CN204010708U - A kind of built-in material-changing water tank of containment with water scrub function - Google Patents
A kind of built-in material-changing water tank of containment with water scrub function Download PDFInfo
- Publication number
- CN204010708U CN204010708U CN201420293865.7U CN201420293865U CN204010708U CN 204010708 U CN204010708 U CN 204010708U CN 201420293865 U CN201420293865 U CN 201420293865U CN 204010708 U CN204010708 U CN 204010708U
- Authority
- CN
- China
- Prior art keywords
- containment
- built
- water tank
- washing pool
- changing water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000005406 washing Methods 0.000 claims abstract description 56
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The utility model relates to a kind of built-in material-changing water tank of containment with water scrub function, by the built-in material-changing water tank of the routine being set up in parallel and washing pool two parts, formed, between conventional built-in material-changing water tank and washing pool, by the overflow pipe that is positioned at the filling pipe of bottom and be positioned at below the liquid level of top, be connected; In described washing pool, be provided with the admission line being connected with containment atmosphere and the gas exhaust duct being connected with containment filtration exhaust system.The utility model is when guaranteeing built-in material-changing water tank function, increased water scrub function, when containment is carried out filtering emission operation, washing by the high temperature and high pressure gas in containment through washing pool, reduce water vapor concentration and gas temperature, reduce the radioaerosol content carrying in gas, extend the serviceable life of containment filtration exhaust system, improve filtration efficiency, reduce the probability of filtering emission thrashing, reduce the radioactivity release to environment, can bring considerable economic benefit and social benefit.
Description
Technical field
The utility model belongs to nuclear power station safety total system, is specifically related to a kind of built-in material-changing water tank of containment with water scrub function.
Background technology
Nuclear power station material-changing water tank is the critical facility at the water sources such as storage safe shell safety injection system, containment spray system, significant for guaranteeing the safety of nuclear power station.
Current generation Ⅲ nuclear power station, as AP1000, EPR, ACP1000 all adopts the built-in material-changing water tank design of containment, is about to material-changing water tank and is placed in containment, avoids when containment outside material-changing water tank water after being finished, to switch in containment the risk of inefficacy when melt pit is fetched water.
After nuclear power station generation major accident, a large amount of radiomaterials of reactor core are discharged in containment.The effect of containment is to prevent that radiomaterial is discharged into environment.And after nuclear power station generation major accident, conventionally be accompanied by the generation of non-condensable gas, cause containment increasing temperature and pressure, after containment pressure surpasses to a certain degree, just likely occur because superpressure causes containment to lose integrality, cause a large amount of radiomaterials to be discharged into environment.
Conventionally the measure of alleviating the long-term increasing temperature and pressure of containment is to make the gas in containment pass through filtering emission system, radiomaterial is carried out after certain removal, then be discharged into environment.Because the gas in containment is in high-temperature high-pressure state, and contain a large amount of water vapor (surpass 70%), therefore need constantly containment filtration exhaust system to be carried out to moisturizing, cooling down operation, just can maintain the filtration efficiency of containment filtration exhaust system.
Utility model content
The purpose of this utility model is for prior art defect, a kind of built-in material-changing water tank of containment with water scrub function is provided, when containment is implemented filtering emission operation, the gas of containment filtration exhaust system of making to flow through first passes through the washing pool of built-in material-changing water tank, to the gas in containment, carry out cooling, make water vapor generation condensation wherein, thereby greatly reduce the enthalpy of the gas of the containment filtration exhaust system of flowing through, improve the service time of containment filtration exhaust system, minimizing is because to containment filtration exhaust system, timely moisturizing does not cause the failure risk of containment filtration exhaust system.
The technical solution of the utility model is as follows: a kind of built-in material-changing water tank of containment with water scrub function, by the built-in material-changing water tank of the routine being set up in parallel and washing pool two parts, formed, between conventional built-in material-changing water tank and washing pool, by the overflow pipe that is positioned at the filling pipe of bottom and be positioned at below the liquid level of top, be connected; In described washing pool, be provided with the admission line being connected with containment atmosphere and the gas exhaust duct being connected with containment filtration exhaust system.
Further, the built-in material-changing water tank of containment with water scrub function as above wherein, is provided with non-return valve on described filling pipe, and water can only flow to washing pool by the built-in material-changing water tank of routine.
