CN104392749B - A kind of passive trip protection system of accelerator-driven sub-critical system - Google Patents
A kind of passive trip protection system of accelerator-driven sub-critical system Download PDFInfo
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- CN104392749B CN104392749B CN201410526100.8A CN201410526100A CN104392749B CN 104392749 B CN104392749 B CN 104392749B CN 201410526100 A CN201410526100 A CN 201410526100A CN 104392749 B CN104392749 B CN 104392749B
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- accelerator
- passive
- soft magnetic
- magnetic materials
- shutdown
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Particle Accelerators (AREA)
Abstract
The invention discloses a kind of passive trip protection system of accelerator-driven sub-critical system, belong to a kind of device of passive trip protection system of the passive shutdown apparatus field of accelerator-driven sub-critical system.The passive reactor shut-off system device is the intelligent shutdown unit of temperature triggered.The present invention is using soft magnetic materials when core exit coolant temperature is more than the Curie-point temperature of soft magnetic materials, it is lost magnetism due to the physical property of itself, soft magnetic materials disconnects the absorption with permanent magnet, so as to which the positive and negative switch of accelerator is disconnected, realizes the purpose of passive shutdown；Reactor is made, which to occur need not too to rely on after accident operations staff's judgement promptly and accurately and the supply of extra power, just can complete corresponding safe shutdown function.
Description
Technical field
The invention belongs to the apparatus fields of the passive reactor shut-off system of accelerator-driven sub-critical system.More particularly to accelerator
A kind of device of the passive trip protection system of temperature triggered of the complementary shutdown system of subcritical system is driven, is added with realizing
The inherent safety of fast device driving subcritical system, the present invention relates to nuclear reactor designs technology, nuclear safety technology and related skills
Art.
Background technology
Nuclear power development will have to face processing and the disposal difficulties of nuke rubbish.Secondary actinium series nucleic (MA) in nuke rubbish and
The radiotoxicity of long-lived fission product (LLFP) is big, and the long half time of some nucleic is up to years up to a million, if without safety
Disposal can cause the offspring of the mankind potential radioactivity to threaten always.Accelerator-driven sub-critical system (ADS) is " new to occur
Nuclear waste transmuting and energy production nuclear power system ", in following long-run development, will realize advanced enclosed nuclear fuel cycle
Mode and with good resource, safety and environmental benefit, will be as the important channel of nuclear fission energy sustainable development.Chinese section
ADS transmuting technologies are classified as important development direction by institute, and strategic guide's science and technology special " future was formally started in 2011
Advanced nuclear fission energy-ADS transmutings system " project.Plan by the implementation of three phases special project, to the year two thousand thirty after build up industry
Using the Accelerator driven nuke rubbish transmuting demonstration plant of scale, ADS systems and nuke rubbish transmuting processing key technology are grasped, is made
The capability of independent innovation in the advanced nuclear energy field in China enters ranks advanced in the world.ADS devices are by accelerator and reactor by dissipating
It splits target to be organically combined into one, when accelerator stops, spallation reaction also stops therewith, and outer source neutron, K are lost in coveringeff
It is gradually reduced, until reaction is closed down.
The active reactor shut-off system of nuclear reactor routine theoretically passes through machinery, electrical or operator action, Ke Yishi
Now under exception or accident conditions safe shutdown purpose.System inputs an electric signal so that the electricity of control rod drive mechanism
Magnetic coil powers off, and control rod comes off, and realizes the control to reactor；Or the control realized to reactor is operated by people.
But these modes are all active, dependent on extrinsic motive or manual operation, it is necessary to certain response time, control system
Failure or the possibility of operations staff's maloperation can't exclude completely.
A degree of research has been carried out further to reduce the probability that accident occurs, the U.S., Japan, China etc..
One of which design is using the characteristic of carbon steel demagnetization under high temperature, realizes passive shutdown；Another design is using electromagnetism
The mode that iron and soft magnetic phase combine generates stationary magnetic field using electric current, iron core, loses magnetism by soft magnetism in Curie-point temperature
The characteristics of, realize the purpose of passive shutdown；What the reactor shut-off system of the designs such as our the prosperous loyalties of national business utilized is Curie-point temperature
Up to 1000 DEG C or more of Sm2Co7Permanent-magnet material.
The content of the invention
The purpose of the present invention is being directed to that the above-mentioned prior art is overcome to exist through machinery, electrical or operator action,
It can realize the purpose of safe shutdown under exception or accident conditions.System inputs an electric signal so that control rod driving machine
The electromagnetic coil power-off of structure, control rod come off, and realize the control to reactor；Or it is realized by the operation of people to reactor
Control.But these modes are all active, dependent on extrinsic motive or manual operation, it is necessary to certain response time and
There is the defects of certain failure likelihood, and a kind of passive Reactor trip system of the accelerator-driven sub-critical system proposed
System is the device of the passive trip protection system of temperature triggered.
The technical solution adopted by the present invention is：A kind of passive trip protection system of accelerator-driven sub-critical system,
It is characterized in that, the passive trip protection system is the intelligent shutdown unit of temperature triggered；Concrete structure is held in protection
The soft magnetic materials 1 of package forms magnetic intelligent switch with permanent magnet 2 in device 3.Soft magnetic materials 1 is by holding and disconnecting permanent magnet 2
To control the open and close of accelerator driven sub-critical system.Container is protected to be mounted on the screening cover of heap top, soft magnetic materials is placed on reactor core and goes out
At mouthful, to detect the temperature of core exit, which is fixed on reactor core exit by heap top screening cover.
Wherein, the soft magnetic materials 1 of package holds permanent magnet 2 and forms magnetic intelligent switch in the protection container 3.
Wherein, when the magnetic intelligent switch system temperature is less than the Curie-point temperature of soft magnetic materials, accelerator driven sub-critical system
Switch is kept closed, and when its temperature is higher than the Curie-point temperature of soft magnetic materials, accelerator driven sub-critical system switch is in disconnection shape
State.
Beneficial effects of the present invention：What the present invention utilized is Curie's dot characteristics of soft magnetic materials, makes reactor that accident occur
Corresponding security function can be just completed not depending on extraneous judgement later, i.e., be more than soft magnetic materials in coolant temperature
It during Curie-point temperature, is lost magnetism due to the physical property of itself, soft magnetic materials disconnects the absorption with permanent magnet, accelerator electricity
The switch in source disconnects, and realizes the purpose of shutdown.
Description of the drawings
Fig. 1 is a kind of structure of the passive trip protection system device of accelerator-driven sub-critical system of temperature triggered
Schematic diagram.
Fig. 2 is the ADS system diagrams containing passive reactor shut-off system.
In figure, 1. soft magnets, 2. permanent magnets, 3. protection containers, 4. insulation levers, 5. insulating materials, 6. accelerator driven sub-critical systems
Negative metal piece, 7. accelerator driven sub-critical system cathode metal pieces, 8. accelerator driven sub-critical system cathode conductors, 9. accelerator driven sub-critical system positive wires,
10. spring, 11. reactor cores, 12. passive trip protection systems, 13. reactor heat exchangers, 14. accelerators.
Specific embodiment
The present invention proposes a kind of a kind of passive trip protection system of accelerator-driven sub-critical system of temperature triggered
Device.The invention will be further described with example below in conjunction with the accompanying drawings.
Passive trip protection system as shown in Figure 1 is the intelligent shutdown unit of temperature triggered；Concrete structure is protection
Package soft magnetic materials 1 in container 3, protection container 3 are mounted on the screening cover of heap top, and one is formed by spring 10 and insulation lever 4
Lever, permanent magnet 2 are connected with insulation lever 4, and the power cathode 6 of accelerator is mounted on the upper end of insulation lever 4, the electricity of accelerator
Source anode 7 is mounted on the offside of the same level height of power cathode, and the horizontal distance of placement adsorbs forever for lower end soft magnetic bodies 1
During magnet 2, positive and negative anodes can just fit together, and switch is in closure state.
A kind of passive trip protection system of accelerator-driven sub-critical system, should be fixed on Accelerator driven
Surface 10cm at subcritical system core exit or so, while whole device is as small as possible, so as in measurement reactor core in time
The flowing of core exit cooling agent is not influenced while the temperature of outlet again.The positive and negative polarity wire of accelerator is with heat safe exhausted
Edge material includes, in case the high temperature coolant for being dumped in-core is damaged.A kind of accelerator-driven sub-critical system it is non-
Active trip protection system, specific size are as shown in table 1 below.
Table 1
The present invention using heat safe permanent magnet alnico alloy Alnico-6 (ingredient of Alnico-6 for 8%Al,
16%Ni, 24%Co, 3%Cu, 1%Ti, other is all Fe.Curie temperature is 860 DEG C) magnetic field is provided, utilize magnetic iron ore (Curie
About 578 DEG C of temperature) characteristic that loses magnetism when temperature is more than its Curie-point temperature, when the temperature anomaly in reactor is increased to
Or during more than its Curie-point temperature, soft magnetic materials disconnects automatically due to losing magnetic with permanent-magnet material, with permanent-magnet material phase
Lever arm even disconnects the switch of accelerator in the effect of pulling back of itself gravity and spring straight down, realizes non-energy
The purpose of dynamic shutdown；Reactor is made to occur need not too to rely on after accident operations staff's judgement accurately and timely and extra power
Supply just can complete corresponding safe shutdown function.When the material using different physical characteristics is formed, different curie points are magnetic to close
During golden material, which can apply to different accelerator-driven sub-critical systems or even apply to different types of nuclear power
Stand shutdown or protection system.
What the present invention did not elaborated partly belongs to techniques well known.
Claims (1)
- A kind of 1. passive trip protection system of accelerator-driven sub-critical system, which is characterized in that the passive shutdown Protection system is the intelligent shutdown unit triggered by core exit temperature；Concrete structure is package soft magnetism in protection container (3) Material (1), protection container (3) are mounted on the screening cover of heap top, form a lever by spring (10) and insulation lever (4), forever Magnet (2) is connected with lever arm, and the power cathode (6) of accelerator is mounted on the upper end of insulation lever (4), and the power supply of accelerator is just Pole (7) is mounted on the offside of the same level height of power cathode, and the horizontal distance of placement adsorbs for lower end soft magnetic materials (1) During permanent magnet (2), positive and negative anodes can just fit together, and switch is in closure state, the passive trip protection system The soft magnetic materials (1) of package and the magnetic intelligent switch system of permanent magnet (2) composition in middle protection container (3), when soft magnetic materials temperature When degree is less than its Curie-point temperature, accelerator driven sub-critical system switch is kept closed, and reactor is in normal operating condition；Work as soft magnetism When material temperature is higher than the Curie-point temperature of soft magnetic materials, accelerator driven sub-critical system switch is off, and reactor is in shutdown.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410526100.8A CN104392749B (en) | 2014-10-08 | 2014-10-08 | A kind of passive trip protection system of accelerator-driven sub-critical system |
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|---|---|---|---|
| CN201410526100.8A CN104392749B (en) | 2014-10-08 | 2014-10-08 | A kind of passive trip protection system of accelerator-driven sub-critical system |
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| Publication Number | Publication Date |
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| CN104392749A CN104392749A (en) | 2015-03-04 |
| CN104392749B true CN104392749B (en) | 2018-05-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108231218B (en) * | 2017-12-29 | 2023-05-30 | 安徽中科超核科技有限公司 | Passive shutdown protection system for nuclear power plant and other reactors |
| CN108831570B (en) * | 2018-05-14 | 2021-04-16 | 中广核研究院有限公司 | Emergency shutdown system and method of subcritical reactor system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203703258U (en) * | 2013-12-30 | 2014-07-09 | 浙江瑞仪工业自动化有限公司 | High temperature-resistant magnetic non-return valve |
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| RU2178497C1 (en) * | 2000-09-21 | 2002-01-20 | Половников Валерий Моисеевич | Magnetic lock |
| CN1631061A (en) * | 2002-04-25 | 2005-06-22 | Eps·爱玛·工程促进会·工程及医学应用加速器会 | Particle accelerator |
| CN200941161Y (en) * | 2006-08-28 | 2007-08-29 | 颜陶 | Magnetic sensing temp controller |
| JP5703512B2 (en) * | 2010-03-29 | 2015-04-22 | ジェイコブス ユーケー リミテッド | Accelerator-driven nuclear system with control of effective neutron multiplication factor |
| CN202312844U (en) * | 2011-11-07 | 2012-07-11 | 佛山市高明欧一电子制造有限公司 | Heat preservation type magnetic temperature control electric kettle |
| CN104008919B (en) * | 2014-05-30 | 2016-01-20 | 佛山市川东磁电股份有限公司 | A kind of non-shorting formula PTC power-off restoration thermostat |
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| CN203703258U (en) * | 2013-12-30 | 2014-07-09 | 浙江瑞仪工业自动化有限公司 | High temperature-resistant magnetic non-return valve |
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