WO2022122015A1 - 具有安全防护功能的控制棒驱动机构 - Google Patents

具有安全防护功能的控制棒驱动机构 Download PDF

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Publication number
WO2022122015A1
WO2022122015A1 PCT/CN2021/137096 CN2021137096W WO2022122015A1 WO 2022122015 A1 WO2022122015 A1 WO 2022122015A1 CN 2021137096 W CN2021137096 W CN 2021137096W WO 2022122015 A1 WO2022122015 A1 WO 2022122015A1
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WO
WIPO (PCT)
Prior art keywords
assembly
magnetic pole
movable armature
support sleeve
transition support
Prior art date
Application number
PCT/CN2021/137096
Other languages
English (en)
French (fr)
Inventor
卢朝晖
陈叶青
靳书武
李泽文
刘亚男
刘青松
周国丰
芮旻
唐叔建
路广遥
胡伦宝
张超
乔建毅
苏晓炜
Original Assignee
中广核研究院有限公司
中国广核集团有限公司
中国广核电力股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中广核研究院有限公司, 中国广核集团有限公司, 中国广核电力股份有限公司 filed Critical 中广核研究院有限公司
Priority to EP21902720.8A priority Critical patent/EP4261845A1/en
Publication of WO2022122015A1 publication Critical patent/WO2022122015A1/zh

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/12—Means for moving control elements to desired position
    • G21C7/14—Mechanical drive arrangements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
    • G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
    • 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
    • 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

Definitions

  • the invention relates to the field of nuclear reactors, in particular to a control rod driving mechanism with a safety protection function.
  • the control rod driving mechanism of the reactor can also realize the function of dropping the control rod, so as to ensure the safe shutdown of the reactor.
  • the control rod assembly that has been inserted into the bottom of the core may be dislodged from the core, so that the safe shutdown of the reactor cannot be guaranteed.
  • the reactor control rod driving mechanism used at home and abroad is not equipped with a safety protection mechanism with a tipping lock function. Therefore, a control rod driving mechanism with a safety protection function is urgently needed to overcome the above defects.
  • the purpose of the present invention is to provide a control rod driving mechanism with safety protection function, which can ensure that the control rod assembly is locked in the core after the reactor overturns under extreme environmental conditions, so as to realize the safe shutdown of the reactor.
  • the control rod driving mechanism with safety protection function of the present invention includes a safety protection device, a rod position detector assembly, a pressure-resistant shell assembly, a hook assembly, a drive rod assembly and a coil assembly.
  • the rod position detector assembly is sleeved on the stroke sleeve in the pressure-resistant shell assembly
  • the hook assembly is sleeved in the sealing shell in the pressure-resistant shell assembly
  • the drive rod assembly is installed in the pressure-resistant shell assembly.
  • the safety protection device includes a fixed magnetic pole, a lock Dead coil, spring, movable armature, hook claw and transition support sleeve, the outer side of the fixed magnetic pole is installed in the sealing shell, the inner side of the fixed magnetic pole is fixedly sleeved with the first end of the transition support sleeve, The second end of the transition support sleeve is assembled and connected to the hook assembly, the movable armature is sleeved on the transition support sleeve in an axially slidable manner, and one end of the spring is elastically connected to the movable armature The other end of the inclined spring is in elastic contact with the fixed magnetic pole or the transition support sleeve, and the spring always has a tendency to drive the movable armature to slide away from the fixed magnetic pole.
  • the drive rod assembly is also inserted into the transition support sleeve and the fixed magnetic pole.
  • the locking coil is installed on the On the coil assembly, during the axial sliding process, the movable armature is linked with the hooking claw to perform a pivoting motion of engaging or disengaging with the driving rod assembly.
  • the safety protection device further includes a self-locking component installed at the movable armature, the transition support sleeve is provided with a matching locking structure that cooperates and locks with the self-locking component, and the movable armature is located at the position of the movable armature.
  • the self-locking assembly and the matching locking structure are locked to each other, so as to prevent the movable armature from moving away from any place under the action of the elastic force of the spring.
  • the matching locking structure is a groove.
  • the groove bottom wall of the groove is inclined toward the centerline of the transition support sleeve along the direction away from the fixed magnetic pole, and the groove side wall of the groove has a wall for blocking the self-locking assembly.
  • the blocking structure is located in front of the bottom wall of the groove in the direction away from the fixed magnetic pole, and the self-locking component blocks the movable armature by cooperating with the blocking structure Under the action of the elastic force of the spring, it slides in the direction away from the fixed magnetic pole.
