CA3227760A1 - Passive residual heat removal device and horizontal micro-reactor system - Google Patents
Passive residual heat removal device and horizontal micro-reactor system Download PDFInfo
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- CA3227760A1 CA3227760A1 CA3227760A CA3227760A CA3227760A1 CA 3227760 A1 CA3227760 A1 CA 3227760A1 CA 3227760 A CA3227760 A CA 3227760A CA 3227760 A CA3227760 A CA 3227760A CA 3227760 A1 CA3227760 A1 CA 3227760A1
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- insulation shell
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- 238000009413 insulation Methods 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000013461 design Methods 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
A passive residual heat removal device for a horizontal micro-reactor includes a shielding insulation shell and a deflector. The shielding insulation shell is arranged on an outside of a reactor pressure vessel. The deflector is arranged between the shielding insulation shell and the reactor pressure vessel, to divide a flow space for air in the shielding insulation shell into an inside flow path and an outside flow path. Air in the inside flow path flows from front and rear ends of the deflector to the outside flow path. The shielding insulation shell includes an air inlet and an air outlet, the air inlet connected to the deflector in a sealed manner by an air intake channel. Cold air is introduced into the inside flow path via the air inlet for direct cooling of the reactor pressure vessel. High-temperature air from the outside flow path is discharged via the air outlet.
Description
PASSIVE RESIDUAL HEAT REMOVAL DEVICE AND MINIATURE
HORIZONTAL REACTOR SYSTEM
[0001] The present disclosure claims priority from Chinese application No.
202111361226.0, entitled "PASSIVE RESIDUAL HEAT REMOVAL DEVICE OF
HORIZONTAL MICRO-REACTOR" filed on November 17, 2021.
TECHNICAL FIELD
HORIZONTAL REACTOR SYSTEM
[0001] The present disclosure claims priority from Chinese application No.
202111361226.0, entitled "PASSIVE RESIDUAL HEAT REMOVAL DEVICE OF
HORIZONTAL MICRO-REACTOR" filed on November 17, 2021.
TECHNICAL FIELD
[0002] The present disclosure belongs to the field of reactor technology, and particularly relates to a passive residual heat removal device and a horizontal micro-reactor system including the same.
BACKGROUND
BACKGROUND
[0003] The residual heat removal system of a reactor is one of the important systems of a nuclear power plant, and the reliable operation of the system is directly related to the safety of the reactor after shutdown. In order to further enhance the inherent safety of the reactor, the research and development of advanced reactor type gradually adopt a passive device design, i.e. the residual heat of the reactor core is discharged only by establishing a stable natural circulation without providing external active facilities. The existing passive residual heat removal system is mainly designed to be cooled with air or water. When an air cooling design is adopted, additional auxiliary facilities are generally not required. In this case, a natural circulation flow path can be constructed based on the reactor structure body, in which case the system is much more simplified.
When a water cooling design is adopted, special facilities and devices are required for the flow and heat transfer of the circulating cooling water.
When a water cooling design is adopted, special facilities and devices are required for the flow and heat transfer of the circulating cooling water.
[0004] For a micro-reactor, in order to further simplify the system, an air-cooled passive residual heat removal device may be adopted, but the existing design has the following defects:
1) a pressure vessel of the micro-reactor is small in size and limited in heat dissipation area, which directly restricts the heat dissipation capacity of the passive residual heat removal device;
2) the pressure vessel adopts a horizontal arrangement mode, thus the surface temperature gradient direction is perpendicular to the gravity direction, which is unfavorable for the formation of a natural circulation driving force;
3) the micro-reactor has limited building space, which restricts the overall size of the passive residual heat removal device.
SUMMARY
1) a pressure vessel of the micro-reactor is small in size and limited in heat dissipation area, which directly restricts the heat dissipation capacity of the passive residual heat removal device;
2) the pressure vessel adopts a horizontal arrangement mode, thus the surface temperature gradient direction is perpendicular to the gravity direction, which is unfavorable for the formation of a natural circulation driving force;
3) the micro-reactor has limited building space, which restricts the overall size of the passive residual heat removal device.
