CN107665742B - It is active to meet an urgent need residual heat removal system with the passive naval reactor that combines - Google Patents
It is active to meet an urgent need residual heat removal system with the passive naval reactor that combines Download PDFInfo
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- CN107665742B CN107665742B CN201710719215.2A CN201710719215A CN107665742B CN 107665742 B CN107665742 B CN 107665742B CN 201710719215 A CN201710719215 A CN 201710719215A CN 107665742 B CN107665742 B CN 107665742B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down 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 present invention relates to a kind of active with the passive naval reactor emergency residual heat removal system combined, including once through steam generator, the first residual heat removal system, the second residual heat removal system and input pipe, efferent duct.Once through steam generator is arranged in containment, and the first residual heat removal system, the second residual heat removal system are arranged outside containment.When first residual heat removal system works, after the gaseous coolant of first outlet outflow enters the condensation of the first condensing unit, it flows into condensation collecting box through second outlet to be collected, the coolant condensed in collecting box is transported in once through steam generator by water plug by first entrance；When second residual heat removal system works, after the gaseous coolant of first outlet outflow enters the condensation of the second condensing unit, it is transported in once through steam generator by gravity through first entrance.In conjunction with the respective advantage of two kinds of heat extraction modes, it is applicable in that accident range is wide, and thermal discharge efficiency is high, while improving system reliability and power plant safety.
Description
Technical field
The present invention relates to naval reactor engineered safety system, more specifically to a kind of active with passive phase knot
The naval reactor emergency residual heat removal system of conjunction.
Background technique
The main purpose of naval reactor security system is to ensure that after generation accident, guarantee reactor sudden closure,
The discharge of residual heat of nuclear core and containment it is complete, to limit the development of accident and to mitigate the consequence of accident.Wherein accident conditions
Lower reactor waste discharge problem is particularly important, it is directly related to reactor safety, and processing is bad to will lead to primary Ioops cooling
The thawing of agent boiling even reactor core, therefore the design of emergency reactor waste heat heat-extraction system is always the crucial skill of reactor design
One of art.
Naval reactor has significantly different compared with land reactor, such as space is limited on ship, it is desirable that reactor and its
Systems attempt miniaturization；For marine ships far from land, fresh water is limited, it is difficult to supplement；It is steamed compared to land commonly used U-tube
Vapour generator, marine vapor generator is based on once through steam generator, with small in size, high-efficient and small water capacity spy
Point etc..
Domestic naval reactor is mainly military use at present, not yet civilian, Residual heat removal technology relative closure of meeting an urgent need.
Land emergency reactor residual heat removal system mainly has two generation reactors and the use of the active emergency Residual heat removal technology of use
Three generations's reactor of passive emergency Residual heat removal technology.
Two generations active emergency residual heat removal system, by taking typical M310 type reactor as an example, Residual heat removal function of meeting an urgent need
It can realize that system is mainly by auxiliary feed-water tank, auxiliary feed water pump and corresponding pipe valve using active auxiliary feedwater system
Composition.It is exchanged heat by the way that the cooling water pump in auxiliary feed-water tank is sent into U-tube steam generator secondary side, and by generation
Steam is discharged into ultimate heat sink-atmosphere, forms open circulation, achievees the purpose that take away reactor waste.Active emergency waste heat row
System features are thermal discharge efficiency height out, but when the beyond design basis accidents such as whole audience power-off occur, system is unable to run, more than emergency
Hot discharge function will be lost.Therefore, the accident conditions of active emergency residual heat removal system reply are limited, and there are security risks.
Three generations's nuclear power station has higher inherent safety because passive technology is used.With the passive of AP1000
For residual heat removal system, system material-changing water tank and corresponding pipe as built in passive residual heat removal heat exchanger, containment
Road valve composition.It is arranged in containment, using primary Ioops passive residual heat removal scheme, utilizes the close of primary Ioops coolant
Degree difference generates driving force, forms closed cycle, reactor waste is reached the cooling water in ultimate heat sink-material-changing water tank.Non- energy
Dynamic system simplifies system design due to the features such as eliminating active component, not depending on external power supply, and improves system
Reliability improves power plant safety.But that there is also heat transfer efficiencys is lower for passive system, insufficient in fortune nuclear power station operating experience
The problems such as.
