CN207624390U - A kind of marine PWR seawater cooling Passive residual heat removal system - Google Patents
A kind of marine PWR seawater cooling Passive residual heat removal system Download PDFInfo
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- CN207624390U CN207624390U CN201721341135.XU CN201721341135U CN207624390U CN 207624390 U CN207624390 U CN 207624390U CN 201721341135 U CN201721341135 U CN 201721341135U CN 207624390 U CN207624390 U CN 207624390U
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- steam
- seawater
- removal system
- condenser
- passive residual
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a kind of marine PWR seawater to cool down Passive residual heat removal system, is related to nuclear reactor safety facility field comprising reactor pressure vessel, containment and at least one heat extraction subsystem.Heat extraction subsystem includes steam generator, condenser, Main Coolant pipeline, steam pipework, condensate line and the water loop of outboard side.Its steam generator includes steam generation part and heat exchanging part.After accident, the water cycle discharge of outboard side between the water in the outside of the shell of steam pipework and condensate line between steam generation part and condenser that the waste heat in reactor passes through Main Coolant pipeline, containment both sides between reactor pressure vessel and heat exchanging part, condenser and ship.The utility model obtains the passive flowing of the medium in this system using equipment potential difference and Media density official post, achievees the purpose that the passive discharge waste heat of safety.
Description
Technical field
The utility model is related to nuclear reactor safety facility fields, and in particular to a kind of marine PWR seawater cooling is secondary
Side passive residual heat removal system.
Background technology
With the development to society, people have been no longer satisfied with the development of resources of land, have started marine resources
Exploitation.But the exploitation of marine resource, the exploitation on island, personnel are lived, enhancement of environment all demands endlessly energy resource supply.
The ship of small-sized presurized water reactor is carried as deepwater emerging energy carrier, can be exploitation and the island of offshore oil
Small island exploitation provides energy resource supply.In addition to sea fixed point energy supply, it can be used for large power ship energy supply and sea water desalination is supplied water,
It is great to the development significance of marine resources.As gradually input application, people also increasingly pay attention to the peace in its performance indicator for it
Quan Xing.
Land nuclear power station uses active residual heat removal system, for marine environment, it is desirable that metastable ring
Border possesses the main pipeline of superior performance, and the energy that waste heat or accident afterheat is discharged comes from other land functional facilities, the energy
The dosage limitation in source is few, and type is more.
Marine environment is relatively severe with respect to terrestrial environment and marine heat-extraction system is isolated so that and stand-by power source limitation is more,
Type is few, therefore after full ship dead electricity (exhaust, fail comprising Emergency power source etc.) accident occurs, main pump is stopped transport, reaction
Core pressure vessel coolant flow speed declines, the heat that reactor core generates bulk deposition in reactor pressure vessel coolant system,
Presurized water reactor temperature is caused to increase.When temperature reaches presurized water reactor bearing temperature limiting value, accident will occur.Therefore one need be developed
Residual heat removal system of the kind suitable for the marine PWR of marine environment.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of marine PWR seawater is cold
But Passive residual heat removal system, can it is passive discharge presurized water reactor in waste heat, improve carry Small reactor ship
The security performance of oceangoing ship.
To achieve the above objectives, the technical scheme adopted by the utility model is that：
A kind of marine PWR seawater cooling Passive residual heat removal system, which is characterized in that it includes：
Reactor pressure vessel；
Containment, the reactor pressure vessel are set in the containment；
At least one heat extraction subsystem comprising：
The steam generator being set in containment comprising heat exchanging part and steam generation part, and the steam generation
Partial interior divides cavity to be formed by Main Coolant pipeline filled with condensed water, the heat exchanging part and the reactor pressure vessel
Heat exchange cycle, the Main Coolant pipeline is interior to be filled with Main Coolant, and the heat exchanging part is located above reactor pressure vessel；
The outer and condenser in board set on containment comprising steam inlet, condensation-water drain, the steam inlet
The region for being not filled by condensed water with the steam generation part by steam pipework is connected, and the condensation-water drain passes through condensate
Pipeline and the vapor generation part split-phase unicom, the condenser are located above steam generation part, simultaneously；
The condenser is exchanged heat by heat exchanging pipe and outboard seawater circulation to lower condenser temperature, the condenser position
Below light line.
Based on the above technical solution, the heat exchanging part includes first part and second part, the main cooling
Agent pipeline includes the Main Coolant hot pipe section being connected respectively with second part with the first part and Main Coolant cold tube section.
Based on the above technical solution, the heat exchanging pipe includes pipe line and cold pipeline, the pipe line, cold pipe
Road one end is connect with condenser, and the other end is connected with shell.
Based on the above technical solution, it is provided with solenoid valve on condensate line.
Based on the above technical solution, the solenoid valve has been arranged in parallel hand-operated valve.
Based on the above technical solution, condensate line is equipped with check-valves.
Based on the above technical solution, steam pipework and condensate line are equipped with isolating valve.
Based on the above technical solution, the isolating valve can be opened and closed by remote information.
Based on the above technical solution, the heat exchanging pipe is equipped with control valve.
Compared with prior art, the utility model has the advantage of：
(1) the utility model marine PWR seawater cooling Passive residual heat removal system avoids setting in primary side
Purchase use heat-extraction system, need not the trepanning on main pipeline, avoid the increase of pipe stress, let out to reduce Main Coolant
It divulges a secret danger, while alleviating anxiety problem in space in containment；
(2) the utility model marine PWR seawater cooling Passive residual heat removal system by equipment potential difference and
Media density official post obtains the passive cycle of the medium in this system, and the waste heat overstock in reactor is able to that medium is followed to be discharged.
(3) the condenser structure pattern in the utility model pressure heap Passive residual heat removal system peculiar to vessel is vertical
Formula single tube pass heat exchanger, shell-side is without flow-stopping plate, and simple in structure, external resistance is smaller in heat exchanger tube.
(4) vessel draft is deep in the utility model pressure heap Passive residual heat removal system peculiar to vessel, condenser pipe
Length and position rationally being capable of passive discharge waste heats so that this system is suitable for most of hull ship.
Description of the drawings
Fig. 1 is the structural representation that the utility model marine PWR seawater cools down Passive residual heat removal system
Figure.
In figure：1- reactor pressure vessels, 11- Main Coolant hot pipe sections, 12- Main Coolant cold tube sections, 2- steam generations
Device, 20- heat exchanging parts, 21- steam generations part, 22- condensed waters, 23- steam pipeworks, 24- condensate lines, 25- steam go out
Mouthful, 26- condensing water inlets, the steam inlets 27-, 28- condensation-water drains, 3- condensers, 31- pipe lines, the cold pipelines of 32-, 41- electricity
Magnet valve, 42- hand-operated valves, 43- check-valves, 44- isolating valves, 45- control valves, 46- steam valves, 47- water-supply valves, 5- containments, 6-
Shell.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, it is passive remaining that the utility model embodiment provides a kind of marine PWR seawater cooling secondary side
Hot discharge system comprising the reactor vessel and at least one heat extraction subsystem being set to inside containment 5.Its heat extraction subsystem
Include the steam generator 2 in containment 5 and the condenser 3 in 5 outer ship of containment.
Steam generator 2 includes heat exchanging part 20 and steam generation part 21, and heat exchanging part 20 is reacted with above-mentioned
Core pressure vessel 1 forms heat exchange cycle by Main Coolant pipeline, and heat exchanging part 20 is located at 1 top of reactor pressure vessel：
Heat exchanging part 20 contains first part and second part, and Main Coolant pipeline contains Main Coolant hot pipe section 11 and Main Coolant is cold
One end of pipeline section 12, Main Coolant hot pipe section 11 and Main Coolant cold tube section 12 is respectively the same as the first part of heat exchanging part 20 and
Two parts connect, and the other end is connect with reactor pressure vessel 1；After accident generation, waste heat heap in reactor pressure vessel 1
Product heats Main Coolant.Main Coolant declines because endothermic temperature rises density to float, and heat exchanging part 20 is located at reaction stacking pressure
1 top of force container flow to heat exchanging part 20 along Main Coolant hot pipe section 11 with the Main Coolant of accumulation waste heat, is changing
After hot part 20 transfers heat to steam generation part 21, Main Coolant release thermal temperature declines density and increases and sink, edge
It Main Coolant cold tube section 12 and returns to reactor pressure vessel 1.
Steam generation part 21 and condenser 3 form heat exchange cycle, condenser 3 by steam pipework 23, condensate line 24
The preferred vertical single tube pass heat exchanger of structure, simple in structure, interior external resistance is small.Condenser 3 includes steam inlet 27 and condensation
Steam (vapor) outlet 25 and condensing water inlet 26, steam inlet 27 and the steam generation are contained in water out 28, steam generation part 21
The region that condensed water 22 is not filled by part 21 is connected by steam pipework 23, which is steam (vapor) outlet 25；Condensed water goes out
Mouth 28 is connected with the steam generation part 21 by condensate line 24, which is condensing water inlet 26.When accident occurs
Afterwards, after the heat that Main Coolant carries in the condensate absorption heat-exchange part 20 in steam generation part 21, it is converted into steam rising,
Since condenser 3 is located at 21 top of steam generation part, steam passes through containment 5 to enter condenser 3 along steam pipework 23,
Steam release converting heat is that condensed water 22 returns to steam generation part along condensate line 24 across containment 5 in condenser 3
21。
Condenser 3 is located at the lower section of 21 top water line of steam generation part, and passes through the sea of heat exchanging pipe 31 and outboard
Water circulation heat exchange reduces the temperature of condenser 3：The water loop of outboard side includes pipe line 31 and cold pipeline 32, pipe line 31 and cold pipe
One end unicom on road 32 is in 3 other end of condenser with shell unicom.After accident occurs, steam is converted into condensation in condenser 3
Water 22 is released the water that heat is cooled in water loop and is absorbed, and the water of outboard side water loop absorbs temperature rise density decline after heat
And float and flowed out from pipe line 31, and the water of outboard side is driven to enter condenser 3 from cold pipeline 32.
In presurized water reactor nuclear power unit normal operation, it is passive that the utility model marine PWR seawater cools down secondary side
Residual heat removal system is in stand-by state：Steam pipework 23 or condensate line 24 are equipped with solenoid valve 41, and are moved by presurized water reactor core
The power system power supply of power apparatus, the solenoid valve 41 in power supply state are in off state.Presurized water reactor nuclear-powered ship occurs complete
After ship dead electricity, Emergency power source are exhausted or failed, solenoid valve 41 is opened because losing the power supply of electric system, and the utility model is peculiar to vessel
Presurized water reactor seawater cools down Passive residual heat removal system and opens.Hand-operated valve 42 is preferably arranged in parallel on solenoid valve 41, when
System occurs other accidents and needs to manually boot the utility model marine PWR seawater cooling secondary side passive residual heat removal
When system, it can be opened by hand-operated valve 42.Hand-operated valve 42 and solenoid valve 41 are because being arranged in parallel, it is only necessary to hand-operated valve 42 and electromagnetism
41 any unlatching of valve can open this marine PWR seawater cooling Passive residual heat removal system.
The hand-operated valve 42 and solenoid valve 41 being arranged in parallel are preferably disposed on condensate line 24.If what is be arranged in parallel is manual
Valve 42 and solenoid valve 41 are set to steam pipework 23, and condensed water 22 enters steam generation part 21, and condensed water 22 absorbs main cooling
The heat of the Main Coolant of agent endothermic section, condensed water 22 continue endothermic disintergration for steam enters steam pipework 23 and by above-mentioned parallel connection
The hand-operated valve 42 and solenoid valve 41 of setting prevent, and cause steam accumulation in steam pipework 23 that this system internal pressure is caused constantly to increase
Add, in turn results in security risk；Condensed water 22 can be prevented to enter steam generation conversely, being set in parallel its of condensate line 24
Part 21, reduces security risk.
24 end of condensate line is preferably provided with check-valves 43, when condensed water 22 absorbs steam generation after heat is converted to steam
Part 21 internal pressure rises, the check-valves 43 that condensed water 22 and steam be arrangeds due to 24 end of condensate line can not countercurrently from
Condensate line 24 enters condenser 3, it is therefore prevented that condensate line 24 is damaged because of adverse current.
The steam pipework 23 and condensate line 24 that steam pipework 23 is included are preferably provided with isolating valve 44, and outboard side water returns
The pipe line 31 and cold pipeline 32 that road includes are preferably provided with control valve 45：When this marine PWR secondary side passive residual heat is arranged
Except in system pipeline or equipment leakage accident occurs when, can be got dirty by closing isolating valve 44 or control valve 45 to be isolated
Contaminate substance.After accident generation, the position where above-mentioned isolating valve 44 or control valve 45 may be not suitable for personnel enter or
Person operates isolating valve 44 and control valve 45, and isolating valve 44 and control valve 45 preferably can be opened and be closed by remote operation
It closes, further, it is preferable to use motor-driven valves for isolating valve 44, and it is preferable to use ball valves for control valve 45.
The part being located in steam pipework 23 in containment 6 is preferably provided with steam valve 56, when steam excessively caused stress
It can reduce pressure by 56 discharge section steam of steam valve when big.The part being located in containment 6 in condensate line 24 is preferred
Be arranged water-supply valve 57, water-supply valve 57 by release or input condensed water 22 control condensate line 24 in condensed water 22 number.
The utility model is not limited to the above embodiment, for those skilled in the art, is not departing from this reality
Under the premise of with new principle, several improvements and modifications can also be made, these improvements and modifications are also considered as the utility model
Within protection domain.The content not being described in detail in this specification belongs to existing skill well known to professional and technical personnel in the field
Art.
Claims (9)
1. a kind of marine PWR seawater cools down Passive residual heat removal system, which is characterized in that it includes：
Reactor pressure vessel (1)；
Containment (5), the reactor pressure vessel (1) are set in the containment (5)；
At least one heat extraction subsystem comprising：
The steam generator (2) being set in containment (5) comprising heat exchanging part (20) and steam generation part (21), and institute
Steam generation part (21) inside points cavity is stated filled with condensed water (22), the heat exchanging part (20) and the reactor pressure to hold
Device (1) forms heat exchange cycle by Main Coolant pipeline, and Main Coolant, the heat exchanging part are filled in the Main Coolant pipeline
(20) are divided to be located above reactor pressure vessel (1)；
It is set to the condenser (3) of containment (5) outside and in board comprising steam inlet (27), condensation-water drain (28), institute
State the region phase that steam inlet (27) is not filled by condensed water (22) by steam pipework (23) with the steam generation part (21)
Unicom, the condensation-water drain (28) are connected by condensate line (24) and the steam generation part (21), the condensation
Device (3) is located above steam generation part (21)；Meanwhile
The condenser (3) is exchanged heat by heat exchanging pipe (31) and outboard seawater circulation to lower condenser (3) temperature, described cold
Condenser (3) is located at below light line.
2. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
The heat exchanging part (20) includes first part and second part, the Main Coolant pipeline include respectively with the first part
The Main Coolant hot pipe section (11) and Main Coolant cold tube section (12) being connected with second part.
3. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
The heat exchanging pipe (31) include pipe line (31) and cold pipeline (32), the pipe line (31), cold pipeline (32) one end with it is cold
Condenser (3) connects, and the other end is connected with shell.
4. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
Solenoid valve (41) is provided on condensate line (24).
5. marine PWR seawater as claimed in claim 4 cools down Passive residual heat removal system, it is characterised in that：
The solenoid valve (41) has been arranged in parallel hand-operated valve (42).
6. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
Condensate line (24) is equipped with check-valves (43).
7. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
Steam pipework (23) and condensate line (24) are equipped with isolating valve (44).
8. marine PWR seawater as claimed in claim 7 cools down Passive residual heat removal system, it is characterised in that：
The isolating valve (44) can be opened and closed by remote information.
9. marine PWR seawater as described in claim 1 cools down Passive residual heat removal system, it is characterised in that：
The heat exchanging pipe (31) is equipped with control valve (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721341135.XU CN207624390U (en) | 2017-10-10 | 2017-10-10 | A kind of marine PWR seawater cooling Passive residual heat removal system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721341135.XU CN207624390U (en) | 2017-10-10 | 2017-10-10 | A kind of marine PWR seawater cooling Passive residual heat removal system |
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| CN207624390U true CN207624390U (en) | 2018-07-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833641A (en) * | 2017-10-10 | 2018-03-23 | 中国船舶重工集团公司第七〇九研究所 | A kind of marine PWR seawater cools down Passive residual heat removal system |
| CN109166638A (en) * | 2018-08-23 | 2019-01-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of coolant hydrogenation system and method for small-sized heap |
| CN112577333A (en) * | 2020-12-09 | 2021-03-30 | 哈尔滨工程大学 | Passive safety system for inhibiting water hammer induced by steam condensation |
-
2017
- 2017-10-10 CN CN201721341135.XU patent/CN207624390U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107833641A (en) * | 2017-10-10 | 2018-03-23 | 中国船舶重工集团公司第七〇九研究所 | A kind of marine PWR seawater cools down Passive residual heat removal system |
| CN109166638A (en) * | 2018-08-23 | 2019-01-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of coolant hydrogenation system and method for small-sized heap |
| CN109166638B (en) * | 2018-08-23 | 2024-02-13 | 中国船舶重工集团公司第七一九研究所 | Coolant hydrogenation system and method for small stack |
| CN112577333A (en) * | 2020-12-09 | 2021-03-30 | 哈尔滨工程大学 | Passive safety system for inhibiting water hammer induced by steam condensation |
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