JP5943644B2 - Fluid cooling device - Google Patents

Description

The present invention relates to a fluid cooling equipment.

  Conventionally, as a cooling device (emergency core cooling device) for cooling a core disposed in a reactor vessel, for example, a device described in Patent Document 1 below has been adopted.

More specifically, the reactor vessel is filled with cooling water, and a reactor core is disposed in the cooling water. The reactor vessel is connected to a riser pipe and a water injection pipe. The riser pipe leads the cooling water in the reactor vessel to a water storage tank disposed outside, and the water injection pipe uses the water injection pipe to The cooling water is introduced into the reactor vessel.
Therefore, normally, the cooling water in the reactor vessel is led to the water storage tank via the riser pipe, and the cooling water in the water storage tank is introduced into the reactor vessel via the water injection pipe. Thus, the reactor core is cooled.

  On the other hand, if the coolant level falls below the lower end of the riser in an emergency where the coolant in the reactor vessel flows out, the steam in the reactor vessel accumulates through the riser. While being led out into the water tank, the cooling water in the water storage tank is introduced into the reactor vessel through the water injection pipe. Here, since the water storage tank is provided with a cooler, and the water injection pipe is provided with a radiator, the cooling water that is heated to high temperature by the steam and is led into the water storage tank is cooled by the cooler, Cool the cooling water flowing through the water injection pipe with a radiator. And it is the structure which cools a core by returning the cooled cooling water to a nuclear reactor containment vessel.

JP-A-62-212594

  However, in the cooling device described in Patent Document 1, since the cooling water becomes very hot in an emergency, the cooling water in the water storage tank is cooled by the cooler and the cooling water in the water injection pipe is cooled by the radiator. Since it takes time to cool the core, there is a problem that the core cannot be cooled in a short time.

The present invention has been made in view of such circumstances, and is capable of cooling the steam in the reactor containment vessel in a short time, and fluid cooling that can improve the reliability of the reactor containment vessel. it is intended to provide the equipment.

In order to achieve the above object, the present invention employs the following means.
That is, the fluid cooling apparatus according to the present invention introduces a working fluid vaporized by an evaporator provided in a reactor containment vessel into a condenser provided outside the reactor containment vessel, and liquefies the same by the condenser. The working fluid thus introduced is introduced into the evaporator, so that heat is exchanged inside and outside the reactor containment vessel, and outside the reactor containment vessel, and gas is heated by receiving sunlight. An airflow generation unit that generates a main airflow and an incentive airflow passage that causes the inductive airflow induced by the main airflow to pass through the condenser are provided.

In such a fluid cooling device, the steam in the reactor containment vessel and the working fluid in the evaporator are subjected to heat exchange, the working fluid is vaporized and introduced into the condenser, and the temperature of the steam is lowered. Then, heat is exchanged between the gas around the condenser and the working fluid introduced into the condenser, the working fluid is liquefied and returned to the evaporator, and can be used again for heat exchange in the evaporator. Therefore, the steam in the reactor containment vessel can be cooled by heat exchange.
Here, the induced airflow is formed by the main airflow generated by the airflow generation unit, and the induced airflow flows along the induced airflow passage passing through the condenser. Therefore, the gas can be supplied to the condenser by the induced airflow that flows through the induced airflow passage around the condenser. Therefore, for example, even when there is no power supply, the induced airflow passage can be secured, so that the steam in the reactor containment vessel can be cooled in a short time, and the reliability of the reactor containment vessel is improved. Can do.

  In addition, the fluid cooling device according to the present invention includes a chimney adjacent to the condenser and extending upward, and the airflow generation unit includes a solar energy acquisition unit that acquires solar energy, It is preferable that the solar energy emission part which discharge | releases the said solar energy acquired by the energy acquisition part is provided, and the said solar energy emission part is arrange | positioned at the said chimney part.

  In such a fluid cooling device, the gas around the condenser is heat-exchanged by the condenser, becomes a high temperature state, and flows upward above the chimney. Furthermore, since the solar energy emission part which discharge | releases solar energy is arrange | positioned in the chimney part, an updraft is produced with discharge | release of solar energy. Here, when the high-temperature gas rises inside the chimney, the pressure below the chimney becomes negative and a large amount of gas flows into the chimney. Therefore, since a large amount of gas can be used for heat exchange in the condenser, the steam in the reactor containment vessel can be efficiently cooled in a short time.

  Further, in the fluid cooling device according to the present invention, the induced airflow passage may include a gas introduction portion that is provided in a lower portion of the condenser and introduces the gas.

  In such a fluid cooling device, since the gas introduction part is provided in the lower part of the condenser, the amount of the inducing airflow flowing through the inducing airflow channel can be increased. Therefore, since the gas utilized for heat exchange in the condenser can be increased, the steam in the reactor containment vessel can be efficiently cooled in a short time by heat exchange.

  Moreover, the fluid cooling device which concerns on this invention WHEREIN: The said airflow generation part may have the solar energy aggregation part which aggregates the said solar energy.

  In such a fluid cooling device, the solar energy can be collected by the solar energy collecting unit to efficiently acquire the solar energy, and the solar energy emitted from the solar energy emitting unit can be increased. Therefore, since an ascending air current can be generated effectively, a large amount of gas can be used for heat exchange in the condenser, and the steam in the reactor containment vessel can be cooled efficiently and in a short time.

  Further, in the fluid cooling device according to the present invention, the airflow generation unit may include a fan that operates by solar energy emitted from the solar energy emission unit.

  In such a fluid cooling device, solar energy can be rectified and discharged by a fan. Therefore, ascending airflow can be generated effectively, so that a large amount of gas can be used for heat exchange in the condenser, and the steam in the reactor containment vessel can be cooled efficiently and in a short time. .

  Further, in the fluid cooling device according to the present invention, the airflow generation unit releases the solar energy stored in the solar energy storage unit and the solar energy storage unit that stores the solar energy acquired in the solar energy acquisition unit. And a stored energy release portion.

  In such a fluid cooling device, the solar energy stored in the solar energy storage unit can be released from the stored energy discharge unit. Therefore, even in a situation where solar energy cannot be acquired, the solar energy that has already been acquired and stored can be used. Therefore, since an updraft can be generated, a large amount of gas can be used for heat exchange in the condenser, and the steam in the reactor containment vessel can be reliably cooled.

  Further, in the fluid cooling device according to the present invention, the stored energy discharge portion may be disposed in the chimney portion.

  In such a fluid cooling device, since the storage energy discharge part which discharge | releases solar energy is arrange | positioned in the chimney part, the upward air flow is produced reliably with discharge | release of solar energy. Here, when the high-temperature gas rises inside the chimney, the pressure below the chimney becomes negative and a large amount of gas flows into the chimney. Therefore, since a large amount of gas can be used for heat exchange in the condenser, the steam in the reactor containment vessel can be efficiently cooled in a short time.

  Further, in the fluid cooling device according to the present invention, the evaporator has a flow pipe through which the working fluid flows, and the flow pipe is provided with an obstacle portion that disturbs the flow of the working fluid on an inner wall thereof. May be.

  In such a fluid cooling device, the flow of the working fluid is disturbed by the obstacle, and the heat transfer rate is improved. Therefore, since it is possible to circulate while maintaining the temperature of the working fluid, the evaporator can efficiently exchange heat with the steam in the reactor containment vessel, and the steam can be cooled efficiently and in a short time. Can do.

  In the fluid cooling device according to the present invention, the obstacle portion may be formed of a sintered metal.

  In such a fluid cooling device, since the inside of the obstacle is made of sintered metal, the heat transfer area is increased and the heat transfer coefficient is reliably improved. Therefore, since the working fluid can be circulated while maintaining the temperature, it is possible to exchange heat efficiently and in a short time with the steam in the reactor containment vessel in the evaporator. Can be cooled.

  In the fluid cooling device according to the present invention, the obstacle part may have a convex part protruding from the surface of the inner wall and a concave part recessed from the surface of the inner wall.

  In such a fluid cooling device, since the inside of the obstacle portion has a convex portion and a concave portion, the heat transfer area is increased and the heat transfer coefficient is reliably improved. Therefore, since it can distribute | circulate, maintaining the temperature of a working fluid, it can exchange heat with the vapor | steam in a reactor containment vessel efficiently and in a short time, and cools a vapor | steam efficiently and in a short time. be able to.

