CN205354672U - Active residual heat removal system of open non - of direct current steam generator secondary side - Google Patents
Active residual heat removal system of open non - of direct current steam generator secondary side Download PDFInfo
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- CN205354672U CN205354672U CN201521041542.XU CN201521041542U CN205354672U CN 205354672 U CN205354672 U CN 205354672U CN 201521041542 U CN201521041542 U CN 201521041542U CN 205354672 U CN205354672 U CN 205354672U
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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 utility model belongs to the technical field of reactor safety, concretely relates to active residual heat removal system of open non - of direct current steam generator secondary side. This system design has 2 redundant series, and every including assisting feed -tank, sprinkler, giving the water screen, the barrel section of containment and upper cover submergence are in the shielding poind, and lowest bid height in the containment is arranged to the reactor, supplementary feed -tank is connected through the admission port that supply line placed reactor pressure vessel's direct current steam generator in with in, just is provided with for the water screen in the shielding poind on supply line, and the steam outlet who embeds steam generator passes through the steam pipework and is connected with the sprinkler that sets up in the shielding poind. The utility model discloses an active feedwater and the two stage operational modes of later stage natural circulation mode feedwater directly poured into into of initial stage non - continuously feed water to the steam generator secondary side, shift the reactor waste heat to the shielding poind, and it is higher, more reliable to carry over waste heat efficiency out of.
Description
Technical field
This utility model belongs to reactor safety technical field, is specifically related to a kind of once through steam generator secondary side open type Heat Discharging System of Chinese.
Background technology
Residual heat removal system is the engineered safeguards features of reply nuclear reactor designs basis accident and major accident, existing nuclear power reactor security system mostly adopts the residual heat removal system of active residual heat removal system and passive, system is mostly closed circulation system, operation characteristic is complex, and reliability is low.For the modular reactor adopting once through steam generator, owing to power is little, lose the economical efficiency of scale, how to design not only simple but also reliable security system, be the common difficulty of whole world nuclear energy circle.Once through steam generator secondary side water loading amount is little simultaneously, runs pulsation among tubes in low-power district and flow instability is obvious, is relatively difficult to resolve certainly from the emergent exhaust thermal reliability of once through steam generator secondary side.
Summary of the invention
The purpose of this utility model is in that to provide a kind of once through steam generator secondary side open type Heat Discharging System of Chinese, reliably discharges reactor waste by simplest system, it may be achieved within after design basis accident 7 days, do not need Operator actions.
For reaching above-mentioned purpose, technical solution adopted in the utility model is:
A kind of once through steam generator secondary side open type Heat Discharging System of Chinese, the design of this system has 2 series of redundancy, each column include auxiliary feed-water tank, sprinkler, to water screen；The cylinder section of containment and upper cover are immersed in shielding poind, and reactor is arranged in containment lowest bid high position；Auxiliary feed-water tank is connected with the admission port of the once through steam generator being built in reactor pressure vessel by supply line, being provided with on supply line and in shielding poind to water screen, the steam (vapor) outlet of built-in steam generator is connected with the sprinkler being arranged in shielding poind by steam pipework.
Described auxiliary feed-water tank water loading amount is 200m3, shielding poind water loading amount is 3000m3。
System relies on compression nitrogen flooding influencing meridian supply line in auxiliary feed-water tank to feed water to once through steam generator secondary side at initial operating stage, generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind and Chi Shui after sprinkler diffusion through steam pipework and is mixed to get to condense, thus taking reactor waste and sensible heat out of；Phase after operation, after auxiliary feed-water tank feedwater exhausts, system proceeds to natural circulation mode, Chi Shui in shielding poind relies on the driving force that the temperature difference, potential difference provide to enter once through steam generator secondary side through supply line, generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind and Chi Shui after sprinkler diffusion through steam pipework and is mixed to get to condense, and continues to take away reactor waste and sensible heat；Evaporation after reactor waste that shielding poind Chi Shui is exported and sensible heat heating, transfers heat to ultimate heat sink air；Shielding poind can maintain the long-term Residual heat removal of reactor after moisturizing.
Having the beneficial effect that acquired by this utility model
This utility model adopts initial stage passive to be directly injected into feedwater and later stage natural circulation mode feedwater two benches operational mode, continue to feed water to steam generator secondary side, reactor waste is transferred to shielding poind, a closed circuit fewer than traditional secondary side enclosed Heat Discharging System of Chinese, take waste heat out of in hgher efficiency, more reliable.(1) this utility model is according to the disposable DC characteristic passed through of once through steam generator secondary side current, utilizes compressed nitrogen to provide high drive ram better to solve once through steam generator low-power district and runs pulsation among tubes and a flow instability difficult problem；(2) this utility model makes full use of shielding poind flood loading amount, in the later stage of Residual heat removal, can utilize natural circulation mode, constantly provides feedwater to once through steam generator secondary side；(3) this utility model is except being applied to once through steam generator secondary side discharge reactor waste, it is also possible to discharge reactor waste in Natural Circulation saturation type steam generator secondary side.This utility model is applicable to the integrated module formula reactor that thermal power is 200～1000MW.
Accompanying drawing explanation
Fig. 1 is this utility model once through steam generator secondary side open type Heat Discharging System of Chinese structure chart；
In figure: 1, shielding poind；2, auxiliary feed-water tank；3, sprinkler；4, to water screen；5, once through steam generator；6, reactor；7, metal containment；8, supply line；9, steam pipework.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
As shown in Figure 1, once through steam generator secondary side open type Heat Discharging System of Chinese described in the utility model design has 2 series of redundancy, each column include auxiliary feed-water tank 2, sprinkler 3, to water screen 4, get rid of reactor 6 waste heat to shielding poind 1 by once through steam generator 5 secondary side.
The cylinder section of containment 7 and upper cover are immersed in shielding poind 1, and reactor 6 is arranged in containment 7 lowest bid high position；Auxiliary feed-water tank 2 is connected with the admission port of the once through steam generator 5 being built in reactor pressure vessel by supply line 8, being provided with on supply line 8 and in shielding poind 1 to water screen 4, the steam (vapor) outlet of built-in steam generator 5 is connected with the sprinkler 3 being arranged in shielding poind 1 by steam pipework 9.
Auxiliary feed-water tank 2 water loading amount is about 200m3, shielding poind 1 water loading amount is about 3000m3, by steam generator secondary side eliminating reactor waste to shielding poind 1, it may be achieved within after power-off class design basis accident 7 days, do not need Operator actions.The steam that steam generator secondary side produced is responsible for by sprinkler 3 or steam water interface diffusion is come to be condensed after being sufficiently mixed with the Chi Shui of shielding poind 1.It is mainly used in intercepting in shielding poind 1 foreign body that may be present to water screen 4 and enters steam generator blocking heat-transfer pipe.
System relies on compression nitrogen flooding influencing meridian supply line 8 in auxiliary feed-water tank 2 to feed water to once through steam generator 5 secondary side at initial operating stage, generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind 1 and Chi Shui after sprinkler 3 diffusion through steam pipework 9 and is mixed to get to condense, thus taking reactor 6 waste heat and sensible heat out of.
Phase after operation, after auxiliary feed-water tank 2 feedwater exhausts, system proceeds to natural circulation mode.Chi Shui in shielding poind 1 relies on the driving force that the temperature difference, potential difference provide to enter once through steam generator 5 secondary side through supply line 8, generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind 1 and Chi Shui after sprinkler 3 diffusion through steam pipework 9 and is mixed to get to condense, and continues to take away reactor 6 waste heat and sensible heat.
Evaporation after reactor waste that shielding poind 1 Chi Shui is exported and sensible heat heating, transfers heat to ultimate heat sink-air.Shielding poind 1 can maintain the long-term Residual heat removal of reactor after moisturizing.
Claims (3)
1. an once through steam generator secondary side open type Heat Discharging System of Chinese, it is characterised in that: the design of this system have 2 series of redundancy, each column include auxiliary feed-water tank (2), sprinkler (3), to water screen (4)；The cylinder section of containment (7) and upper cover are immersed in shielding poind (1), and reactor (6) is arranged in the interior lowest bid high position of containment (7)；Auxiliary feed-water tank (2) is connected by the admission port of supply line (8) with the once through steam generator (5) being built in reactor pressure vessel, above and being provided with in shielding poind (1) to water screen (4) at supply line (8), the steam (vapor) outlet of built-in steam generator (5) is connected with the sprinkler (3) being arranged in shielding poind (1) by steam pipework (9).
2. once through steam generator secondary side open type Heat Discharging System of Chinese according to claim 1, it is characterised in that: described auxiliary feed-water tank (2) water loading amount is 200m3, shielding poind (1) water loading amount is 3000m3。
3. once through steam generator secondary side open type Heat Discharging System of Chinese according to claim 1, it is characterized in that: system relies on compression nitrogen flooding influencing meridian supply line (8) in auxiliary feed-water tank (2) to feed water to once through steam generator (5) secondary side at initial operating stage, generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind (1) and Chi Shui after sprinkler (3) diffusion through steam pipework (9) and is mixed to get to condense, thus taking reactor (6) waste heat and sensible heat out of；Phase after operation, after auxiliary feed-water tank (2) feedwater exhausts, system proceeds to natural circulation mode, the inner Chi Shui of shielding poind (1) relies on the driving force that the temperature difference, potential difference provide to enter once through steam generator (5) secondary side through supply line (8), generation steam or the gas-vapor mix after being heated of feeding water arrives entrance shielding poind (1) and Chi Shui after sprinkler (3) diffusion through steam pipework (9) and is mixed to get to condense, and continues to take away reactor (6) waste heat and sensible heat；Evaporation after reactor waste that shielding poind (1) Chi Shui is exported and sensible heat heating, transfers heat to ultimate heat sink air；Shielding poind (1) can maintain the long-term Residual heat removal of reactor after moisturizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521041542.XU CN205354672U (en) | 2015-12-15 | 2015-12-15 | Active residual heat removal system of open non - of direct current steam generator secondary side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521041542.XU CN205354672U (en) | 2015-12-15 | 2015-12-15 | Active residual heat removal system of open non - of direct current steam generator secondary side |
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| Publication Number | Publication Date |
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| CN205354672U true CN205354672U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521041542.XU Active CN205354672U (en) | 2015-12-15 | 2015-12-15 | Active residual heat removal system of open non - of direct current steam generator secondary side |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887263A (en) * | 2015-12-15 | 2017-06-23 | 中国核动力研究设计院 | The secondary laterally opened Heat Discharging System of Chinese of once through steam generator |
| CN108443850A (en) * | 2018-03-29 | 2018-08-24 | 何满潮 | Waste heat collection and utilization system for underground neutron energy power station |
-
2015
- 2015-12-15 CN CN201521041542.XU patent/CN205354672U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887263A (en) * | 2015-12-15 | 2017-06-23 | 中国核动力研究设计院 | The secondary laterally opened Heat Discharging System of Chinese of once through steam generator |
| CN108443850A (en) * | 2018-03-29 | 2018-08-24 | 何满潮 | Waste heat collection and utilization system for underground neutron energy power station |
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