SUMMARY
[0005] In order to address the above defects in the existing technology, the present disclosure provides a passive residual heat removal device and a horizontal micro-reactor system including the same, where the device can significantly improve the heat removal capacity by optimizing the construction of the flow path without additional auxiliary facilities, and address the restriction on the size and the requirement on the capacity of the passive residual heat removal device.
[0006] In a first aspect, the present disclosure provides a passive residual heat removal device, which has the following technical solution:
a passive residual heat removal device including a shielding heat-insulation shell and an air deflector, wherein the shielding heat-insulation shell is arranged on an outer side of a reactor pressure vessel; the air deflector is arranged inside the shielding heat-insulation shell and is arranged on the outer side of the reactor pressure vessel in a covering manner such that an air flow space in the shielding heat-insulation shell is divided into an inside flow path between the air deflector and the reactor pressure vessel and an outside flow path between the air deflector and the shielding heat-insulation shell, and air in the inside flow path flows from front and rear ends of the air deflector to the outside flow path; and wherein the shielding heat-insulation shell is provided with an air inlet and an air outlet, the air inlet is in sealed connection with the air deflector through an air intake passage, cold air in an environment is introduced into the inside flow path through the air inlet for directly cooling the reactor pressure vessel; and high-temperature air in the outside flow path is discharged to the environment through the air outlet.
a passive residual heat removal device including a shielding heat-insulation shell and an air deflector, wherein the shielding heat-insulation shell is arranged on an outer side of a reactor pressure vessel; the air deflector is arranged inside the shielding heat-insulation shell and is arranged on the outer side of the reactor pressure vessel in a covering manner such that an air flow space in the shielding heat-insulation shell is divided into an inside flow path between the air deflector and the reactor pressure vessel and an outside flow path between the air deflector and the shielding heat-insulation shell, and air in the inside flow path flows from front and rear ends of the air deflector to the outside flow path; and wherein the shielding heat-insulation shell is provided with an air inlet and an air outlet, the air inlet is in sealed connection with the air deflector through an air intake passage, cold air in an environment is introduced into the inside flow path through the air inlet for directly cooling the reactor pressure vessel; and high-temperature air in the outside flow path is discharged to the environment through the air outlet.
[0007] In a second aspect, the present disclosure provides a horizontal micro-reactor system, which has the following technical solution:
a micro-reactor system including a reactor pressure vessel and the passive residual heat removal device described above.
a micro-reactor system including a reactor pressure vessel and the passive residual heat removal device described above.
[0008] The advantageous effects of the present disclosure over the existing technology are:
1. By additionally providing the air deflector, the flow path for air can be optimized, and a passive natural air circulation flow path is constructed in the original shielding heat-insulation shell structure of the reactor. Air can be driven to flow by means of high temperature of the reactor pressure vessel. A natural circulation of the air is formed without control of any external auxiliary facility, so that the residual decay heat of the reactor core is discharged under normal shutdown and accident conditions, the temperature of the reactor core is ensured to be maintained within a safe limit value range, and the operation safety of the reactor is further improved.
2. A multi-flow path design is adopted, in which an air deflector is additionally provided, so that the large space between the original shielding heat-insulation shell and the reactor pressure vessel becomes an inside flow path and an outside flow path. The device enables cold air from the environment to directly enter the inside flow path constructed by the air deflector through the air intake passage. The cold air firstly exchanges heat with the surface of the high-temperature reactor pressure vessel, then flows into the outside flow path outside the air deflector for heat exchange, and finally flows out, in which process the cold air flows back and forth in the inner space of the shielding heat-insulation shell. Compared with the traditional flow in the existing technology where cold air directly enters the large space between the shielding heat-insulation shell and the reactor pressure vessel for diffusion heat exchange and then flows out of the large space directly, in the present disclosure, the air flow length of cold air from the environment in the space between the shielding heat-insulation shell and the reactor pressure vessel is increased, and further the heat exchange area in a limited space is significantly increased, which improves the heat exchange efficiency, thereby significantly increasing the residual heat discharge efficiency of the reactor core. The present disclosure also addresses the restriction caused by the structural size of the reactor body on the heat dissipation capacity and the restriction on the size and the requirement on the capacity of the passive residual heat removal device, further simplifies the construction of the overall device and reduces the size of the device as much as possible, so that the design requirement for a horizontal micro-reactor is met.