Further, the built-in material-changing water tank of containment with water scrub function as above, wherein, described overflow pipe, below one end of the built-in material-changing water tank of routine is positioned at the water surface, is positioned at washing pool bottom in one end of washing pool.
Further, the built-in material-changing water tank of containment with water scrub function as above, wherein, the upper end of described admission line is connected with containment atmosphere, lower end connects bubbler, and described bubbler is positioned at washing pool liquid level the following stated overflow pipe above washing pool one side entrance.
Further, the built-in material-changing water tank of containment with water scrub function as above, wherein, the lower end of described gas exhaust duct is positioned at the top of washing pool headroom, and upper end is connected with containment filtration exhaust system.
Further, the built-in material-changing water tank of containment with water scrub function as above wherein, is provided with exhaust capillary in described washing pool, and a side of described exhaust capillary is positioned at the top of washing pool headroom, and opposite side is connected with containment atmosphere.
Further, the built-in material-changing water tank of containment with water scrub function as above, wherein, described washing pool inwall is covered by the steel lining with sealing.
The beneficial effects of the utility model are as follows: the utility model is when guaranteeing conventional built-in material-changing water tank function, when containment is carried out filtering emission operation, high temperature and high pressure gas in containment is first passed through to the washing of washing pool, the water vapor concentration that accounts for gas 70% above share in containment is effectively reduced, reduce gas temperature, reduced the radioaerosol content carrying in gas simultaneously.By the washing of washing pool, gas enthalpy and the flow velocity of containment filtration exhaust system filtrator of can making to flow through effectively reduces, thereby extended the serviceable life of containment filtration exhaust system, improve the filtration efficiency of containment filtration exhaust system filtrator, the a large amount of radioactivity release probability that cause because of filtering emission thrashing after nuclear power station generation major accident are significantly reduced, reduce the radioactivity release to environment, brought considerable economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is a kind of built-in material-changing water tank structural representation of containment with water scrub function of the utility model.
In figure: 1. conventional built-in material-changing water tank 2. washing pool 3. filling pipe 4. non-return valve 5. overflow pipe 6. admission line 7. bubbler 8. gas exhaust duct 9. exhaust capillaries
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, a kind of built-in material-changing water tank of containment with water scrub function provided by the utility model, is comprised of the built-in material-changing water tank 1 of the routine being set up in parallel and washing pool 2 two parts, and washing pool 2 inside are covered by steel lining, have certain sealing.Between conventional built-in material-changing water tank 1 and washing pool 2, by being positioned at the filling pipe 3 of basin bottom, be connected with the overflow pipe 5 being positioned at below the liquid level of top, pond.Filling pipe 3 upstreams are provided with non-return valve 4, and water can only flow to washing pool 2 by the built-in material-changing water tank 1 of routine.One end that overflow pipe 5 is positioned at conventional built-in material-changing water tank 1 is positioned at water surface below, and the one end that is positioned at washing pool 2 is positioned at basin bottom.
In washing pool 2, also comprise admission line 6, bubbler 7, gas exhaust duct 8, exhaust capillary 9.Admission line 6 tops are connected with containment atmosphere, and bottom is connected with bubbler 7, and bubbler is positioned at below washing pool liquid level, and are positioned at overflow pipe 5 above washing pool 2 one side entrances.Gas exhaust duct 8 one sides are positioned at the top of washing pool 2 headrooms, and opposite side is connected with containment filtration exhaust system.Exhaust capillary 9 one sides are positioned at the top of washing pool 2 headrooms, and opposite side is connected with containment airspace.
While moving at the nuclear power station initial stage, during to built-in material-changing water tank 1 water filling of routine, the water of built-in material-changing water tank enters washing pool 2 by non-return valve 4 and filling pipe 3, and when built-in material-changing water tank water level surpasses overflow pipe 5, the gas in washing pool 2 is discharged by exhaust capillary 9.
When nuclear power station normally moves, the water level of conventional built-in material-changing water tank 1 and washing pool 2 equates.Water level is positioned at overflow pipe 5 and bubbler 7 tops, and the isolation valve between gas exhaust duct 8 and containment filtration exhaust system cuts out, to maintain the isolation of containment and environment.
After nuclear power station has an accident, safety injection system and containment spray system can be from built-in material-changing water tank 1 water intakings of routine, inject respectively reactor core and implement cooling to containment, when the water level of the built-in material-changing water tank of routine drops to overflow pipe 5 when following, effect due to non-return valve 4, water in washing pool can outwards not flow out, and has guaranteed its needed water level when work.
After nuclear power station generation major accident, a large amount of radiomaterials are discharged in containment.When containment cooling system lost efficacy, and produced by non-condensable gas, cause containment increasing temperature and pressure, while reaching containment filtration discharge opening pressure, operator, according to instruction, opens the valve between gas exhaust duct 8 and containment filtration exhaust system, and containment is implemented to filtering emission operation.Now, because containment pressure is high, pressure differential between containment and environment is far above the pressure differentials that cause different from bubbler height of liquid level in washing pool, and because the height of bubbler 7 is positioned at the height of washing pool higher than overflow pipe 5, therefore the gas in containment enters below the water surface in washing pool by admission line 6 and bubbler 7, and be dispersed into many minute bubbles, fully contact with the solution in washing pool, in the containment gas making, share surpasses the more than 70% a large amount of condensations of water vapor composition, reduced the temperature of containment gas, simultaneously, condensation along with water vapor, part radioaerosol is also dissolved in water.
Gas in containment, after the washing of liquid in washing pool 2, enters the headroom of washing pool, then enters containment filtration exhaust system through gas exhaust duct 8, after the filtration of filtering emission system, is discharged in environment.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (7)
1. the built-in material-changing water tank of containment with water scrub function, it is characterized in that: by the built-in material-changing water tank of the routine being set up in parallel (1) and washing pool (2) two parts, formed, between conventional built-in material-changing water tank (1) and washing pool (2), by being positioned at the filling pipe (3) of bottom and the overflow pipe (5) being positioned at below the liquid level of top, be connected; In described washing pool (2), be provided with the admission line (6) being connected with containment atmosphere and the gas exhaust duct (8) being connected with containment filtration exhaust system.
2. the built-in material-changing water tank of containment with water scrub function as claimed in claim 1, it is characterized in that: non-return valve (4) is installed on described filling pipe (3), and water can only flow to washing pool (2) by conventional built-in material-changing water tank (1).
3. the built-in material-changing water tank of containment with water scrub function as claimed in claim 1, it is characterized in that: described overflow pipe (5) is positioned at water surface below in one end of the built-in material-changing water tank of routine (1), in one end of washing pool (2), be positioned at washing pool (2) bottom.
4. the built-in material-changing water tank of containment with water scrub function as claimed in claim 3, it is characterized in that: the upper end of described admission line (6) is connected with containment atmosphere, lower end connects bubbler (7), and described bubbler (7) is positioned at washing pool liquid level the following stated overflow pipe (5) in the top of washing pool (2) one side entrances.
5. the built-in material-changing water tank of containment with water scrub function as claimed in claim 1, is characterized in that: the lower end of described gas exhaust duct (8) is positioned at the top of washing pool headroom, and upper end is connected with containment filtration exhaust system.
6. the built-in material-changing water tank of containment with water scrub function as claimed in claim 1, it is characterized in that: in described washing pool (2), be provided with exhaust capillary (9), one side of described exhaust capillary (9) is positioned at the top of washing pool headroom, and opposite side is connected with containment atmosphere.
7. the built-in material-changing water tank of containment with water scrub function as claimed in claim 1, is characterized in that: described washing pool (2) inwall is covered by the steel lining with sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293865.7U CN204010708U (en) | 2014-06-04 | 2014-06-04 | A kind of built-in material-changing water tank of containment with water scrub function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293865.7U CN204010708U (en) | 2014-06-04 | 2014-06-04 | A kind of built-in material-changing water tank of containment with water scrub function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010708U true CN204010708U (en) | 2014-12-10 |
Family
ID=52050671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420293865.7U Withdrawn - After Issue CN204010708U (en) | 2014-06-04 | 2014-06-04 | A kind of built-in material-changing water tank of containment with water scrub function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078085A (en) * | 2014-06-04 | 2014-10-01 | 中国核电工程有限公司 | Containment built-in refueling water tank with washing function |
-
2014
- 2014-06-04 CN CN201420293865.7U patent/CN204010708U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078085A (en) * | 2014-06-04 | 2014-10-01 | 中国核电工程有限公司 | Containment built-in refueling water tank with washing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20161005 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |