CN116078760B - Bubble cleaning and mixing device and method for outer wall surface of reactor pressure vessel - Google Patents
Bubble cleaning and mixing device and method for outer wall surface of reactor pressure vessel Download PDFInfo
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- CN116078760B CN116078760B CN202310079866.5A CN202310079866A CN116078760B CN 116078760 B CN116078760 B CN 116078760B CN 202310079866 A CN202310079866 A CN 202310079866A CN 116078760 B CN116078760 B CN 116078760B
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- pressure vessel
- wall surface
- support column
- mixing device
- heat preservation
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- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004321 preservation Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000000155 melt Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 5
- 230000002000 scavenging effect Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 230000008646 thermal stress Effects 0.000 claims description 2
- 238000009835 boiling Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention provides a bubble cleaning and mixing device and a method for the outer wall surface of a reactor pressure vessel, which belong to the technical field of reactor pressure vessels and comprise the following steps: the device comprises a silk bundle, a support column and a diversion track, wherein the silk bundle is arranged at one end of the support column, the other end of the support column is arranged at the inner side of a heat insulation layer of a pressure container, and the silk bundle is set at a set distance from a lower seal head of the pressure container; the support column can vibrate along with the heat preservation layer when the heat preservation layer is affected by water vapor to vibrate at high frequency, so that a filament bundle is driven to clean bubbles on the outer surface of the lower end socket of the pressure container, bubbles generated on the outer wall surface of the pressure container can be separated in time, the phenomenon of nucleate boiling deviation is prevented, and meanwhile, a certain cooling effect can be achieved through heat conduction; in addition, the cooling water diversion and other modes can be performed by utilizing the diversion track, so that the CHF on the outer wall surface of the lower end socket of the pressure vessel is effectively improved, and the IVR success possibility is remarkably increased.
Description
Technical Field
The invention belongs to the technical field of reactor pressure vessels, and particularly relates to a bubble cleaning and stirring device and a method for the outer wall surface of a reactor pressure vessel.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
After the pressurized water reactor is shut down in an accident, the nuclear fuel assembly still continuously generates decay heat, the heating value of one hour after the shutdown is still equivalent to that of a small thermal power plant, if the heat cannot be effectively removed, the temperature of a reactor core can be raised and melted, the generated melt can collapse to the lower end enclosure of the reactor pressure vessel, the high-temperature melt has the effects of jet impact, heating and the like on the lower end enclosure structure, and the structural integrity of the pressure vessel is greatly threatened. Upon failure of the pressure vessel, a significant amount of radioactive material will be released into the containment with the melt, which presents a challenge to the final safety barrier of the containment.
Most advanced generation nuclear power plants currently employ the technology of melt in-pile retention (IVR) by actively or passively introducing water into the pile cavity, externally cooling the pressure vessel walls, and carrying the melt decay heat out. IVR generally uses a flow channel between a pressure container and an insulating layer as a cooling water flow channel under severe accidents, and cooling water is injected from the bottom of a lower seal head of the pressure container and flows along the wall surface of the lower seal head.
According to IVR analysis results, the high-angle (60-90 degree inclination range) of the bottom head of the pressure vessel has significantly higher heat flow of the melt than the low-and-medium-angle position. Meanwhile, the outer wall surface of the pressure vessel can reach a critical point in the heat transfer process, namely, bubbles generated by water evaporation locally gather to generate large bubbles or vapor films, heat is prevented from further transferring out, the temperature is raised, the temperature is called off-nucleate boiling, the corresponding heat flow density is critical heat flow density (CHF), and once the heat flow of the melt exceeds the CHF, the temperature of the wall surface can rise and fail.
Under the design of the existing pressure vessel heat preservation layer, cooling water flows along the wall surface of the pressure vessel, the temperature is raised when reaching the high-angle area of the lower seal head, which is unfavorable for improving CHF, and water flows along the tangential direction due to inertia, so that the bubbles on the wall surface of the area are difficult to impact, the bubbles are difficult to separate, and the CHF is unfavorable for improving. Thus, the high angle region is the most involved and dangerous region in IVR implementations. How to effectively clean bubbles on the wall surface of the lower end socket area of the pressure vessel after an accident occurs so as to improve the CHF is a technical problem to be solved.