BRIEF DESCRIPTION OF DRAWINGS
1. By additionally providing the air deflector, the flow path for air can be optimized, and a passive natural air circulation flow path is constructed in the original shielding heat-insulation shell structure of the reactor. Air can be driven to flow by means of high temperature of the reactor pressure vessel. A natural circulation of the air is formed without control of any external auxiliary facility, so that the residual decay heat of the reactor core is discharged under normal shutdown and accident conditions, the temperature of the reactor core is ensured to be maintained within a safe limit value range, and the operation safety of the reactor is further improved.
2. A multi-flow path design is adopted, in which an air deflector is additionally provided, so that the large space between the original shielding heat-insulation shell and the reactor pressure vessel becomes an inside flow path and an outside flow path. The device enables cold air from the environment to directly enter the inside flow path constructed by the air deflector through the air intake passage. The cold air firstly exchanges heat with the surface of the high-temperature reactor pressure vessel, then flows into the outside flow path outside the air deflector for heat exchange, and finally flows out, in which process the cold air flows back and forth in the inner space of the shielding heat-insulation shell. Compared with the traditional flow in the existing technology where cold air directly enters the large space between the shielding heat-insulation shell and the reactor pressure vessel for diffusion heat exchange and then flows out of the large space directly, in the present disclosure, the air flow length of cold air from the environment in the space between the shielding heat-insulation shell and the reactor pressure vessel is increased, and further the heat exchange area in a limited space is significantly increased, which improves the heat exchange efficiency, thereby significantly increasing the residual heat discharge efficiency of the reactor core. The present disclosure also addresses the restriction caused by the structural size of the reactor body on the heat dissipation capacity and the restriction on the size and the requirement on the capacity of the passive residual heat removal device, further simplifies the construction of the overall device and reduces the size of the device as much as possible, so that the design requirement for a horizontal micro-reactor is met.
BRIEF DESCRIPTION OF DRAWINGS
[0009] Fig.1 is a schematic structural diagram of a passive residual heat removal device according to an embodiment of the present disclosure;
Fig.2 is a cross-sectional view taken along line A-A of Fig.1;
Fig.3 is a cross-sectional view taken along line B-B of Fig.1 .
Fig.2 is a cross-sectional view taken along line A-A of Fig.1;
Fig.3 is a cross-sectional view taken along line B-B of Fig.1 .
[0010] In the drawings: 1. air inlet; 2. baffle plate; 3. air deflector; 4.
support rib plate; 5.
air outlet; 6. shielding heat-insulation shell; 7. reactor pressure vessel.
DETAIL DESCRIPTION OF EMBODIMENTS
support rib plate; 5.
air outlet; 6. shielding heat-insulation shell; 7. reactor pressure vessel.
DETAIL DESCRIPTION OF EMBODIMENTS
[0011] To make a person skilled in the art better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail in conjunction with the accompanying drawings and embodiments.
[0012] Embodiment 1
[0013] Fig. 1 is a schematic structural diagram of a passive residual heat removal device according to an embodiment of the present disclosure; Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1; and Fig. 3 is a cross-sectional view taken along line B-B of Fig. 1.
[0014] As shown in Fig. 1, the embodiment discloses a passive residual heat removal device. The main body of the device is an original shielding heat-insulation shell 6 of a reactor, the shielding heat-insulation shell 6 is arranged on the outer side of a reactor pressure vessel 7, and the body structure of the shielding heat-insulation shell 6 can be used for providing radiation shielding, high-temperature protection and the like for the reactor pressure vessel 7 under various operation conditions. Meanwhile, the shielding heat-insulation shell 6 also serves as a main structure of the passive residual heat removal device for constructing a flow path required for forming a natural air circulation.
[0015] An air deflector 3 is provided inside the shielding heat-insulation shell 6, and the air deflector 3 is arranged on the outer side of the reactor pressure vessel 7 in a covering manner such that an air flow space in the shielding heat-insulation shell 6 is divided into an inside flow path between the air deflector 3 and the reactor pressure vessel 7 and an outside flow path between the air deflector 3 and the shielding heat-insulation shell 6. Air in the inside flow path flows from front and rear ends of the air deflector 3 to the outside flow path.
[0016] The shielding heat-insulation shell 6 is provided with an air inlet 1 and an air outlet 5. The air inlet 1 is in sealed connection with the air deflector 3 through an air intake passage. Cold air in the environment is introduced into the inside flow path through the air inlet 1 for directly cooling the reactor pressure vessel 7.
High-temperature air in the outside flow path is discharged to the environment through the air outlet 5.
High-temperature air in the outside flow path is discharged to the environment through the air outlet 5.
[0017] Next, the details of the passive residual heat removal device of the present embodiment will be described in further detail.
[0018] The air deflector 3 is of a cylindrical shape, and is open at both ends for connecting the inside flow path with the outside flow path. A support rib plate 4 is disposed between the air deflector 3 and the shielding heat-insulation shell 6, and the cylindrical air deflector 3 is fixedly connected to the shielding heat-insulation shell 6 through the support rib plate 4 without the need of bearing.
[0019] The reactor may be a horizontal micro-reactor, of which the reactor pressure vessel 7 is disposed horizontally, and the reactor pressure vessel 7 is of a cylindrical shape. The length of the air deflector 3 may be a part of the length covering the middle section of the reactor pressure vessel 7 that is disposed horizontally, for example, the length of the cylindrical air deflector 3 may be 1/3 of the length of the cylindrical reactor pressure vessel 7. The cylindrical air deflector 3 is disposed concentrically and coaxially with the reactor pressure vessel 7. In this case, it is possible to avoid the support legs of the reactor pressure vessel 7, such that spaces are reserved at two ends of the reactor pressure vessel 7, and air in the inner space of the air deflector 3 may flow from the two ends to the outer space of the air deflector 3 conveniently.
Since the core of the reactor is generally located at a position corresponding to the middle section of the reactor pressure vessel 7, that is, the corresponding hottest region is in the middle section of the reactor pressure vessel 7, the heat conduction efficiency is higher and the heat conduction effect is better in a case where the air deflector 3 is arranged at the outside of the middle section of the reactor pressure vessel 7.
Since the core of the reactor is generally located at a position corresponding to the middle section of the reactor pressure vessel 7, that is, the corresponding hottest region is in the middle section of the reactor pressure vessel 7, the heat conduction efficiency is higher and the heat conduction effect is better in a case where the air deflector 3 is arranged at the outside of the middle section of the reactor pressure vessel 7.
[0020] Of course, the length of the air deflector 3 may also be the length covering the entire section of the horizontal reactor pressure vessel 7, that is, the length of the cylindrical air deflector 3 may also be the same as the length of the cylindrical reactor pressure vessel 7. Alternatively, the length of the cylindrical air deflector 3 may also be other length covering any end of the horizontal reactor pressure vessel 7 as well as a part of the middle section of the horizontal reactor pressure vessel 7. For example, the length of the cylindrical air deflector 3 may also be 2/3 of the length of the cylindrical reactor pressure vessel 7. The possibility of the length will not be elaborated here one by one.
