CN103456375B - With the secondary side residual heat removal system of non-active volume control device - Google Patents
With the secondary side residual heat removal system of non-active volume control device Download PDFInfo
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- CN103456375B CN103456375B CN201310328513.0A CN201310328513A CN103456375B CN 103456375 B CN103456375 B CN 103456375B CN 201310328513 A CN201310328513 A CN 201310328513A CN 103456375 B CN103456375 B CN 103456375B
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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 kind of secondary side residual heat removal system with non-active volume control device, be connected between the main steam pipe and condensing reflux pipeline of steam generator, comprise for the cooling water tank of splendid attire cooling water, be arranged in cooling water tank and be positioned at condenser and volume control device, the first arm and second arm of condensing reflux pipeline top; The pipe side entrance of condenser is connected with main steam pipe by inlet pipeline, volume control device has the first import, the second import and flow-control outlet, condenser has the first pipe side outlet and the second pipe side outlet, the first arm is communicated with the first pipe side outlet and the first import respectively, the second arm is communicated with the second pipe side outlet and the second import respectively, flow-control outlet is communicated with condensing reflux pipeline by outlet conduit, and outlet conduit is provided with normally closed isolating valve. This system prevents that core temperature is too high, reduces the pressure oscillations in system pipeline, thus the stability of raising system operation.
Description
Technical field
The present invention relates to a kind of secondary side residual heat removal system of nuclear power station, relate in particular to one and there is flow controlThe secondary side residual heat removal system of function processed.
Background technology
Along with the non-renewable energy resources such as coal, oil are day by day exhausted, more and more urgent to the demand of alternative energy source.The regenerative resource environmental protection low-carbon (LC)s such as wind energy, water energy and solar energy, but development cost is large, return rate is low, far notCan reach human wants.
Nuclear energy deposit is abundant, has fewer environmental impacts, and be more satisfactory alternative energy source. As far back as nineteen fifty-one U.S.State just starts to utilize nuclear energy to generate electricity, so far the developing history of existing more than 60 year. China mainland is thrown at present12 of fortune nuclear power generating sets, installed capacity is approximately 1,016 ten thousand KW altogether.
When nuclear power generating sets are normally worked, low-carbon economy, environmental protection. But when meeting accident situation in nuclear facilitiesAnd while causing radioactive substance to leak, consequence is hardly imaginable. From former Soviet Union's Chernobyl nuclear accident in 1986To Fukushima, Japan nuclear power plant accident in 2011, all cause immeasurable loss and global fear, timeStill allow the look that people talks become to today. How can develop safe nuclear energy technology, to improve the safety of nuclear power generating setsProperty, be the important problem in nuclear power field one.
To use more presurized water reactor as example in existing nuclear power station, its operation principle is: nuclear fuel is in reactionIn heap, there is fission and produce a large amount of heat energy, the primary side water under high pressure conditions is warming up to 300 DEG C of left and right; OneInferior side water is delivered to heat in the secondary side water in steam generator through primary side loop, and secondary side water is heatedBe gasificated into steam, Steam Actuation steam turbine drives and enters condenser condenses after generator rotary electrification and become liquidSecondary side condensed water, enters in steam generator again. Application number is China's practicality of 201120001424.1New patent discloses a kind of emergency feedwater supply system for nuclear power station. As shown in Figure 1: this emergency feedwater systemTurnkey is drawn together the uncovered cooling water tank 21 being arranged on outside nuclear power plant containment shell and is arranged on the condenser in cooling water tank22, the pipe side entrance of condenser 22 is connected with main steam pipe 17, and the pipe side outlet of condenser 22 is given with mainWater pipeline 18 connects, and in the time meeting accident accident, opens the normally closed isolating valve 24 on outlet conduit, startsThereby emergency feedwater supply system is derived primary side loop reactor core heat with the heat of Accelerating Removal secondary side water.
Application number is that 201120001424.1 the disclosed emergency feedwater supply system of Chinese utility model patent has improvedThe security of system, when Shortcomings still: the steam in main steam pipe 17 enters condenser 22 quench condensationsKnot, can cause the unstable and pressure oscillations of system flow, on the one hand, causes system to be difficult to reach fast stableState and and then derive effectively, constantly the heat of primary side water, core temperature is too high and cause danger; SeparatelyThere is destroying infection to system pipeline and equipment in the stress that on the one hand, violent pressure oscillations produces.
Summary of the invention
The object of this invention is to provide a kind of secondary side residual heat removal system with flow control function, pass throughRegulate the reflux rate of condensed water, improve the stability of system, thereby continue, effectively derive secondary side waterHeat.
There is object on realizing, the invention discloses a kind of secondary side with non-active volume control deviceResidual heat removal system, is connected between the main steam pipe and condensing reflux pipeline of steam generator described bandThere is the secondary side residual heat removal system of non-active volume control device to comprise the cooling water for splendid attire cooling waterCase, be arranged in described cooling water tank and be positioned at the condenser of described condensing reflux pipeline top; Described condensationThe pipe side entrance of device is connected with described main steam pipe by inlet pipeline, with non-active flow-control dressThe secondary side residual heat removal system of putting also comprises volume control device, the first arm and the second arm, described streamAmount control device has the first import, the second import and flow-control outlet, and described condenser has the first pipeSide outlet and the second pipe side outlet, described the first arm connects with described the first pipe side outlet and the first import respectivelyLogical, described the second arm is communicated with described the second pipe side outlet and the second import respectively, and described flow-control goes outMouth is communicated with described condensing reflux pipeline by outlet conduit, and described outlet conduit is provided with normally closed isolating valve.
The secondary side residual heat removal system of described non-active volume control device is at condenser and condensing reflux pipelineBetween access non-active volume control device, between non-active volume control device and condenser by firstPipe and the second arm are connected, and are entered the condensation of non-active volume control device by the first arm through the first importCurrent are entering non-energy with the condensation flow that is entered non-active volume control device by the second arm through the second importAfter moving volume control device, relatively flow and mix, thereby slowed down the flow velocity of condensed water, it is steady that quickening system reachesDetermine state and then derive effectively, constantly the heat of primary side water, prevent that core temperature is too high, reduce simultaneouslyPressure oscillations in system pipeline, thereby the stability of raising system operation; Condenser is positioned at non-active flow controlDevice processed top, volume control device are positioned at condensing reflux pipeline top, and each several part height differently arranges,Make condensed water without external impetus, only to rely on condensed water self gravitation be feasible system operation, safety is steadyFixed and reliability is high.
Preferably, described volume control device has the rounded flow-control chamber of a cross section; Flow-controlChamber is rounded, and the resistance that relatively flows and mix therein to reduce two bursts of condensation flow, makes mixedCondensed water is inner in flow-control chamber to flow in order, increases the difficulty of condensation flow outflow control chamber.
Particularly, described flow-control outlet is opened in the bottom in described flow-control chamber, described the first importAnd second import be opened in the sidewall in described flow-control chamber; Flow-control outlet is opened in flow-control chamberBottom, makes condensed water in flow-control chamber rely on self gravitation all to flow out volume control device and entersEnter condensing reflux pipeline, and without by external impetus.
Particularly, described flow-control outlet is opened in the circle centre position of bottom, described flow-control chamber, and described theThe direction of the traffic of one import is just to described circle centre position, and the direction of the traffic of described the second import is not just to the described center of circlePlace; In the time that condensed water only flows into flow-control chamber from the first import, the condensed water that flows into flow-control chamber continuesFlow and flow to flow-control outlet, facilitate condensed water to flow out; When condensed water is simultaneously from the first import and secondImport flows into when flow-control chamber, and two strands of condensed waters convection current of meeting increases condensation flow outflow control chamberDifficulty.
Particularly, the angle of the direction of the traffic of the direction of the traffic of described the second import and described the first import is 90Degree, and angle between the radius at described the first import place and the radius at described the second import place is acute angle;Export in condensation flow to the flow-control that flows into flow-control chamber from the first import, flow into stream from the second importThe condensed water of amount control chamber mixes its vertical impact, makes mixed condensed water in flow-control chamberThere is vortex, further increase the difficulty of condensation flow outflow control chamber.
Particularly, described the first pipe side outlet and described the second pipe side outlet are positioned at same level, and described inOne end of the second arm is bent upwards from described the second pipe side outlet, and bending peak enters lower than described pipe sideMouthful; When condensed water liquid level in condenser is during lower than the peak of the second arm bending, in the second arm upwardsIn bending section, form a water seal fluid column, condensed water only flows out from the first arm, reduces the control of condensation flow outflowThe resistance in chamber processed; When condensed water liquid level in condenser is during higher than the peak of the second arm bending, the first armFlow out condensed water with the second arm, two strands of condensed waters mix in flow-control chamber simultaneously, increase condensation flowThe difficulty of outflow control chamber, slows down the back-flow velocity of condensed water.
Preferably, described the second pipe side outlet is higher than described the first pipe side outlet; When condensed water liquid in condenserFace is during lower than the second pipe side outlet, and condensed water only flows out from the first arm, reduces the control of condensation flow outflowThe resistance in chamber; When condensed water liquid level in condenser is during higher than the second pipe side outlet, the first arm and the second armFlow out condensed water, two strands of condensed waters mix in flow-control chamber simultaneously, increase the control of condensation flow outflowThe difficulty in chamber, slows down the back-flow velocity of condensed water.
Preferably, described condenser is vertically or is arranged at obliquely in described condensation water tank.
Preferably, described inlet pipeline is provided with the isolating valve of often opening.
Preferably, one end of described outlet conduit is provided with non-return valve, and described non-return valve is positioned at described normally closedBetween isolating valve and condensing reflux pipeline.
Preferably, one end of described outlet conduit is connected with described flow-control outlet, described outlet conduitThe other end be upwards communicated with described condensing reflux pipeline to downward-extension bending; Through volume control device speed governingAfter condensed water enter after outlet conduit through flow-control outlet, outlet conduit lower than condensing reflux pipelineExtension and bending bending section upwards form water seal, the circulation that blocking-up water seal both sides gas is set of water seal,Prevent through condenser but uncooled steam for liquid condensation water flows into described steam generator, prevent from steaming simultaneouslyVapour generator secondary side steam blows back in condenser through condensing reflux pipeline.
Brief description of the drawings
Fig. 1 is that application number is the schematic diagram of 201120001424.1 Chinese invention patent.
Fig. 2 is first enforcement of the present invention with the secondary side residual heat removal system of non-active volume control deviceExample be applied to presurized water reactor schematic diagram.
Fig. 3 is the enlarged drawing of A portion in Fig. 2.
Fig. 4 is second enforcement of the present invention with the secondary side residual heat removal system of non-active volume control deviceExample be applied to presurized water reactor schematic diagram.
Fig. 5 is the enlarged drawing of B portion in Fig. 4.
Fig. 6 is when higher, two arms of condensed water liquid level flow out condensed water simultaneously in condenser, flow-control dressThe flow regime schematic diagram of the condensed water in putting.
Fig. 7 is when in condenser, condensed water liquid level is lower, only the first arm flows out condensed water, flow-control dressThe flow regime schematic diagram of the condensed water in putting.
Fig. 8 is three enforcement of the present invention with the secondary side residual heat removal system of non-active volume control deviceExample be applied to presurized water reactor schematic diagram.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction withEmbodiment also coordinates accompanying drawing to be explained in detail.
As shown in Figure 2 for the present invention is with the secondary side residual heat removal system of non-active volume control deviceThe first embodiment is applied to the schematic diagram of presurized water reactor. Presurized water reactor comprises that the pressure being arranged in containment A00 holdsDevice 100, steam generator 200, primary side circulation canal 300, voltage-stablizer 400 and be arranged on containment A00The outer secondary side residual heat removal system 500 with non-active volume control device. Particularly:
Containment A00 is made up of cement, concrete etc. conventionally, for preventing the radioactive substance in reactorOverflow.
Pressure vessel 100 comprises heap chamber 110 and the first heat exchange chamber 120. Heap chamber 110 is for accommodating reactor, there is nuclear fission or nuclear fusion etc. therein for nuclear fuel assembly and produce nuclear reaction heat in reactor core; The first heat is handed overChange chamber 120 for holding primary side water, and on the sidewall of the first heat exchange chamber 120, offer for low temperature currentThe first import 121 entering and first outlet 122 of flowing out for high-temperature water. The sidewall of pressure vessel 100 is for preventingThe material that radioactive substance leaks is made, and generally selects steel material.
Primary side circulation canal 300 comprises cryogenic pipelines 310, high temperature pipe 320 and is connected in cryogenic pipelines310 and high temperature pipe 320 between the first heat exchange pipeline 330. Cryogenic pipelines 310 is by the first import532121 are connected with the first heat exchange chamber 120, and high temperature pipe 320 is by the first outlet 122 and the first warmInverting chamber 120 is connected, the first heat exchange pipeline 330 in steam generator 200 with secondary side waterCarry out heat exchange with cooling. Primary side circulation canal 300 and the first heat exchange chamber 120 form primary side loop.
Steam generator 200 comprises that the second heat exchange chamber 210, the second heat exchange chambers 210 are for holding secondary sideWater. On the sidewall of steam generator 200, offer second import 533220 Hes of passing through for high temperature pipe 320The second outlet 230, the first heat exchange pipelines 330 that pass through for cryogenic pipelines 310 are placed in the second heat exchange chamber210 is interior to realize with the heat exchange of the interior secondary side water of the second heat exchange chamber 210 with cooling.
Voltage-stablizer 400 is connected with primary side circulation canal 300, to ensure in primary side circulation canal 300Keep high pressure conditions, make primary side water under the condition of high temperature, still keep liquid. In the present embodiment, voltage stabilizingDevice 400 is connected in high temperature pipe 320.
Secondary side residual heat removal system 500 with non-active volume control device is connected in main steam pipe 240And between condensing reflux pipeline 250. With the secondary side residual heat removal system 500 of non-active volume control deviceComprise 510, condenser 520, volume control device 530, the first arm 540, the second arm 550, importPipeline 560 and outlet conduit 570. Cooling water tank 510 is for splendid attire cooling water; Condenser 520 is arranged atIn 510 and be positioned at condensing reflux pipeline 240 tops, inlet pipeline is passed through in the pipe side entrance 521 of condenser 520560 are connected with main steam pipe 240, and inlet pipeline 560 is provided with the isolating valve 561 of often opening, condenserOn 520, be positioned at pipe 521 belows, side entrance and offer the first pipe side outlet 522 and the second pipe side outlet 523,In the present embodiment, condenser 520 is and is arranged at vertically in 510, certainly, and also tiltable of condenser 520Be positioned in 510, in any case place, only need to ensure that pipe side entrance 521 be positioned at the first pipe side outlet 522With the second pipe side outlet 523 tops; Volume control device 530 be arranged at condenser 520 below andThere is flow-control chamber 531, on flow-control chamber 531, offer the first import 532, the second import 533 andFlow-control outlet 534, particularly, shown in Fig. 6-Fig. 7, the cross section in flow-control chamber 531 isCircle, flow-control outlet 534 is positioned at the circle centre position of 531 bottoms, flow-control chamber, the first import 532 HesThe second import 533 is all opened on the sidewall in flow-control chamber 531 and the first import 532 and the second import 533Be positioned at same level; The first arm 540 connects respectively 532, the second of the first pipe side outlet and the first importsPipe 550 connects respectively the second pipe side outlet and the second import 533; Outlet conduit is passed through in flow-control outlet 534570 are communicated in the condensing reflux pipeline that is positioned at volume control device 530 belows; On described outlet conduit 570, establishHave normally closed isolating valve 571 and non-return valve 572, non-return valve 572 is positioned at normally closed isolating valve 571 and condensation is returnedBetween stream pipeline 250, wherein normally closed isolating valve 572 is that the present invention is with non-active volume control deviceThe startup valve of secondary side residual heat removal system 500, non-return valve 572 flows backwards for preventing steam or condensed waterEnter condenser 520.
Further, in the present embodiment, the first pipe side outlet 522 and the second pipe side outlet 523 are all offeredIn the bottom of condenser 520, the first pipe side outlet 522 is connected with the first arm 540, and the second pipe side goes outMouth 523 is connected with the second arm 550. Wherein, one end of the second pipe side outlet 523 goes out from the second pipe sideMouth 523 is bent upwards and forms one to epimere 551, and bending is subsequently communicated in volume control device 530 downwards, toOn the peak to epimere 551 that is bent to form lower than pipe side entrance 521. When the interior condensed water liquid of condenser 520Face is during lower than peak to epimere 551, in to the interior formation one water seal fluid column of epimere 551, condensed water only fromThe first arm 540 flows out, and reduces the resistance of condensation flow outflow control chamber 531; When in condenser 520Condensed water liquid level is during higher than peak to epimere 551, and the first arm 540 and the second arm 550 flow simultaneouslyGo out condensed water, two strands of condensed waters, in the interior mixing in flow-control chamber 531, increase condensation flow outflow control chamber531 difficulty, slows down the back-flow velocity of condensed water.
As shown in Fig. 4-Fig. 5, the present invention is with the secondary side residual heat removal system of non-active volume control deviceThe second embodiment be applied to presurized water reactor schematic diagram, be only with the difference of first embodiment of the invention:Two pipe side outlets 523 ' are higher than the first pipe side outlet 522 ', and particularly, the first pipe side outlet 522 ' is opened in coldThe bottom of condenser 520 ', the second pipe side outlet 523 ' is opened on the sidewall of condenser 520 ', and the first pipe side goes outMouth 522 ' is connected with the first arm 540, and the second pipe side outlet 523 ' is connected with the second arm 550. WhenWhen in condenser 520 ', condensed water liquid level is lower than the second pipe side outlet 523 ', condensed water is only from the first arm 540Flow out, reduce the resistance of condensation flow outflow control chamber 531; When the interior condensed water liquid level of condenser 520 highIn the time of the second pipe side outlet 523 ', the first arm 540 and the second arm 550 flow out condensed water, two strands simultaneouslyCondensed water, in the interior mixing in flow-control chamber 531, increases the difficulty of condensation flow outflow control chamber 531, subtractsThe back-flow velocity of slow condensed water.
Shown in Fig. 6-Fig. 7, the direction of the traffic of the first import 532 is just to flow control chamber 531 bottomsCircle centre position, the not circle centre position to flow control chamber 531 bottoms just of the direction of the traffic of the second import 533. SpecificallyGround, the cross section in the first import 532 and the second import 533 flow-control chambeies, place 531 is circular, firstThe direction of the traffic of import 532 is through the center of circle of this cross section, and the direction of the traffic of the second import 533 and first is enteredThe direction of the traffic of mouth 532 is 90 ° of angles, and the second import 533 place circular radius and the first import 532The angle of place circular radius is acute angle. Therefore, flowing into flow-control chamber 531 from the first import 532Condensation flow is to flow-control outlet 534, and the condensed water that flows into flow-control chamber 531 from the second import 533 isIts vertical impact is mixed, make mixed condensed water in flow-control chamber 531 interior generation vortex, enter oneStep increases the difficulty of condensation flow outflow control chamber 531.
In conjunction with Fig. 2-Fig. 3 and Fig. 6-Fig. 7 to thering is the present invention with two of non-active volume control device 530The course of work of the presurized water reactor of inferior side residual heat removal system the first embodiment makes a detailed description:
The interior maintenance high pressure conditions of pressure vessel 100. Accommodating reactor core in heap chamber, exists for nuclear fuel assemblyIts inner nuclear fission or nuclear fusions etc. of occurring produce nuclear reaction heat; In the first heat exchange chamber 120, fill primary sideWater, the heat that primary side water absorbs fission generation is warming up to 300 DEG C of left and right, and the high pressure in pressure vessel makes heightIt is liquid that the primary side water of temperature keeps.
The primary side water of high temperature enters high temperature pipe 320 through the first outlet 122, enters subsequently the second heat exchange chamberThe first heat exchange pipeline 330 in 210, carries out heat exchange with the secondary side water in the second heat exchange chamber 210,The primary side water of lowering the temperature after heat exchange enters cryogenic pipelines 320, again flows back to subsequently in the first heat exchange chamber 120Again absorb the heat that nuclear fission produces. More than complete a heat exchange circulation of primary side water. This heat exchangeMove in circles and carry out, heat nuclear fission being produced by primary side water is delivered to secondary side water.
After the heat of the secondary side water absorption primary side water of steam generator 200 interior normal pressures, be gasificated into rapidly steam,Steam enters the main steam pipe 240 at steam generator 200 tops, when opening normally closed isolating valve and Chang KaiWhen isolating valve, steam enters condenser 520 from inlet pipeline 560, is condensed into liquid in condenser 520Secondary side condensed water enters volume control device 530 through pipe side outlet 540, through volume control device 530550Condensed water after speed governing flows back to steam generator 200 through condensing reflux pipeline 250. Complete secondary side water onceHeat exchange circulation. This heat exchange circulation back and forth carries out, and absorbs the heat gasification of primary side water by secondary side water,To reduce the heat in primary side loop, and then reduce the temperature of heap in-core.
When the interior condensed water liquid level of condenser 520 is during lower than peak to epimere 551, in epimere 551Form a water seal fluid column, condensed water only flows out from the first arm 540, reduces condensation flow outflow control chamber531 resistance, as shown in Figure 6; When the interior condensed water liquid level of condenser 520 is higher than the peak to epimere 551Time, the first arm 540 and the second arm 550 flow out condensed water simultaneously, and two strands of condensed waters are in flow-control chamber531 interior mixing, increase the difficulty of condensation flow outflow control chamber 531, slow down the back-flow velocity of condensed water,Shown in Fig. 7, more specifically:
The condensation flow flowing into from the first import 532 is to the stream of circle centre position that is positioned at 531 bottoms, flow-control chamberAmount is controlled outlet 534, and it is cold that the condensed water vertical current flowing into from the second import 533 flows into the first import 532Solidifying water, mixes its vertical impact, mixed condensed water in flow-control chamber 531 due to speed inertiaAnd generation vortex flow, condensation flow is slowed down gradually in vortex flow process. Rear inflow flow-control chamber 531The vortex that produces of condensed water mixed convection push condensed water after reduction of speed and flow to 531 middle parts, flow-control chamber,Condensed water after reduction of speed is because Action of Gravity Field flows into condensing reflux pipeline 250 through flow-control outlet 534.
Fig. 8 is three enforcement of the present invention with the secondary side residual heat removal system of non-active volume control deviceExample be applied to presurized water reactor schematic diagram. Only be with the difference of first embodiment of the invention: outlet conduit 570 ' 'One end and flow-control outlet 534 be connected, outlet conduit 570 ' ' the other end extend to form extension downwardsThe lower end of section 573 ' ', extension 573 ' ' is lower than condensing reflux pipeline 250, and bending subsequently upwards forms bending section574 ' ', bending section 574 ' ' upper end be connected with condensing reflux pipeline 250. In the process of system operation,What the condensed waters that flow out through flow-control outlet 534 entered outlet conduit 570 ' ' after, at outlet conduit 570 ' ' is lowIn the extension 573 ' of condensing reflux pipeline 250 ' and bending bending section 574 ' upwards ' formation water seal, water sealThe circulation of blocking-up both sides gas is set, prevents through condenser 520 but the uncooled vapor stream for liquid condensation waterEnter described steam generator 200, prevent that steam in steam generator 200 is through condensing reflux pipeline 250 simultaneouslyBlow back in condenser 520. Described water seal is by preventing product between steam generator 200 and condenser 520Give birth to steam-return line, thereby ensured the stable operation of system, the reliability and the security that improve presurized water reactor.
The secondary side residual heat removal system of non-active volume control device 530 is at condenser 520 and condensing refluxBetween pipeline 250, access non-active volume control device 530, non-active volume control device 530 and condenserBetween 520, be connected by the first arm 540 and the second arm 550, and the second arm 550 is only at condenserThe higher time work of 520 interior condensed water liquid level. When the interior condensed water of condenser 520 is less, water level is when lower, condensationWater only flows into non-active volume control device 530 from the second arm 550, subsequently from flow-control outlet 534 streamsEnter condensing reflux pipeline 250; When the interior condensed water of condenser 520 is more, water level is when higher, condensed water respectively theOne arm 540 and the second arm 550 flow into 530, two bursts of condensation flow of non-active volume control device at non-energyMoving volume control device 530 relatively flows and mixes, thereby has slowed down the flow velocity of condensed water, and quickening system reachesStable state and then derive effectively, constantly the heat of primary side water, prevents that core temperature is too high, subtracts simultaneouslyPressure oscillations in mini system pipeline, thereby the stability of raising system operation; Condenser 520 is positioned at non-energyMoving volume control device 530 tops, non-active volume control device 530 are positioned on condensing reflux pipeline 250Side, each several part height differently arranges, and makes condensed water without external impetus, only rely on condensed water self heavyPower is feasible system operation, and safety and stability and reliability are high.
Above disclosed is only the preferred embodiments of the present invention, certainly can not limit the present invention with thisInterest field, the equivalent variations of therefore doing according to the present patent application the scope of the claims, still belongs to the present invention and containsScope.
Claims (11)
1. with a secondary side residual heat removal system for non-active volume control device, be connected in steam generatorBetween main steam pipe and condensing reflux pipeline, the described secondary side waste heat with non-active volume control deviceDischarge system comprises for the cooling water tank of splendid attire cooling water, is arranged in described cooling water tank and described in being positioned atThe condenser of condensing reflux pipeline top; The pipe side entrance of described condenser is by inlet pipeline and described main steamingSteam pipe line is connected, and it is characterized in that: with the secondary side residual heat removal system of non-active volume control deviceAlso comprise volume control device, the first arm and the second arm, described volume control device have the first import,The second import and flow-control outlet, described condenser has the first pipe side outlet and the second pipe side outlet, instituteState the first arm and be communicated with described the first pipe side outlet and the first import respectively, described the second arm respectively with instituteState the second pipe side outlet and the second import and be communicated with, described flow-control exports by outlet conduit and described condensationReflux pipeline is communicated with, and described outlet conduit is provided with normally closed isolating valve.
2. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: described volume control device has the rounded flow-control chamber of a cross section.
3. the secondary side residual heat removal system with non-active volume control device as claimed in claim 2, its spyLevy and be: described flow-control outlet is opened in the bottom in described flow-control chamber, described the first import and theTwo imports are opened in the sidewall in described flow-control chamber.
4. the secondary side residual heat removal system with non-active volume control device as claimed in claim 3, its spyLevy and be: described flow-control outlet is opened in the circle centre position of bottom, described flow-control chamber, and described first entersThe direction of the traffic of mouth is just to described circle centre position, and the direction of the traffic of described the second import is not just to described circle centre position.
5. the secondary side residual heat removal system with non-active volume control device as claimed in claim 3, its spyLevy and be: the angle of the direction of the traffic of the direction of the traffic of described the second import and described the first import is 90 degree,And the angle between the radius at the radius at described the first import place and described the second import place is acute angle.
6. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: described the first pipe side outlet and described the second pipe side outlet are positioned at same level, and described secondOne end of arm is bent upwards from described the second pipe side outlet, and bending peak is lower than described pipe side entrance.
7. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: described the second pipe side outlet is higher than described the first pipe side outlet.
8. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: described condenser is vertically or is arranged at obliquely in described condensation water tank.
9. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: described inlet pipeline is provided with the isolating valve of often opening.
10. the secondary side residual heat removal system with non-active volume control device as claimed in claim 1, its spyLevy and be: one end of described outlet conduit is provided with non-return valve, described non-return valve be positioned at described normally closed isolating valve andBetween condensing reflux pipeline.
The 11. secondary side residual heat removal systems with non-active volume control device as claimed in claim 1, its spyLevy and be: one end of described outlet conduit is connected with described flow-control outlet, described outlet conduit anotherOne end is upwards communicated with described condensing reflux pipeline to downward-extension bending.
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| CN103810930A (en) * | 2014-02-18 | 2014-05-21 | 中国核动力研究设计院 | Thermal hydraulic feature experimental simulation device for secondary side passive residual heat removal system |
| CN107179169B (en) * | 2017-06-14 | 2019-05-17 | 中广核工程有限公司 | A kind of nuclear power station check valve action test set and test method |
| CN107403650B (en) * | 2017-08-25 | 2023-11-03 | 中国船舶重工集团公司第七一九研究所 | Secondary side passive waste heat discharging system of offshore floating nuclear power station |
| CN112786223B (en) * | 2021-01-14 | 2023-10-31 | 中广核研究院有限公司 | Waste heat discharging system and flow stabilizing method |
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| CN1041665A (en) * | 1988-09-30 | 1990-04-25 | 西门子公司 | Have after heat and get rid of the application of the thermonuclear reaction shut-down system of pipeline and this pipeline boiling water and pressurized-water reactor |
| US5329564A (en) * | 1993-04-30 | 1994-07-12 | The Babcock & Wilcox Company | Passive cooling system for a nuclear reactor |
| CN201946323U (en) * | 2011-01-05 | 2011-08-24 | 中科华核电技术研究院有限公司 | Emergency water supply system for nuclear power station |
| CN203397712U (en) * | 2013-07-31 | 2014-01-15 | 中科华核电技术研究院有限公司 | Secondary side residual heat removal system with passive flow control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7881421B2 (en) * | 2006-11-28 | 2011-02-01 | Mitsubishi Heavy Industries, Ltd. | Accumulator |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041665A (en) * | 1988-09-30 | 1990-04-25 | 西门子公司 | Have after heat and get rid of the application of the thermonuclear reaction shut-down system of pipeline and this pipeline boiling water and pressurized-water reactor |
| US5329564A (en) * | 1993-04-30 | 1994-07-12 | The Babcock & Wilcox Company | Passive cooling system for a nuclear reactor |
| CN201946323U (en) * | 2011-01-05 | 2011-08-24 | 中科华核电技术研究院有限公司 | Emergency water supply system for nuclear power station |
| CN203397712U (en) * | 2013-07-31 | 2014-01-15 | 中科华核电技术研究院有限公司 | Secondary side residual heat removal system with passive flow control device |
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