CN114360752A - Cooling system and cooling method for containment vessel of marine nuclear power platform - Google Patents
Cooling system and cooling method for containment vessel of marine nuclear power platform Download PDFInfo
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- CN114360752A CN114360752A CN202111671796.XA CN202111671796A CN114360752A CN 114360752 A CN114360752 A CN 114360752A CN 202111671796 A CN202111671796 A CN 202111671796A CN 114360752 A CN114360752 A CN 114360752A
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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
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/12—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from pressure vessel; from containment vessel
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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
- G21C15/24—Promoting flow of the coolant
- G21C15/243—Promoting flow of the coolant for liquids
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- 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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Abstract
The application discloses a cooling system and a cooling method for a containment vessel of an ocean nuclear power platform, which relate to the technical field of nuclear power devices and comprise the following steps: the shielding water jacket is sleeved on the outer surface of the containment vessel and is provided with a water containing cavity with uniform thickness; the shielding water jacket is provided with at least one upward vertical exhaust pipe, and the height of the top port of the exhaust pipe is greater than the height of the highest water level of the shielding water jacket; the shielding water jacket is used for absorbing heat emitted by the containment vessel and converting water in the water containing cavity into vapor to be discharged outwards; the cooling water tank is communicated to the water containing cavity of the shielding water jacket through a pipeline; and a pressure difference valve is arranged on a pipeline between the cooling water tank and the shielding water jacket, and the pressure difference valve is opened when the pressure difference between two sides is higher than a first set pressure difference. According to the cooling system and the cooling method, the shielding water jacket is arranged outside the containment, and water in the shielding water jacket absorbs heat of the containment and converts steam to be discharged outwards, so that the containment is cooled.
Description
Technical Field
The application relates to the technical field of nuclear power devices, in particular to a cooling system and a cooling method for a containment vessel of an ocean nuclear power platform.
Background
At present, a containment is the last safety barrier of a nuclear power plant for preventing radioactive fission products from being released, and the containment mainly has the function of limiting radioactive substances from being released to the surrounding environment from a reactor core and a reactor coolant system during and after accident conditions, so that the pollution to the surrounding environment is avoided. In addition, shielding is provided during operating and accident conditions, minimizing radioactive emissions during operating conditions, and protecting the reactor from external events.
In the related technology, the known second generation and third generation nuclear power technologies mostly adopt a containment vessel to cover a reactor core and a reactor coolant system, when an accident condition occurs, the containment vessel is shielded and sprayed outside the containment vessel, and the heat of the containment vessel is ensured to be led out by an active or passive method.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cooling system and a cooling method for a containment vessel of an ocean nuclear power platform.
In order to achieve the above purposes, the technical scheme is as follows: a cooling system for a marine nuclear power platform containment, comprising:
the shielding water jacket is sleeved on the outer surface of the containment vessel and is provided with a water containing cavity with uniform thickness; the shielding water jacket is provided with at least one upward vertical exhaust pipe, and the height of the top port of the exhaust pipe is greater than the height of the highest water level of the shielding water jacket; the shielding water jacket is used for absorbing heat emitted by the containment vessel and converting water in the water containing cavity into vapor to be discharged outwards;
the cooling water tank is arranged above the containment and communicated to the water containing cavity of the shielding water jacket through a pipeline; and a pressure difference valve is arranged on a pipeline between the cooling water tank and the shielding water jacket, and the pressure difference valve is opened when the pressure difference between two sides is higher than a first set pressure difference.
On the basis of the technical scheme, the cooling system further comprises a fixing sleeve, the fixing sleeve buckles the shielding water jacket on the outer surface of the containment, and the exhaust pipe penetrates through the fixing sleeve.
On the basis of the technical scheme, the cooling system further comprises a water supplementing device, and the water supplementing device is used for supplementing water to the cooling water tank.
On the basis of the technical scheme, a high water level instrument and a low water level instrument are arranged in the cooling water tank; when the water level of the cooling water tank is lower than the low-water-level instrument, the water supplementing device supplements water to the cooling water tank; and when the water level of the cooling water tank is higher than the high-water-level meter, stopping water supplement.
On the basis of the technical scheme, the shielding water jacket is provided with an upward vertical safety pipe, and the safety pipe is provided with a normally closed safety valve; when the pressure of the water vapor on the safety valve reaches a set threshold value, the safety valve is opened.
On the basis of the technical scheme, the cooling system is also provided with a normally closed low-point water drain valve, and the low-point water drain valve is arranged on the bottom end surface of the shielding water jacket; the low-point water drain valve is used for being opened when the shielding water jacket leaks or needs to drain water.
On the basis of the technical scheme, the exhaust pipe is provided with a normally open exhaust valve, and when the shielding water jacket leaks, the exhaust valve is closed.
The application also discloses a cooling method of the cooling system based on the marine nuclear power platform containment, which comprises the following steps:
the temperature of the containment vessel rises;
the water in the water containing cavity of the shielding water jacket absorbs the heat emitted by the containment vessel and turns into steam which is discharged outwards through the exhaust pipe;
the pressure in the shielding water jacket is reduced, the pressure difference on the two sides of the pressure difference valve is gradually increased, when the pressure difference is higher than a first set pressure difference, the pressure difference valve is opened, and the cooling water tank is used for supplementing water to the shielding water jacket;
the pressure in the shielding water jacket is increased, the pressure of the cooling water tank is reduced, the pressure difference on the two sides of the pressure difference valve is gradually reduced, and when the pressure difference on the two sides of the pressure difference valve is lower than a second set pressure difference, the pressure difference valve is closed.
On the basis of the technical scheme, the cooling system further comprises a fixing sleeve, the fixing sleeve buckles the shielding water jacket on the outer surface of the containment, and the exhaust pipe penetrates through the fixing sleeve;
the cooling system also comprises a water replenishing device, and a high water level instrument and a low water level instrument are arranged in the cooling water tank; when the water level of the cooling water tank is lower than the low-water-level instrument, the water supplementing device supplements water to the cooling water tank; and when the water level of the cooling water tank is higher than the high-water-level meter, stopping water supplement.
On the basis of the technical scheme, the shielding water jacket is provided with an upward vertical safety pipe, and the safety pipe is provided with a normally closed safety valve; when the pressure of the water vapor on the safety valve reaches a set threshold value, the safety valve is opened; the cooling system is also provided with a normally closed low-point water drain valve, and the low-point water drain valve is arranged on the bottom end face of the shielding water jacket; the low-point water drain valve is used for being opened when the shielding water jacket leaks or needs to drain water.
The beneficial effect that technical scheme that this application provided brought includes:
the cooling system and the cooling method for the marine nuclear power platform containment vessel comprise a shielding water jacket and a cooling water tank, wherein the shielding water jacket is sleeved on the outer surface of the containment vessel and is provided with a water containing cavity with uniform thickness; the shielding water jacket is provided with at least one upward vertical exhaust pipe. When the temperature of the containment vessel rises, the water in the water containing cavity absorbs the heat emitted by the containment vessel and is converted into steam to be discharged outwards, so that the purpose of cooling the containment vessel is achieved. Meanwhile, a pressure difference valve is arranged on a pipeline between the cooling water tank and the shielding water jacket, when water in the water containing cavity absorbs heat emitted by the containment vessel and becomes steam to be discharged outwards, the internal pressure of the shielding water jacket is reduced, the pressure difference on two sides of the pressure difference valve is gradually increased, when the pressure difference is higher than a first set pressure difference, the pressure difference valve is opened, and the cooling water tank is used for supplementing water for the shielding water jacket. The cooling system of this application, the design is simple, and cooling water tank can rely on pressure differential automatic to carry out the moisturizing for the shielding water jacket, and the principle is simple and practical, is applicable to offshore platform's special service environment, and cooling system operates stably, and cooling system easy operation, reliable and stable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a cooling system provided in an embodiment of the present application (the containment vessel is not shown in section, and the shielding water jacket and the fixing sleeve are shown in section);
reference numerals: 1. a cooling water tank; 2. a water replenishing device; 3. a differential pressure valve; 5. an exhaust valve; 6. a safety valve; 7. a low point water drain valve; 8. a high water level meter; 9. a low water level meter; 10. a shielding water jacket; 100. a containment vessel; 101. and (4) fixing sleeves.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the present application provides an embodiment of a cooling system for a marine nuclear power platform containment, where the cooling system includes a shielding water jacket 10 and a cooling water tank 1, the shielding water jacket 10 is sleeved on an outer surface of the containment 100, and the shielding water jacket 10 has a water containing cavity with a uniform thickness. The water containing cavity stores water, and water can absorb heat to be changed into water vapor, so that the aim of cooling other parts is fulfilled. The shielding water jacket 10 is provided with at least one upward vertical exhaust pipe which is used for exhausting water vapor in the shielding water jacket 10 outwards. The height of the top port of the exhaust pipe is greater than the highest water level height of the shielding water jacket 10, so that water in the shielding water jacket 10 is prevented from flowing out of the exhaust pipe.
The shielding water jacket 10 absorbs heat emitted by the containment vessel 100, and converts water in the water containing cavity into vapor to be discharged outwards, so that the purpose of cooling the containment vessel 100 is achieved. The cooling water tank 1 is arranged above the containment vessel 100 to form a certain height difference, so that water can be directly supplied to the shielding water jacket 10 under the action of gravity. The cooling water tank 1 is communicated to the water containing cavity of the shielding water jacket 10 through a pipeline, a pressure difference valve 3 is arranged on the pipeline between the cooling water tank 1 and the shielding water jacket 10, and the pressure difference valve 3 can be opened when the pressure difference between two sides is higher than a first set pressure difference. After the differential pressure valve 3 is opened, the cooling water tank 1 replenishes the shielding water jacket 10 with water.
Specifically, the shield water jacket 10 covers the entire outer surface of the containment vessel 100, absorbing as much heat of the containment vessel 100 as possible.
In one embodiment, the cooling system further comprises a fixing sleeve 101, the fixing sleeve 101 buckles the shielding water jacket 10 on the outer surface of the containment vessel 100, and the exhaust pipe penetrates through the fixing sleeve 101. Specifically, the shielding water jacket 10 is sleeved on the outer surface of the containment vessel 100, and the fixing sleeve 101 is sleeved on the outer surface of the shielding water jacket 10. The inner surface of the fixing sleeve 101 and the outer surface of the shielding water jacket 10 are uniformly arranged.
In one embodiment, the cooling system further comprises a water replenishing device 2, and the water replenishing device 2 is used for replenishing the cooling water tank 1, so that the water in the cooling water tank 1 is always kept sufficient.
In one embodiment, a high water level meter 8 and a low water level meter 9 are provided in the cooling water tank 1, and both the high water level meter 8 and the low water level meter 9 are connected to the water replenishing device 2. When the water level of the cooling water tank 1 is lower than the low-level meter 9, the water replenishing device 2 replenishes water to the cooling water tank 1, and the water level of the cooling water tank 1 slowly rises. When the water level of the cooling water tank 1 is higher than the high water level gauge 8, the cooling water tank 1 is filled with water, and water supply is stopped.
In one embodiment, the shielding water jacket 10 is provided with an upward vertical safety pipe, the safety pipe is provided with a normally closed safety valve 6, and when the pressure of water vapor on the safety valve 6 reaches a set threshold value, the safety valve 6 is opened. At this time, the heat generated by the containment vessel 100 causes the water containing cavity of the shielding water jacket 10 to generate a large amount of water vapor, the water vapor cannot be exhausted outside through the exhaust pipe, and the large amount of water vapor generates high pressure, so that the safety valve 6 is opened, the shielding water jacket 10 is rapidly decompressed, and the safety of the shielding water jacket 10 is ensured.
Preferably, the cooling system is further provided with a normally closed low-point water drain valve 7, and the low-point water drain valve 7 is arranged on the bottom end face of the shielding water jacket 10; the low point water drain valve 7 is used for opening when the shielding water jacket 10 leaks or needs to drain water. When the shielding water jacket 10 leaks, the water in the shielding water jacket 10 can be discharged in time through the low-point water drain valve 7.
Preferably, the exhaust pipe is provided with a normally open exhaust valve 5, and the exhaust valve 5 is normally open and exhausts the outside. When the shielding water jacket 10 leaks, the exhaust valve 5 is closed, so that the leakage of water in the shielding water jacket 10 is slowed down as much as possible, and the shielding water jacket 10 is prevented from leaking water quickly and losing the function of radiating the safe shell.
The application also discloses a cooling method of the cooling system based on the marine nuclear power platform containment, which comprises the following steps:
the temperature of the containment vessel 100 rises. Specifically, when a loss of coolant accident or a main steam line rupture occurs within the containment vessel 100, the temperature of the containment vessel 100 rises.
The water in the water containing cavity of the shielding water jacket 10 absorbs the heat emitted by the containment vessel 100 and turns into vapor, and the vapor is discharged outwards through the exhaust pipe;
the pressure in the shielding water jacket 10 is gradually reduced, the pressure difference on the two sides of the pressure difference valve is gradually increased, when the pressure difference is higher than a first set pressure difference, the pressure difference valve is opened, and the cooling water tank 1 is used for supplementing water to the shielding water jacket 10;
the pressure in the shielding water jacket 10 is increased, the pressure of the cooling water tank 1 is reduced, the pressure difference between the two sides of the pressure difference valve is gradually reduced, and when the pressure difference between the two sides of the pressure difference valve is lower than a second set pressure difference, the pressure difference valve is closed.
According to the cooling method, the cooling water tank 1 is automatically controlled for supplementing water to the shielding water jacket 10 through the pressure difference, the pressure difference is formed by the height difference of the effective cooling water tank 1 and the height difference of the shielding water jacket 10, the control structure is simplified, the cooling method is suitable for an ocean nuclear power platform scene, the shielding water jacket 10 is always kept in a full water state, and the shielding is guaranteed to be effective all the time.
A large number of experiments verify that when the water level of the cooling water tank 1 is just enabled to be in the middle of the high water level instrument 8 and the low water level instrument 9, the shielding water jacket 10 can be enabled to be in a full water state by the aid of the first set pressure difference and the second set pressure difference of the pressure difference valve.
In one embodiment, the cooling system further comprises a fixing sleeve 101, the fixing sleeve 101 buckles the shielding water jacket 10 on the outer surface of the containment vessel 100, and the exhaust pipe penetrates through the fixing sleeve 101. Specifically, the shielding water jacket 10 is sleeved on the outer surface of the containment vessel 100, and the fixing sleeve 101 is sleeved on the outer surface of the shielding water jacket 10. The inner surface of the fixing sleeve 101 and the outer surface of the shielding water jacket 10 are uniformly arranged.
In one embodiment, the cooling system further comprises a water replenishing device 2, and the water replenishing device 2 is used for replenishing the cooling water tank 1, so that the water in the cooling water tank 1 is always kept sufficient.
In one embodiment, a high water level meter 8 and a low water level meter 9 are provided in the cooling water tank 1, and both the high water level meter 8 and the low water level meter 9 are connected to the water replenishing device 2. When the water level of the cooling water tank 1 is lower than the low-level meter 9, the water replenishing device 2 replenishes water to the cooling water tank 1, and the water level of the cooling water tank 1 slowly rises. When the water level of the cooling water tank 1 is higher than the high water level gauge 8, the cooling water tank 1 is filled with water, and water supply is stopped.
In one embodiment, the shielding water jacket 10 is provided with an upward vertical safety pipe, the safety pipe is provided with a normally closed safety valve 6, and when the pressure of water vapor on the safety valve 6 reaches a set threshold value, the safety valve 6 is opened. At this time, the heat generated by the containment vessel 100 causes the water containing cavity of the shielding water jacket 10 to generate a large amount of water vapor, the water vapor cannot be exhausted outside through the exhaust pipe, and the large amount of water vapor generates high pressure, so that the safety valve 6 is opened, the shielding water jacket 10 is rapidly decompressed, and the safety of the shielding water jacket 10 is ensured.
Preferably, the cooling system is further provided with a normally closed low-point water drain valve 7, and the low-point water drain valve 7 is arranged on the bottom end face of the shielding water jacket 10; the low point water drain valve 7 is used for opening when the shielding water jacket 10 leaks or needs to drain water. When the shielding water jacket 10 leaks, the water in the shielding water jacket 10 can be discharged in time through the low-point water drain valve 7.
The cooling system and the cooling method for the marine nuclear power platform containment vessel comprise a shielding water jacket and a cooling water tank, wherein the shielding water jacket is sleeved on the outer surface of the containment vessel and is provided with a water containing cavity with uniform thickness; the shielding water jacket is provided with at least one upward vertical exhaust pipe. When the temperature of the containment vessel rises, the water in the water containing cavity absorbs the heat emitted by the containment vessel and is converted into steam to be discharged outwards, so that the purpose of cooling the containment vessel is achieved. Meanwhile, a pressure difference valve is arranged on a pipeline between the cooling water tank and the shielding water jacket, when water in the water containing cavity absorbs heat emitted by the containment vessel and becomes steam to be discharged outwards, the internal pressure of the shielding water jacket is reduced, the pressure difference on two sides of the pressure difference valve is gradually increased, when the pressure difference is higher than a first set pressure difference, the pressure difference valve is opened, and the cooling water tank is used for supplementing water for the shielding water jacket. The cooling system of this application, the design is simple, and cooling water tank can rely on pressure differential automatic to carry out the moisturizing for the shielding water jacket, and the principle is simple and practical, is applicable to offshore platform's special service environment, and cooling system operates stably, and cooling system easy operation, reliable and stable.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A cooling system for a containment vessel of an ocean nuclear power platform, comprising:
the shielding water jacket (10) is sleeved on the outer surface of the containment (100), and the shielding water jacket (10) is provided with a water containing cavity with uniform thickness; the shielding water jacket (10) is provided with at least one upward vertical exhaust pipe, and the height of the top port of the exhaust pipe is greater than the height of the highest water level of the shielding water jacket (10); the shielding water jacket (10) is used for absorbing heat emitted by the containment vessel (100) and converting water in the water containing cavity into steam to be discharged outwards;
the cooling water tank (1) is arranged above the containment (100) and communicated to the water containing cavity of the shielding water jacket (10) through a pipeline; and a pressure difference valve (3) is arranged on a pipeline between the cooling water tank (1) and the shielding water jacket (10), and the pressure difference valve (3) is opened when the pressure difference between the two sides is higher than a first set pressure difference.
2. The cooling system for a marine nuclear power platform containment vessel of claim 1, wherein: the cooling system further comprises a fixing sleeve (101), the fixing sleeve (101) buckles the shielding water jacket (10) on the outer surface of the containment (100), and the exhaust pipe penetrates through the fixing sleeve (101).
3. The cooling system for a marine nuclear power platform containment vessel of claim 1, wherein: the cooling system further comprises a water replenishing device (2), and the water replenishing device (2) is used for replenishing water for the cooling water tank (1).
4. The cooling system for a marine nuclear power platform containment vessel of claim 3, wherein: a high water level meter (8) and a low water level meter (9) are arranged in the cooling water tank (1); when the water level of the cooling water tank (1) is lower than the low-level instrument (9), the water supplementing device (2) supplements water to the cooling water tank (1); and when the water level of the cooling water tank (1) is higher than the high water level meter (8), stopping water supplement.
5. The cooling system for a marine nuclear power platform containment vessel of claim 1, wherein: the shielding water jacket (10) is provided with an upward vertical safety pipe which is provided with a normally closed safety valve (6); when the pressure of the water vapor on the safety valve (6) reaches a set threshold value, the safety valve (6) is opened.
6. The cooling system for a marine nuclear power platform containment vessel of claim 1, wherein: the cooling system is also provided with a normally closed low-point water drain valve (7), and the low-point water drain valve (7) is arranged on the bottom end face of the shielding water jacket (10); the low-point water drain valve (7) is used for being opened when the shielding water jacket (10) leaks or needs to drain water.
7. The cooling system for a marine nuclear power platform containment vessel of claim 6, wherein: the exhaust pipe is provided with a normally-open exhaust valve (5), and when the shielding water jacket (10) leaks, the exhaust valve (5) is closed.
8. A cooling method based on the cooling system of the marine nuclear power platform containment according to claim 1, characterized by comprising the following steps:
the temperature of the containment vessel (100) rises;
the water in the water containing cavity of the shielding water jacket (10) absorbs the heat emitted by the containment vessel (100) and turns into vapor, and the vapor is discharged outwards through the exhaust pipe;
the pressure in the shielding water jacket (10) is reduced, the pressure difference on the two sides of the pressure difference valve is gradually increased, when the pressure difference is higher than a first set pressure difference, the pressure difference valve is opened, and the cooling water tank (1) is used for supplementing water to the shielding water jacket (10);
the pressure in the shielding water jacket (10) rises, the pressure of the cooling water tank (1) is reduced, the pressure difference on the two sides of the pressure difference valve is gradually reduced, and when the pressure difference on the two sides of the pressure difference valve is lower than a second set pressure difference, the pressure difference valve is closed.
9. The cooling method of a cooling system according to claim 8, characterized in that: the cooling system further comprises a fixing sleeve (101), the fixing sleeve (101) buckles the shielding water jacket (10) on the outer surface of the containment (100), and the exhaust pipe penetrates through the fixing sleeve (101);
the cooling system also comprises a water replenishing device (2), and a high water level instrument (8) and a low water level instrument (9) are arranged in the cooling water tank (1); when the water level of the cooling water tank (1) is lower than the low-level instrument (9), the water supplementing device (2) supplements water to the cooling water tank (1); and when the water level of the cooling water tank (1) is higher than the high water level meter (8), stopping water supplement.
10. The cooling method of a cooling system according to claim 8, characterized in that: the shielding water jacket (10) is provided with an upward vertical safety pipe which is provided with a normally closed safety valve (6); when the pressure of the water vapor on the safety valve (6) reaches a set threshold value, the safety valve (6) is opened; the cooling system is also provided with a normally closed low-point water drain valve (7), and the low-point water drain valve (7) is arranged on the bottom end face of the shielding water jacket (10); the low-point water drain valve (7) is used for being opened when the shielding water jacket (10) leaks or needs to drain water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111671796.XA CN114360752A (en) | 2021-12-31 | 2021-12-31 | Cooling system and cooling method for containment vessel of marine nuclear power platform |
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| CN202111671796.XA CN114360752A (en) | 2021-12-31 | 2021-12-31 | Cooling system and cooling method for containment vessel of marine nuclear power platform |
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