According to the fluid cooling equipment according to the present invention, it is possible to supply the gas to the condenser by incentives airflow flowing incentives airflow passageway around the condenser, a short time the cooling steam of the reactor containment vessel The reliability of the reactor containment vessel can be improved.

It is a schematic block diagram which shows the nuclear reactor equipment provided with the fluid cooling device which concerns on 1st embodiment of this invention. It is an enlarged block diagram which shows the structure of the airflow generation part which comprises the fluid cooling device which concerns on 2nd embodiment of this invention. It is an enlarged block diagram which shows the structure of the airflow generation part which comprises the fluid cooling device which concerns on 3rd embodiment of this invention. It is an expanded block diagram which shows the structure of the airflow generation part which comprises the fluid cooling device which concerns on 4th embodiment of this invention. It is a schematic diagram which shows the structure of the airflow generation part which comprises the fluid cooling device which concerns on 4th embodiment of this invention. It is a schematic diagram of the evaporator which comprises the fluid cooling device which concerns on 5th embodiment of this invention. It is a sectional view of the evaporator which constitutes the fluid cooling device concerning a fifth embodiment of the present invention. It is an inner surface figure of the evaporator which comprises the fluid cooling device which concerns on 6th embodiment of this invention. It is one sectional drawing of the evaporator which comprises the fluid cooling device which concerns on 6th embodiment of this invention.

(First embodiment)
Hereinafter, with reference to the drawings, a reactor facility including a fluid cooling device according to a first embodiment of the present invention will be described.
FIG. 1 is a schematic configuration diagram showing a nuclear reactor facility equipped with a fluid cooling device according to a first embodiment of the present invention.
As shown in FIG. 1, a nuclear reactor facility 2 is arranged adjacent to the nuclear reactor containment vessel 11 in which the nuclear reactor 12 is accommodated, and is generated from the nuclear reactor containment vessel 11. A cooling tower 16 for cooling the steam, and a fluid cooling device 1 disposed across the reactor containment vessel 11 and the cooling tower 16 are provided.

  The nuclear reactor containment vessel 11 includes a nuclear reactor 12 and a steam generator 13 that is connected to the nuclear reactor 12 through a cooling water pipe 14 and generates steam by heat extracted from the nuclear reactor 12.

  The fluid cooling device 1 includes a heat exchanger 20 that performs heat exchange, a chimney 30 provided in the cooling tower 16, an airflow generator 40 that generates a main airflow R, and a flow path that passes through the heat exchanger 20. And an induced airflow passage 50 formed.

  The heat exchanger 20 includes an evaporator 21 installed in the reactor containment vessel 11, a first connection pipe 22 connected to the evaporator 21, and a cooling tower 16 connected to the first connection pipe 22. And a second connecting pipe 24 connected to the condenser 23.

  The evaporator 21 cools the steam and vaporizes the working fluid by exchanging heat between the steam in the reactor containment vessel 11 and the working fluid inside.

  The first connection pipe 22 has one end connected to the evaporator 21 and the other end connected to the condenser 23, and the working fluid vaporized by the evaporator 21 is led out from the evaporator 21 and introduced into the condenser 23. To do. The first connection pipe 22 is formed so as to incline upward from the evaporator 21 toward the condenser 23. In the present embodiment, the first connecting pipe 22 is connected to the evaporator 21 and extends substantially horizontally, and the first inlet 22A extends upward from the end of the first inlet 22A. The intermediate portion 22B has a first lead-out portion 22C that extends in a substantially horizontal direction from the end portion of the first intermediate portion 22B and is connected to the condenser 23.

  The condenser 23 is installed in the cooling tower 16 and heat-exchanges the vaporized working fluid introduced from the first connection pipe 22 with the gas in the cooling tower 16, thereby increasing the temperature of the gas and the working fluid. Liquefy.

  The second connection pipe 24 has one end connected to the condenser 23 and the other end connected to the evaporator 21, and the working fluid liquefied by the condenser 23 is led out from the condenser 23 and introduced into the evaporator 21. To do. The second connection pipe 24 is formed so as to incline downward from the condenser 23 toward the evaporator 21. In the present embodiment, the second connection pipe 24 is connected to the evaporator 21 and extends substantially horizontally, and the second introduction part 24A extends downward from the end of the second introduction part 24A. The intermediate portion 24B has a second lead-out portion 24C that extends in a substantially horizontal direction from the end portion of the second intermediate portion 24B and is connected to the evaporator 21.

  In this manner, the heat exchanger 20 performs heat exchange between the evaporator 21 installed inside the reactor containment vessel 11 and the condenser 23 installed outside the reactor containment vessel 11. .

  The chimney 30 is a cylindrical member extending upward provided adjacent to the condenser 23 in the cooling tower 16, and an opening 31 is formed in the upper part.

  The airflow generation unit 40 includes a solar energy acquisition unit 41 that acquires (receives) solar energy (sunlight), and a solar energy release unit 42 that releases solar energy acquired by the solar energy acquisition unit 41. .

  In this embodiment, the airflow generation unit 40 is provided across the inside and outside of the reactor containment vessel 11. For example, the solar energy acquisition unit 41 is placed on the plane G provided outside the cooling tower 16, and the solar energy release unit 42 is placed on the floor surface F that is the lower part of the chimney 30.

  The inducing airflow passage 50 is provided in the lower part of the condenser 23 and has a gas introduction part 51 for introducing outside air (gas) into the inside.

Next, the gas flow path in the cooling tower 16 configured as described above will be described.
Here, in the solar energy emission part 42, the solar energy acquired by the solar energy acquisition part 41 is emitted as heat. By this discharge, the gas in the cooling tower 16 is heated, and a main airflow R is generated upward from the solar energy discharge portion 42.
On the other hand, the outside air introduced from the gas introduction part 51 provided in the lower part of the condenser 23 is induced by the main airflow R and led to the condenser 23 side, and is brought into a high temperature state by heat exchange in the condenser 23. It flows from the condenser 23 side shown in FIG. 1 to the chimney 30 side so as to cross the condenser 23. And the gas introduce | transduced into the chimney part 30 distribute | circulates toward the upper direction which is the extension direction of the chimney part 30. FIG. In this way, the gas flow path described above is configured as the inducing airflow passage 50, and an upward airflow in which the gas flows upward is generated in the chimney 30.

  In the nuclear reactor facility 2 including the fluid cooling device 1 configured as described above, the steam in the reactor containment vessel 11 can be cooled by exchanging heat with the working fluid in the evaporator 21. Further, the working fluid vaporized by the evaporator 21 is introduced into the condenser 23 installed in the cooling tower 16 via the first connection pipe 22, and the vaporized working fluid is heated with the gas in the cooling tower 16 and heat. It can be exchanged and liquefied. Further, the liquefied working fluid can be introduced into the evaporator 21 via the second connection pipe 24 and used again for heat exchange in the evaporator 21. Therefore, the steam in the reactor containment vessel 11 can be continuously cooled by heat exchange.

  In addition, since the inducing airflow S flows along the inducing airflow passage 50 that passes through the condenser 23, the gas inside the cooling tower 16 can be supplied to the condenser 23. Therefore, for example, even when there is no power supply, the induced airflow passage 50 can be secured, so that the steam in the reactor containment vessel 11 can be cooled in a short time, and the reliability of the reactor containment vessel 11 can be improved. Can be improved.

  Ascending airflow is generated in the chimney 30, and when high-temperature gas rises inside the chimney 30, the pressure below the chimney 30 becomes negative and a large amount of gas flows into the chimney 30. Therefore, since a large amount of gas can be used for heat exchange in the condenser 23, the steam in the reactor containment vessel 11 can be cooled efficiently and in a short time.

  Moreover, since the gas introduction part 51 is provided in the lower part of the condenser 23, the quantity of the induced airflow S which distribute | circulates the induced airflow path 50 can be increased. Therefore, since the gas used for heat exchange in the condenser 23 can be increased, the steam in the reactor containment vessel 11 can be efficiently cooled in a short time by heat exchange.

