CN208225529U - A kind of control rod for nuclear reactor component is kept and release structure - Google Patents
A kind of control rod for nuclear reactor component is kept and release structure Download PDFInfo
- Publication number
- CN208225529U CN208225529U CN201721438113.5U CN201721438113U CN208225529U CN 208225529 U CN208225529 U CN 208225529U CN 201721438113 U CN201721438113 U CN 201721438113U CN 208225529 U CN208225529 U CN 208225529U
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- scram
- permanent magnet
- control rod
- holding member
- core bar
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model provides a kind of control rod for nuclear reactor component and keeps and release structure comprising electromagnetism hold-in winding, scram energy-storaging spring, permanent magnet fall iron, core bar energy-storaging spring, keep spring, permanent magnet armature, hook link mechanism, scram core bar and turn-screw.Control rod for nuclear reactor component provided by the utility model is kept and release structure, has the advantages that simple and reliable for structure, operation is low in energy consumption, it is rapid to release stick scram, can be improved reactor economy and safety.
Description
Technical field
The utility model belongs to nuclear power plant's mechanical equipment field of structural design, and in particular to one kind is installed on motor lead screw spiral shell
Matrix control rod drive mechanism, for keeping and releasing the control the structure of rod assembly.
Background technique
Control rod and change control, burnable poison constitute three big means of control pile reactivity.Control rod drive mechanism
Be the mechanism for making the control rod of presurized water reactor move up and down or be maintained at a certain height: in reactor capability operation, control rod is driven
Motivation structure drive control rod assembly moves in reactor core or holding position is constant；In emergency shut-down, control rod drive mechanism is fast
Quick-release puts C&P systems, and guarantee neutron absorber can be reliable and be rapidly introduced into reactor core.
HAF102 " nuclear power plant design safety provides " requires reactor safety important system and the design of component that must accord with
Fail safe is closed, that is, rod assembly can be released the control when requiring control rod drive mechanism to lose power supply automatically.GJB843.24
" Submarine nuclear power pant design safety provides reactor control rod driving mechanism design criteria " requires control rod drive mechanism to have
There is energy storage equipment to accelerate while faulty safety to scram movement.
Control rod drive mechanism main Types have magnetic force hoisting type and motor feed screw nut formula, the former is chiefly used in land nuclear power
Factory, the latter are chiefly used in nuclear power plant of ship.
Magnetic control rod drive mechanism is run for many years in most of PWR nuclear power plants, and structure is more mature
Reliably；Motor feed screw nut formula control rod drive mechanism operating experience is less, structure still has optimization space.
Utility model content
The utility model in view of the deficiencies of the prior art, proposes that a kind of control rod for nuclear reactor component is kept and release is tied
Structure.
Control rod for nuclear reactor component is kept and release structure includes electromagnetism hold-in winding, scram energy-storaging spring, permanent magnetism
Body falls iron, core bar energy-storaging spring, keeps spring, permanent magnet armature, hook link mechanism, scram core bar and turn-screw.
Preferably, it when reactor capability is run, under the action of the holding spring, keeps at the permanent magnet armature
In lower part, hook is ejected by the hook link mechanism, hook is engaged with the annular groove on the scram core bar, keeps core bar
With the turn-screw position consistency.
Preferably, in reactor emergent rod drop, the permanent magnet falls iron and falls to and scram/holding member from highest point
Top contact, the magnetic field force that the permanent magnet is fallen between iron and the permanent magnet armature overcome spring force, the permanent magnet armature
The hook link mechanism is moved upwards and drives, hook and core bar annular groove are threaded off, and stick movement is released in completion.
Compared with prior art, the utility model has the following beneficial effects:
1, control rod for nuclear reactor component provided by the utility model keeps and discharges structure, and there is structure simply may be used
Lean on, run it is low in energy consumption, release the rapid advantage of stick scram, can be improved reactor economy and safety.
2, control rod for nuclear reactor component provided by the utility model keeps and discharges structure, can satisfy HAF102
" Submarine nuclear power pant design safety provides reactor control rod driving by " nuclear power plant design safety regulation " and GJB843.24
Mechanism design criteria " to the design requirement of control rod drive mechanism, and with simple and reliable for structure, operation is low in energy consumption, releases stick
The rapid advantage of scram, can be improved reactor economy and safety.
Detailed description of the invention
Fig. 1 is that control rod for nuclear reactor component provided by the utility model keeps and discharge structural schematic diagram.
Fig. 2 is that control rod drive mechanism scram provided by the utility model/holding member design drawings are intended to.
Fig. 3 is control rod drive mechanism scram provided by the utility model and homing action schematic diagram.
Wherein: 1-electromagnetism hold-in winding；2-fall iron energy-storaging spring；3-permanent magnets fall iron；4-core bar energy-storaging springs；
5-keep spring；6-permanent magnet armature；7-keep hook；8-keep structural framework；9-scram core bars；10-driving wires
Thick stick；11-permanent magnets fall iron；12-core bar energy-storaging springs；13-keep spring；14-permanent magnet armature；15-scram core bars；
16-connecting rods；17-hooks；18-hook support tubes；19-lead screw connecting columns；20-hold modes；21-electromagnetism hold-in windings
Power-off, fall iron ejection fall, fall iron and armature actuation after discharge core bar；The ejection of 22-core bars is fallen；23-electromagnetism hold-in windings
Power resumption, lead screw move upwards, and fall iron reset, fall the accumulation of energy again of iron spring；24-hook resetting coils are powered, and lead screw is downward
Move to bottom, the accumulation of energy again of core bar spring；The power-off of 25-hook resetting coils, core bar engage reset with hook completion.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
HAF102 " nuclear power plant design safety provides " requires reactor safety important system and the design of component that must accord with
Fail safe is closed, that is, rod assembly can be released the control when requiring control rod drive mechanism to lose power supply automatically.GJB843.24
" Submarine nuclear power pant design safety provides reactor control rod driving mechanism design criteria " requires control rod drive mechanism to have
While faulty safety there is energy storage equipment to accelerate to rod motion is fallen.
Control rod drive mechanism main Types have magnetic force hoisting type and motor feed screw nut formula, the former is chiefly used in land nuclear power
Factory, the latter are chiefly used in nuclear power plant of ship.Magnetic control rod drive mechanism is in most of PWR nuclear power plants
For many years, structure is more mature reliable for operation；Motor feed screw nut formula control rod drive mechanism operating experience is less, structure still have it is excellent
Change space.
Such as Fig. 1: being made of using the command bundle rods for nuclear reactors driving mechanism of the utility model following components: in control rod
Outside driving mechanism seal casinghousing top, an electromagnetism hold-in winding is installed；Inside capsul top, scram accumulation of energy bullet is installed
Spring；There is the permanent magnet that can be axially moved to fall iron inside capsul；The utility model is installed at the top of screw block
Core component-scram/holding member.
Such as Fig. 2: the core component-scram/holding member of the utility model is fixed on motor lead screw by lead screw connecting column
The screw block top of nut type control rod drive mechanism.Comprising by permanent magnet armature, connecting rod, hook in scram/holding member
Equal parts form transmission chain；Scram/holding member inside center has the circular channel for the movement of scram core bar.Permanent magnet armature
Polarity of the magnetic field is identical as permanent magnet armature, and when permanent magnet falls iron and scram/holding member top contacts, permanent magnet armature can
Hook is driven to retract outward；When permanent magnet falls iron and scram/holding member top is detached from, permanent magnet armature is keeping spring force
Hook is driven inwardly to stretch out under the action of self gravity.
In addition: in the utility model: permanent magnet is fallen iron and permanent magnet armature and need to be closed using fire resistant permanent magnet material SmCo
Gold is made after surface anticorrosion is handled；It cannot be timely to prevent material magnetic after effect from permanent magnet armature and permanent magnet being caused to fall iron
It is detached from, sheet type antifreeze plate is additionally provided at the top of scram/holding member.
It is described in detail below and uses the control rod drive mechanism of the utility model from holding control rod, releases the control stick, control
The operating principle that stick processed falls into reactor core and restores hold mode, promotes control rod:
Such as Fig. 3 (21): in normal reactor operation, the electromagnetism hold-in winding outside driving mechanism capsul top is in logical
Electricity condition is generated magnetic field, is hung on the absorption of permanent magnet falling bodies inside capsul top using magnetic field force.It is equipped with inside capsul top
Scram energy-storaging spring, permanent magnet fall the attraction between iron and electromagnetism hold-in winding by scram energy-storaging spring compress energy storage.?
In scram/holding member, the gravity of spring force and permanent magnet armature is kept to act on holding hook by connecting rod, hook is inwardly stretched
Out, it is engaged with the annular groove on scram core bar, so that scram core bar is synchronous with the holding of lead screw connecting column by a series of structures.Such as
This, motor rotation drives driving screw rod to move up and down, and passes through lead screw-lead screw connecting column-holding hook-one system of scram core bar
Column drive mechanism, the related C&P systems of driving scram core bar move up and down.
Such as Fig. 3 (22): when reactor needs emergent rod drop, the electromagnetism hold-in winding outside driving mechanism capsul top is disconnected
Electricity, permanent magnet fall iron under the action of gravity and scram energy-storaging spring power, and ejection is fallen.Permanent magnet falls iron and falls to scram/guarantor
After holding component top, the magnetic attraction that permanent magnet is fallen between iron and permanent magnet armature, which overcomes, keeps spring force and permanent magnet armature
Gravity, permanent magnet armature move upwards, and are driven by connecting rod and hook is kept to move out, de- with the annular groove on scram core bar
From.
Such as Fig. 3 (23): after keeping hook and scram core bar to be disconnected, the related C&P systems of scram core bar are in gravity
Under the action of core bar energy-storaging spring power, ejection is fallen, until C&P systems fall into reactor core lowest point.
Such as Fig. 3 (24): when reactor needs to restart, motor driven lead screw drives scram/holding member and forever first
Magnet falls iron and moves upwards, until scram energy-storaging spring is re-compressed.The electromagnetism outside driving mechanism capsul top is protected simultaneously
It holds coil to be re-energised, permanent magnet is fallen iron and is sucked by generation magnetic field.Motor driven lead screw drives scram/holding member downward later
Movement, permanent magnet falls iron and scram/holding member is detached from, stays in inside capsul top.Permanent magnet falls iron and scram/holding member
After disengaging, hook can inwardly stretch out again.
Such as Fig. 3 (25): motor driven lead screw drive scram/holding member, which continues to move downward, (is installed on capsul bottom
The hook resetting coil short time in outside is powered.Under the effect of hook resetting coil magnetic field force, keep hook that can retract outward) silk
Thick stick drive scram/holding member to move downward until inside scram core bar insertion scram/holding member, by core bar energy-storaging spring weight
New compression.
Such as Fig. 3 (26): after lead screw drives scram/holding member to move to extreme lower position, the power-off of hook resetting coil is kept
Hook inwardly stretches out, and completion is engaged with scram core bar.Thereafter, lead screw drives C&P systems upward by above-mentioned drive mechanism
Movement, reactor can reenter power operating states.
The utility model proposes one kind to be installed on motor feed screw nut formula control rod drive mechanism, for keeping and discharging
The new structure of C&P systems: iron is fallen by electromagnetism hold-in winding, scram energy-storaging spring, permanent magnet, core bar energy-storaging spring, is kept
The C&P systems holding and release structure of spring, permanent magnet armature, hook link mechanism, scram core bar, turn-screw composition.
In reactor operation, only it is located at the electromagnetism hold-in winding outside control rod drive mechanism capsul top and is powered；In reactor
When emergency shut-down, permanent magnet, which falls iron and scram core bar and launches under the action of gravity and spring force, falls into reactor core, can be well
Meeting HAF102 " nuclear power plant design safety regulation " and GJB843.24, " Submarine nuclear power pant design safety provides reactor
Control rod drive mechanism design criteria " to the design requirement of control rod drive mechanism.
Compared with prior art, the present embodiment has the advantages that
1, control rod for nuclear reactor component provided by the utility model keeps and discharges structure, and there is structure simply may be used
Lean on, run it is low in energy consumption, release the rapid advantage of stick scram, can be improved reactor economy and safety.
2, control rod for nuclear reactor component provided by the utility model keeps and discharges structure, can satisfy HAF102
" Submarine nuclear power pant design safety provides reactor control rod driving by " nuclear power plant design safety regulation " and GJB843.24
Mechanism design criteria " to the design requirement of control rod drive mechanism, and with simple and reliable for structure, operation is low in energy consumption, releases stick
The rapid advantage of scram, can be improved reactor economy and safety.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, due to corresponding to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Those skilled in the art can use different methods to achieve the described function each specific application, but
It is this realize it is not considered that beyond the scope of the utility model.
Obviously, it is practical new without departing from this can to carry out various modification and variations to utility model by those skilled in the art
The spirit and scope of type.If in this way, these modifications and variations of the present invention belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (1)
1. a kind of control rod for nuclear reactor component is kept and release structure, which is characterized in that including electromagnetism hold-in winding, scram
Energy-storaging spring, permanent magnet fall iron, core bar energy-storaging spring, keep spring, permanent magnet armature, hook link mechanism, scram core bar and
Turn-screw；Wherein, the electromagnetism hold-in winding is mounted on the outside on the driving mechanism seal casinghousing top of C&P systems, described
Scram energy-storaging spring is mounted on the inside on the driving mechanism seal casinghousing top of C&P systems, and the permanent magnet falls iron can be axial
The inside on the driving mechanism seal casinghousing top of C&P systems is arranged in movement ground；It further include screw block, the screw block
Top scram/holding member is installed；Scram/the holding member includes to be made of the permanent magnet armature, connecting rod, hook
Transmission chain；The scram/holding member inside center is equipped with the circular channel for scram core bar movement；The permanent magnet
It is same that the polarity of the magnetic field of armature and the permanent magnet fall iron phase, when contacting at the top of the permanent magnet falls iron and scram/holding member,
Permanent magnet armature is configured to be able to drive hook to be retracted outward；When permanent magnet falls iron and scram/holding member top is detached from,
Permanent magnet armature drives hook inwardly to stretch out under the action of being configured in holding spring force and self gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721438113.5U CN208225529U (en) | 2017-11-01 | 2017-11-01 | A kind of control rod for nuclear reactor component is kept and release structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721438113.5U CN208225529U (en) | 2017-11-01 | 2017-11-01 | A kind of control rod for nuclear reactor component is kept and release structure |
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| Publication Number | Publication Date |
|---|---|
| CN208225529U true CN208225529U (en) | 2018-12-11 |
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| CN201721438113.5U Active CN208225529U (en) | 2017-11-01 | 2017-11-01 | A kind of control rod for nuclear reactor component is kept and release structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665741A (en) * | 2017-11-01 | 2018-02-06 | 上海核工程研究设计院有限公司 | A kind of control rod for nuclear reactor component is kept and release structure |
| CN109585040A (en) * | 2018-12-29 | 2019-04-05 | 中国原子能科学研究院 | A kind of safe rod drive mechanism of small research heap |
| CN110718307A (en) * | 2019-10-17 | 2020-01-21 | 中国科学院合肥物质科学研究院 | Pre-stored energy reactivity control mechanism |
-
2017
- 2017-11-01 CN CN201721438113.5U patent/CN208225529U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665741A (en) * | 2017-11-01 | 2018-02-06 | 上海核工程研究设计院有限公司 | A kind of control rod for nuclear reactor component is kept and release structure |
| CN109585040A (en) * | 2018-12-29 | 2019-04-05 | 中国原子能科学研究院 | A kind of safe rod drive mechanism of small research heap |
| CN109585040B (en) * | 2018-12-29 | 2024-05-10 | 中国原子能科学研究院 | Safety bar driving mechanism for small research reactor |
| CN110718307A (en) * | 2019-10-17 | 2020-01-21 | 中国科学院合肥物质科学研究院 | Pre-stored energy reactivity control mechanism |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |