication port 62a, the liquid level of the storage unit 14, and the discharge port 52a. The liquid level of the storage part 14 and the height position of the discharge port 52a are adjusted.

  According to this configuration, even if the communication port 62a, the liquid level of the storage unit 14, and the height position of the discharge port 52a are changed, the liquid level of the communication port 62a and the storage unit 14 and the height direction of the discharge port 52a are changed. The distance is maintained. That is, the liquid level of the normal capacity of the storage unit 14 can be adjusted while maintaining the upper limit pressure of the upper space 10a and the margin from the normal capacity to the upper limit capacity of the storage unit 14.

<< Other Embodiments >>
As described above, the embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed. Moreover, it is also possible to combine each component demonstrated by the said embodiment and it can also be set as a new embodiment. In addition, among the components described in the attached drawings and detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the technology. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings and detailed description.

  About the said embodiment, it is good also as following structures.

  For example, the configuration of each element of the heat exchanger 100 is merely an example, and various configurations can be employed.

  The heat exchanger 100 employs the heat transfer tube 3 as a heat transfer unit, but is not limited thereto. The heat transfer tube 3 may not be coiled. Further, the heat transfer tube 3 may be a fin tube type. Furthermore, the heat transfer unit may be a heat sink or the like.

  The heat exchange 100 is configured to recover the heat of the steam, but the target for heat exchange is not limited to steam. For example, the heat exchanger may be configured to recover heat by exchanging heat with a liquid such as water. In that case, the steam supply unit 2 is replaced with a water (liquid) supply unit. The container 10 is supplied with relatively high temperature water. The hot water and the heat transfer tube 3 exchange heat, and the heat is recovered into cold water. The water supplied into the container 10 is stored in the storage unit 14 and discharged through the discharge pipe 4 or the overflow pipe 5.

  In addition, the movable open pipe 62, the movable flow pipe 52, and the flexible pipe 42 are configured to move integrally, but are not limited thereto. For example, as shown in FIG. 4, the movable open pipe 62, the movable flow pipe 52, and the flexible pipe 42 may move separately.

  Specifically, the movable flow pipe 52 is slidably inserted into a guide hole 64 formed at the upper end of the movable open pipe 62 and is configured to be movable relative to the movable open pipe 62. Similar to the positioning of the movable open tube 62 with respect to the container 10, the movable flow tube 52 is positioned with respect to the movable open tube 62 by the engagement hole 52c and the pin 52d. The stay 63 is configured such that the length in the height direction can be adjusted. Thereby, the flexible tube 42 can move in the height direction relative to the movable open tube 62.

  According to this configuration, the movable open pipe 62, the movable flow pipe 52, and the flexible pipe 42 can move separately in the height direction. That is, the liquid level of the storage part 14, the upper limit pressure of the upper space 10a, and the allowance from the normal capacity to the upper limit capacity of the storage part 14 can be individually adjusted.

  In addition, the structure which adjusts the height position of the movable open pipe 62, the movable flow pipe | tube 52, and the flexible pipe | tube 42 is not restricted to these. For example, the movable flow pipe 52 may be movably supported on the bottom portion 13 of the container 10. The flexible tube 42 may be supported on the peripheral wall 11 of the container 10 so as to be movable in the height direction.

  Further, the configuration of the overflow pipe 5 is merely an example. For example, the configuration for guiding the movable flow pipe 52 in the height direction is not limited to the fixed flow pipe 51. The configuration for guiding the movable flow pipe 52 in the height direction may be a rail, a bearing, or the like. Moreover, although the discharge port 52a is exposed upward from the upper end of the fixed flow pipe | tube 51, it is not restricted to this. For example, the fixed flow pipe 51 may extend to a position higher than the discharge port 52 a, and an opening that exposes the discharge port 52 a may be formed on the tube wall of the fixed flow pipe 51.

  Furthermore, the configuration in which the height position of the discharge port 52a changes may be a configuration in which the height position of the lower edge of the discharge port 52a changes. For example, the discharge port 52a may be configured by an opening formed in the tube wall of the fixed flow tube 51 and a tube wall of the movable flow tube 52 configured to close the opening from below. That is, the discharge port 52 a is not formed in the movable flow tube 52, and the upper portion of the opening of the fixed flow tube 51 is partially blocked by the lower end portion of the movable flow tube 52. By moving the movable flow pipe 52 upward, the lower edge of the discharge port 52a rises. Since the discharge port 52a defines the liquid level at which the drain rising in the internal space 62b of the atmosphere opening pipe 6 starts to be discharged, the height position of the lower edge of the discharge port 52a is important. . Thus, the change of the height position of the discharge port 52a means the change of the height position of the lower edge of the discharge port 52a.

  The configuration of the air release pipe 6 is just an example. For example, the configuration for guiding the movable open tube 62 in the height direction is not limited to the fixed open tube 61. The configuration for guiding the movable open tube 62 in the height direction may be a rail, a bearing, or the like. The communication port 62a is exposed outward from the opening 61a of the fixed open tube 61, but is not limited thereto. For example, the communication port 62 a may be configured to be exposed upward from the upper end of the fixed open tube 61 like the discharge port 52 a of the overflow tube 5.

  Furthermore, the configuration in which the height position of the communication port 62a changes may be a configuration in which the height position of the upper edge of the communication port 62a changes. For example, the communication port 62a may be configured by an opening 61a formed in the tube wall of the fixed open tube 61 and a tube wall of the movable open tube 62 configured to close the opening 61a from above. . That is, the communication opening 62 a is not formed in the movable open tube 62, and the upper portion of the opening 61 a is partially blocked by the lower end portion of the movable open tube 62. By moving the movable open tube 62 downward, the upper edge of the communication port 62a is lowered. The communication port 62a defines a height at which the descending upper space 10a begins to communicate with the internal space 62b of the air release pipe 6 by pushing down the drain in the container 10, and therefore the communication port 62a has an upper edge of the communication port 62a. The height position is important. Thus, the change of the height position of the communication port 62a means the change of the height position of the upper edge of the communication port 62a.

  The discharge pipe 4 has a flexible pipe 42 whose height position can be freely changed, and is configured to adjust the liquid level of the storage section 14 by adjusting the height position of the flexible pipe 42. The configuration for adjusting the liquid level of 14 is not limited to this. For example, the discharge pipe 4 may include a common pipe connected to the container 10 and a plurality of branch pipes branched from the common pipe and arranged at different heights. The common pipe extends downward from the bottom 13 of the container 10 and then bends and extends upward. The plurality of branch pipes branch from a portion extending upward in the common pipe and extend in the horizontal direction. Each of the plurality of branch pipes is provided with a valve for switching communication / blocking. Depending on which one of the plurality of valves is opened, which one of the plurality of branch pipes communicates is switched. The normal capacity liquid level of the reservoir 14 is approximately the same height as the branch pipe to be communicated. That is, the normal capacity of the storage unit 14 is adjusted by switching the valve.

  Alternatively, the discharge pipe 4 may be provided with a control valve capable of adjusting the flow rate of the drain. By adjusting the opening of the control valve, the amount of drain discharged from the container 10 is adjusted, and as a result, the level of the normal capacity drain in the reservoir 14 is adjusted. In addition, the structure controlled based on the liquid level sensor which detects the liquid level of the storage part 14 may be sufficient as a control valve.

  As described above, the technology disclosed herein is useful for heat exchangers.

100 Heat Exchanger 10 Container 14 Storage Unit 3 Heat Transfer Tube (Heat Transfer Unit)
42 Flexible pipe (second adjusting part)
5 Overflow pipe 52 Movable flow pipe (3rd adjustment part)
52a Discharge port 6 Open air pipe (open pipe)
62 Movable open pipe (first adjusting part)
62a Communication port 62b Internal space

Claims (7)

A container provided with a reservoir for storing liquid;
A heat transfer section that is accommodated in the container and performs heat exchange with at least the liquid stored in the storage section;
An open pipe having at least a part disposed in the storage part, an internal space opened to the outside of the container, and a communication port through which the internal space and the storage part pass;
An overflow pipe that is disposed at least partially in the internal space of the open pipe and has a discharge port that is formed at a position higher than the communication port and discharges the liquid;
The open pipe has a first adjustment unit that adjusts the height position of the communication port. The heat exchanger according to claim 1,
The heat exchanger further comprising a second adjustment unit that adjusts the liquid level of the storage unit between the communication port and the discharge port. The heat exchanger according to claim 2,
The first adjustment unit and the second adjustment unit adjust the height position of the communication port and the liquid level of the storage unit while maintaining the height direction distance between the communication port and the liquid level of the storage unit. The heat exchanger characterized by doing. The heat exchanger according to claim 1,
The overflow pipe has a third adjusting portion for adjusting the height position of the discharge port. The heat exchanger according to claim 4, wherein
The heat exchanger further comprising a second adjustment unit that adjusts the liquid level of the storage unit between the communication port and the discharge port. The heat exchanger according to claim 5,
The second adjustment unit and the third adjustment unit adjust the liquid level of the storage unit and the height position of the discharge port while maintaining the height direction distance between the liquid level of the storage unit and the discharge port. The heat exchanger characterized by doing. The heat exchanger according to claim 5,
The first adjustment unit, the second adjustment unit, and the third adjustment unit are configured so that a height of the communication port is maintained while maintaining a distance in a height direction between the communication port, the liquid level of the storage unit, and the discharge port. A heat exchanger characterized by adjusting a position, a liquid level of the storage part, and a height position of the discharge port.

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