  Further, since the first connection pipe 22 is formed so as to incline upward from the evaporator 21 toward the condenser 23, the working fluid vaporized by the evaporator 21 can be reliably introduced into the condenser 23. it can. Further, since the second connection pipe 24 is formed so as to incline downward from the condenser 23 toward the evaporator 21, the working fluid liquefied by the condenser 23 can be reliably introduced into the evaporator 21. it can. Therefore, since heat can be reliably exchanged by the heat exchanger 20, the steam in the reactor containment vessel 11 can be reliably cooled.

(Second embodiment)
Hereinafter, the fluid cooling device 201 according to the second embodiment of the present invention will be described with reference to FIG.
In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  In the fluid cooling device 201 in the present embodiment, in addition to the constituent members of the fluid cooling device 1 according to the first embodiment, a solar energy aggregating unit 243 is provided as the airflow generation unit 240.

That is, the airflow generation unit 240 according to the fluid cooling device 201 includes a solar energy aggregation unit 243 that aggregates solar energy. As the solar energy aggregating unit 243, for example, a reflecting mirror, a prism, a lens, or the like is employed.
The solar energy collecting unit 243 collects solar energy, and the solar energy acquiring unit 41 acquires the collected solar energy.

  In the fluid cooling device 201 configured as described above, solar energy can be reflected and aggregated by the solar energy aggregating unit 243, so that the solar energy acquired by the solar energy acquiring unit 41 can be increased. In connection with this, the solar energy emitted from the solar energy emission part 42 can be increased. Therefore, since the updraft in the chimney 30 can be generated effectively, a large amount of gas can be used for heat exchange in the condenser 23, and the steam in the reactor containment vessel 11 (see FIG. 1, the same applies hereinafter). Can be efficiently cooled.

(Third embodiment)
Hereinafter, a fluid cooling device 301 according to a third embodiment of the present invention will be described with reference to FIG.
In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  In the fluid cooling device 301 according to the present embodiment, a fan 344 is provided as the airflow generation unit 340 in addition to the constituent members of the fluid cooling device 1 according to the first embodiment.

That is, the airflow generation unit 340 according to the fluid cooling device 301 includes a fan 344 that operates by solar energy emitted from the solar energy emission unit 42.
The fan 344 is connected to the solar energy emitting unit 42 and is disposed below the chimney 30. The fan 344 operates by converting solar energy emitted from the solar energy emitting unit 42 into electricity in a conversion unit (not shown).

  In the fluid cooling device 301 configured as described above, the solar energy emission unit 42 emits the solar energy acquired by the solar energy acquisition unit 41 to operate the fan 344. The fan 344 can rectify and release solar energy from the solar energy emitting portion 42. Therefore, since the ascending air current in the chimney 30 can be generated effectively, a large amount of gas can be used for heat exchange in the condenser 23, and the steam in the reactor containment vessel 11 can be efficiently cooled. Can do.

(Fourth embodiment)
Hereinafter, a fluid cooling device 401 according to a fourth embodiment of the present invention will be described with reference to FIGS. 4 and 5.
In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  As shown in FIG. 4, the fluid cooling device 401 according to this embodiment includes a solar energy storage unit 445 as an airflow generation unit 440 in addition to the constituent members of the fluid cooling device 1 according to the first embodiment, and emits solar energy. Instead of the part 42, a storage energy discharge part 446 is provided.

  That is, the airflow generation unit 440 in the fluid cooling device 401 includes a solar energy acquisition unit 41 that acquires solar energy, a solar energy storage unit 445 that stores solar energy acquired by the solar energy acquisition unit 41, and the solar energy storage. And a storage energy emitting unit 446 that emits solar energy stored in the unit 445.

As shown in FIG. 5, in the present embodiment, for example, a plurality of tubular members 447 communicating with the inside and outside of the cooling tower 16 are disposed, and a liquid 448 such as water circulates inside the tubular member 447. Of the tubular member 447 and the liquid 448, the portion disposed outside the cooling tower 16 constitutes the solar energy acquisition unit 41, and the portion disposed inside the cooling tower 16 serves as the solar energy storage unit 445. It is composed. The solar energy storage unit 445 is disposed on the floor surface F, which is the lower part of the chimney unit 30.
Further, the upper surface of the solar energy storage unit 445 is covered with a stored energy emission unit 446.

  In addition, as the solar energy storage part 445, you may be comprised with members, such as a hydrate salt type heat storage material and an organic substance type heat storage material. Specific examples include paraffin, fatty acid, inorganic hydrated salt, molten salt, high-density polyethylene, and metal.

  In the fluid cooling device 401 configured as described above, the solar energy stored in the solar energy storage unit 445 can be released from the stored energy release unit 446. Therefore, even in a situation where solar energy cannot be acquired, the solar energy that has already been acquired and stored can be used and released. Therefore, since an ascending air current can be generated, a large amount of gas can be used for heat exchange in the condenser 23, and the steam in the reactor containment vessel 11 can be reliably cooled.

  Moreover, since the storage energy discharge | release part 446 which discharge | releases solar energy is arrange | positioned in the chimney part 30, an updraft is produced reliably with discharge | release of solar energy. Here, when the high-temperature gas rises inside the chimney part 30, the lower part of the chimney part 30 has a negative pressure, and a large amount of gas flows into the chimney part 30. Therefore, since a large amount of gas can be used for heat exchange in the condenser 23, the steam in the reactor containment vessel 11 can be efficiently cooled.

(Fifth embodiment)
Hereinafter, a fluid cooling device 501 according to a fifth embodiment of the present invention will be described with reference to FIGS. 6 and 7.
In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  The fluid cooling device 501 in the present embodiment is configured by a flow pipe 525 in which an obstacle portion 526 is provided as the evaporator 21 in addition to the constituent members of the fluid cooling device 1 according to the first embodiment.

As shown in FIG. 6, the evaporator 21 in the fluid cooling device 501 has a plurality of flow pipes 525 through which the working fluid flows.
As shown in FIG. 7, the flow pipe 525 is provided with an obstruction 526 that disturbs the flow of the working fluid on the inner wall thereof. In the present embodiment, the obstacle portion 526 is formed of a sintered metal portion made of sintered metal.

The sintered metal portion may be configured by sintering the inner wall of the flow pipe 525, or may be formed by forming the sintered metal into a cylindrical shape and disposing it inside the flow pipe 525. Good.
Further, unevenness (not shown) is formed on the surface of the sintered metal portion.

  In the fluid cooling device 501 configured as described above, the heat transfer area is increased by the sintered metal portion, and boiling nuclei can be generated in the gaps of the sintered metal. Therefore, the flow of the working fluid can be disturbed and the heat transfer rate can be reliably improved, so that it can be circulated while maintaining the temperature of the working fluid. Therefore, since the evaporator 21 can efficiently exchange heat with the steam in the reactor containment vessel 11 in a short time, the steam can be efficiently cooled in a short time.

(Sixth embodiment)
Hereinafter, a fluid cooling device 601 according to a sixth embodiment of the present invention will be described with reference to FIGS. 8 and 9.
In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  The obstacle 526 of the flow pipe 525 constituting the evaporator 21 in the fluid cooling device 501 in the fifth embodiment is formed of sintered metal, whereas in this embodiment, it is provided on the surface of the inner wall of the flow pipe 625. The protrusion 627 and the recess 628 are provided.

That is, the obstacle portion 626 has a plurality of convex portions 627 protruding from the surface of the inner wall of the flow pipe 525 and a plurality of concave portions 628 recessed from the surface.
As the recess 628, for example, a small depression by dimple processing or the like is employed.

  In the fluid cooling device 601 configured as described above, the obstacle portion 626 includes the convex portion 627 and the concave portion 628, so that the heat transfer area increases and the heat transfer coefficient is reliably improved. Further, since the flow of the working fluid flowing through the inside of the flow pipe 625 can be disturbed by the convex portion 627 and the concave portion 628, the boiling of the working fluid can be promoted to improve the thermal efficiency, and the temperature of the working fluid can be increased. It is possible to efficiently increase the temperature and maintain the temperature. Therefore, since the evaporator 21 can exchange heat efficiently with the steam in the reactor containment vessel 11 in a short time, the steam can be efficiently cooled in a short time.

