CN105869686B - Presurized water reactor containment part compartment hydrogen flows distribution character experimental provision - Google Patents
Presurized water reactor containment part compartment hydrogen flows distribution character experimental provision Download PDFInfo
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- CN105869686B CN105869686B CN201610210282.7A CN201610210282A CN105869686B CN 105869686 B CN105869686 B CN 105869686B CN 201610210282 A CN201610210282 A CN 201610210282A CN 105869686 B CN105869686 B CN 105869686B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
A kind of presurized water reactor containment part compartment hydrogen flows distribution character experimental provision, including：The vessel array and detecting system being made up of the pressure resistant vessel of multiple cascades, wherein：Detecting system is connected by pipeline with vessel array to receive the temperature in each pressure resistant vessel, pressure and gas solubility data, vessel array is provided with flowing line, exhaust line and admission line, pressure resistant vessel is provided with heating and thermal insulation mechanism, the present invention can simulate to local compartment hydrogen flow distribution in containment under accident conditions, by controlling each valve to change the circulation area between connected mode and container between container, the connection simulated between different compartments includes horizontal connection, vertical connection and it is horizontal with vertically with the mode such as horizontal composite joint, carrying out a variety of driving forces includes concentration drive, pressure differential and source item driving etc. under effect caused hydrogen tested in the flow distribution of local compartment difference liquid form.
Description
Technical field
The present invention relates to a kind of technology of nuclear industry security fields, specifically a kind of presurized water reactor containment part compartment
Hydrogen flows distribution character experimental provision.
Background technology
In light water reactor power plant major accident, with water or vapor strong oxidation reaction, production occur for zirconium alloy cladding
Raw substantial amounts of hydrogen, and be discharged into by major loop pressure boundary or pressure vessel cut in containment.When reactor core fused mass enters
Contacted after entering the heap chamber of containment with concrete or aqueous phase, strong chemical reaction can be triggered to produce substantial amounts of hydrogen and a small amount of again
Other flammable explosive gas, such as carbon monoxide.Caused hydrogen mixes with the vapor in containment, air in accident, and
And transmit between the compartments.
Compartment is large number of in the containment of presurized water reactor, including：Steam generator compartment, CMT compartments, voltage-stablizer every
Between, built-in material-changing water tank compartment, main pump compartment etc., the location of passage between compartment is also different, is between compartment
Horizontal connection (high position connection, low level connection), vertical connection, therefore due to company complicated between compartment in the containment of presurized water reactor
The influence of binding structure and other factorses, the density of hydrogen of some local compartments in containment under accident conditions is caused to raise.When
After density of hydrogen reaches certain proportion, under suitable external condition, for example (,) temperature, pressure, oxygen concentration, these mixed gas
Detonation will occur, and may be thus converted into exploding, very high pressure peak is formed within the extremely short time, it is resulting quiet
State and dynamic pressure load, entail dangers to containment integrity, and influence effective execution of security system in containment.
In terms of hydric safe, the advanced reactor that China designs at present designs for advanced pressurized water reactor, under accident conditions, heap
A large amount of hydrogen can be produced in core superheating process, there is typical presurized water reactor Hydrogen source characteristic, caused hydrogen may under accident
Burning occurs in containment even to explode, threatens containment integrity.Hydric safe based on continuous development is recognized, it is necessary to right
Large pressurized water reactor hydric safe correlation technique optimizes, and further furthers investigate a series of nuclear safety problems after its accident,
To prevent radioactive substance from revealing to greatest extent.Hydric safe problem directly affects the final barrier of nuclear power plant's radioactive substance
That is the integrality of containment deepens the understanding to hydrogen flowing distribution character in containment, and optimize, it is necessary to furtherd investigate
Hydrogen control system, optimize and Hydrogen risk alleviation, the use directive/guide of control measures are designed in Severe accident management system.
But the research for flowing Distribution Phenomena and mechanism to the hydrogen between containment compartment at present still has deficiency,
To under accident conditions, containment is interior due to including the flow distribution characteristic aspect of the hydrogen under a variety of mechanisms between the compartments
Research it is also deficienter, hydrogen containment compartment flow distribution characteristic understanding is also not very clear, lack professional research
Equipment.
Found by the retrieval to prior art, Chinese patent literature CN104269195A, publication date is 2015 01
The moon 07, a kind of experimental system and its implementation for simulating Nuclear Safety shell basis accident operating mode is disclosed, solves existing skill
Art can not comprehensive simulated nuclear power basis accident operating mode the problem of, including for load passive hydrogen recombiner complete machine experiment hold
Device, it is arranged in experiment container, the first pressure sensor for test experience container internal pressure, data collecting system, with
And discharge duct, air supply system, hydrogen supply system and the sampling pipe of at least four being connected with experiment container；
The experiment container is connected by multipoint thermocouple with data collecting system.But the technology can not containment under simulated accident operating mode
Hydrogen flowing Distribution Phenomena between interior compartment, the hydrogen flowing distribution machine between containment compartment under accident conditions can not be parsed
Reason, Hydrogen risk that can not comprehensively in detailed research safety shell compartment.
The content of the invention
The present invention is directed to deficiencies of the prior art, proposes a kind of presurized water reactor containment part compartment hydrogen flowing
Distribution character experimental provision.
The present invention is achieved by the following technical solutions：
The present invention includes：The vessel array and detecting system being made up of the pressure resistant vessel of multiple cascades, wherein：Detecting system
It is connected by pipeline with vessel array to receive the temperature in each pressure resistant vessel, pressure and gas solubility data, vessel array
Flowing line, exhaust line and admission line are provided with, pressure resistant vessel is provided with heating and thermal insulation mechanism.
Described heating and thermal insulation mechanism includes the electrical heating wire being wrapped on pressure resistant vessel housing and is connected with electrical heating wire
Heating control module.
Described detecting system includes：Sensing data acquisition module and measurement of concetration module, wherein：Sensing data gathers mould
Block is connected with the pressure sensor and temperature sensor being all arranged in pressure resistant vessel to receive pressure data and temperature data, dense
Degree measurement module is connected with pressure resistant vessel for detecting the gas concentration in pressure resistant vessel.
Described vessel array includes：First pressure resistant vessel, the second pressure resistant vessel, the 3rd pressure resistant vessel and the 4th pressure-bearing are held
Device, wherein：First pressure resistant vessel is connected by the connecting pipe of about two arrangements with the second pressure resistant vessel, the second pressure resistant vessel
Hold with the 3rd pressure resistant vessel, the 3rd pressure-bearing and be connected respectively by connecting pipe with the 4th pressure resistant vessel.
Admission line, flowing line and exhaust line are equipped with described the first pressure resistant vessel and the 4th pressure resistant vessel,
3rd pressure resistant vessel is provided with exhaust line, and the second pressure resistant vessel is provided with exhaust line and flowing line.
Technique effect
Compared with prior art, the present invention can be carried out to local compartment hydrogen flow distribution in containment under accident conditions
Simulation, change the circulation area between connected mode and container between container by controlling each valve, simulation it is different every
Between between connection include horizontal connection, vertical connection and horizontal with the mode such as horizontal composite joint, carrying out a variety of vertically
Driving force include concentration drive, pressure differential and source item driving etc. under effect caused hydrogen in local compartment difference liquid form
Flow distribution experiment.Temperature sensor, pressure sensor and measurement of concetration module can measure reality in real time in experimentation
The change of pressure, temperature and gas concentration during testing, it is the hydrogen flowing point of local compartment in containment under accident conditions
Cloth characteristic research provides experimental data, and then solves the flow distribution rule of bright hydrogen, grasps localized hydrogen gas risk rule in containment
Rule.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
In figure：1 first pressure resistant vessel, 2 second pressure resistant vessels, 3 the 3rd pressure resistant vessels, 4 the 4th pressure resistant vessels, 5 heating are protected
Warm mechanism, 6 ball valves, 7 electric control valves, 8 admission lines, 9 exhaust lines, 10 flowing lines, 11 connecting pipes, 12 detection systems
System, 13 computers, 14 detection pipelines.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
As shown in figure 1, the present embodiment includes：The vessel array and detecting system being made up of the pressure resistant vessel of multiple cascades
12, wherein：Detecting system 12 is connected to receive temperature, the pressure in each pressure resistant vessel by detecting pipeline 14 with vessel array
With gas solubility data, vessel array is provided with flowing line 10, exhaust line 9 and the air inlet for inputting helium and vapor
Pipeline 8, pressure resistant vessel are provided with heating and thermal insulation mechanism 5.
Described vessel array includes：First pressure resistant vessel 1, the second pressure resistant vessel 2, the 3rd pressure resistant vessel 3 and the 4th are held
Pressure vessel 4, wherein：First pressure resistant vessel 1 is connected by the connecting pipe 11 of about two arrangements with the second pressure resistant vessel 2, the
Two pressure resistant vessels 2 and the 3rd pressure resistant vessel 3, the 3rd pressure resistant vessel 3 and the 4th pressure resistant vessel 4 pass through one article of connecting pipe 11 respectively
It is connected.
Described the first pressure resistant vessel 1, the second pressure resistant vessel 2 and the 4th pressure resistant vessel 4 is cylinder, and internal diameter is
2000mm, height are 4000mm, are all made up of 316 stainless steels, and design pressure is 0.8Mpa.First pressure resistant vessel 1 is vertical
Set, upper surface is provided with exhaust line 9, and lower surface is provided with flowing line 10, and its left side lower end is provided with admission line 8.
The second described pressure resistant vessel 2 is vertically arranged, its pass on left about two connecting pipes be arrangeding in parallel 11 with
The right side of first pressure resistant vessel 1 is connected.The upper surface of second pressure resistant vessel 2 is provided with exhaust line 9, and lower surface is provided with drainpipe
Line 10.
The 3rd described pressure resistant vessel 3 is cylinder, and internal diameter is 1900mm, a height of 2800mm, by 316 stainless steels
Into design pressure 0.8Mpa.3rd pressure resistant vessel 3 is vertically arranged, and upper surface is provided with exhaust line 9, and its left lower leads to
The right upper portion that connecting pipe 11 is crossed with the second pressure resistant vessel 2 is connected.
Described the 4th pressure resistant vessel 4 is laterally set, and the lower surface of upper side wall and the 3rd pressure resistant vessel 3 passes through connecting pipe
11 are connected, and its lower wall left end is provided with drainage pipeline, and lower wall right-hand member is provided with admission line 8.
The described length of connecting pipe 11 is 1000mm, design pressure 0.8MPa, a diameter of 200mm, stainless by 316
Steel is made, and its both ends is connected using flange with corresponding pressure resistant vessel.Each middle part of connecting pipe 11 is provided with electronic
Regulating valve 7, to control the connection area of connecting pipe 11.
The internal diameter of described exhaust line 9, flowing line 10 and admission line 8 is 30mm, by 316 stainless steels
Into being connected by welding manner with corresponding pressure resistant vessel.Internal diameter is equipped with exhaust line 9, flowing line 10 and admission line 8
For 30mm ball valve 6, the mode that each ball valve 6 is connected through a screw thread is connected with corresponding pipeline, controls the opening and closing of corresponding pipeline.
Described heating and thermal insulation mechanism 5 includes：The electrical heating wire that is wrapped on the housing of pressure resistant vessel and coupled
Heating control module, electrical heating wire heating is controlled to realize the heating of pressure resistant vessel or insulation by the heating control module.
Described detecting system 12 includes：Sensing data acquisition module and measurement of concetration module, wherein：Sensing data gathers
Module is connected with the pressure sensor and temperature sensor being arranged in pressure resistant vessel to receive pressure data and temperature data, dense
Degree measurement module is connected with pressure resistant vessel for detecting the gas concentration in pressure resistant vessel.The measurement of concetration module is by internal diameter
Gas in 1mm pipeline extraction pressure resistant vessel.The detecting system 12 finally transfers data to coupled computer 13,
With for further analysis.
Pressure resistant vessel is heated to test required temperature by described heating and thermal insulation mechanism 5, and helium generation is used in experimentation
For hydrogen, it is helium and vapor to supply experimental gas into pressure resistant vessel by admission line 8, and regulation electric control valve 7 is controlled
The folding of each connecting pipe 11 between pressure resistant vessel processed, flowing of the simulation gas between different compartments and obtain temperature data,
Pressure data and gas concentration data.
The present apparatus can be simulated to local compartment hydrogen flow distribution in containment under accident conditions, each by controlling
Individual valve changes the circulation area between connected mode and container between container, and the connection simulated between different compartments includes
Horizontal connection, vertical connection and it is horizontal with the mode such as horizontal composite joint, carrying out a variety of driving forces includes concentration drive vertically
Caused hydrogen is tested in the flow distribution of local compartment difference liquid form under the effect such as dynamic, pressure differential and source item driving.
Temperature sensor, pressure sensor and measurement of concetration module can pressure, temperature during measurement experiment in real time in experimentation
The change of degree and gas concentration, the hydrogen flowing distribution character research for local compartment in containment under accident conditions provide in fact
Data are tested, and then solve the flow distribution rule of bright hydrogen, grasp localized hydrogen gas risk Law in containment.
Claims (6)
1. a kind of presurized water reactor containment part compartment hydrogen flows distribution character experimental provision, it is characterised in that including：By multiple
The vessel array and detecting system of the pressure resistant vessel composition of cascade, wherein：Detecting system be connected by pipeline with vessel array with
Receive temperature, pressure and the gas concentration data in each pressure resistant vessel, vessel array be provided with flowing line, exhaust line and
Admission line, pressure resistant vessel are provided with heating and thermal insulation mechanism；
Described vessel array includes：First pressure resistant vessel, the second pressure resistant vessel, the 3rd pressure resistant vessel and the 4th pressure resistant vessel,
Wherein：First pressure resistant vessel by about two arrangement connecting pipes be connected with the second pressure resistant vessel, the second pressure resistant vessel and
3rd pressure resistant vessel, the 3rd pressure-bearing are held and are connected respectively by connecting pipe with the 4th pressure resistant vessel, wherein：First pressure resistant vessel and
It is equipped with admission line, flowing line and exhaust line on 4th pressure resistant vessel, the 3rd pressure resistant vessel is provided with exhaust line, and second
Pressure resistant vessel is provided with exhaust line and flowing line, and the first pressure resistant vessel, the second pressure resistant vessel, the 3rd pressure resistant vessel and the 4th are held
Pressure vessel is connected with detecting system respectively, and the detecting system includes：Sensing data acquisition module and measurement of concetration module, wherein：
Sensing data acquisition module is connected to receive number pressure with the pressure sensor and temperature sensor being all arranged in pressure resistant vessel
According to and temperature data, measurement of concetration module be connected with pressure resistant vessel for detecting the gas concentration in pressure resistant vessel.
2. presurized water reactor containment part compartment hydrogen according to claim 1 flows distribution character experimental provision, its feature
It is that described heating and thermal insulation mechanism includes the electrical heating wire being wrapped on pressure resistant vessel housing and the heating being connected with electrical heating wire
Control module.
3. presurized water reactor containment part compartment hydrogen according to claim 1 flows distribution character experimental provision, its feature
It is that the internal diameter of described exhaust line, flowing line and admission line is 30mm, and passes through welding manner and corresponding pressure-bearing
Container is connected.
4. presurized water reactor containment part compartment hydrogen according to claim 1 flows distribution character experimental provision, its feature
It is that the first described pressure resistant vessel, the second pressure resistant vessel and the 4th pressure resistant vessel are design pressure 0.8MPa, internal diameter
2000mm, high 4000mm cylinder, the 3rd pressure resistant vessel are design pressure 0.8MPa, internal diameter 1900mm, high 2800mm circle
Cylinder.
5. presurized water reactor containment part compartment hydrogen according to claim 1 flows distribution character experimental provision, its feature
It is that described connecting pipe is provided with electric control valve, connecting pipe a length of 1000mm, design pressure 0.8MPa.
6. presurized water reactor containment part compartment hydrogen according to claim 1 flows distribution character experimental provision, its feature
It is to be equipped with ball valve on described exhaust line and flowing line.
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| CN201610210282.7A CN105869686B (en) | 2016-04-06 | 2016-04-06 | Presurized water reactor containment part compartment hydrogen flows distribution character experimental provision |
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| CN105869686B true CN105869686B (en) | 2017-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109387544B (en) * | 2018-09-03 | 2021-01-15 | 中国辐射防护研究院 | Method for estimating explosion source item of hydrogen mixed gas in high-level radioactive waste liquid storage tank |
| CN112666049B (en) * | 2020-11-24 | 2024-03-01 | 中国辐射防护研究院 | Platform and method for simulating aerosol multi-compartment transportation of post-treatment fire accident |
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| JP2012233729A (en) * | 2011-04-28 | 2012-11-29 | Hitachi-Ge Nuclear Energy Ltd | Nuclear power plant and operation method thereof |
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