Disclosure of Invention
In order to solve the above problems, according to some embodiments, the present invention adopts the following technical solutions:
in a first aspect, the present invention provides a bubble scavenging mixing device for the outer wall surface of a reactor pressure vessel, comprising: the device comprises a silk bundle, a support column and a diversion track, wherein the silk bundle is arranged at one end of the support column, the other end of the support column is arranged at the inner side of a heat insulation layer of a pressure container, and the silk bundle is set at a set distance from a lower seal head of the pressure container; the support column can vibrate along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, so that tows are driven to clean bubbles on the outer surface of the lower end socket of the pressure vessel; the diversion track can divert cooling water with lower temperature to the area close to the wall surface of the pressure vessel, thereby improving the cooling effect of the pressure vessel.
Further, the support column is installed inside the pressure vessel insulation layer.
Further, the support columns are located in the 60-90-degree area in the heat-insulating layer flow channel.
Further, the set distance between the filament bundles and the pressure vessel bottom head is smaller than the deformation of the pressure vessel bottom head under the action of the gravity and thermal stress of the melt.
Further, the bubble cleaning and stirring device for the outer wall surface of the reactor pressure vessel further comprises a diversion track, one end of the diversion track is connected with the top end of the support column, and the other end of the diversion track is arranged on the inner side of the heat insulation layer.
Further, the diversion track is an arc-shaped semicircular groove.
Further, the front face of the semicircular groove of the flow guide rail faces the water flow direction in the flow channel.
Furthermore, the bubble cleaning and stirring device for the outer wall surface of the reactor pressure vessel is provided with a plurality of bubble cleaning and stirring devices which are arranged in the 60-90 DEG area in the heat preservation layer flow channel in a staggered manner.
Furthermore, the tows, the support columns and the diversion tracks are made of metal materials with good heat conduction performance such as stainless steel.
In a second aspect, the invention provides a working method of a bubble cleaning and mixing device for an outer wall surface of a reactor pressure vessel, comprising the following steps:
a plurality of bubble cleaning and mixing devices used for the outer wall surface of the reactor pressure vessel are arranged in a runner between the pressure vessel lower end enclosure and the pressure vessel heat insulation layer in a staggered manner;
the support column is arranged on the inner side of the heat preservation layer of the pressure vessel and is positioned in a 60-90 DEG area in the flow channel of the heat preservation layer;
when an accident occurs, the lower end enclosure of the pressure vessel is outwards expanded and deformed due to the dead weight of the melt and the high temperature condition, and the tows are contacted with the outer wall surface of the pressure vessel;
opening a reactor cavity for water injection, wherein cooling water enters from the bottom of the heat preservation layer, and a large amount of water vapor is intermittently generated in the process of water contact with the lower end socket of the pressure vessel, so that the heat preservation layer vibrates at high frequency;
the support column vibrates along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, so that the tows are driven to clean bubbles on the outer surface of the lower end socket of the pressure container, and the bubbles are separated from the surface of the lower end socket of the pressure container;
the diversion track guides the cooling water with lower temperature to the area close to the wall surface of the pressure vessel, so that the cooling effect of the pressure vessel is improved.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a design method of a bubble cleaning and mixing device for improving the cooling effect of the outer wall surface of a reactor pressure vessel, which is characterized in that a novel bubble cleaning and mixing device is arranged in a pressure vessel heat-insulating layer to 'clean' bubbles generated on the outer wall surface of the pressure vessel, cool water is guided to the outer wall surface of the pressure vessel, so that the bubbles generated on the outer wall surface of the pressure vessel can be separated in time, the phenomenon of off-nucleation boiling is prevented, thereby improving the CHF on the outer wall surface, and meanwhile, a certain cooling effect can be achieved through heat conduction, so that the success possibility of IVR is remarkably increased.
2. The invention adopts the way that the filament bundle is set at a distance from the lower end socket of the pressure vessel, thereby not affecting the heat preservation effect of the pressure vessel during the normal operation of the reactor; the support column can vibrate along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, thereby driving the tows to clean bubbles on the outer surface of the lower end socket of the pressure vessel, and under severe accident conditions, the CHF on the outer wall surface of the lower end socket of the pressure vessel is effectively promoted by cleaning bubbles on the wall surface of the pressure vessel and utilizing a diversion track to conduct cooling water diversion and other modes.
