CN104064238B - Underground nuclear power station airborne radioactivity effluent passive washing filtering system - Google Patents
Underground nuclear power station airborne radioactivity effluent passive washing filtering system Download PDFInfo
- Publication number
- CN104064238B CN104064238B CN201410264164.5A CN201410264164A CN104064238B CN 104064238 B CN104064238 B CN 104064238B CN 201410264164 A CN201410264164 A CN 201410264164A CN 104064238 B CN104064238 B CN 104064238B
- Authority
- CN
- China
- Prior art keywords
- canister
- tube
- nuclear power
- power station
- filtering system
- 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.)
- Active
Links
Abstract
The invention discloses a kind of underground nuclear power station airborne radioactivity effluent passive washing filtering system, including the canister being arranged in underground chamber, a certain amount of filter iodine solution it is loaded with in canister, the gas inlet pipe connected with containment it is provided with below the sidewall of canister, gas inlet pipe connects with several arms in canister, intensive layout Venturi tube on arm, the top of Venturi tube is less than the liquid level of filter iodine solution, canister top is provided with the gas outlet tube connected with chimney, the lower section of gas outlet tube is provided with metal fiber filter, it is provided with heat-exchange tube between Venturi tube and canister inwall, heat-exchange tube connects with cooling pond, ground, liquid injection pipe and discharging tube is there also is provided on canister sidewall.The present invention combines the feature of underground nuclear power station and the operation principle of Venturi tube, design a kind of passive, self regulation pressure release, can permanently effective operation and the washing filtering system of Reusability.
Description
Technical field
The present invention relates to nuclear power technology, flow out in particular to a kind of underground nuclear power station airborne radioactivity
Thing passive washing filtering system.
Background technology
If nuclear power station generation core meltdown major accident, reactor core fused mass can be sent out with concrete floor
Raw reaction, produces substantial amounts of non-condensing airborne radioactivity effluent, causes containment superpressure, this
Time need to enable containment filtration exhaust system and actively reduce containment pressure, and filter airborne
Radioactive effluent.
The most important equipment of containment filtration exhaust system is exactly filter, different filter meetings
Bring different filter effects.Initially use filter is sand-bed filter and metallic fiber mistake
Filter, sandstone and metallic fiber all have absorption and are detained the effect of airborne radioactivity effluent,
But they all can not remove I effectively, can only play delay action.Occurred in that one later
Plant mixer filter, be made up of nozzle and two-stage gas-liquid separator, it is possible to relatively efficiently remove
Aerosol and I, but need additionaling power.And the developed countries such as current Switzerland are commonly used
The combination filter that is made up of venturi water scrubber and metal fiber filter of filter, its
In Chinese mound, water scrubber is using the pressure of gas of releasing as power source, is not required to exterior power, can go
Except most aerosol and most I, and remaining aerosol can be fine by metal
Dimensional filter device filters further.But this combination filter is disadvantageous in that amount of solution therein
Limited, it is impossible to longtime running, and do not remove the effective ways filtering residual liquid, it is impossible to repeatedly
Use.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and propose a kind of at major accident
In the case of can longtime running, effectively filter that the underground nuclear power station of airborne radioactivity effluent is airborne to be put
Penetrating property effluent passive washing filtering system.
In order to overcome defect present in background technology, a kind of underground nuclear power designed by the present invention
Stand airborne radioactivity effluent passive washing filtering system, including being arranged in underground chamber
Canister, is loaded with a certain amount of filter iodine solution in canister, it is characterized in that, described
Be provided with gas inlet pipe below the sidewall of canister, described gas inlet pipe in canister with
Several arms connect, intensive layout Venturi tube, the top of described Venturi tube on described arm
Portion is less than the liquid level of filter iodine solution, and described canister top is provided with gas outlet tube, described gas
The lower section of body outlet is provided with metal fiber filter, described Venturi tube and canister inwall
Between be provided with heat-exchange tube, described heat-exchange tube connects with the cooling pond on ground.
In technique scheme, below described metal fiber filter, it is provided with demister.Remove
Day with fog is mainly used in removing discharges the drop that gas is carried secretly, prevents the liquid containing radioiodine element
Drip and be discharged to outside canister with discharge gas.
In technique scheme, described heat-exchange tube is arranged twist around Venturi tube.
Heat-exchange tube is arranged in canister twist, to the heat exchange effect of solution in canister more
Good.
In technique scheme, it is provided with in the middle part of the sidewall of described canister and ground solution pool
The liquid injection pipe of connection, the sidewall bottom of described canister is provided with and is connected with waste treatment system
Discharging tube.When the filter iodine solution in canister consumes substantially, when liquid level is close to Venturi tube top,
Also used filter iodine can be discharged by discharging tube molten by liquid injection pipe filling filter iodine solution
Liquid.
In technique scheme, below described gas inlet pipe and arm, it is provided with vertical antidetonation
Support, is provided with horizontal anti-seismic support between described arm and canister sidewall, vertical antidetonation is propped up
Frame and horizontal anti-seismic support, make the internals of canister have good shock resistance.
In technique scheme, described gas inlet pipe also with the reactor hole at containment place
Room connects.Under major accident, native system can be by the airborne radiation in containment and reactor cavern
Property effluent is all passed through in canister.
In technique scheme, described liquid injection pipe is positioned at filter at the height of canister side wall entrance
Between liquid level and the Venturi tube top of iodine solution.The entrance of liquid injection pipe is arranged in canister filter
Between liquid level and the Venturi tube top of iodine solution, ensure from Venturi tube when filling solution
The gas of ejection is all the time below liquid level.
In technique scheme, described liquid injection pipe is provided with the first isolating valve, described discharge opeing
The second isolating valve it is provided with on pipe.First isolating valve controls the injection of filter iodine solution, the second isolation
Valve controls the discharge of filter iodine solution.
The present invention is based on the gas in Venturi tube principle effective filtering safe shell and reactor cavern
Carry radioactive effluent, utilize potential energy difference to realize the decay that passive cooling longtime running produces
Heat, the airborne radioactivity effluent washing filtering after underground nuclear power station generation major accident,
It can effectively be removed filter residual liquid with longtime running.
The present invention combines the feature of underground nuclear power station and the operation principle of Venturi tube, design one
Passive, the washing filtering system of self regulation pressure release.Passive washing filtering system is placed in
In underground chamber, its shock resistance and reliability can be improved.The application of Venturi tube can carry
High to granule, aerosol and the filter effect of I in discharge gas.In the serious thing of nuclear power station
Under therefore, this filtration system can reduce the pressure of containment, effectively filters airborne radioactivity and flows out
Thing.At initial operating stage, this filtration system is not required to the support of other system and the intervention of operator,
And the design of heat-exchange tube and liquid injection pipe ensure that it has the ability of longtime running.If containment
Losing efficacy, airborne radioactivity effluent enters in reactor cavern, and this filtration system has remained able to
Effect filters airborne radioactivity effluent.Realize the discharge function of radioactivity residual liquid, make this filtration be
System can Reusability.
Accompanying drawing explanation
Fig. 1 is underground nuclear power station airborne radioactivity effluent of the present invention passive washing filtering system
Structural representation；
Fig. 2 is gas inlet pipe in Fig. 1, arm, Venturi tube, horizontal anti-seismic support and heat
The planar structure schematic diagram of exchange pipe；
Fig. 3 is the structural representation of Venturi tube in Fig. 1；
In figure: 1. ground, 2. underground chamber, 3. canister, 4. gas inlet pipe, 5.
Pipe, 6. Venturi tube, 6-1. contraction section, 6-2. trunnion, 6-3. diffuser, 6-4. imbibition
Hole, 7. heat-exchange tube, 8. liquid level, 9. demister, 10. metal fiber filter, 11. gas
Body outlet, 12. liquid injection pipes, 13. first isolating valves, 14. solution pools, 15. cooling ponds,
16. vertical para-seismic support, 17. horizontal anti-seismic supports, 18. discharging tubes, 19. second isolating valves.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail, but this enforcement
Example should not be construed as limitation of the present invention.