[0021] In this embodiment, the air deflector 3 is made of a high temperature resistant metal material (for example, austenitic stainless steel such as 316H, A800H
may be specifically used). The residual decay heat of the reactor core is mainly radiated outwards from the outer surface of the reactor pressure vessel 7 in two modes of convection and radiation, and the heat exchange area can be greatly increased by additionally providing the air deflector 3 in the shielding heat-insulation shell 6, so that the heat radiation capacity is increased, and the restriction of the structural size of the micro-reactor on the heat radiation capacity is addressed.
may be specifically used). The residual decay heat of the reactor core is mainly radiated outwards from the outer surface of the reactor pressure vessel 7 in two modes of convection and radiation, and the heat exchange area can be greatly increased by additionally providing the air deflector 3 in the shielding heat-insulation shell 6, so that the heat radiation capacity is increased, and the restriction of the structural size of the micro-reactor on the heat radiation capacity is addressed.
[0022] The air inlet 1 may be disposed at a middle position close to the lower portion or the bottom portion of the shielding heat-insulation shell 6 corresponding to the position of the air deflector. Chamfering treatment is performed on a connection portion of the air inlet which is in sealed connection with the air deflector 3 through the air intake passage. The air outlet 5 may be disposed at an upper portion of the shielding heat-insulation shell 6. In the operation process, cold air from the environment directly enters an inside flow path constructed by the air deflector 3 through the air inlet, flows and exchanges heat around the surface of the cylindrical reactor pressure vessel 7, then flows to the front and rear ends of the reactor pressure vessel 7 along the horizontal direction, and then to an outside flow path through openings at the two ends, and is mixed with cooler air in the outside flow path for further heat exchange, and thereafter is discharged through the air outlet 5 at the upper portion of the shielding heat-insulation shell 6. By employing the air deflector 3, the heat dissipation efficiency of passive residual heat discharge of the horizontal reactor is improved.
[0023] The air inlet 1 and the air intake passage may be made of the same high temperature resistant metal material as the air deflector 3, that is, austenitic stainless steel such as 316H, A800H.
[0024] A certain number of baffle plates 2 may also be disposed in the air inlet 1.
Specifically, the number of the partition plates may be one, or may be two, three, or any other number that is more than three. The baffle plates are intended to fix and support the air inlet 1, so as to increase the rigidity of the air inlet and prevent the air inlet from deforming.
Specifically, the number of the partition plates may be one, or may be two, three, or any other number that is more than three. The baffle plates are intended to fix and support the air inlet 1, so as to increase the rigidity of the air inlet and prevent the air inlet from deforming.
[0025] The passive residual heat removal device provided by the embodiment of the disclosure adopts a passive design concept. By additionally providing the air deflector, the flow path for air can be optimized, and a passive natural circulating air circulation flow path is constructed in the original shielding heat-insulation shell structure of the reactor. Air can be driven to flow by means of high temperature of the reactor pressure vessel. A natural circulation of the air is formed without the control of any external auxiliary facility, so that the residual decay heat of the reactor core is discharged under normal shutdown and accident conditions, the temperature of the reactor core is ensured to be maintained within a safe limit value range, and the operation safety of the reactor is further improved. In addition, by additionally providing the air deflector, cold air in the environment can directly enter the inside flow path constructed by the air deflector through the air intake passage. The cold air firstly exchanges heat with the surface of the high-temperature reactor pressure vessel, which changes the traditional flow where the air enters into a large space and then dissipates at first and exchanges heat thereafter.
Also, additionally providing the air deflector can significantly increase the heat exchange area in a limited space, such that heat transfer amount of heat exchange by natural convection and radiation is increased along, thereby significantly increasing the residual heat discharge efficiency of the reactor core. By means of the present disclosure, the restriction caused by the structural size of the reactor body on the heat dissipation capacity and the restriction on the size and the requirement on the capacity of the passive residual heat removal device are addressed, the construction of the overall device is simplified and the size of the device is reduced as much as possible, and the design requirement for a horizontal micro-reactor is thus met.
Also, additionally providing the air deflector can significantly increase the heat exchange area in a limited space, such that heat transfer amount of heat exchange by natural convection and radiation is increased along, thereby significantly increasing the residual heat discharge efficiency of the reactor core. By means of the present disclosure, the restriction caused by the structural size of the reactor body on the heat dissipation capacity and the restriction on the size and the requirement on the capacity of the passive residual heat removal device are addressed, the construction of the overall device is simplified and the size of the device is reduced as much as possible, and the design requirement for a horizontal micro-reactor is thus met.
[0026] Embodiment 2
[0027] The present embodiment discloses a horizontal micro-reactor system, which includes a reactor pressure vessel and the passive residual heat removal device of Embodiment 1.
[0028] By adopting the passive residual heat removal device of Embodiment 1, the horizontal micro-reactor system of this embodiment of the disclosure can effectively guide the residual heat of the reactor core out under normal shutdown and accident conditions, such that the operation safety of the reactor is improved.
[0029] It will be understood that the above embodiments are merely exemplary embodiments employed to illustrate the principles of the present disclosure, and the present disclosure is not limited thereto. Various modifications and variations can be made by a person skilled in the art without departing from the spirit and the scope of the present disclosure. These modifications and variations should be considered to be within the protection scope of the present disclosure.
Claims (10)
1. A passive residual heat removal device, characterized in comprising a shielding heat-insulation shell (6) and an air deflector (3), wherein the shielding heat-insulation shell (6) is arranged on an outer side of a reactor pressure vessel (7);
wherein the air deflector (3) is arranged inside the shielding heat-insulation shell (6) and is arranged on the outer side of the reactor pressure vessel (7) in a covering manner such that an air flow space in the shielding heat-insulation shell (6) is divided into an inside flow path between the air deflector (3) and the reactor pressure vessel (7) and an outside flow path between the air deflector (3) and the shielding heat-insulation shell (6), and air in the inside flow path flows from front and rear ends of the air deflector (3) to the outside flow path; and wherein the shielding heat-insulation shell (6) is provided with an air inlet (1) and an air outlet (5), the air inlet (1) is in sealed connection with the air deflector (3) through an air intake passage, cold air in an environment is introduced into the inside flow path through the air inlet (1) for directly cooling the reactor pressure vessel (7), and high-temperature air in the outside flow path is discharged to the environment through the air outlet (5).
wherein the air deflector (3) is arranged inside the shielding heat-insulation shell (6) and is arranged on the outer side of the reactor pressure vessel (7) in a covering manner such that an air flow space in the shielding heat-insulation shell (6) is divided into an inside flow path between the air deflector (3) and the reactor pressure vessel (7) and an outside flow path between the air deflector (3) and the shielding heat-insulation shell (6), and air in the inside flow path flows from front and rear ends of the air deflector (3) to the outside flow path; and wherein the shielding heat-insulation shell (6) is provided with an air inlet (1) and an air outlet (5), the air inlet (1) is in sealed connection with the air deflector (3) through an air intake passage, cold air in an environment is introduced into the inside flow path through the air inlet (1) for directly cooling the reactor pressure vessel (7), and high-temperature air in the outside flow path is discharged to the environment through the air outlet (5).
2. The passive residual heat removal device of claim 1, characterized in that the air deflector (3) is of a cylindrical shape and is open at both ends.
3. The passive residual heat removal device of claim 2, characterized in that the air deflector (3) covers a length of a part of a middle section of the reactor pressure vessel (7) that is disposed horizontally.
4. The passive residual heat removal device of claim 3, characterized in that the air deflector (3) is arranged coaxially with the reactor pressure vessel (7).
5. The passive residual heat removal device of claim 1, characterized in that the air deflector (3) is fixedly connected to the shielding heat-insulation shell (6) through a support rib plate (4).
6. The passive residual heat removal device of claim 1, characterized in that a plurality of baffle plates (2) are provided in the air inlet (1) for fixing and supporting the air inlet.
