CN102915776B - Passive containment thermal conduction system test method - Google Patents
Passive containment thermal conduction system test method Download PDFInfo
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- CN102915776B CN102915776B CN201210369284.2A CN201210369284A CN102915776B CN 102915776 B CN102915776 B CN 102915776B CN 201210369284 A CN201210369284 A CN 201210369284A CN 102915776 B CN102915776 B CN 102915776B
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- thermal conduction
- conduction system
- passive containment
- containment thermal
- heat
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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 belongs to reactor designing technique, be specifically related to a kind of passive containment thermal conduction system test method.The method, by containment environment after simulated accident, measures the operational factor of passive containment thermal conduction system, calculates the exchange capability of heat of passive containment thermal conduction system, and whether checking passive containment thermal conduction system meets design requirement.The present invention can provide reliable test basis for the engineer applied of passive containment thermal conduction system.
Description
Technical field
The invention belongs to reactor designing technique, be specifically related to a kind of passive containment thermal conduction system test method.
Background technology
Passive containment thermal conduction system (pcs system), for the long-term heat extraction of containment under beyond design basis accident operating mode, comprises the accident relevant with spray system fault to station blackout.Pcs system is also for the accident mitigation of major accident operating mode (if beyond design basis accident develops into the major accident that reactor core obviously worsens).When nuclear power station generation beyond design basis accident (comprising major accident) operating mode, containment pressure and temperature is reduced to acceptable level, to keep the integrality of containment.Pcs system inserts high temperature control device convection heat transfer and the radiation heat transfer of heat exchanger package in containment and containment in utilizing, by the flowing of water in Tube Sheet of Heat Exchanger, continuously the heat in containment is taken to outside containment, at containment peripheral hardware displacement boiler, and in heat-exchanging water tank, condenser is installed, heat in the containment that carrying-off is derived from heat exchanger package, the density difference utilizing the temperature difference of water to cause realizes passive containment heat and discharges, the basic structure of pcs system as shown in Figure 1, in containment inside, heat exchanger package 1 is set, the circulation line of heat exchanger package 1 is through being arranged on the condenser 3 in the heat-exchanging water tank 2 outside containment, heat interchange is carried out with heat-exchanging water tank 2, circulation line is provided with isolation valve, heat-exchanging water tank 2 is also connected with heat conduction water tank 4 and the expansion tank 5 for controlling liquid level respectively.
Due to the non-active heat-exchange system that pcs system is novel, advanced, but never in nuclear power plant, there is practical application, therefore the performability of this system should be verified during first unit regulation; In addition, for ensureing that pcs system runs the reliability in the phase in longevity in nuclear power plant, reply pcs system carries out corresponding routine test or carries out corresponding safety evaluation, guarantees that pcs system function can effectively be alleviated damage sequence when having an accident and ensure containment integrity.
Summary of the invention
The object of the present invention is to provide a kind of debugging of passive containment thermal conduction system and the manner of execution of routine test, determine the installation of passive containment thermal conduction system, run consistent with system design functions, guarantee system security.
Technical scheme of the present invention is as follows: a kind of passive containment thermal conduction system test method, comprises the steps:
(1) passive containment thermal conduction system is set up, and by enclosure device, by the heat interchanger enclosing of passive containment thermal conduction system in a relatively airtight space;
(2) be blown into the damp-heat air of extreme environment in simulating Safety shell from the top of enclosure device, and adjust damp-heat air temperature where necessary;
(3) after being evenly full of damp-heat air in the closed environment of heat interchanger place, open the isolation valve of passive containment thermal conduction system, passive containment thermal conduction system is started working;
(4) by adjusting the temperature of the damp-heat air amount of being blown into and damp-heat air, maintaining enclosing scope environment condition is Environment condition inside containment under passive containment thermal conduction system function;
(5), after passive containment thermal conduction system stable operation a period of time, measure circulating air flowing speed, discharge, recirculated water temperature before and after heat interchanger in the humidity of air and temperature, passive containment thermal conduction system before and after heat interchanger;
(6) exchange capability of heat of passive containment thermal conduction system is calculated by recording parameter.
Further, passive containment thermal conduction system test method as above, wherein, passes through to start the temperature that the electric heater be arranged in enclosure device improves damp-heat air in step (2) and step (4).
Further, passive containment thermal conduction system test method as above, wherein, when carrying out the first debugging test of passive containment thermal conduction system, after passive containment thermal conduction system is started working, should reduce in step (4) and add damp-heat air flow, in order to avoid the flowing that adds of damp-heat air becomes the power-assisted accelerating natural convection air, affect test findings.
Further, passive containment thermal conduction system test method as above, wherein, when carrying out passive containment thermal conduction system routine test or safety evaluation, after passive containment thermal conduction system is started working, in step (4), strengthen the flowing of damp-heat air within the scope of enclosing by the mode of blower fan forced convertion.
Beneficial effect of the present invention is as follows: passive containment thermal conduction system test method provided by the present invention is by containment environment after simulated accident, first unit checking requirement can be set up and meet to the non-active circulation of checking passive containment thermal conduction system automatically, and within the whole nuclear power plant phase in longevity, all can effectively derive heat in containment, meet design requirement.The present invention can provide reliable test basis for the engineer applied of passive containment thermal conduction system.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of passive containment thermal conduction system;
Fig. 2 is a kind of test principle schematic diagram of passive containment thermal conduction system;
Fig. 3 is the another kind of test principle schematic diagram of passive containment thermal conduction system.
Embodiment
Because passive containment thermal conduction system (pcs system) is passive technology, when there is whole audience power-off, when not having Operator actions, system puts into operation automatically, utilizes Natural Circulation to realize the long-term heat extraction of containment.Therefore, debugging test wants verification system to realize the long-term heat extraction of containment by the mode of Natural Circulation.
For the first debugging test of pcs system, because the availability of pcs system function need be verified, more should cool air conditions in containment by real simulation pcs system, after pcs system is started working, add damp-heat air flow and should reduce to minimum, in order to avoid the flowing that adds of damp-heat air becomes the power-assisted accelerating natural convection air, affect test effect.Need for pcs system routine test or safety evaluation, checking emphasis is heat exchanger efficiency, and need the flowing strengthening damp-heat air, the mode by blower fan forced convertion accelerates test process.Based on these requirements, the present invention is illustrated by two embodiments.
Embodiment 1
As shown in Figure 2, pilot system comprises the enclosure device 6 for airtight heat interchanger 1, is provided with electric heater 7 in enclosure device 6.The structure of this enclosure device is applicable to the first debugging test of pcs system.Test method is as follows:
(1) passive containment thermal conduction system is set up, and by enclosure device 6, by heat interchanger 1 enclosing of passive containment thermal conduction system in a relatively airtight space.
(2) above the heat interchanger of enclosure device 6, be blown into the damp-heat air of extreme environment in simulating Safety shell, and startup electric heater 7 adjusts damp-heat air temperature where necessary.In containment, under extreme environment, air characteristics is mainly and has that radioactivity, temperature are high, high humidity, but radioactivity does not affect for the heat export function of pcs system, therefore need not simulated emission environment.
(3) after being evenly full of damp-heat air in the closed environment of heat interchanger place, open the isolation valve 8 of passive containment thermal conduction system, passive containment thermal conduction system is started working.
(4) will add damp-heat air flow and reduce to minimum, and suitably regulate the temperature of damp-heat air, maintaining enclosing scope environment condition is Environment condition inside containment under passive containment thermal conduction system function.
(5) (such as 30 minutes) after passive containment thermal conduction system stable operation a period of time, measure circulating air flowing speed, discharge, recirculated water temperature (i.e. A point and B point position in Fig. 2) before and after heat interchanger in the humidity of air and temperature (i.e. C point and D point position in Fig. 2), passive containment thermal conduction system before and after heat interchanger.In the present embodiment, carry out the temperature and humidity of air before heat interchanger in C point position and measure, carry out the temperature and humidity of air after heat interchanger at D point and measure, and air-flow measurement; Carry out the temperature survey of water before heat interchanger in B point position, carry out the temperature survey of water after heat interchanger at A point, and measuring water flow.
(6) exchange capability of heat of passive containment thermal conduction system is calculated by recording parameter.
Can draw according to measured value:
Heat: q=c is derived in water side
water(Q
at
a-Q
bt
b) (kW)
Wherein:
Q
a: A point flow (calculating by flow velocity)
T
a: A point temperature
Q
b: B point flow (calculating by flow velocity)
T
b: B point temperature
C
water: specific heat of water
Air side quantity of heat given up: q '=c
water(Q
cΨ
ct
c-Q
dΨ
dt
d)+c
air(Q
c(1-Ψ
c) T
c-Q
d(1-Ψ
d) T
d) (kW)
Wherein:
Q
c: C point flow (calculating by flow velocity)
T
c: C point temperature
Q
d: D point flow (calculating by flow velocity)
T
d: D point temperature
C
water: specific heat of water
C
air: the specific heat of air
Ψ
c: C point humidity
Ψ
d: D point humidity
The difference of q and q ' should in tolerance interval, and q should be not less than design load.And whole passive containment thermal conduction system is made up of the heat interchanger that x group is such, therefore overall heat derivation ability is xq (kW).
Above computing method are the known technology of this area.
Embodiment 2
As shown in Figure 3, pilot system comprises the enclosure device 9 for airtight heat interchanger 1, is provided with electric heater 7 and blower fan 10 in enclosure device 9.The structure of this enclosure device is applicable to pcs system routine test.Test method is as follows:
(1) passive containment thermal conduction system is set up, and by enclosure device 9, by heat interchanger 1 enclosing of passive containment thermal conduction system in a relatively airtight space.
(2) above the heat interchanger of enclosure device 9, be blown into the damp-heat air of extreme environment in simulating Safety shell, and startup electric heater 7 adjusts damp-heat air temperature where necessary.In containment, under extreme environment, air characteristics is mainly and has that radioactivity, temperature are high, high humidity, but radioactivity does not affect for the heat export function of pcs system, therefore need not simulated emission environment.
(3) after being evenly full of damp-heat air in the closed environment of heat interchanger place, open the isolation valve 8 of passive containment thermal conduction system, passive containment thermal conduction system is started working.
(4) accelerated the flowing of damp-heat air by the mode of blower fan forced convertion, and suitably regulate the temperature of damp-heat air, maintaining enclosing scope environment condition is Environment condition inside containment under passive containment thermal conduction system function.
(5), after passive containment thermal conduction system stable operation a period of time, measure circulating air flowing speed, discharge, recirculated water temperature (i.e. A point and B point position in Fig. 3) before and after heat interchanger in the humidity of air and temperature (i.e. C point and D point position in Fig. 3), passive containment thermal conduction system before and after heat interchanger.In the present embodiment, carry out the temperature and humidity of air before heat interchanger in C point position and measure, carry out the temperature and humidity of air after heat interchanger at D point and measure, and air-flow measurement; Carry out the temperature survey of water before heat interchanger in B point position, carry out the temperature survey of water after heat interchanger at A point, and measuring water flow.
(6) exchange capability of heat of passive containment thermal conduction system is calculated by recording parameter.(computing method are with embodiment 1)
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if belong within the scope of the claims in the present invention and equivalent technology thereof to these amendments of the present invention and modification, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. a passive containment thermal conduction system test method, comprises the steps:
(1) passive containment thermal conduction system is set up, and by enclosure device, by the heat interchanger enclosing of passive containment thermal conduction system in a relatively airtight space;
(2) be blown into the damp-heat air of extreme environment in simulating Safety shell from the top of enclosure device, and adjust damp-heat air temperature;
(3) after being evenly full of damp-heat air in the closed environment of heat interchanger place, open the isolation valve of passive containment thermal conduction system, passive containment thermal conduction system is started working;
(4) by adjusting the temperature of the damp-heat air amount of being blown into and damp-heat air, maintaining enclosing scope environment condition is Environment condition inside containment under passive containment thermal conduction system function;
(5), after passive containment thermal conduction system stable operation a period of time, measure circulating air flowing speed, discharge, recirculated water temperature before and after heat interchanger in the humidity of air and temperature, passive containment thermal conduction system before and after heat interchanger;
(6) exchange capability of heat of passive containment thermal conduction system is calculated by recording parameter.
2. passive containment thermal conduction system test method as claimed in claim 1, is characterized in that: pass through to start the temperature that the electric heater be arranged in enclosure device improves damp-heat air in step (2) and step (4).
3. passive containment thermal conduction system test method as claimed in claim 1 or 2, it is characterized in that: when carrying out the first debugging test of passive containment thermal conduction system, after passive containment thermal conduction system is started working, should reduce in step (4) and add damp-heat air flow, in order to avoid the flowing that adds of damp-heat air becomes the power-assisted accelerating natural convection air, affect test findings.
4. passive containment thermal conduction system test method as claimed in claim 1 or 2, it is characterized in that: when carrying out passive containment thermal conduction system routine test or safety evaluation, after passive containment thermal conduction system is started working, in step (4), strengthen the flowing of damp-heat air within the scope of enclosing by the mode of blower fan forced convertion.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103440889B (en) * | 2013-09-05 | 2016-03-23 | 上海核工程研究设计院 | Non-active npp safety shell systems heat shifts out the proportion grading method of process |
| CN103456376B (en) * | 2013-09-05 | 2016-04-13 | 上海核工程研究设计院 | Non-active nuclear power plant steel containment vessel heat shifts out the proportion grading method of process |
| CN108231223B (en) * | 2016-08-02 | 2019-10-11 | 合肥通用机械研究院有限公司 | A kind of passive residual heat removal cycle performance test method |
| CN108257690B (en) * | 2016-12-29 | 2019-11-22 | 福建福清核电有限公司 | A kind of device of the passive heat-extraction system Natural Circulation drag effects of research safety shell |
| CN107403651B (en) * | 2017-06-12 | 2020-12-18 | 中国核电工程有限公司 | Containment thermal hydraulic experiment system with movable working platform |
| CN109841289A (en) * | 2017-11-29 | 2019-06-04 | 国家电投集团科学技术研究院有限公司 | Experimental rig for the passive guiding system of containment heat |
| CN112951457A (en) * | 2021-03-05 | 2021-06-11 | 哈尔滨工程大学 | PCS long-term heat exchange water tank with parallel channels |
| CN113140335B (en) * | 2021-04-02 | 2022-03-22 | 中国核电工程有限公司 | Passive containment heat exporting system with internal heat exchanger protection device |
| CN113704959B (en) * | 2021-07-12 | 2024-04-09 | 中国核电工程有限公司 | Simulation method and system for heat exchanger type passive containment cooling system |
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| CN101719386A (en) * | 2009-12-21 | 2010-06-02 | 肖宏才 | Entire passive shutdown safe cooling device of advanced pressurized water reactor nuclear power plant and operation program thereof |
| CN102522127A (en) * | 2011-12-23 | 2012-06-27 | 中国核电工程有限公司 | Passive containment thermal conduction system |
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| KR100419318B1 (en) * | 2000-12-07 | 2004-02-19 | 한국전력공사 | Decay heat removal apparatus using the thermosyphon in the liquid metal reactor |
| KR100935089B1 (en) * | 2007-12-20 | 2010-01-06 | 한국원자력연구원 | Passive safety-grade decay heat removal system from a sodium freezing issue at the intermediate heat removal sodium loop |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719386A (en) * | 2009-12-21 | 2010-06-02 | 肖宏才 | Entire passive shutdown safe cooling device of advanced pressurized water reactor nuclear power plant and operation program thereof |
| CN102522127A (en) * | 2011-12-23 | 2012-06-27 | 中国核电工程有限公司 | Passive containment thermal conduction system |
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