One underground nuclear power station airborne radioactivity effluent of the present invention as shown in Figure 1 to Figure 3 is non-
Active washing filtering system, including the canister 3 being arranged in underground chamber 2, canister 3
Sidewall below be provided with gas inlet pipe 4, gas inlet pipe 4 respectively with containment and reaction
Heap cavern connects, by the airborne radioactivity stream in containment and reactor cavern under major accident
Go out thing to be passed through in canister 3.It is provided with in the middle part of the sidewall of canister 3 and the solution pool on ground 1
The liquid injection pipe 12 of 14 connections, sidewall bottom are provided with the discharging tube being connected with waste treatment system
18, liquid injection pipe 12 is provided with the first isolating valve 13, discharging tube 18 is provided with second every
From valve 19.When solution reduces and requires supplementation with, then open the first isolating valve 13, utilize gesture
Can the solution in ground 1 solution pool 14 be injected in canister 3 difference, it is ensured that this filtration system
Longtime running, after this filtration system is out of service, on discharging tube 18 can be opened
Two isolating valves 19, are discharged to radioactivity residual liquid in waste treatment system.Canister 3 top sets
It is equipped with the gas outlet tube 11 that the chimney with underground nuclear power station connects, gas outlet tube 11 times
Side is disposed with metal fiber filter 10 and demister 9.Gas inlet pipe 4 is at metal
Connect with several arms 5 in tank 3, be provided with vertical below gas inlet pipe 4 and arm 5
Para-seismic support 16, is provided with horizontal anti-seismic support 17 between arm 5 and canister 3 sidewall.
Intensive layout Venturi tube 6 on arm 5, from the gas scripture mound from bottom to top of arm 5 output
In pipe 6 and spray.It is provided with heat-exchange tube 7 between Venturi tube 6 and canister 3 inwall,
Heat-exchange tube 7 connects with the cooling pond 15 on ground 1, and cooling pond 15 is arranged in ground 1,
Potential energy difference is utilized to realize the decay heat that passive cooling longtime running produces.Heat-exchange tube 7 designs
For circle shape, arrange twist around Venturi tube 6.
A certain amount of filter iodine solution it is contained with, containing absorbing in filter iodine solution in canister 3
The material of I.Canister 3 has good sealing, prevents the leakage of gas and liquid,
And design pressure can be born.In canister 3, the liquid level 8 of filter iodine solution necessarily be greater than venturi
Pipe 6 and heat-exchange tube 7, and less than demister 9 and metal fiber filter 10, i.e. at liquid level
More than 8 to retain certain gas compartment.Liquid injection pipe 12 is at the height of canister 3 side wall entrance
Degree is between liquid level 8 and Venturi tube 6 top.
Venturi tube 6 is mainly made up of contraction section 6-1, trunnion 6-2 and diffuser 6-3, its
In on trunnion 6-2, have imbibing hole 6-4.Gas containing radioactive grain enters contraction section 6-1
After, flow velocity increases and reaches maximum when entering trunnion.Solution enters literary composition through imbibing hole 6-4
At the trunnion 6-2 of venturi 6, the alternate relative velocity of gas-liquid is very big, and drop is under high velocity air
Atomization, gas humidity reaches saturated.Radioactive grain is moistened by liquid, and between atomized drop
There is fierce collision and cohesion.In diffuser 6-3, gas-liquid speed reduces, and pressure gos up,
Cohesion with radioactive grain as the nuclei of condensation is accelerated, and is condensed into the dust-containing liquid being relatively large in diameter
Drip, be dissolved in the solution of canister 3.
When underground nuclear power station generation major accident and needs take the initiative discharge method reduce
During the pressure of containment, passive washing filtering system enables.In initial 24 hours,
Need not the support of water or power system, without the intervention of operator, by airborne radioactivity
Effluent is passed directly into the gas inlet pipe 4 of this filtration system.Airborne radioactivity effluent passes through
Gas inlet pipe 4 and gas inlet pipe branch 5 enter in Venturi tube 6, in Venturi tube 6
Interior major part radioactive grain, aerosol and most I are dissolved in filter iodine solution
In.Go out liquid level 8 from the residual gas of Venturi tube 6 ejection and enter the gas compartment, through removing
After day with fog 9 and metal fiber filter 10, the drop in gas, radioactive grain are gentle molten
Glue is filtered further.Finally, gas is discharged through gas outlet tube 11.If this filtration is
System runs the long period (more than 24 hours), and the solution consumption in canister 3 is obvious, liquid level
8 already close to Venturi tube 6 top time, need to open isolating valve 13, utilize potential energy difference by ground
Solution in face solution pool 14 is in liquid injection pipe 12 is injected into canister 3；And during owing to running
Between longer, decay heat in system is also increasing, and needs to be cooled down by heat-exchange tube 7 and ground
Pond 15 passive derivation decay heat.If containment lost efficacy, airborne radioactivity effluent enters
In reactor cavern, this filtration system remains able to effectively filter airborne radioactivity effluent.When
After this filtration system is out of service, isolating valve 19 can be opened, through discharging tube 18 by radioactivity
Residual liquid is discharged in waste treatment system.
It should be noted that the amount of solution in this filtration system initial operating stage canister 3 can not
Too much, need to keep enough gas compartments, this is because initial operating stage compressed steam and water
Expansion liquid level can be caused temporarily to raise and reach peak value.If the gas compartment is not enough, solution meeting
Flood demister 9 and metal fiber filter 10, cause parts damages.Then as filtration
The operation of system, amount of solution constantly consumes, and liquid level just can decline.
Other unspecified part is prior art.
Claims (7)
1. a underground nuclear power station airborne radioactivity effluent passive washing filtering system, bag
Include the canister (3) being arranged in underground chamber (2), be loaded with certain in canister (3)
The filter iodine solution of amount, it is characterised in that: it is provided with gas below the sidewall of described canister (3)
Body inlet tube (4), described gas inlet pipe (4) in canister (3) with several arms
(5) connection, the upper intensive layout Venturi tube (6) of described arm (5), described Venturi tube
(6) top is less than the liquid level (8) of filter iodine solution, in the middle part of the sidewall of described canister (3)
It is provided with the liquid injection pipe (12) connected with ground (1) solution pool (14), described canister (3)
Sidewall bottom be provided with the discharging tube (18) being connected with waste treatment system；Described canister
(3) top is provided with gas outlet tube (11), and the lower section of described gas outlet tube (11) sets
It is equipped with metal fiber filter (10), described Venturi tube (6) and canister (3) inwall
Between be provided with heat-exchange tube (7), the cooling water on described heat-exchange tube (7) and ground (1)
Pond (15) connects.
Underground nuclear power station airborne radioactivity effluent the most according to claim 1 is passive
Washing filtering system, it is characterised in that: described metal fiber filter (10) lower section is provided with
Demister (9).
Underground nuclear power station airborne radioactivity effluent the most according to claim 1 is passive
Washing filtering system, it is characterised in that: described heat-exchange tube (7) is around Venturi tube (6)
Arrange twist.
Underground nuclear power station airborne radioactivity effluent the most according to claim 1 is passive
Washing filtering system, it is characterised in that: described gas inlet pipe (4) and arm (5) lower section
It is provided with vertical para-seismic support (16), between described arm (5) and canister (3) sidewall
It is provided with horizontal anti-seismic support (17).
Underground nuclear power station airborne radioactivity effluent the most according to claim 4 is passive
Washing filtering system, it is characterised in that: described gas inlet pipe (4) is with reactor cavern even
Logical.
Underground nuclear power station airborne radioactivity effluent the most according to claim 1 is passive
Washing filtering system, it is characterised in that: described liquid injection pipe (12) is at canister (3) sidewall
The height of entrance is positioned between liquid level (8) and Venturi tube (6) top of filter iodine solution.
Underground nuclear power station airborne radioactivity effluent the most according to claim 6 is passive
Washing filtering system, it is characterised in that: described liquid injection pipe is provided with the first isolating valve on (12)
(13), described discharging tube (18) is provided with the second isolating valve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264164.5A CN104064238B (en) | 2014-06-13 | 2014-06-13 | Underground nuclear power station airborne radioactivity effluent passive washing filtering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264164.5A CN104064238B (en) | 2014-06-13 | 2014-06-13 | Underground nuclear power station airborne radioactivity effluent passive washing filtering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104064238A CN104064238A (en) | 2014-09-24 |
| CN104064238B true CN104064238B (en) | 2016-09-14 |
Family
ID=51551909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410264164.5A Active CN104064238B (en) | 2014-06-13 | 2014-06-13 | Underground nuclear power station airborne radioactivity effluent passive washing filtering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104064238B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409112B (en) * | 2014-12-03 | 2017-07-04 | 中国核动力研究设计院 | Containment recirculating system |
| US10937555B2 (en) * | 2014-12-19 | 2021-03-02 | Caverion Deutschland GmbH | Nuclear power plant |
| CN104505133B (en) * | 2014-12-24 | 2017-05-17 | 长江勘测规划设计研究有限责任公司 | Airborne radioactive anti-diffusion system for underground nuclear power station |
| CN104667663B (en) * | 2015-02-11 | 2017-01-25 | 中国核电工程有限公司 | Aerosol metal fiber filter |
| CN107039096B (en) * | 2017-05-24 | 2023-10-10 | 长江勘测规划设计研究有限责任公司 | Filtering and discharging system for underground nuclear power station under serious accident |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873050A (en) * | 1987-03-23 | 1989-10-10 | Siemens Aktiengesellschaft | Method and apparatus for pressure relief of a nuclear power plant |
| EP0338324A2 (en) * | 1988-04-18 | 1989-10-25 | Siemens Aktiengesellschaft | Nuclear power plant with security confinement |
| WO1990016071A1 (en) * | 1988-05-09 | 1990-12-27 | Siemens Aktiengesellschaft | Nuclear power station with a safety shell and pressure-relieving process |
| CN101700450A (en) * | 2009-11-13 | 2010-05-05 | 核电秦山联营有限公司 | Containment filtration exhaust system |
| CN203966584U (en) * | 2014-06-13 | 2014-11-26 | 长江勘测规划设计研究有限责任公司 | The non-active washing filtering system of underground nuclear power station airborne radioactivity effluent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10328773B3 (en) * | 2003-06-25 | 2005-02-17 | Framatome Anp Gmbh | Nuclear facility |
-
2014
- 2014-06-13 CN CN201410264164.5A patent/CN104064238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873050A (en) * | 1987-03-23 | 1989-10-10 | Siemens Aktiengesellschaft | Method and apparatus for pressure relief of a nuclear power plant |
| EP0338324A2 (en) * | 1988-04-18 | 1989-10-25 | Siemens Aktiengesellschaft | Nuclear power plant with security confinement |
| WO1990016071A1 (en) * | 1988-05-09 | 1990-12-27 | Siemens Aktiengesellschaft | Nuclear power station with a safety shell and pressure-relieving process |
| CN101700450A (en) * | 2009-11-13 | 2010-05-05 | 核电秦山联营有限公司 | Containment filtration exhaust system |
| CN203966584U (en) * | 2014-06-13 | 2014-11-26 | 长江勘测规划设计研究有限责任公司 | The non-active washing filtering system of underground nuclear power station airborne radioactivity effluent |
Non-Patent Citations (2)
| Title |
|---|
| 将核电站反应堆置于地下的设想;陆佑楣;《中国工程科学》;20131231;第15卷(第4期);第41～45页 * |
| 秦山二期安全壳超压后的过滤及卸压;周志贵;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20080615(第6期);第48页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104064238A (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104064238B (en) | Underground nuclear power station airborne radioactivity effluent passive washing filtering system | |
| CN104412328B (en) | Filter for a nuclear reactor containment ventilation system | |
| CN203966584U (en) | The non-active washing filtering system of underground nuclear power station airborne radioactivity effluent | |
| US8804896B2 (en) | Method for depressurizing a nuclear power plant, depressurization system for a nuclear power plant, and associated nuclear power plant | |
| US10438706B2 (en) | Venting system for the containment of a nuclear plant and method of operating the venting system | |
| CN108492892B (en) | Built-in containment filtering and discharging system | |
| KR20150136120A (en) | Venting system for the containment structure of a nuclear installation | |
| CN104078085B (en) | A kind of built-in material-changing water tank of containment with water scrub function | |
| CN107240425A (en) | Integral safety shell filtering emission system | |
| CN108022659A (en) | A kind of containment filtration exhaust system that can efficiently remove organic iodine | |
| EP3336853A1 (en) | Apparatus for filtering radioactive materials | |
| CN103761994A (en) | Spent fuel tank passive after-heat removing system based on water cooling heat pipes | |
| JP6811667B2 (en) | Containment vessel maintenance equipment and containment vessel maintenance method | |
| JP2018095914A (en) | Cleaning method and cleaning device | |
| CN108154939A (en) | A kind of containment filtration exhaust system based on small-sized heap waterborne | |
| JP2017037083A (en) | System, method, and filter for collecting radioactive substance | |
| CN206075833U (en) | A kind of underground nuclear power station cavern type double containment | |
| CN110024046A (en) | Nuclear power station including containment filtration exhaust system | |
| CN112473340A (en) | Nuclear power plant containment filtering and discharging system | |
| CN206355820U (en) | A kind of retracting device for dry absorption tower acid mouth | |
| CN205789140U (en) | A kind of underground nuclear power station ultrasonic air filter | |
| CN110159334A (en) | Tunnel front waste air recycling device | |
| CN204044582U (en) | PH value circulation supervisory system | |
| CN108704398A (en) | A kind of useless fume purifying apparatus of rubber production | |
| KR101542473B1 (en) | Cfvs for nuclear reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |