CN102708932A - Containment filtering and discharging system of twin-reactor nuclear power plant - Google Patents
Containment filtering and discharging system of twin-reactor nuclear power plant Download PDFInfo
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- CN102708932A CN102708932A CN2012101919584A CN201210191958A CN102708932A CN 102708932 A CN102708932 A CN 102708932A CN 2012101919584 A CN2012101919584 A CN 2012101919584A CN 201210191958 A CN201210191958 A CN 201210191958A CN 102708932 A CN102708932 A CN 102708932A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a containment filtering and discharging system of a twin-reactor nuclear power plant, and the containment filtering and discharging system comprises a single-reactor configured filtering and discharging assembly and a downstream discharging assembly which is shared by two reactors, wherein the filtering and discharging assembly comprises a containment penetrating piece penetrating a nuclear power plant containment and a containment discharging pipeline penetrating the containment penetrating piece to be connected with a nuclear power plant unit, the downstream discharging assembly comprises an exhaust main pipe which is shared by the two reactors and connected with the containment discharging pipeline and a nuclear power plant chimney which is shared by the two reactors and is used for accommodating the exhaust main pipe. The filtering and discharging assembly is respectively configured for the two nuclear power plant units, so that the filtering and discharging volume requirement when the containments of the two units are simultaneously over-pressured can be met, the two unit containments are free from being manually and alternately operated to discharge the pressure, and each unit is independently operated, so that convenience in releasing the pressure can be realized.
Description
Technical field
The present invention relates to a kind of security system of nuclear power plant, in particular, the present invention relates to a kind of twin reactor station containment filtration exhaust system.
Background technology
The containment filtration exhaust system of existing two heap PWR nuclear power plants designs according to shared and the non-shockproof requirements of two heaps, and this design does not consider that the situation of major accident takes place simultaneously for two in same factory site or many units.The relief capabilities of the shared containment filtration exhaust system of two heaps after two units simultaneously major accident take place is under suspicion.Containment filtration exhaust system for two heap shared design; In case major accident takes place in two units simultaneously; Though can carry out the release discharging to two unit safety shells in turn through manual operation; Can satisfy containment pressure release demand within a certain period of time, but the capacity of wet filter and discharge capacity can not meet the demands fully.
In view of this, necessaryly provide a kind of and when nuclear power plant's unit has an accident, make things convenient for pressure release, can satisfy the npp safety shell filtering emission system that filtering emission demand and the accident unit of avoiding pollute each other.
Summary of the invention
The objective of the invention is to: a kind of twin reactor station containment filtration exhaust system that when nuclear power plant's unit has an accident, makes things convenient for pressure release, can satisfy the filtering emission demand is provided, to overcome the shortcomings and deficiencies of existing npp safety shell filtering emission system.
In order to realize the foregoing invention purpose; The invention provides a kind of twin reactor station containment filtration exhaust system; It comprises the filtering emission assembly and the shared downstream drain assembly of two-shipper of single heap configuration; The filtering emission assembly comprises through the containment penetration of nuclear power plant's unit safety shell, passes the containment bleeder line that containment penetration is connected with the nuclear power plant unit, and the downstream drain assembly comprises the shared female pipe of exhaust of the two-shipper group that is connected with said containment bleeder line, nuclear power plant's chimney that the female pipe of said exhaust is held in shared being used to of two-shipper group.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, said containment bleeder line is respectively arranged with non-return valve before convergeing to the female pipe of exhaust.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, the containment bleeder line between said containment penetration and the non-return valve is provided with wet filter, and said wet filter is single respectively heap configuration on every unit.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, the containment bleeder line place between said containment penetration and the wet filter is provided with containment isolating valve.
Improvement as twin reactor station containment filtration exhaust system of the present invention; Said wet filter is provided with the waste liquid reflux pipeline separately and is connected with the containment bleeder line at the wet filter upper reaches; Said waste liquid reflux pipeline is provided with waste liquid reflux pipeline isolation valve; The connecting portion of said waste liquid reflux pipeline and said containment bleeder line is between said wet filter and said containment isolating valve, and the containment bleeder line place between said wet filter and the said non-return valve is provided with backwash valve.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, outside said containment, also be provided with barrier shield, the control lever separately of said containment isolating valve, waste liquid reflux pipeline isolation valve and backwash valve all is arranged in said barrier shield.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, said containment bleeder line disposes the radioactive matter monitoring instrument respectively separately, and said radiating matter measuring instrument is between said backwash valve and said non-return valve.
Improvement as twin reactor station containment filtration exhaust system of the present invention; Said containment bleeder line disposes orifice plate and rupture disk respectively separately; Said rupture disk is between said backwash valve and said radiating matter measuring instrument, and said orifice plate is between said backwash valve and said rupture disk.
As the improvement of twin reactor station containment filtration exhaust system of the present invention, the filtering emission assembly is provided with the said containment isolating valve of twice.
The useful technique effect of twin reactor station containment filtration exhaust system of the present invention is: in twin reactor station containment filtration exhaust system of the present invention; Because to the configurating filtered Exhaust assembly of the single respectively heap of two nuclear power plant's units; Can satisfy two unit safety shells filtering emission capacity requirement during superpressure at the same time; And need in turn not carry out the pressure release discharging to two unit safety shells through manual operation, unit operation separately get final product, pressure release makes things convenient for.
Description of drawings
Below in conjunction with accompanying drawing and embodiment twin reactor station containment filtration exhaust system of the present invention is elaborated.
Fig. 1 is the structural representation of twin reactor station containment filtration exhaust system of the present invention.
Embodiment
In order to make goal of the invention of the present invention, technical scheme and useful technique effect more clear, below in conjunction with accompanying drawing and embodiment, to twin reactor station containment filtration exhaust system of the present invention further explain.Should be understood that the embodiment of describing in this instructions only is in order to explain the present invention, is not in order to limit the present invention.
Shown in Figure 1 for an embodiment of twin reactor station containment filtration exhaust system of the present invention; It comprises the filtering emission assembly and the shared downstream drain assembly of two-shipper of single heap configuration; The filtering emission assembly comprises through the containment penetration 2 of nuclear power plant's unit safety shell, passes the containment bleeder line 1 that containment penetration 2 is connected with the nuclear power plant unit, and the downstream drain assembly comprises that the female pipe of the shared exhaust of the two-shipper group that is connected with containment bleeder line 1 12, shared being used to of two-shipper group hold nuclear power plant's chimney 13 of the female pipe 12 of exhaust.
In twin reactor station containment filtration exhaust system of the present invention; Because to the configurating filtered Exhaust assembly of the single respectively heap of two nuclear power plant's units; Can satisfy two unit safety shells filtering emission capacity requirement during superpressure at the same time; And need in turn not carry out the pressure release discharging to two unit safety shells through manual operation, unit operation separately get final product, pressure release makes things convenient for.
Particularly, containment bleeder line 1 is respectively arranged with non-return valve 11 before convergeing to the female pipe 12 of exhaust, i.e. non-return valve 11 single heap configurations.In the npp safety shell filtering emission system of the female pipe of shared exhaust; When a unit has an accident; Move back to easily in another system pipeline and equipment that does not have an accident with radioactive discharging tail gas, the cleansing solution in the contaminated filter equipment container influences its filtration efficiency and filtration capacity.Be provided with system pipeline and equipment that the unit that can avoid when non-return valve 11 can make two unit lists heap configuration containment filtration systems having an accident pollutes another unit that do not have an accident.Because the effect of non-return valve 11 converges to just can not moving back in the system pipeline and equipment of the unit that do not have an accident with radioactive discharging tail gas of the female pipe 12 of exhaust, thereby avoids the cleansing solution in the contaminated filter equipment container.
Further, the containment bleeder line 11 between containment penetration 2 and the non-return valve 11 is provided with wet filter 4, and wet filter 4 is single respectively heap configuration on every unit.The containment filtration exhaust system of existing two heap configurations is by two shared cover wet filter equipment of unit; Through shared wet filter equipment two units are carried out pressure release in turn and filter, and arrange to atmospheric environment through the female pipe of the shared exhaust of two-shipper group and the chimney gas after with washing and filtering.Every unit all disposes wet filter 4, in the time of can guaranteeing that two units meet accident accident, can filter simultaneously, need not manual switching, avoids polluting each other between the unit, prevents to press in the unit safety shell too high.Twin reactor station containment filtration exhaust system of the present invention; Owing to adopted the structure of single heap configuration wet filter 4; Can satisfy two unit safety shells filtering emission capacity requirement during superpressure at the same time; And need in turn not carry out the pressure release discharging to two unit safety shells through manual operation, unit operation separately get final product, pressure release makes things convenient for.
More preferably, containment bleeder line 1 place between containment penetration 2 and the wet filter 4 is provided with containment isolating valve 3.In illustrated embodiment; Twin reactor station containment filtration exhaust system of the present invention is provided with containment isolating valve 3; Satisfy the requirement of containment safe isolation; And the antidetonation grade is a highest level, and the containment isolating valve 3 of system still can be opened after earthquake takes place, and has ensured that twin reactor station containment filtration exhaust system of the present invention can normally move.Wet filter 4 is an antidetonation level class, can being kept perfectly property after earthquake takes place and carry out its function.
Further; Wet filter is provided with waste liquid reflux pipeline 5 separately and is connected with the containment bleeder line 1 at wet filter 4 upper reaches; Waste liquid reflux pipeline 5 is provided with waste liquid reflux pipeline isolation valve 51; The connecting portion of waste liquid reflux pipeline 5 and containment bleeder line 1 is between wet filter 4 and containment isolating valve 3, and the containment bleeder line place between wet filter 4 and the non-return valve 11 is provided with backwash valve 6.Because the wet filter 4 in single heap configuration is provided with waste liquid reflux pipeline 5 and waste liquid reflux pipeline isolation valve 51 respectively; Like this; After system's operation finishes; Radioactive liquid waste in the accident unit filter plant is back in the containment of accident unit, can effectively reduces radiomaterial and be discharged into the risk in the environment, avoid radioactive liquid waste to pollute the unit that does not have an accident.
After the containment pressure of accident unit is reduced to safety value; Operations staff's manual-lock backwash valve 6; Open waste liquid reflux pipeline isolation valve 51, the radioactive liquid waste in the wet filter 4 relies on gravity reflux in the containment of accident unit, and closed safe shell isolation valve 3 is limited in radiomaterial in the containment then; Thereby not only can effectively reduce the risk that radiomaterial is discharged into environment, and can prevent that radioactive waste from polluting the unit that does not have an accident.
Preferably, outside containment, also be provided with barrier shield 9, the control lever separately of containment isolating valve 3, waste liquid reflux pipeline isolation valve 51 and backwash valve 6 all is arranged in barrier shield 9.Barrier shield 9 is set outside containment, and after the control lever separately of isolation valve 3, waste liquid reflux pipeline isolation valve 51 and backwash valve 6 all was arranged at barrier shield 9, the operations staff operated through teletransmission and realizes controlling, thereby reduced operations staff's radiation dose.The filter plant of two units is arranged in adjoining room, can make things convenient for the routine test and the maintenance of unit normal operation period equipment; In addition, when two units the major accident system takes place simultaneously need put into operation, operations staff's running time can obviously reduce, and reduced personnel collective radiation dose.
More preferably, containment bleeder line 1 disposes radioactive matter monitoring instrument 10 respectively separately, and radiating matter measuring instrument 10 is between backwash valve 6 and non-return valve 11.The containment bleeder line 1 of two unit safety shell filtering emission systems is configuration radioactive matter monitoring instrument 10 separately respectively, makes things convenient for nuclear power plant's operation and emergency personnel to monitor the interior radiomaterial of unit safety shell separately to the environmental emission total amount.
More preferably, the containment bleeder line disposes orifice plate 7 and rupture disk 8 respectively separately, and rupture disk 8 is between backwash valve 6 and radiating matter measuring instrument 10, and orifice plate 7 is between backwash valve 6 and rupture disk 8.When pressure surpasses the burst pressure of rupture disk 8; Rupture disk 8 is opened; Flow to the shared nuclear power plant's chimney 13 of two-shipper group behind the monitoring channel of gas behind the washing and filtering through radiomaterial measurement instrument 10; The female pipe 12 of final exhaust in chimney 13 is arranged to atmospheric environment, thereby has realized the discharging decompressing of containment.
More preferably, the filtering emission assembly is provided with twice containment isolating valve 3.In illustrated embodiment; Twin reactor station containment filtration exhaust system of the present invention is provided with twice containment isolating valve 3; Satisfy the double-deck safe isolation requirement of containment; And the antidetonation grade is a highest level, and the security of system isolation valve still can be opened after earthquake takes place, and has ensured that twin reactor station containment filtration exhaust system of the present invention can normally move.Wet filter 4 is an antidetonation level class, can being kept perfectly property after earthquake takes place and carry out its function.The filtering emission system is provided with twice containment isolating valve 3, at the containment filtration exhaust system twice containment isolating valve 3 is set and can satisfies the double-deck safe isolation requirement of containment.
Please continue referring to shown in Figure 1, wet filter 4 front and back positions that dispose at single heap are provided with waste liquid reflux pipeline 5 and backwash valve 6, and waste liquid reflux pipeline 5 is provided with waste liquid reflux pipeline isolation valve 51.The containment bleeder line 1 of two unit safety shell filtering emission systems is respectively equipped with a non-return valve 11 before convergeing to the female pipe 12 of exhaust; And between rupture disk 8 and non-return valve 11, disposed radioactive matter monitoring instrument 10 separately separately; Be provided with barrier shield 9 before the valve that after containment isolating valve 3, waste liquid reflux pipeline isolation valve 51 and backwash valve 6 etc. have an accident, needs to operate, operate through teletransmission and realize.It is understandable that the filter plant of two units preferably is arranged in adjoining room.
When nuclear power plant's unit normally moves, be in stand-by state, twice containment isolating valve 3 keeps shut.After major accident takes place in nuclear power plant; When the pressure of the containment of accident unit is increased to the design pressure value; The manually opened containment isolating valve 3 of operations staff; Be with radioactive mixed gas to get into wet filter 4 through containment bleeder line 1 and containment penetration 2 in the containment, radgas washs and filters through wet filter 4.When pressure surpasses the burst pressure of rupture disk 8; Rupture disk 8 is opened; Flow to the shared nuclear power plant's chimney 13 of two-shipper group behind the monitoring channel of gas behind the washing and filtering through radiomaterial measurement instrument 10; The female pipe 12 of final exhaust in chimney 13 is arranged to atmospheric environment, thereby has realized the discharging decompressing of containment.
According to above-mentioned principle, the present invention can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this instructions, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (9)
1. twin reactor station containment filtration exhaust system; It is characterized in that: said twin reactor station containment filtration exhaust system comprises the filtering emission assembly and the shared downstream drain assembly of two-shipper of single heap configuration; The filtering emission assembly comprises through the containment penetration of nuclear power plant's unit safety shell, passes the containment bleeder line that containment penetration is connected with the nuclear power plant unit, and the downstream drain assembly comprises the shared female pipe of exhaust of the two-shipper group that is connected with the containment bleeder line, nuclear power plant's chimney that the female pipe of exhaust is held in shared being used to of two-shipper group.
2. twin reactor station containment filtration exhaust system according to claim 1 is characterized in that: said containment bleeder line is respectively arranged with non-return valve before convergeing to the female pipe of exhaust.
3. twin reactor station containment filtration exhaust system according to claim 2; It is characterized in that: the containment bleeder line between said containment penetration and the non-return valve is provided with wet filter, and said wet filter is single respectively heap configuration on every unit.
4. twin reactor station containment filtration exhaust system according to claim 3 is characterized in that: the containment bleeder line place between said containment penetration and the wet filter is provided with containment isolating valve.
5. twin reactor station containment filtration exhaust system according to claim 4; It is characterized in that: said wet filter is provided with the waste liquid reflux pipeline separately and is connected with the containment bleeder line at the wet filter upper reaches; Said waste liquid reflux pipeline is provided with waste liquid reflux pipeline isolation valve; The connecting portion of said waste liquid reflux pipeline and said containment bleeder line is between said wet filter and said containment isolating valve, and the containment bleeder line place between said wet filter and the said non-return valve is provided with backwash valve.
6. twin reactor station containment filtration exhaust system according to claim 5; It is characterized in that: outside said containment, also be provided with barrier shield, the control lever separately of said containment isolating valve, waste liquid reflux pipeline isolation valve and backwash valve all is arranged in said barrier shield.
7. twin reactor station containment filtration exhaust system according to claim 4; It is characterized in that: said containment bleeder line disposes the radioactive matter monitoring instrument respectively separately, and said radiating matter measuring instrument is between said backwash valve and said non-return valve.
8. twin reactor station containment filtration exhaust system according to claim 4; It is characterized in that: said containment bleeder line disposes orifice plate and rupture disk respectively separately; Said rupture disk is between said backwash valve and said radiating matter measuring instrument, and said orifice plate is between said backwash valve and said rupture disk.
9. twin reactor station containment filtration exhaust system according to claim 4 is characterized in that: the filtering emission assembly is provided with the said containment isolating valve of twice.
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| CN2012101919584A CN102708932A (en) | 2012-06-12 | 2012-06-12 | Containment filtering and discharging system of twin-reactor nuclear power plant |
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| CN2012101919584A CN102708932A (en) | 2012-06-12 | 2012-06-12 | Containment filtering and discharging system of twin-reactor nuclear power plant |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750993A (en) * | 2012-06-28 | 2012-10-24 | 中国核电工程有限公司 | Passive containment accident pressure-releasing system capable of containing discharged gas |
| CN103413578A (en) * | 2013-07-12 | 2013-11-27 | 中国核电工程有限公司 | Two-unit alternative-discharging method of containment vessel filtering discharging system |
| CN103871489A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Passive filter discharge system for underground nuclear power station |
| CN104934080A (en) * | 2015-06-26 | 2015-09-23 | 上海核工程研究设计院 | Main water supply system of double-reactor nuclear power station |
| CN104979020A (en) * | 2015-05-20 | 2015-10-14 | 中国核动力研究设计院 | Hydrogen risk control system and control method for small-power nuclear reactor containment |
| CN105122376A (en) * | 2013-03-27 | 2015-12-02 | 阿海珐有限公司 | Venting system for the containment structure of a nuclear installation |
| CN106384607A (en) * | 2016-10-08 | 2017-02-08 | 哈尔滨工程大学 | Containment filtering and discharging system capable of carrying out passive operation for a long term |
| CN106525379A (en) * | 2016-11-14 | 2017-03-22 | 北京航天长征飞行器研究所 | Air exhausting device and method employed by two sets of high-temperature supersonic wind tunnels jointly |
| CN109147981A (en) * | 2018-08-22 | 2019-01-04 | 上海核工程研究设计院有限公司 | A kind of nuclear power plant containment shell filtration exhaust system |
| CN112473340A (en) * | 2020-11-10 | 2021-03-12 | 中广核工程有限公司 | Nuclear power plant containment filtering and discharging system |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750993B (en) * | 2012-06-28 | 2015-09-30 | 中国核电工程有限公司 | There is the passive containment accidental depressurization system of gas entrapments function of releasing |
| CN102750993A (en) * | 2012-06-28 | 2012-10-24 | 中国核电工程有限公司 | Passive containment accident pressure-releasing system capable of containing discharged gas |
| CN105122376A (en) * | 2013-03-27 | 2015-12-02 | 阿海珐有限公司 | Venting system for the containment structure of a nuclear installation |
| CN103413578B (en) * | 2013-07-12 | 2016-02-24 | 中国核电工程有限公司 | Containment filtration exhaust system two-shipper group alternating discharge method |
| CN103413578A (en) * | 2013-07-12 | 2013-11-27 | 中国核电工程有限公司 | Two-unit alternative-discharging method of containment vessel filtering discharging system |
| CN103871489A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Passive filter discharge system for underground nuclear power station |
| CN103871489B (en) * | 2014-03-07 | 2015-12-30 | 长江勘测规划设计研究有限责任公司 | The non-active filtering emission system of underground nuclear power station |
| CN104979020B (en) * | 2015-05-20 | 2017-05-03 | 中国核动力研究设计院 | Hydrogen risk control system and control method for small-power nuclear reactor containment |
| CN104979020A (en) * | 2015-05-20 | 2015-10-14 | 中国核动力研究设计院 | Hydrogen risk control system and control method for small-power nuclear reactor containment |
| CN104934080A (en) * | 2015-06-26 | 2015-09-23 | 上海核工程研究设计院 | Main water supply system of double-reactor nuclear power station |
| CN104934080B (en) * | 2015-06-26 | 2017-05-31 | 上海核工程研究设计院 | A kind of pair of main feed system of reactor of nuclear power plant |
| CN106384607B (en) * | 2016-10-08 | 2017-11-21 | 哈尔滨工程大学 | A kind of containment filtration exhaust system of long-term passive operation |
| CN106384607A (en) * | 2016-10-08 | 2017-02-08 | 哈尔滨工程大学 | Containment filtering and discharging system capable of carrying out passive operation for a long term |
| CN106525379A (en) * | 2016-11-14 | 2017-03-22 | 北京航天长征飞行器研究所 | Air exhausting device and method employed by two sets of high-temperature supersonic wind tunnels jointly |
| CN106525379B (en) * | 2016-11-14 | 2019-01-15 | 北京航天长征飞行器研究所 | A kind of exhaust apparatus and method that two sets of high temperature ultrasonics speed wind-tunnel is shared |
| CN109147981A (en) * | 2018-08-22 | 2019-01-04 | 上海核工程研究设计院有限公司 | A kind of nuclear power plant containment shell filtration exhaust system |
| CN112473340A (en) * | 2020-11-10 | 2021-03-12 | 中广核工程有限公司 | Nuclear power plant containment filtering and discharging system |
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Application publication date: 20121003 |