3. The tows adopted by the invention can contact the outer wall surface of the pressure vessel under the condition that the lower end enclosure of the pressure vessel is outwards expanded and deformed due to the dead weight of the melt and the high temperature condition, and the cooling of the wall surface of the pressure vessel is assisted by metal heat conduction, so that the CHF of the high-angle area of the lower end enclosure of the pressure vessel can be obviously improved, the risk that the melt in the area passes through the wall surface of the pressure vessel is reduced, and the effectiveness of IVR measures is improved.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic view of the normal installation of a bubble scavenging mixing device for the outer wall surface of a reactor pressure vessel;
FIG. 2 is a schematic installation view of a bubble cleaning and mixing device on the outer wall surface of a reactor pressure vessel under accident conditions;
FIG. 3 is a schematic view of the structure of the bubble scavenging mixing device facing the water flow direction of the reactor pressure vessel outer wall surface;
wherein: 1-a reactor pressure vessel; 2-an insulating layer; 3-supporting columns; 4-stainless steel wire bundles; 5-a diversion track; 6-water inlet.
The specific embodiment is as follows:
the invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiment one:
as shown in fig. 1, the present embodiment provides a bubble scavenging and mixing device for the outer wall surface of a reactor pressure vessel, comprising: the device comprises a silk bundle, a support column and a diversion track, wherein the silk bundle is arranged at one end of the support column, the other end of the support column is arranged at the inner side of a heat insulation layer of a pressure container, and the silk bundle is set at a set distance from a lower seal head of the pressure container; the support column can vibrate along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, so that tows are driven to clean bubbles on the outer surface of the lower end socket of the pressure vessel; the diversion track guides the cooling water with lower temperature to the area close to the wall surface of the pressure vessel, so that the cooling effect of the pressure vessel is improved.
The support column is arranged on the inner side of the heat preservation layer of the pressure vessel and is positioned in a 60-90 DEG area in the flow passage of the heat preservation layer.
The tows are made of metal materials with good heat conducting performance such as stainless steel. The wire bundle comprises a plurality of metal wires, the end parts of the metal wires are positioned on the same plane, the metal wires positioned in the center are of a vertical structure, and the end parts of the metal wires positioned at the periphery are provided with arc-shaped bending sections at the outer sides.
As an implementation mode, the support column includes two pillars, and two pillars are the setting of chevron shape for the silk bundle can be installed on the support column top, and the bottom utilizes the chevron shape to provide effective fixed support, and the chevron shape can effectively be with rivers water conservancy diversion to pressure vessel wall face with water conservancy diversion track cooperation simultaneously, directly erodees the middle-high angle area of pressure vessel low head.
The tows are positioned between the pressure vessel heat-insulating layer and the pressure vessel lower end socket, and the distance between the tows and the pressure vessel lower end socket is set; the set distance is smaller than the expansion deformation of the lower end socket of the pressure vessel caused by the dead weight of the melt and the high temperature condition.
The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel further comprises a diversion track, wherein the diversion track is an arc-shaped semicircular groove, the front surface of the semicircular groove of the diversion track faces the water flow direction in the flow channel, one end of the diversion track is connected with the top end of the supporting column, the other end of the diversion track is arranged on the inner side of the heat insulation layer, part of cooling water can be diverted to the wall surface of the pressure vessel, and the stirring and the separation of bubbles on the wall surface are facilitated. The guide rail can help the support column to be fixed and not to incline due to water impact on one hand, and can guide part of cooling water to the wall surface of the pressure vessel on the other hand, and directly wash the cooling water to the middle-high angle area of the lower end socket of the pressure vessel, thereby being beneficial to washing away bubbles gathered on the wall surface, preventing the generation of vapor film and further improving the CHF on the outer wall surface of the pressure vessel.
The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel is provided with a plurality of bubble cleaning and mixing devices which are arranged in the 60-90 DEG area in the heat preservation layer flow channel in a staggered manner, so that the cleaning and flow guiding action area is increased.
When the reactor normally operates, the metal wire bundles do not contact the outer wall surface of the pressure vessel, and the heat preservation effect of the pressure vessel is not affected.
As shown in fig. 2 and 3, after an accident occurs, the pressure vessel bottom head expands and deforms due to the dead weight of the melt and high temperature conditions, the metal wire bundles contact the outer wall surface of the pressure vessel, the reactor cavity is opened for water injection through a reactor core temperature rising signal (such as reactor core outlet temperature), cooling water enters from the bottom of the heat insulation layer, and a large amount of water vapor is intermittently generated in the process of water contacting the pressure vessel bottom head, so that the heat insulation layer vibrates at high frequency, thereby driving the metal wire bundles to 'clean' the steam bubbles generated on the outer wall surface of the pressure vessel, being beneficial to separating the steam bubbles, improving CHF, and simultaneously playing a role in cooling through heat conduction. Specifically, the heat preservation layer generates high-frequency vibration, and then drives the support column to vibrate, and the tows clean the surface of the pressure vessel lower end socket, so that bubbles are separated from the surface of the pressure vessel lower end socket, the local aggregation of the bubbles is avoided, and the heat conduction efficiency is improved.
The invention is not strictly limited to the examples. According to the method provided by the invention, any IVR measure of the pressurized water reactor can use the method.
Embodiment two:
the embodiment provides a working method of a bubble cleaning and mixing device for the outer wall surface of a reactor pressure vessel, which comprises the following steps:
a plurality of bubble cleaning and mixing devices used for the outer wall surface of the reactor pressure vessel are arranged in a runner between the pressure vessel lower end enclosure and the pressure vessel heat insulation layer in a staggered manner;
the support column is arranged on the inner side of the heat preservation layer of the pressure vessel and is positioned in a 60-90 DEG area in the flow channel of the heat preservation layer;
when an accident occurs, the lower end enclosure of the pressure vessel is outwards expanded and deformed due to the dead weight of the melt and the high temperature condition, and the metal wire bundles are contacted with the outer wall surface of the pressure vessel; the reactor cavity is opened for water injection, cooling water enters from the bottom of the heat preservation layer, a large amount of water vapor is intermittently generated in the process of water contact with the lower end enclosure of the pressure vessel, the heat preservation layer is enabled to vibrate at high frequency, the support column vibrates along with the heat preservation layer when the heat preservation layer is affected by the water vapor to vibrate along with the heat preservation layer, so that tows are driven to clean bubbles on the outer surface of the lower end enclosure of the pressure vessel, the bubbles are separated from the surface of the lower end enclosure of the pressure vessel, local accumulation of the bubbles is avoided, and heat conduction efficiency is improved.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (9)
1. A bubble cleans mixing device for reactor pressure vessel outer wall face, its characterized in that includes: the device comprises a silk bundle, a support column and a diversion track, wherein the silk bundle is arranged at one end of the support column, the other end of the support column is arranged at the inner side of a heat insulation layer of a pressure container, the silk bundle is set at a distance from a lower seal head of the pressure container, and the set distance between the silk bundle and the lower seal head of the pressure container is smaller than the deformation of the lower seal head of the pressure container under the action of the gravity and thermal stress of a melt; the support column can vibrate along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, so that tows are driven to clean bubbles on the outer surface of the lower end socket of the pressure vessel; the diversion track can divert cooling water with lower temperature to the area close to the wall surface of the pressure vessel, thereby improving the cooling effect of the pressure vessel.
2. The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel according to claim 1, wherein the support column is installed inside the heat insulation layer of the pressure vessel, and the support column is located in the 60-90 DEG area in the flow passage of the heat insulation layer.
3. The bubble cleaning and mixing device for the outer wall surface of a reactor pressure vessel according to claim 1, wherein the support columns are arranged in a herringbone manner.
4. The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel according to claim 1, further comprising a guide rail, one end of which is connected with the top end of the support column, and the other end of which is installed inside the heat insulation layer.
5. The bubble cleaning and mixing device for the outer wall surface of a reactor pressure vessel as recited in claim 4, wherein the guide rail is an arc-shaped semicircular groove.