7. The passive residual heat removal device of claim 1, characterized in that the air inlet is disposed at a lower portion of the shielding heat-insulation shell (6) corresponding to a position of the air deflector (3), and the air outlet is disposed at an upper portion of the shielding heat-insulation shell (6).
8. The passive residual heat removal device of any one of claims 1 to 7, characterized in that the air deflector (3) is made of a high temperature resistant metal material.
9. The passive residual heat removal device of claim 8, characterized in that the air inlet (1) and the air intake passage are made of the same material as the air deflector (3).
10. A horizontal micro-reactor system comprising a reactor pressure vessel (7), characterized in that the system further comprises the passive residual heat removal device of any one of claims 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361226.0 | 2021-11-17 | ||
| CN202111361226.0A CN114334192A (en) | 2021-11-17 | 2021-11-17 | Passive residual heat removal device of microminiature horizontal reactor |
| PCT/CN2021/142862 WO2023087501A1 (en) | 2021-11-17 | 2021-12-30 | Passive residual heat removal device and miniature horizontal reactor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3227760A1 true CA3227760A1 (en) | 2023-05-25 |
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ID=81045991
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3227760A Pending CA3227760A1 (en) | 2021-11-17 | 2021-12-30 | Passive residual heat removal device and horizontal micro-reactor system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114334192A (en) |
| CA (1) | CA3227760A1 (en) |
| WO (1) | WO2023087501A1 (en) |
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| CN114334192A (en) * | 2021-11-17 | 2022-04-12 | 中国核电工程有限公司 | Passive residual heat removal device of microminiature horizontal reactor |
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| JP5624355B2 (en) * | 2010-04-21 | 2014-11-12 | 株式会社東芝 | Liquid metal cooled nuclear reactor and heat removal method thereof |
| CN103295656B (en) * | 2012-02-29 | 2017-12-26 | 上海核工程研究设计院 | Diversified engineered safety system for nuclear reactor |
| KR101430314B1 (en) * | 2012-11-29 | 2014-08-13 | 한국원자력연구원 | Movable nuclear reactor system |
| JP2015078948A (en) * | 2013-10-18 | 2015-04-23 | 日立Ｇｅニュークリア・エナジー株式会社 | Fast reactor nuclear reactor facilities |
| CN105788673B (en) * | 2014-12-26 | 2019-04-23 | 国核华清（北京）核电技术研发中心有限公司 | Heat exchange enhancements and method, accident mitigation equipment for nuclear plant pressure vessels |
| CN205230604U (en) * | 2015-11-06 | 2016-05-11 | 国核华清（北京）核电技术研发中心有限公司 | Heat transfer system is reinforceed in cold and hot circulation of nuclear power containment |
| CN108520785B (en) * | 2018-06-19 | 2023-07-28 | 中国科学院上海应用物理研究所 | Passive waste heat discharging system and waste heat discharging method for molten salt reactor |
| CN113140337B (en) * | 2021-03-05 | 2023-09-15 | 国科中子能(青岛)研究院有限公司 | Passive cooling system, method and reactor for multi-medium shared cooling channel |
| CN113053546A (en) * | 2021-03-12 | 2021-06-29 | 中国核电工程有限公司 | Horizontal gas-cooled micro-reactor control rod and horizontal reactor core system |
| CN114334192A (en) * | 2021-11-17 | 2022-04-12 | 中国核电工程有限公司 | Passive residual heat removal device of microminiature horizontal reactor |
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2021
- 2021-11-17 CN CN202111361226.0A patent/CN114334192A/en active Pending
- 2021-12-30 WO PCT/CN2021/142862 patent/WO2023087501A1/en active Application Filing
- 2021-12-30 CA CA3227760A patent/CA3227760A1/en active Pending
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| Publication number | Publication date |
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| CN114334192A (en) | 2022-04-12 |
| WO2023087501A1 (en) | 2023-05-25 |
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