In addition, there are also a kind of active with the passive secondary side core heat lead-out device combined, by active auxiliary
Water supply system and Passive residual heat removal system combine, and reactor waste can be executed under different accident conditions and led
Function out.The program has played active and passive system respectively advantage, but the program is more suitable for land nuclear reactor, if answered
It is difficult to overcome there are still following problems for marinereactor:
1, naval reactor hull space is limited, and large water tank can not be arranged, if using active auxiliary feedwater system
Waste heat is discharged, needs to be arranged the biggish auxiliary feed-water tank of volume；
2, marine fresh water resource is limited, the more land difficulty of water process, if using more than active auxiliary feedwater system discharge
A large amount of discharge of steam generated by steam generator to atmosphere need to be formed open circulation, this causes the fresh water on ship by heat
Waste.
Naval reactor is since own characteristic tends to select small in size, high-efficient once through steam generator, due to straight
It flows steam generator secondary side capacity very little (compared with U-tube steam generator), if using active auxiliary feedwater system
Waste heat is discharged, once through steam generator need to be easy to cause secondary by the discharge of steam largely generated by steam generator to atmosphere
Side " flash distillation ", it is possible to make heat transfer deterioration, cause more serious accident.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of active with the passive naval reactor emergency combined
Residual heat removal system.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of active with the passive ship combined
With emergency reactor residual heat removal system, including once through steam generator, the first residual heat removal system, the second residual heat removal system
And input pipe, efferent duct；
The once through steam generator is arranged in containment, and the once through steam generator is equipped with first entrance and the
One outlet；
The input pipe is connect with the first entrance, and the efferent duct is connect with the first outlet, and described more than first
Hot discharge system, the second residual heat removal system are arranged outside the containment；
First residual heat removal system includes sequentially connected first condensing unit, condensation collecting box, water plug, institute
Stating the first condensing unit includes second entrance and second outlet, and the condensation collecting box includes third entrance and third outlet, institute
Second entrance is stated to connect with the efferent duct, the second outlet is connect with the third entrance, the water plug respectively with
The third outlet is connected with input pipe；
Second residual heat removal system includes the second condensing unit for condensing to gaseous coolant, and described second is cold
Solidifying device is connect with the input pipe and efferent duct respectively；
When first residual heat removal system works, the gaseous coolant flowed out through the first outlet enters described first
After condensing unit condensation, the condensation collecting box is flowed into through the second outlet and is collected, the water plug will be described cold
Coolant in solidifying collecting box is transported in the once through steam generator by the first entrance；
When second residual heat removal system works, the gaseous coolant flowed out through the first outlet enters described second
After condensing unit condensation, it is transported in the once through steam generator by gravity through the first entrance.
Preferably, first condensing unit includes the first condenser, and first condenser includes shell and described
The condenser pipe being arranged in shell, the condenser pipe are connect with component cooling water, and the second entrance, second outlet are arranged described
On shell.
Preferably, the first control valve of control pipe switch is equipped between the second entrance and the efferent duct.
Preferably, liquid coolant is stored in the condensation collecting box, and liquid level is not less than the first entrance.
Preferably, the first entrance is located at the lower end of the once through steam generator, and the first outlet is located at described
The upper end of once through steam generator, the liquid level of the coolant in the condensation collecting box is in the first entrance and described the
Between one outlet；Or, the first entrance, first outlet are respectively positioned on the upper end of the once through steam generator.
Preferably, the water plug includes drawing water unit, and the unit that draws water includes the suction pump being arranged in series and the
One reverse valve, the first reverse valve are connect with the exit end of the suction pump.
Preferably, the water plug includes at least two units that draw water being arranged in parallel.
Preferably, the second control of control pipe switch is equipped between the downstream of the water plug and the input pipe
Valve.
Preferably, the second reverse valve is equipped between second control valve and the input pipe.
Preferably, second condensing unit includes being stored with the cooling cylinder of coolant and being arranged in the cooling cylinder
The second condenser；
Second condenser includes condensation chamber and the 4th entrance being connected to the condensation chamber, the 4th outlet, and described the
Four entrances are connect by the efferent duct with the first outlet, and the 4th outlet is entered by the input pipe with described first
Mouth connection, condenses, and be flowed into the once through steam generator after entering the condenser for gaseous coolant.
Preferably, second residual heat removal system further includes the moisturizing list being arranged in parallel with second condensing unit
Member, the moisturizing unit include the water supply tank for being stored with coolant, and the water supply tank is equipped with the 5th entrance and the 5th outlet；
5th entrance is connect by the efferent duct with the first outlet, and the 5th outlet is located at the moisturizing
The liquid level of case by the input pipe with the first entrance hereinafter, and connect.
Preferably, the moisturizing unit further includes in the downstream setting of the 5th outlet, to control from the water supply tank
The current-limiting apparatus of the flow of the coolant of outflow.
Preferably, the current-limiting apparatus includes current limiting plate, and the current limiting plate is equipped at least one metering hole, the current limliting
Total circulation area in hole is less than the endoporus area of the 5th outlet.
Preferably, the moisturizing unit further include the setting of the downstream of the current-limiting apparatus, with control pipe switch the
Three control valves.
Preferably, the downstream of second condensing unit and the moisturizing unit is equipped with the 4th control of control pipe switch
Valve conveys coolant to control second condensing unit and the moisturizing unit to the first entrance；
The upstream of second condensing unit and the moisturizing unit controls the efferent duct and second condensing unit
5th control valve of the pipe switch between the moisturizing unit.
Preferably, the downstream of the 4th control valve and between the input pipe be equipped with the reverse valve of third.
Implement it is of the invention it is active meet an urgent need residual heat removal system with the passive naval reactor combined, having following has
Beneficial effect: using active with the passive emergency reactor residual heat removal system combined, using passive as active spare,
In conjunction with the respective advantage of two kinds of heat extraction modes, it is applicable in that accident range is wide, and thermal discharge efficiency is high, while improving system reliability and power plant
Safety reduces extensive radioactivity release probability；
Reactor waste is discharged using closed cycle in the present invention, is not provided with auxiliary feed-water tank, saves arrangement space, is applicable in
Marine naval reactor is conducive to the development of marine nuclear facilities；Without to idle discharge steam, it can prevent once through steam generator from dodging
It steams.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is active with the passive naval reactor emergency residual heat removal system combined in the embodiment of the present invention
Principle schematic diagram.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, active with the passive naval reactor emergency combined in a preferred embodiment of the invention
Residual heat removal system includes once through steam generator 1, the first residual heat removal system 2, the second residual heat removal system 3 and input pipe
4, efferent duct 5.
Once through steam generator 1 is arranged in containment 6, and once through steam generator 1 is equipped with first entrance 11 and first
Outlet 12.Input pipe 4 is connect with first entrance 11, and efferent duct 5 is connect with first outlet 12, the first residual heat removal system 2, second
Residual heat removal system 3 is arranged outside containment 6, avoids occupying the space in containment 6, saves arrangement space, is applicable in sea
Naval reactor.
First residual heat removal system 2 includes sequentially connected first condensing unit 21, condensation collecting box 22, water plug
23, the first condensing unit 21 includes second entrance 211 and second outlet 212, and condensation collecting box 22 includes third entrance 221 and the
Three outlets 222, second entrance 211 is connect with efferent duct 5, and second outlet 212 is connect with third entrance 221, and water plug 23 divides
It is not connect with third outlet 222 and input pipe 4；
Second residual heat removal system 3 includes the second condensing unit 31 for condensing to gaseous coolant, the second condensation dress
31 are set to connect with input pipe 4 and efferent duct 5 respectively.Coolant is usually water, is cooled down to equipment.
First residual heat removal system 2, the second residual heat removal system 3 put into operation when being typically different, and the first residual heat removal system 2 is
Active emergency Residual heat removal subsystem, the second residual heat removal system 3 are passive emergency Residual heat removal subsystem.It is reacting
Heap is lost under the accident conditions of normal heat extraction path, and preferentially put into operation the first residual heat removal system 2；When 2 nothing of the first residual heat removal system
Method puts into operation, then put into operation the second residual heat removal system of secondary side 3.
Reactor is lost under the accident conditions of normal heat extraction path, reactor emergency shut-down, the work of the first residual heat removal system 2
When, after the gaseous coolant flowed out through first outlet 12 is in a liquid state into the condensation of the first condensing unit 21, flowed through second outlet 212
Enter to condense collecting box 22 to be collected, the coolant condensed in collecting box 22 is transported to directly by water plug 23 by first entrance 11
It flows in steam generator 1.
1 pipe side water of once through steam generator is heated by reactor waste generates steam, and steam enters first by efferent duct 5
21 shell-side of condensing unit is water in 21 shell-side condensation of the first condensing unit.Steam heat passes to 21 pipe side of the first condensing unit
The cooling water that component cooling water system provides.Condensed water, toward the condensation collecting box 22 in downstream, forms closed cycle by gravity stream, will
Reactor waste brings the component cooling water in the first condensing unit of ultimate heat sink -21.The driving force entirely recycled is by active
Water plug 23 provides, and water plug 23 guarantees normal power supply equipped with emergency power supply.
When full factory's power loss occurring or other lead to the first 2 not available accident of residual heat removal system, the second Residual heat removal
System 3 works, and after the gaseous coolant flowed out through first outlet 12 enters the condensation of the second condensing unit 31, enters by gravity through first
Mouth 11 is transported in once through steam generator 1.
The upstream for the node that input pipe 4 is connect with the first residual heat removal system 2, the second residual heat removal system 3 is equipped with the 6th
Control valve 41；The downstream for the node that efferent duct 5 is connect with the first residual heat removal system 2, the second residual heat removal system 3 is equipped with the 7th
Control valve 51.It is active when the passive naval reactor combined meets an urgent need residual heat removal system starting, it can be first by the 6th
Control valve 41 and the 7th control valve 51 are closed, and the down-stream system of input pipe 4, efferent duct 5 is allowed to be isolated, and meet emergency Residual heat removal
System access condition.
First condensing unit 21 includes the first condenser, and the first condenser includes shell 213 and is arranged in shell 213
Condenser pipe 214, condenser pipe 214 are connect with component cooling water.Second entrance 211, second outlet 212 are arranged on shell 213, allow
Gaseous coolant enters in shell 213, and component cooling water system is that condenser pipe 214 provides cooling water, will enter shell 213
Gaseous coolant is cooled to liquid.
It is equipped with the first control valve 215 of control pipe switch between second entrance 211 and efferent duct 5, can be used for controlling gas
Whether state coolant is flowed into the first condensing unit 21, when needing to carry out heat extraction with the first residual heat removal system 2, opens first
Control valve 215.
After the gaseous coolant in once through steam generator 1 is flowed out to the first condensing unit 21, in order to timely to straight
1 moisturizing of steam generator is flowed, the pipe side water for avoiding result in once through steam generator 1 is partly or entirely lost, and collecting box is condensed
Liquid coolant is stored in 22, and liquid level is not less than first entrance 11, occur for system initial operation stage to direct-flow steam
1 pipe side moisturizing of device.Meanwhile the coolant condensed in collecting box 22 is not filled, and inner cavity is allowed to be set as gas-liquid two-phase, anti-locking system is thrown
Fortune initial stage unstable stage system superpressure.
In some embodiments, first entrance 11, first outlet 12 are respectively positioned on the upper end of once through steam generator 1, carry out
Top water inlet, top go out steam.The lower end of once through steam generator 1 can also be located at for first entrance 11, first outlet 12 is located at
The upper end of once through steam generator 1, at this time, it is preferable that the liquid level of the coolant in condensation collecting box 22 is in first entrance
Between 11 and first outlet 12.It such as can control flow, the liquid level for condensing the coolant in collecting box 22 can also be higher than first
Outlet 12.
In some embodiments, water plug 23 includes the unit 231 that draws water, and the unit 231 that draws water includes the pumping being arranged in series
Water pump 2311 and the first reverse valve 2312, the first reverse valve 2312 are connect with the exit end of suction pump 2311.First reverse valve
2312 allow the coolant in once through steam generator 1 reversely not flow to suction pump 2311, ensure that one-way flow.
Preferably, water plug 23 includes two units 231 that draw water being arranged in parallel, the using and the reserved when operation, further
Ground is furnished with emergency power supply, continues to use in the event of a power failure.In other embodiments, water plug 23 may also comprise multiple
The unit 231 that draws water being arranged in parallel.The unit 231 that draws water can also only include suction pump 2311, and the first reverse setting of valve 2312 is existed
The downstream of water plug 23.
Further, the second control valve 24 of control pipe switch is equipped between the downstream of water plug 23 and input pipe 4,
When the first residual heat removal system 2 is closed, the first control valve 215, the second control valve 24 are simultaneously closed off, in the first Residual heat removal system
When 2 starting of system, the first control valve 215, the second control valve 24 are opened simultaneously.
It is equipped with the second reverse valve 25 between second control valve 24 and input pipe 4, allows coolant in once through steam generator 1
The second control valve 24, water plug 23 will not be reversely flowed to, ensure that one-way flow, the first reverse valve 2312, the second reverse valve
25 can also only be arranged one of position.
In some embodiments, the second condensing unit 31 includes being stored with the cooling cylinder 311 of coolant and being arranged cold
The second condenser 312 in solidifying case 311, the second condenser 312 include condensation chamber and the 4th entrance 3121 being connected to condensation chamber,
4th outlet 3122.4th entrance 3121 is connect by efferent duct 5 with first outlet 12, and the 4th outlet 3122 passes through input pipe 4
It connect with first entrance 11, is condensed after entering condenser for gaseous coolant, and be flowed into once through steam generator 1.Cooling cylinder
311 it is settable in the seawater, the heat transfer of absorption is gone out to radiate.
Further, the second residual heat removal system 3 further includes the moisturizing unit 32 being arranged in parallel with the second condensing unit 31,
Moisturizing unit 32 includes the water supply tank for being stored with coolant, and water supply tank is equipped with the 5th entrance 321 and the 5th outlet 322.5th
Entrance 321 is connect by efferent duct 5 with first outlet 12, and the 5th outlet 322 is located at the liquid level of water supply tank hereinafter, and passing through input
Pipe 4 is connect with first entrance 11.
It, can be there are two the stage: to 1 moisturizing stage of once through steam generator and waste heat after the starting of second residual heat removal system 3
The discharge stage.
In the 1 moisturizing stage of once through steam generator, water in case is injected direct current through first entrance 11 by gravity by water supply tank
1 pipe side of steam generator is 1 pipe side moisturizing of once through steam generator.
Further, moisturizing unit 32 further includes flowing out in the downstream setting of the 5th outlet 322, with control from water supply tank
The current-limiting apparatus 33 of the flow of coolant.Current-limiting apparatus 33 plays metering function, reduces moisturizing to caused by once through steam generator 1
Thermal shock.
Preferably, current-limiting apparatus 33 includes current limiting plate, and current limiting plate is equipped at least one metering hole, total stream of metering hole
Endoporus area of the logical area less than the 5th outlet 322.Current limiting plate can limit the refill flow of once through steam generator 1,
Reduce moisturizing and thermal shock is caused to once through steam generator 1 in system start-up phase.Current-limiting apparatus 33 can also be regulating valve etc., root
Flow is controlled according to actual conditions.
Moisturizing unit 32 further include current-limiting apparatus 33 downstream setting, the third control valve 34 to control pipe switch,
Play isolation water supply tank, when 1 water level of once through steam generator is excessively high, close third control valve 34, stop water filling, prevents straight
Flow the generation that spill-over influence steam occurs for 1 pipe side of steam generator.Water supply tank is set as gas-liquid two-phase, anti-locking system initial operation stage
Unstable stage superpressure.
In the Residual heat removal stage, reactor waste heats the heated generation steam of 1 pipe side water of once through steam generator, and steam is logical
It crosses efferent duct 5 and enters the second condensing unit 31, be condensed into water in the condensation chamber of the second condenser 312.Steam heat passes to
Cooling water in 6 condensed exterior case 311 of containment.Condensed water in condensation chamber is sent to direct-flow steam hair by input pipe 4 by gravity
Raw device 1, forms closed cycle, brings reactor waste to the cooling water in 6 condensed exterior case 311 of ultimate heat sink-containment.It is whole
A circulation is passive natural circulation, and the density contrast and 6 condensed exterior case 311 of containment and direct current for relying primarily on steam and water steam
The potential difference of vapour generator 1 provides driving force.
The downstream of second condensing unit 31 and moisturizing unit 32 is equipped with the 4th control valve 35 of control pipe switch, with control
Second condensing unit 31 and moisturizing unit 32 convey coolant to first entrance 11.
The upstream of second condensing unit 31 and moisturizing unit 32 controls efferent duct 5 and the second condensing unit 31 and moisturizing unit
5th control valve 36 of the pipe switch between 32.When the second residual heat removal system 3 is closed, the control of the 4th control valve the 35, the 5th
Valve 36 processed simultaneously closes off, and in the starting of the first residual heat removal system 2, the 4th control valve 35, the 5th control valve 36 are opened simultaneously.
Further, the downstream of the 4th control valve 35 and between input pipe 4 be equipped with the reverse valve 37 of third, prevent direct current from steaming
Coolant in vapour generator 1 reversely flows to the second residual heat removal system 3.
The invention has the following advantages that
The present invention meets the needs of reactor loses Residual heat removal under the emergency conditions of normal heat extraction path；
The present invention is using the active naval reactor emergency residual heat removal system combined with passive, in conjunction with two kinds of heat extractions
The respective advantage of mode, is applicable in that accident range is wide, and thermal discharge efficiency is high, while improving system reliability and nuclear reactor safety, drops
Low extensive radioactivity release probability；
Reactor waste is discharged using closed cycle in the present invention, is not provided with auxiliary feed-water tank, and system design simplifies, saves and throw
Cost is provided, arrangement space is saved, sea naval reactor is applicable in, is conducive to the development of marine nuclear facilities；
Reactor waste is discharged using closed cycle, without to idle discharge steam, can prevent once through steam generator 1 from dodging
It steams, avoids steam generator heat transfer deterioration, while avoiding the waste of freshwater resources on ship；
The passive emergency Residual heat removal subsystem setting restriction orifice of the present invention reduces moisturizing to once through steam generator 1
Thermal shock reduces equipment damage probability, improves equipment availability；
Redundancy electrodynamic pump is arranged in the active emergency Residual heat removal subsystem of the present invention, prevents from failing.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (16)
1. a kind of active with the passive naval reactor emergency residual heat removal system combined, which is characterized in that including direct current
Steam generator (1), the first residual heat removal system (2), the second residual heat removal system (3) and input pipe (4), efferent duct (5)；
In containment (6), the once through steam generator (1) is equipped with first and enters for once through steam generator (1) setting
Mouth (11) and first outlet (12)；
The input pipe (4) connect with the first entrance (11), and the efferent duct (5) connect with the first outlet (12),
First residual heat removal system (2), the second residual heat removal system (3) setting the containment (6) outside；
First residual heat removal system (2) includes sequentially connected first condensing unit (21), condensation collecting box (22), draws water
Device (23), first condensing unit (21) include second entrance (211) and second outlet (212), the condensation collecting box
It (22) include third entrance (221) and third outlet (222), the second entrance (211) connect with the efferent duct (5), institute
It states second outlet (212) to connect with the third entrance (221), the water plug (23) exports with the third respectively
(222) it is connected with input pipe (4)；
Second residual heat removal system (3) includes the second condensing unit (31) for condensing to gaseous coolant, and described
Two condensing units (31) are connect with the input pipe (4) and efferent duct (5) respectively；
When first residual heat removal system (2) works, described in the gaseous coolant entrance through the first outlet (12) outflow
After first condensing unit (21) condensation, the condensation collecting box (22) is flowed into through the second outlet (212) and is collected, it is described
Coolant in condensation collecting box (22) is transported to the direct current by the first entrance (11) and steamed by water plug (23)
In vapour generator (1)；
When second residual heat removal system (3) works, described in the gaseous coolant entrance through the first outlet (12) outflow
After second condensing unit (31) condensation, it is transported in the once through steam generator (1) by gravity through the first entrance (11)；
Wherein, in the case where the heap that reacts loses normal heat extraction path accident conditions, first residual heat removal system (2) opens work
Make；When first residual heat removal system (2) can not work normally, then second residual heat removal system (3) opens work.
2. it is according to claim 1 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is, first condensing unit (21) includes the first condenser, and first condenser includes shell (213) and described
The condenser pipe (214) being arranged in shell (213), the condenser pipe (214) connect with component cooling water, the second entrance
(211), second outlet (212) is arranged on the shell (213).
3. it is according to claim 1 or 2 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the first control valve of control pipe switch is equipped between the second entrance (211) and the efferent duct (5)
(215)。
4. it is according to claim 1 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is, liquid coolant is stored in the condensation collecting box (22), and liquid level is not less than the first entrance (11).
5. it is according to claim 1 or 4 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the first entrance (11) is located at the lower end of the once through steam generator (1), and the first outlet (12) is located at
The upper end of the once through steam generator (1), the liquid level for condensing the coolant in collecting box (22) is described first
Between entrance (11) and the first outlet (12)；Or, the first entrance (11), first outlet (12) are respectively positioned on the direct current
The upper end of steam generator (1).
6. it is according to claim 1 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is, the water plug (23) includes drawing water unit (231), and the unit that draws water (231) includes drawing water of being arranged in series
Pump (2311) and the first reverse valve (2312), the exit end company of the first reverse valve (2312) and the suction pump (2311)
It connects.
7. it is according to claim 6 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is that the water plug (23) includes at least two units that draw water (231) being arranged in parallel.
8. according to claim 1,6,7 is described in any item active with the passive naval reactor emergency Residual heat removal combined
System, which is characterized in that the of control pipe switch is equipped between the downstream and the input pipe (4) of the water plug (23)
Two control valves (24).
9. it is according to claim 8 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is, the second reverse valve (25) is equipped between second control valve (24) and the input pipe (4).
10. it is according to claim 1 active with the passive naval reactor emergency residual heat removal system combined, it is special
Sign is that second condensing unit (31) includes being stored with the cooling cylinder (311) of coolant and being arranged in the cooling cylinder
(311) the second condenser (312) in；
Second condenser (312) includes condensation chamber and the 4th entrance (3121) being connected to the condensation chamber, the 4th outlet
(3122), the 4th entrance (3121) is connect by the efferent duct (5) with the first outlet (12), the 4th outlet
(3122) connect by the input pipe (4) with the first entrance (11), for gaseous coolant enter the condenser after it is cold
It is solidifying, and it is flowed into the once through steam generator (1).
11. active according to claim 1 or described in 10 meet an urgent need residual heat removal system with the passive naval reactor combined,
It is characterized in that, second residual heat removal system (3) further includes the moisturizing being arranged in parallel with second condensing unit (31)
Unit (32), the moisturizing unit (32) include the water supply tank for being stored with coolant, and the water supply tank is equipped with the 5th entrance
(321) and the 5th exports (322)；
5th entrance (321) is connect by the efferent duct (5) with the first outlet (12), the 5th outlet
(322) positioned at the liquid level of the water supply tank hereinafter, and being connect by the input pipe (4) with the first entrance (11).
12. it is according to claim 11 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the moisturizing unit (32) further includes in the downstream setting of the 5th outlet (322), to control from the moisturizing
The current-limiting apparatus (33) of the flow of the coolant of case outflow.
13. it is according to claim 12 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the current-limiting apparatus (33) includes current limiting plate, and the current limiting plate is equipped at least one metering hole, the metering hole
Total circulation area be less than it is described 5th outlet (322) endoporus area.
14. it is according to claim 12 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the moisturizing unit (32) further includes in the setting of the downstream of the current-limiting apparatus (33), to control pipe switch
Third control valve (34).
15. it is according to claim 11 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
It is characterized in that, the downstream of second condensing unit (31) and the moisturizing unit (32) is equipped with the 4th control of control pipe switch
Valve (35) processed, it is cold to control second condensing unit (31) and the moisturizing unit (32) Xiang Suoshu first entrance (11) conveying
But agent；
The upstream of second condensing unit (31) and the moisturizing unit (32) controls the efferent duct (5) and described second cold
5th control valve (36) of the pipe switch between solidifying device (31) and the moisturizing unit (32).
16. it is according to claim 15 it is active meet an urgent need residual heat removal system with the passive naval reactor that combines,
Be characterized in that, the downstream of the 4th control valve (35) and between the input pipe (4) be equipped with the reverse valve of third (37).
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| CN108447570B (en) * | 2018-05-15 | 2023-12-26 | 中广核研究院有限公司 | Marine reactor and secondary side passive waste heat discharging system thereof |
| CN109686462A (en) * | 2018-12-04 | 2019-04-26 | 中广核研究院有限公司 | Reactor RHR system and method based on once through steam generator |
| CN109698035A (en) * | 2018-12-05 | 2019-04-30 | 中广核研究院有限公司 | A kind of primary Ioops coolant fill-drain syctem |
| CN112382420B (en) * | 2020-11-19 | 2022-02-11 | 中国核动力研究设计院 | Passive residual heat removal system based on water cooler |
| CN115274150B (en) * | 2022-08-05 | 2024-05-07 | 中国核动力研究设计院 | Two-loop waste heat discharging system and method based on concentrated seawater cooling |
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