6. The bubble scavenging and mixing device for the outer wall surface of the reactor pressure vessel as recited in claim 5, wherein the front surface of the semicircular groove of the guide rail faces the direction of water flow in the flow channel.
7. The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel according to claim 1, wherein the bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel is provided with a plurality of bubble cleaning and mixing devices which are arranged in the 60-90 DEG area in the heat preservation flow passage in a staggered manner.
8. The bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel as claimed in claim 1, wherein the tows, the support columns and the diversion tracks are made of metal materials with good heat conduction performance.
9. The working method of the bubble cleaning and mixing device for the outer wall surface of the reactor pressure vessel is characterized by comprising the following steps of:
a plurality of bubble cleaning and mixing devices used for the outer wall surface of the reactor pressure vessel are arranged in a runner between the pressure vessel lower end enclosure and the pressure vessel heat insulation layer in a staggered manner;
the support column is arranged on the inner side of the heat preservation layer of the pressure vessel and is positioned in a 60-90 DEG area in the flow channel of the heat preservation layer;
when an accident occurs, the lower end enclosure of the pressure vessel is outwards expanded and deformed due to the dead weight of the melt and the high temperature condition, and the tows are contacted with the outer wall surface of the pressure vessel;
opening a reactor cavity for water injection, wherein cooling water enters from the bottom of the heat preservation layer, and a large amount of water vapor is intermittently generated in the process of water contact with the lower end socket of the pressure vessel, so that the heat preservation layer vibrates at high frequency;
the support column vibrates along with the heat preservation layer when the heat preservation layer is affected by water vapor to generate high-frequency vibration, so that the tows are driven to clean bubbles on the outer surface of the lower end socket of the pressure container, and the bubbles are separated from the surface of the lower end socket of the pressure container;
the diversion track guides the cooling water with lower temperature to the area close to the wall surface of the pressure vessel, so that the cooling effect of the pressure vessel is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310079866.5A CN116078760B (en) | 2023-01-29 | 2023-01-29 | Bubble cleaning and mixing device and method for outer wall surface of reactor pressure vessel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310079866.5A CN116078760B (en) | 2023-01-29 | 2023-01-29 | Bubble cleaning and mixing device and method for outer wall surface of reactor pressure vessel |
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| CN116078760B true CN116078760B (en) | 2024-01-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100035936A (en) * | 2008-09-29 | 2010-04-07 | 경희대학교 산학협력단 | Pressurization light water style atomic reactor outer wall critical line inside prevention system |
| CN101836262A (en) * | 2007-10-22 | 2010-09-15 | 法国原子能及替代能源委员会 | Nuclear reactor with improved cooling in an accident situation |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN112201371A (en) * | 2020-08-31 | 2021-01-08 | 中国核电工程有限公司 | Reactor in-reactor melt retention system adopting spray cooling |
| CN112530610A (en) * | 2020-12-08 | 2021-03-19 | 上海核工程研究设计院有限公司 | Method for improving critical heat flux density outside pressure vessel |
| CN113919241A (en) * | 2020-07-08 | 2022-01-11 | 上海交通大学 | Method and device for measuring critical heat flux of external cooling of pressure vessel |
-
2023
- 2023-01-29 CN CN202310079866.5A patent/CN116078760B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836262A (en) * | 2007-10-22 | 2010-09-15 | 法国原子能及替代能源委员会 | Nuclear reactor with improved cooling in an accident situation |
| KR20100035936A (en) * | 2008-09-29 | 2010-04-07 | 경희대학교 산학협력단 | Pressurization light water style atomic reactor outer wall critical line inside prevention system |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN113919241A (en) * | 2020-07-08 | 2022-01-11 | 上海交通大学 | Method and device for measuring critical heat flux of external cooling of pressure vessel |
| CN112201371A (en) * | 2020-08-31 | 2021-01-08 | 中国核电工程有限公司 | Reactor in-reactor melt retention system adopting spray cooling |
| CN112530610A (en) * | 2020-12-08 | 2021-03-19 | 上海核工程研究设计院有限公司 | Method for improving critical heat flux density outside pressure vessel |
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| CN116078760A (en) | 2023-05-09 |
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