  It should be noted that the assembly procedure shown in the above-described embodiment, or the shapes and combinations of the constituent members are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the present embodiment, one gas introduction part 51 is provided at the lower part of the condenser 23, but a plurality of gas introduction parts 51 may be provided. Thereby, the amount of the incentive airflow S passing through the incentive airflow passage 50 can be further increased. Therefore, the steam in the reactor containment vessel 11 can be cooled more efficiently and in a short time by heat exchange.

  Moreover, in Embodiment 5 and 6 shown above, although the obstruction part 526,626 is provided in the flow pipes 525,625 which comprise the evaporator 21 which concerns on the fluid cooling device 501,601, it is only the evaporator 21. The structure provided in the flow pipes 525 and 625 that constitute the

  Further, when the chimney 30 is not provided in the cooling tower 16, if an opening is provided in the wall portion (the left wall portion of the cooling tower 16 in FIG. 1) facing the condenser 23 in the cooling tower 16, the gas It is possible to secure the inducing airflow passage so that the outside air introduced from the introduction part 51 crosses the condenser 23 (crosses from the right side to the left side of the condenser 23 in FIG. 1). Therefore, even in this case, the steam in the reactor containment vessel 11 can be cooled in a short period of time.

DESCRIPTION OF SYMBOLS 1, 201, 301, 401, 501, 601 ... Liquid cooling device 11 ... Reactor containment vessel 20 ... Heat exchanger 21 ... Evaporator 23 ... Condenser 30 ... Chimney part 40, 240, 340, 440 ... Airflow generation part 41 ... Solar energy acquisition part 42 ... Solar energy release part 50 ... Incentive airflow passage 51 ... Gas introduction part 243 ... Solar energy aggregation part 344 ... Fan 445 ... Solar energy storage part 446 ... Storage energy release part 525, 625 ... Distribution pipe 526 626 ... Obstacle 627 ... Convex 628 ... Concave R ... Main airflow S ... Induced airflow

Claims (10)

A working fluid vaporized by an evaporator provided in a reactor containment vessel is introduced into a condenser provided outside the reactor containment vessel, and the working fluid liquefied by the condenser is introduced into the evaporator. A heat exchanger for exchanging heat inside and outside the reactor containment vessel,
An airflow generator provided outside the reactor containment vessel and generating a main airflow by heating gas by receiving sunlight; and
A fluid cooling device comprising: an induced airflow passage for causing an induced airflow induced by the main airflow to flow so as to pass through the condenser. The fluid cooling device according to claim 1 ,
The fluid cooling device according to claim 1, wherein the inducing airflow passage includes a gas introduction portion that is provided in a lower portion of the condenser and introduces the gas. The fluid cooling device according to claim 1 or 2 ,
A chimney adjacent to the condenser and extending upward;
The air flow generation unit includes a solar energy acquisition unit that acquires solar energy, and a solar energy emission unit that releases the solar energy acquired by the solar energy acquisition unit,
The fluid cooling device according to claim 1, wherein the solar energy emitting portion is disposed in the chimney portion. The fluid cooling device according to claim 3, wherein
The air flow generation unit includes a solar energy aggregation unit that aggregates the solar energy. The fluid cooling device according to claim 3 or 4 ,
The fluid cooling device according to claim 1, wherein the air flow generation unit includes a fan that is operated by solar energy emitted from the solar energy emission unit. The fluid cooling device according to any one of claims 3 or we claim 5,
The airflow generation unit includes a solar energy storage unit that stores the solar energy acquired by the solar energy acquisition unit, and a storage energy release unit that releases the solar energy stored in the solar energy storage unit. Fluid cooling device. The fluid cooling device according to claim 6, wherein
The fluid cooling device according to claim 1, wherein the stored energy discharge portion is disposed in the chimney portion. In the fluid cooling device according to any one of claims 1 to 7,
The evaporator has a flow pipe for flowing the working fluid,
The fluid cooling device according to claim 1, wherein the flow pipe is provided with an obstacle on the inner wall for disturbing the flow of the working fluid. The fluid cooling device according to claim 8, wherein
The fluid cooling device according to claim 1, wherein the obstacle portion is made of sintered metal. The fluid cooling device according to claim 8, wherein
The fluid cooling device according to claim 1, wherein the obstruction has a convex portion protruding from the surface of the inner wall and a concave portion recessed from the surface of the inner wall.

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