CN104183283A - Passive containment cooling-water storage tank based on design of external interference - Google Patents
Passive containment cooling-water storage tank based on design of external interference Download PDFInfo
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- CN104183283A CN104183283A CN201310191412.3A CN201310191412A CN104183283A CN 104183283 A CN104183283 A CN 104183283A CN 201310191412 A CN201310191412 A CN 201310191412A CN 104183283 A CN104183283 A CN 104183283A
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- containment
- chilled water
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- reserve tank
- funnel
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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
Abstract
The invention relates to a design technology of a reactor, specifically to a passive containment cooling-water storage tank based on the design of external interference. The passive containment cooling-water storage tank is an important constituent part of a passive containment cooling system, has an annular structure and is arranged at the top of a shielding structure. The middle space of the annular structure forms an air outlet for communicating a steel containment housing and inner-wall space of a shielding building with the outside environment. The air outlet is a funnel-shaped structure with the area of an upper opening being greater than the area of a lower opening. With the design of the funnel-shaped air outlet, the area of an air-contact face can be increased. Under the accident condition of a nuclear power plant, collecting efficiency of cooling water supplied from the outside is higher. In addition, the funnel-shaped air flow passage will form the chimney effect which is more beneficial to heat transfer.
Description
Technical field
The present invention relates to reactor designing technique, be specifically related to the design of containment chilled water reserve tank in a kind of Passive containment cooling system.
Background technology
Passive containment cooling system is important engineered safeguards features, its topmost function is while there is coolant loss (LOCA) or main steam pipe cut (MSLB) accident in containment, derive heat in containment, reduce the temperature and pressure of containment, reduce the pressure reduction of containment atmosphere and external environment condition, the release of radiomaterial after restriction accident.Passive containment cooling system also, as the nourishment source of Spent Fuel Pool, also can, in the situation that losing normal spentnuclear fuel chilled water, provide moisturizing.
Passive containment cooling system, as the relevant ultimate heat sink of safety, is to guarantee the cooling key equipment of metal containment, and Fukushima event experience shows, need to consider the enrich the water of Passive containment cooling system.
The Passive containment cooling system structure of the non-active nuclear power plant of typical case as shown in Figure 1.Under accidental conditions, air enters from shielding structures top entrance 1, flows through after decline passway again oppositely by rising runner, takes away the heat that metal containment chamber wall transmits, finally from high-order exhausr port 2 discharges of air.Containment chilled water reserve tank 3 is set above containment, can be by gravity to metal containment container discharge chilled water.Ringwise, centre forms the high-order exhausr port 2 of air to containment chilled water reserve tank 3.The high-order exhausr port 2 of air at containment chilled water reserve tank 3 middle parts of the non-active nuclear power plant of typical case is cylindric, is unfavorable for outside injection of spraying chilled water.Steel containment vessel is a complete structure during Passive containment cooling system forms.Its outside surface can supply the evaporative cooling of liquid film under design basis accident (DBA) emergency conditions, and by comprehensively arranging with skin shielding structures, flow skirt, top board etc., and form natural convection air, thus temperature and pressure in containment reduced.Shielding structures form the coolant flow channel of steel containment vessel external container air natural circulation.
The reserve tank PCCWST of the Passive containment cooling system (PCS) of typical case's non-active nuclear power plant reactor is antidetonation I kind equipment, for the cooling and fire water cooling, spentnuclear fuel pond of containment after accident provides water source.And PCCWST and outer containment are one, be positioned at the top of outer containment and have the water of large volume, the load of bearing in earthquake should not be underestimated, and due to the importance of this water tank, its shock resistance needs further to confirm.
The 8.3.3.5.4 joint of < < advanced light water reactor nuclear power station real requirement > > URD III volume the 5th chapter requires as follows: " when PCS reserve tank after being finished for 72 hours; by the Natural Circulation of air, to the cooling of containment, should enough prevent that the pressure of containment from surpassing design maximum ability." in the design of the current non-active nuclear power plant of typical case, in accident after 72 hours, when water can not be cooling for containment, containment pressure may surpass maximal value.Therefore, need to guarantee the containment cooling water source in factory and/or outside factory after 72 hours.
Auxiliary water tank PCCAWST and the recirculation pump of pcs system are non-shock-resistant arrangement, if PCCWST loses auxiliary water source, can only provide 72 hours cooling.If lose PCCAWST or recirculation pump, need to consider using fire water or other interim water source as the moisturizing water source of PCCWST.
After accident over 72 hours, when the cooling and spentnuclear fuel pond (SFP) of containment needs chilled water simultaneously, need to carry out the flow between the cooling and SFP moisturizing of balancing safety shell with throttling valve, and this valve is hand valve, under accident conditions, need to consider the convenience of this valve operation.
" foreign intervention " thus refer to that the various resources that can utilize outside nuclear power plant's manpower material resources intervene the ability of alleviating damage sequence to nuclear power plant.Design of nuclear power plant based on " foreign intervention " thought is exactly at the beginning of nuclear power station design, just to set up in advance the contact channel of nuclear power plant and external resource more fully, realizes effective " foreign intervention " more by these channels when accident occurs.
After Fukushima, Japan nuclear power plant accident occurs, the reactor building generation hydrogen explosion of 1 to No. 4 unit of Fukushima nuclear power station, containment vessel is exposed among environment, make, from outside, it is carried out to water filling operation and possessed condition, but, actual conditions are that the helicopter of Self-Defense Forces sprays seawater to nuclear power station and only has a small amount of water to enter into nuclear power station inside.Visible, based on " foreign intervention " design philosophy, the water yield that arrives the chilled water on steel containment vessel surface by the improvement of containment cooling water tank shape being improved to helicopter when chilled water is sprayed at shielding factory building top is very important, and this can further promote the ability of reply nuclear power plant accident.
Summary of the invention
The object of the present invention is to provide the structure of the non-passive safety shell chilled water reserve tank based on " foreign intervention " design that a kind of heat that is conducive to containment derives.
Technical scheme of the present invention is as follows: a kind of non-passive safety shell chilled water reserve tank based on " foreign intervention " design, be arranged on containment top, be integrated with shielding structures, containment chilled water reserve tank is structure ringwise, the central space of loop configuration forms steel containment vessel shell and shields the high-order exhausr port of air that factory building inner wall space is connected with external environment condition, the bottom of containment chilled water reserve tank is provided with gravity drainage device, wherein, the high-order exhausr port of described air is the funnel-shaped structure that upper end open area is greater than lower ending opening area.
Further, the non-passive safety shell chilled water reserve tank based on " foreign intervention " design as above, wherein, the inner wet wall of described containment chilled water reserve tank is stainless steel lining, inner liner stainless steel plate forms sealed water storage tank border.
Beneficial effect of the present invention is as follows: the design concept that the present invention is based on " foreign intervention ", original cylindrical air out is designed to funnel-form, when losing chilled water loading amount or bringing normally into operation chilled water because a variety of causes (as surpassed the earthquake etc. of design basis) occurs to leak, containment cooling water tank exhausts cannot again add time, by helicopter or pump truck, to shielding factory building crestal waterflood, thereby can collect chilled water by the water tank of funnel-shaped structure, steel containment vessel is infiltrated discharge the heat producing after accident in steel containment vessel.The design of the high-order exhausr port of funnel-form can increase the area of meeting sky face, and the efficiency that chilled water is collected is higher; And funnelform air flow channel will form " chimney effect ", be more conducive to heat exchange.
Accompanying drawing explanation
Fig. 1 is the Passive containment cooling system structural representation of AP1000;
Fig. 2 is the containment chilled water storage tank structure schematic diagram that high-order exhausr port is designed to taper;
Fig. 3 is that high-order exhausr port is designed to the barrel-shaped containment chilled water storage tank structure schematic diagram of closing waist;
Fig. 4 is for strengthening the containment chilled water storage tank structure schematic diagram of liquid collecting ability.
In figure, 1. high-order exhausr port 3. containment chilled water reserve tank 4. gravity drainage device 5. metal containments of air intake 2. air
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Basic technical scheme of the present invention is that factory building top arranges the non-passive safety shell chilled water reserve tank 3 of structure ringwise above metal containment 5, the central space of loop configuration forms metal containment shell and shields the high-order exhausr port 2 of air that factory building inner wall space is connected with external environment condition, the bottom of containment chilled water reserve tank is provided with gravity drainage device 4, wherein, the high-order exhausr port 2 of described air is the funnel-shaped structure that upper end open area is greater than lower ending opening area, as shown in Figures 2 and 3.Fig. 2 is the design proposal of the high-order exhausr port of taper, and Fig. 3 is the design proposal of the barrel-shaped high-order exhausr port of closing waist.
The inner wet wall of non-passive safety shell chilled water reserve tank is stainless steel lining, and inner liner stainless steel plate forms sealed water storage tank border, and weld seam therebetween need be made leak check, and leak test passage is set.Water tank is filled demineralized water, and has the required minimum active volume of non-passive safety shell refrigerating function.Water tank integral body is structure ringwise, the central space of loop configuration forms and is communicated with steel containment vessel shell and shields the high-order exhausr port that factory building inner wall space is connected with external environment condition, under accident conditions, the steel containment vessel outside surface being heated is by interfaces such as convection current, radiation and material Transfer, cooling by water and air.Heat is discharged by high-order exhausr port by the air of Natural Circulation with the form of sensible heat and water vapor, and wherein, the high-order exhausr port of described air is the funnel-shaped structure that upper end open area is greater than lower ending opening area.The outward-dipping angle of exhaust side inwall is in the situation of 45 degree, and meeting sky area and increasing 9 times of exhausr port, also will improve 9 times for the collection efficiency of spraying water filling under kindred circumstances, and this lifting on security has significant impact.
The present invention is based on the design concept of " foreign intervention ", the improvement of non-passive safety shell chilled water reserve tank is mainly original cylindrical air out to be designed to funnel-form, when losing chilled water loading amount or bringing normally into operation chilled water because a variety of causes (as surpassed the earthquake etc. of design basis) occurs to leak, containment cooling water tank exhausts cannot again add time, by helicopter, to shielding factory building crestal waterflood, thereby then collect chilled water by tank funnel shape inwall, make steel containment vessel infiltrate the heat producing after accident in discharge steel containment vessel.
Certainly, the shape design that also can further change containment cooling water tank increases the area of meeting sky face, and the efficiency that chilled water is collected is higher.As shown in Figure 4, the upper end open area of high-order exhausr port 2 is designed to basic identical with factory building top size, can more collect like this by outside and spray the chilled water that injects shielding factory building.
After Fukushima, Japan nuclear power plant accident occurs, the helicopter of Self-Defense Forces is sprinkled water and is only had a small amount of water to enter into nuclear power station inside nuclear power station, and this is mainly because the design of Fukushima nuclear power station could not consider can use under major accident the cause of the original like this accident reply means of water spray.It is the design concept based on " foreign intervention " ability that the high-order exhausr port at AP1000 non-passive safety shell top is designed to funnel-form, and the heat that is conducive to containment is derived.
And funnelform air flow channel will form " chimney effect ", be more conducive to heat exchange.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technology thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (2)
- One kind based on " foreign intervention " design non-passive safety shell chilled water reserve tank, be arranged on containment top, be integrated with shielding structures, containment chilled water reserve tank (3) is structure ringwise, the central space of loop configuration forms steel containment vessel shell and shields the high-order exhausr port (2) of air that factory building inner wall space is connected with external environment condition, the bottom of containment chilled water reserve tank (3) is provided with gravity drainage device (4), it is characterized in that: the described high-order exhausr port of air (2) is the funnel-shaped structure that upper end open area is greater than lower ending opening area.
- As claimed in claim 1 based on " foreign intervention " design non-passive safety shell chilled water reserve tank, it is characterized in that: the inner wet wall of described containment chilled water reserve tank (3) is stainless steel lining, and inner liner stainless steel plate forms sealed water storage tank border.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310191412.3A CN104183283A (en) | 2013-05-22 | 2013-05-22 | Passive containment cooling-water storage tank based on design of external interference |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310191412.3A CN104183283A (en) | 2013-05-22 | 2013-05-22 | Passive containment cooling-water storage tank based on design of external interference |
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| CN104183283A true CN104183283A (en) | 2014-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047237A (en) * | 2015-07-21 | 2015-11-11 | 中国核电工程有限公司 | Spent fuel pool spray cooling system capable of combining active mode with passive mode and control method thereof |
| CN105489258A (en) * | 2016-01-04 | 2016-04-13 | 上海核工程研究设计院 | Non-kinetic energy containment vessel cooling system of floating nuclear power plant |
| CN107416379A (en) * | 2017-08-15 | 2017-12-01 | 合肥工业大学 | A kind of passive gravity tank anti-shaking device of AP1000 nuclear power plants |
| WO2021109136A1 (en) * | 2019-12-06 | 2021-06-10 | 中广核研究院有限公司 | Passive secondary side waste heat removal system for nuclear power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB796106A (en) * | 1954-12-22 | 1958-06-04 | Licencia Talalmanyokat | Improvements in or relating to cooling towers |
| CN1108465A (en) * | 1994-01-09 | 1995-09-20 | 谌伦刚 | Anti-drought apparatus of drawing-off collected storaged water |
| CN1046047C (en) * | 1993-03-22 | 1999-10-27 | 西屋电气公司 | Cooling water distribution system |
| CN102568622A (en) * | 2012-01-18 | 2012-07-11 | 中科华核电技术研究院有限公司 | Passive cooling system for cooling spent nuclear fuel in nuclear power plant |
-
2013
- 2013-05-22 CN CN201310191412.3A patent/CN104183283A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB796106A (en) * | 1954-12-22 | 1958-06-04 | Licencia Talalmanyokat | Improvements in or relating to cooling towers |
| CN1046047C (en) * | 1993-03-22 | 1999-10-27 | 西屋电气公司 | Cooling water distribution system |
| CN1108465A (en) * | 1994-01-09 | 1995-09-20 | 谌伦刚 | Anti-drought apparatus of drawing-off collected storaged water |
| CN102568622A (en) * | 2012-01-18 | 2012-07-11 | 中科华核电技术研究院有限公司 | Passive cooling system for cooling spent nuclear fuel in nuclear power plant |
Non-Patent Citations (1)
| Title |
|---|
| 林诚格: "《非能动安全先进核电厂AP1000》", 31 August 2008, article "设备描述", pages: 199-200 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047237A (en) * | 2015-07-21 | 2015-11-11 | 中国核电工程有限公司 | Spent fuel pool spray cooling system capable of combining active mode with passive mode and control method thereof |
| CN105047237B (en) * | 2015-07-21 | 2018-09-25 | 中国核电工程有限公司 | The passive Spent Fuel Pool spray cooling system of active combination and its control method |
| CN105489258A (en) * | 2016-01-04 | 2016-04-13 | 上海核工程研究设计院 | Non-kinetic energy containment vessel cooling system of floating nuclear power plant |
| CN107416379A (en) * | 2017-08-15 | 2017-12-01 | 合肥工业大学 | A kind of passive gravity tank anti-shaking device of AP1000 nuclear power plants |
| WO2021109136A1 (en) * | 2019-12-06 | 2021-06-10 | 中广核研究院有限公司 | Passive secondary side waste heat removal system for nuclear power plant |
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Application publication date: 20141203 |
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