  • the self-locking assembly includes a locking piece and an elastic restoring piece, the locking piece is slidably arranged on the movable armature along the sliding direction interlaced with the fixed magnetic pole, and the elastic restoring piece is arranged on the movable armature. Between the locking piece and the movable armature, the elastic restoring piece always has a tendency to drive the locking piece to slide to lock with the matching locking structure.
  • the self-locking assembly further includes a plug
  • the movable armature is provided with a stepped installation space passing through the side wall of the movable armature, and the small end of the stepped installation space faces the transition support sleeve, so The large end of the step installation space faces the sealing shell, the locking member is slidably placed in the step installation space, and the locking member also partially protrudes from the small end of the step installation space, so
  • the plug is installed in the large end of the step installation space, and the elastic restoring member elastically abuts between the plug and the locking member.
  • the elastic restoring member is sleeved on the locking member, the locking member is a pin and tongue structure, and the elastic restoring member is a compression spring.
  • the inner side of the fixed magnetic pole is provided with an active space for the axial expansion and contraction of the spring, the active space penetrates the fixed magnetic pole in the direction close to the movable armature, and the spring is located in the In the movable space, the spring is also sleeved on the transition support sleeve, and the second end of the spring is in elastic contact with the fixed magnetic pole; the shoulder of the inclined magnetic pole is installed in the sealing shell, the The second end of the transition support sleeve is threadedly connected with the hook assembly.
  • the safety protection device further comprises a connecting rod located in the movable armature, one end of the connecting rod is hinged with the movable armature, and the other end of the connecting rod is hinged with the hook claw,
  • the transition support sleeve is provided with an avoidance space for the hook to do a snap-fit or release pivot with the drive rod assembly.
  • the hook has a large tooth width and a single-tooth structure, and the tooth width of the hook is larger than the tooth slot of the drive rod assembly.
  • the present invention provides a safety protection device, which includes:
  • a fixed magnetic pole arranged in the sealing shell and a movable armature sleeved on the driving rod assembly, the movable armature is connected with a hook, and an elastic element is arranged between the fixed magnetic pole and the movable armature;
  • the movable armature when the fixed magnetic pole is electromagnetized, the movable armature can overcome the elastic force of the elastic element to slide toward the fixed magnetic pole under the action of the magnetic force of the fixed magnetic pole, and make the hook and the fixed magnetic pole slide.
  • the drive rod assembly is snapped together.
  • the safety protection device of the present invention when the driving rod assembly sways or overturns, the fixed magnetic pole flux can be electromagnetized. At this time, the movable armature can overcome the elastic element under the magnetic force of the fixed magnetic pole. The elastic force of the movable armature slides toward the fixed magnetic pole, and the sliding of the movable armature makes the hook snap on the drive rod assembly, so as to maintain the drive rod assembly in a proper position and ensure the safety of the drive rod assembly.
  • the safety protection device further includes a transition support sleeve sleeved on the drive rod assembly, the movable armature is sleeved on the transition support sleeve in an axial sliding manner, and the hook claw is pivotable. It is installed on the transition support sleeve and linked with the movable armature.
  • the movable armature is provided with a self-locking component
  • the transition support sleeve is provided with a matching locking structure that cooperates and locks with the self-locking component, and after the hook is buckled with the driving rod component, the The self-locking assembly and the matching locking structure are locked with each other.
  • the matching locking structure is a groove
  • the side wall of the groove has a blocking structure for blocking and matching with the self-locking assembly.
  • the The self-locking assembly extends into the groove, and blocks the movable armature from sliding away from the fixed magnetic pole under the elastic force of the elastic element through the blocking cooperation with the blocking structure.
  • the self-locking assembly includes a locking member and an elastic restoring member, the elastic restoring member is arranged between the locking member and the movable armature, and the elastic restoring member drives the locking member to elastically abut on the transition support sleeve.
  • the elastic restoring member is sleeved on the locking member, the locking member is a pin and tongue structure, and the elastic restoring member is a compression spring.
  • the outer side of the fixed magnetic pole is fixedly mounted on the sealing shell
  • the inner side of the fixed magnetic pole is fixedly sleeved on the transition support sleeve
  • the inner side of the fixed magnetic pole is provided with a shaft for the elastic element.
  • the elastic element is located in the movable space and is sleeved on the transition support sleeve to the movable space that is telescopically deformed.
  • the safety protection device further comprises a connecting rod, one end of the connecting rod is hinged with the movable armature, the other end of the connecting rod is hinged with the hook claw, and the transition support sleeve is provided with a connecting rod.
  • An escape space is provided for the hook to pivot and pivot with the drive rod assembly.
  • a locking coil for magnetizing the fixed magnetic pole is provided on the sealing case.
  • the present invention also provides a control rod driving mechanism, which includes a rod position detector assembly, a pressure-resistant shell assembly with a sealing shell, a hook assembly, a driving rod assembly, a coil assembly, and the aforementioned safety A protective device, the rod position detector assembly is sleeved on the stroke sleeve set in the pressure-resistant shell assembly, the drive rod assembly is inserted into the hook assembly and extends to the stroke sleeve, so The hook assembly is sheathed in the sealing shell, the transition support sleeve provided on the safety protection device is connected with the hook assembly, and the locking coil is sheathed outside the sealing shell.
  • the control rod driving mechanism of the present invention also includes a safety guard
  • the safety guard includes a fixed magnetic pole, a locking coil, a spring, a movable armature, a hook and a transition support sleeve, and the outer side of the fixed magnetic pole is It is installed in the sealing shell, the inner side of the fixed magnetic pole is fixedly sleeved with the first end of the transition support sleeve, and the second end of the transition support sleeve is assembled and connected with the hook assembly; the movable armature can be axially slidable sleeved on the transition support sleeve One end of the spring is in elastic contact with the movable armature, and the other end of the inclined spring is in elastic contact with the fixed magnetic pole or the transition support sleeve.
  • the drive rod assembly is also passed through the transition support sleeve and the fixed magnetic pole; the locking coil is installed on the coil assembly; the movable armature is in the process of axial sliding.
  • the interlocking claws perform a pivoting motion of engaging or releasing the drive rod assembly; therefore, with the cooperation of the fixed magnetic pole, the locking coil, the spring, the movable armature, the claws and the transition support sleeve, the control rod of the present invention is
  • the driving mechanism has a reliable safety protection function, which ensures that the control rod assembly can be reliably locked in the core after the reactor overturns under extreme environmental conditions, so as to realize the safe shutdown of the reactor;
  • the principle is simple and the structure is compact; in addition, the first end of the transition support sleeve is fixedly sleeved with the inner side of the fixed magnetic pole, and the second end of the transition support sleeve is assembled and connected with the hook assembly, and then fixed with the help of The outer side of the magnetic pole is installed in the sealed shell, so that the fixed magnetic pole, the transition support sleeve and the hook assembly are formed as a whole; similarly, the locking coil is installed on the coil assembly, and the locking coil and the coil
  • FIG. 1 is a schematic structural diagram of the control rod driving mechanism with safety protection function of the present invention after being partially sectioned.
  • FIG. 2 is a partial cross-sectional view of the safety protection device, the sealing case and the drive rod assembly in the control rod drive mechanism with safety protection function of the present invention, wherein the hook locks the drive rod assembly.
  • FIG 3 is a partial cross-sectional view of the safety protection device, the sealing case and the drive rod assembly in the control rod drive mechanism with safety protection function of the present invention, wherein the hook is not locked to the drive rod assembly.
  • FIG. 4 is a schematic diagram of a partial internal structure of the drive rod assembly in the control rod drive mechanism with safety protection function of the present invention.
  • FIG. 5 is a partial internal structure diagram of the hook claw of the safety protection device in the control rod driving mechanism with safety protection function of the present invention.
  • the control rod driving mechanism 100 with safety protection function of the present invention includes a safety protection device 10, a rod position detector assembly 20, a pressure-resistant shell assembly 30, a driving rod assembly 40, a coil assembly 50 and a hook Claw assembly 60 .
  • the rod position detector assembly 20 is sleeved on the travel sleeve 31 in the pressure-resistant shell assembly 30, so as to give the actual position signal of the driving rod assembly 40 when the control rod driving mechanism 100 of the present invention operates;
  • the hook assembly 60 is sheathed in the sealing shell 32 in the pressure-resistant shell assembly 30, preferably suspended in the sealing shell 32, to realize the functions of grasping, lifting, and inserting the driving rod assembly 40;
  • the driving rod assembly 40 is installed in the In the sealed shell 32, the driving rod assembly 40 is also passed through the hook assembly 60 (specifically, the space surrounded by the hook assembly 60) and extends to the stroke sleeve 31, and the stroke sleeve 31 provides the driving rod assembly 40 with movement Travel space;
  • the coil assembly 50 is shea
  • the present invention provides a safety protection device, which includes:
  • the movable armature 14 can slide toward the fixed magnetic pole 11 against the elastic force of the elastic element under the action of the magnetic force of the fixed magnetic pole 11 , and make the hook 15 and the driving rod assembly 40 buckle.
  • the fixed magnetic pole 11 can be electromagnetized.
  • the movable armature 14 can be under the magnetic force of the fixed magnetic pole 11. , overcoming the elastic force of the elastic element to slide towards the fixed magnetic pole 11 , the sliding of the movable armature 14 makes the hook 15 buckle on the driving rod assembly 40 to maintain the driving rod assembly 40 in a proper position, ensuring that the driving rod assembly 40 security.
  • the safety protection device 10 includes a fixed magnetic pole 11 , a locking coil 12 , a spring 13 , a movable armature 14 , a hook 15 and a transition support sleeve 16 .
  • the outer side 111 of the fixed magnetic pole 11 is installed in the sealing shell 32, preferably by means of the shoulder 114; 11 and the transition support sleeve 16 are fixed together; the second end of the transition support sleeve 16 is assembled and connected with the hook assembly 60, preferably threadedly connected with the hook assembly 60, such as but not limited to this with the hook assembly 60.
  • the lifting poles are screwed together so that the transition support sleeve 16 and the hook assembly 60 are fixed together, so that the fixed magnetic pole 11 , the transition support sleeve 16 and the hook assembly 60 form a whole.
  • the movable armature 14 is sleeved on the transition support sleeve 16 in an axially slidable manner, so that the movable armature 14 can axially slide on the transition support sleeve 16 .
  • One end of the spring 13 is in elastic contact with the movable armature 14, and the other end of the inclined spring 13 is in elastic contact with the fixed magnetic pole 11.
  • the other end of the inclined spring 13 can also be in elastic contact with the transition support sleeve 16, which can also make the spring 13 has a tendency to drive the movable armature 14 to slide in a direction away from the fixed magnetic pole 11 (ie, the direction indicated by arrow A).
  • the hook 15 is pivotally mounted on the transition support sleeve 16 and is linked with the movable armature 14 , and the driving rod assembly 40 is also passed through the transition support sleeve 16 and the fixed magnetic pole 11 .
  • the locking coil 12 is mounted on the coil assembly 50, specifically on the yoke 51 of the coil assembly 50; and the movable armature 14 is linked with the hook 15 during the axial sliding process to engage with the drive rod assembly 40 or The pivoting movement of the trip.
  • the safety guard 10 further includes a self-locking assembly 17 installed at the movable armature 14, and the transition support sleeve 16 is provided with a
  • the self-locking component 17 cooperates with the locking matching structure 16a, and the movable armature 14 locks the self-locking component 17 and the matching locking structure 16a with each other during the engaging process of the interlocking hook 15 and the driving rod assembly 40, so as to block the movable armature 14 Under the action of the elastic force of the spring 13, it slides in the direction away from the fixed magnetic pole 11, which effectively prevents the safety guard 10 from providing the locking function when the locking coil 12 is powered off during the locking process of the driving rod assembly 40.
  • the matching locking structure 16a is a groove, preferably, the groove is an annular groove, so as to facilitate the manufacture of the matching locking structure 16a, but not limited thereto.
  • the groove bottom wall 161 of the groove is inclined toward the centerline C of the transition support sleeve 16 along the direction away from the fixed magnetic pole 11 (ie, the direction indicated by the arrow A), and the groove side wall of the groove has
  • the blocking structure 162 is used to block and cooperate with the self-locking component 17.
  • the blocking structure 162 is located in front of the bottom wall 161 of the groove along the direction away from the fixed magnetic pole 11.
  • the movable armature 14 slides in a direction away from the fixed magnetic pole 11 under the elastic force of the spring 13 , which more reliably improves the locking effect of the safety guard 10 on the driving rod assembly 40 .
  • the self-locking assembly 17 includes a locking member 171 and an elastic restoring member 172 .
  • the locking member 171 is slidably disposed on the movable armature 14 along the sliding direction interlaced with the fixed magnetic pole 11 , and the elastic restoring member 172 Located between the locking member 171 and the movable armature 14, the elastic restoring member 172 always has the function of driving the locking member 171 to elastically abut on the transition support sleeve 16, and when the hook 15 is engaged with the driving rod assembly 40, it slides to The tendency to lock with the matching lock structure 16a.
  • the self-locking assembly 17 further includes a plug 173, the movable armature 14 is provided with a stepped installation space 141 penetrating the side wall of the movable armature 14, the small end of the stepped installation space 141 faces the transition support sleeve 16, and the stepped installation
  • the large end of the space 141 faces the sealing shell 32
  • the locking member 171 is slidably placed in the step installation space 141
  • the locking member 171 also partially protrudes from the small end of the step installation space 141
  • the plug 173 is installed in the step installation space
  • the elastic restoring member 172 elastically abuts between the plug 173 and the locking member 171 .
  • the elastic restoring member 172 is sleeved on the locking member 171 .
  • the locking member 171 is a pin and tongue structure
  • the elastic restoring member 172 is a compression spring to simplify their structures, but not limited thereto.
  • the inner side 111 of the fixed magnetic pole 11 is provided with a movable space 113 for the axial expansion and contraction of the spring 13 .
  • the spring 13 is also sleeved on the transition support sleeve 16, and the second end of the spring 13 elastically contacts the fixed magnetic pole 11, which makes the assembly of the spring 13 more reasonable and compact, and ensures the reliability of the elastic deformation of the spring 13.
  • the spring 13 is a compression spring, but not limited thereto, and may also be other elastic elements.
  • the safety protection device 10 further includes a connecting rod 18 , one end of the connecting rod 18 is hinged with the movable armature 14 , and the connecting rod 18 The other end of the hook is hinged with the hook 15, and the transition support sleeve 16 is provided with an escape space 16b for the hook 15 to pivot or pivot with the driving rod assembly 40.
  • the hook 15 has a large tooth width and a single tooth structure, and the tooth width D2 of the hook 15 is larger than the tooth slot D1 of the drive rod assembly 40 , which can ensure that the safety guard 10 is in operation during operation.
  • the control rod In the process of dropping the control rod, the control rod will not be completely locked, and the adverse effect on the normal operation of the control rod driving mechanism 100 of the present invention can be reduced when the safety protection device 10 is triggered by mistake.
  • the reference numeral 151 is the tooth of the hook 15 .
  • the safety protection device 10 When the reactor swings or even overturns greatly, the safety protection device 10 is in an activated state, and the state is shown in FIG. 2; and in FIG. 2, the locking coil 12 is energized, the fixed magnetic pole 11 is magnetized, and the movable armature 14 is in Under the action of the magnetic force, it slides toward the fixed magnetic pole 11 against the elastic force of the spring 13 , and drives the hook 15 to swing out, so as to realize the clamping and clasping of the driving rod assembly 40 .
  • the locking member 171 When the movable armature 14 is completely attracted by the fixed magnetic pole 11 , the locking member 171 will enter the matching locking structure 16 a of the transition support sleeve 16 under the pushing action of the elastic restoring member 172 .
  • the safety protection device 10 is a structure of normally open when power is off, and closed when power is on. Of course, according to actual needs, it can also be changed to a structure of normally open when power is on, and closed when power is off.
  • the control rod driving mechanism 100 of the present invention includes a safety protection device 10
  • the safety protection device 10 includes a fixed magnetic pole 11, a locking coil 12, a spring 13, a movable armature 14, a hook 15 and a transition support.
  • the outer side 111 of the fixed magnetic pole 11 is installed in the sealing shell 32, the inner side 112 of the fixed magnetic pole 11 is fixedly sleeved with the first end of the transition support sleeve 16, and the second end of the transition support sleeve 16 is assembled and connected with the hook assembly 60
  • the movable armature 13 is axially slidably sleeved on the transition support sleeve 16, one end of the spring 13 is in elastic contact with the movable armature 14, and the other end of the inclined spring 13 is in elastic contact with the fixed magnetic pole 11 or the transition support sleeve 16 , the spring 13 always has a tendency to drive the movable armature 14 to slide in the direction away from the fixed magnetic pole 11, the hook 15 is pivotally mounted on the transition support sleeve 16 and is linked with the movable armature 14, and the driving rod assembly 40 also wears It is placed in the transition support sleeve 16 and the fixed magnetic pole 11; the locking coil 12 is installed
  • the control rod driving mechanism 100 of the present invention is vertically installed on the top cover of the reactor pressure vessel during use.
  • the coil assembly 50 well known in the art includes three yokes 51 and three sets of coils, each set of coils is accommodated and installed by one yoke 51; when the locking coil 12 is installed on the coil assembly 50, a coil assembly is required at this time A magnetic yoke 51 is additionally added to 50 for accommodating and installing the locking coil 12 , so as to realize the purpose of installing the locking coil 12 on the coil assembly 50 .

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  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
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Abstract

一种具有安全防护功能的控制棒驱动机构（100），包括棒位探测器组件(20)、耐压壳组件(30)、钩爪组件(60)、驱动杆组件(40)、线圈组件(50)及安全防护装置(10)。安全防护装置(10)包含固定磁极(11)、锁死线圈(12)、弹簧(13)、可动衔铁(14)、钩爪(15)及过渡支撑套(16)；密封壳(32)借助固定磁极(11)与过渡支撑套(16)固定，过渡支撑套(16)与钩爪组件(60)装配连接；可动衔铁(14)可滑移地套装于过渡支撑套(16)；弹簧(13)一端与可动衔铁(14)弹性抵接，另一端与固定磁极(11)或过渡支撑套(16)弹性抵接；钩爪(15)安装于过渡支撑套(16)并与可动衔铁(14)连动，驱动杆组件(40)穿置于过渡支撑套(16)和固定磁极(11)；锁死线圈(12)安装于线圈组件(50)，可动衔铁(14)在轴向滑移过程中使得钩爪(15)做与驱动杆组件(40)扣合或脱扣的枢摆运动，以具备可靠的安全防护功能，实现反应堆的安全停堆。

Description

具有安全防护功能的控制棒驱动机构 技术领域
本发明涉及核反应堆领域，尤其涉及一种具有安全防护功能的控制棒驱动机构。
背景技术
众所周知，有些反应堆处于周期性摇摆状态等场合中，尤其是在极端的环境条件下，反应堆则会发生大倾角的摇摆，甚至倾翻。
在反应堆小角度摇摆时，反应堆控制棒驱动机构还可以实现控制棒的落棒功能，保证反应堆的安全停堆。但是，当反应堆发生大倾角摇摆甚至倾翻时，已插入堆芯底部的控制棒组件则可能从堆芯中脱出，从而不能保证反应堆的安全停堆。
目前，国内外使用的反应堆控制棒驱动机构没有设置具备倾翻锁死功能的安全防护机构，因此，亟需一种具有安全防护功能的控制棒驱动机构来克服上述的缺陷。
发明内容
本发明的目的在于：提供一种具有安全防护功能的控制棒驱动机构，能在极端环境条件下反应堆发生倾翻后保证将控制棒组件锁死在堆芯中，实现反应堆的安全停堆。
为实现上述目的，本发明的具有安全防护功能的控制棒驱动机构包括安全防护装置、棒位探测器组件、耐压壳组件、钩爪组件、驱动杆组件及线圈组件。所述棒位探测器组件套装于所述耐压壳组件中的行程套管上，所述钩爪组件套装于所述耐压壳组件中的密封壳内，所述驱动杆组件安装于所述密封壳内，所 述驱动杆组件还穿置于所述钩爪组件中并伸向所述行程套管，所述线圈组件套装于所述密封壳外；所述安全防护装置包含固定磁极、锁死线圈、弹簧、可动衔铁、钩爪及过渡支撑套，所述固定磁极的外侧安装于所述密封壳内，所述固定磁极的内侧与所述过渡支撑套的第一端固定套接，所述过渡支撑套的第二端与所述钩爪组件装配连接，所述可动衔铁可轴向滑移地套装于所述过渡支撑套上，所述弹簧的一端与所述可动衔铁弹性抵接，所述倾斜弹簧的另一端与所述固定磁极或过渡支撑套弹性抵接，所述弹簧恒具有驱使所述可动衔铁沿远离所述固定磁极的方向滑移趋势，所述钩爪可枢摆地安装于所述过渡支撑套上并与所述可动衔铁连动，所述驱动杆组件还穿置于所述过渡支撑套和固定磁极中，所述锁死线圈安装于所述线圈组件上，所述可动衔铁在轴向滑移过程中连动所述钩爪做与所述驱动杆组件扣合或脱扣的枢摆运动。
较佳地，所述安全防护装置还包含安装于所述可动衔铁处的自锁组件，所述过渡支撑套设有与所述自锁组件配合锁定的配锁结构，所述可动衔铁在连动所述钩爪与所述驱动杆组件扣合过程中使所述自锁组件与所述配锁结构彼此锁定，以阻挡所述可动衔铁在所述弹簧的弹性力作用下做远离所述固定磁极的方向滑移。
较佳地，所述配锁结构为凹槽。
较佳地，所述凹槽的槽底壁沿远离所述固定磁极的方向朝靠近所述过渡支撑套的中心线倾斜，所述凹槽的槽侧壁具有用于与所述自锁组件阻挡配合的阻挡结构，所述阻挡结构沿远离所述固定磁极之方向位于所述凹槽之槽底壁的前方，所述自锁组件通过与所述阻挡结构的阻挡配合以阻挡所述可动衔铁在所述弹簧的弹性力作用下做远离所述固定磁极的方向滑移。
较佳地，所述自锁组件包含锁定件及弹性复位件，所述锁定件沿交错于所述固定磁极的滑移方向滑设于所述可动衔铁，所述弹性复位件设于所述锁定件与所述可动衔铁之间，所述弹性复位件恒具有驱使所述锁定件滑移至与所述配锁结构相锁定的趋势。
较佳地，所述自锁组件还包含堵头，所述可动衔铁开设有贯穿该可动衔铁之侧壁的台阶安装空间，所述台阶安装空间的小端朝向所述过渡支撑套，所述 台阶安装空间的大端朝向所述密封壳，所述锁定件可滑动地置于所述台阶安装空间内，且所述锁定件还部分地从所述台阶安装空间的小端伸出，所述堵头安装于所述台阶安装空间的大端内，所述弹性复位件弹性地抵接于所述堵头与所述锁定件之间。
较佳地，所述弹性复位件套装于所述锁定件上，所述锁定件为一销舌结构，所述弹性复位件为一压缩弹簧。
较佳地，所述固定磁极的内侧开设有供所述弹簧做轴向伸缩变形的活动空间，所述活动空间朝靠近所述可动衔铁的方向贯穿所述固定磁极，所述弹簧位于所述活动空间内，所述弹簧还套装于所述过渡支撑套上，所述弹簧的第二端与所述固定磁极弹性抵接；所述倾斜磁极的台肩安装于所述密封壳内，所述过渡支撑套的第二端与所述钩爪组件螺纹连接。
较佳地，所述安全防护装置还包含位于所述可动衔铁内的连杆，所述连杆的一端与所述可动衔铁铰接，所述连杆的另一端与所述钩爪铰接，所述过渡支撑套开设有供所述钩爪做与所述驱动杆组件扣合或脱扣枢摆的避让空间。
较佳地，所述钩爪为大齿宽单齿结构，所述钩爪的齿宽大于所述驱动杆组件的齿槽。
为实现上述发明目的，本发明提供了一种安全防护装置，其包括：
密封壳；
驱动杆组件，贯穿设置于所述密封壳中；以及
设置于所述密封壳中的固定磁极和套设于所述驱动杆组件上的可动衔铁，所述可动衔铁连接有钩爪，所述固定磁极和可动衔铁之间设有弹性元件；
其中，所述固定磁极通电磁化时，所述可动衔铁能够在所述固定磁极的磁力作用下，克服所述弹性元件的弹力朝向所述固定磁极滑移，并使得所述钩爪与所述驱动杆组件扣合。
相对于现有技术，本发明安全防护装置中，当驱动杆组件发生摇摆或倾翻时，可对固定磁极通电磁化，此时，可动衔铁能够在固定磁极的磁力作用下，克服弹性元件的弹力朝向固定磁极滑移，可动衔铁的滑移使得钩爪扣合在驱动杆组件上，以将驱动杆组件维持在适当的位置，确保驱动杆组件的安全。
较佳地，安全防护装置进一步包括套设于所述驱动杆组件上的过渡支撑套，所述可动衔铁轴向滑移地套装于所述过渡支撑套上，所述钩爪可枢摆地安装于所述过渡支撑套上并与所述可动衔铁连动。
较佳地，所述可动衔铁设有自锁组件，所述过渡支撑套设有与所述自锁组件配合锁定的配锁结构，所述钩爪与所述驱动杆组件扣合后，所述自锁组件与所述配锁结构彼此锁定。
较佳地，所述配锁结构为凹槽，所述凹槽的侧壁具有用于与所述自锁组件阻挡配合的阻挡结构，所述钩爪与所述驱动杆组件扣合后，所述自锁组件伸入所述凹槽，并通过与所述阻挡结构的阻挡配合，阻挡所述可动衔铁在所述弹性元件的弹力作用下向远离所述固定磁极的方向滑移。
较佳地，所述自锁组件包含锁定件及弹性复位件，所述弹性复位件设于所述锁定件与所述可动衔铁之间，所述弹性复位件驱使所述锁定件弹性抵接于所述过渡支撑套上。
较佳地，所述弹性复位件套装于所述锁定件上，所述锁定件为一销舌结构，所述弹性复位件为一压缩弹簧。
较佳地，所述固定磁极的外侧固定安装于所述密封壳上，所述固定磁极的内侧固定套接于所述过渡支撑套上，所述固定磁极的内侧设有供所述弹性元件轴向伸缩变形的活动空间，所述弹性元件位于所述活动空间内并套装于所述过渡支撑套上。
较佳地，安全防护装置进一步包含连杆，连杆，所述连杆的一端与所述可动衔铁铰接，所述连杆的另一端与所述钩爪铰接，所述过渡支撑套设有供所述钩爪做与所述驱动杆组件扣合枢摆的避让空间。
较佳地，所述密封壳上设有用于磁化所述固定磁极的锁死线圈。
为实现上述发明目的，本发明还提供了一种控制棒驱动机构，其包括棒位探测器组件、设有密封壳的耐压壳组件、钩爪组件、驱动杆组件、线圈组件，以及前述安全防护装置，所述棒位探测器组件套装于所述耐压壳组件中设置的行程套管上，所述驱动杆组件穿置于所述钩爪组件中并伸向所述行程套管，所述钩爪组件套装于所述密封壳内，所述安全防护装置上设置的过渡支撑套与所 述钩爪组件连接，所述锁死线圈套装于所述密封壳外。
与现有技术相比，由于本发明的控制棒驱动机构还包括安全防护装置，而安全防护装置包含固定磁极、锁死线圈、弹簧、可动衔铁、钩爪及过渡支撑套，固定磁极的外侧安装于密封壳内，固定磁极的内侧与过渡支撑套的第一端固定套接，过渡支撑套的第二端与钩爪组件装配连接；可动衔铁可轴向滑移地套装于过渡支撑套上，弹簧的一端与可动衔铁弹性抵接，倾斜弹簧的另一端与固定磁极或过渡支撑套弹性抵接，弹簧恒具有驱使可动衔铁沿远离固定磁极的方向滑移趋势，钩爪可枢摆地安装于过渡支撑套上并与可动衔铁连动，驱动杆组件还穿置于过渡支撑套和固定磁极中；锁死线圈安装于线圈组件上；可动衔铁在轴向滑移过程中连动钩爪做与驱动杆组件扣合或脱扣的枢摆运动；因此，借助固定磁极、锁死线圈、弹簧、可动衔铁、钩爪及过渡支撑套的配合，使得本发明的控制棒驱动机构具备可靠的安全防护功能，在极端的环境条件下反应堆发生倾翻后保证将控制棒组件可靠地锁死在堆芯中，实现反应堆的安全停堆；同时，采用钩爪对驱动杆组件的锁死，这样原理简单，并且结构紧凑；再者，借助过渡支撑套的第一端与固定磁极的内侧固定套接，以及过渡支撑套的第二端与钩爪组件装配连接，再配合固定磁极的外侧安装于密封壳内，这样使得固定磁极、过渡支撑套和钩爪组件形成一个整体；同样，借助锁死线圈安装于线圈组件上，也使锁死线圈与线圈组件形成一个整体而便于安装定位。
附图说明
图1是本发明具有安全防护功能的控制棒驱动机构被局部剖后的结构示意图。
图2是本发明具有安全防护功能的控制棒驱动机构中，安全保护装置、密封壳及驱动杆组件的局部剖视图，其中，钩爪锁死驱动杆组件。
图3是本发明具有安全防护功能的控制棒驱动机构中，安全保护装置、密封壳及驱动杆组件的局部剖视图，其中，钩爪未锁死驱动杆组件。
图4是本发明具有安全防护功能的控制棒驱动机构中，驱动杆组件的局部内部结构示意图。
图5是本发明具有安全防护功能的控制棒驱动机构中，安全保护装置的钩爪的局部内部结构示意图。
具体实施方式
现在参考附图描述本发明的实施例，附图中类似的元件标号代表类似的元件。
请参阅图1和图2，本发明的具有安全防护功能的控制棒驱动机构100包括安全防护装置10、棒位探测器组件20、耐压壳组件30、驱动杆组件40、线圈组件50及钩爪组件60。棒位探测器组件20套装于耐压壳组件30中的行程套管31上，以在本发明的控制棒驱动机构100运行时，用于给出驱动杆组件40的实际位置信号；钩爪组件60套装于耐压壳组件30中的密封壳32内，较优的是悬挂在密封壳32内，用于实现对驱动杆组件40的抓持、提升、下插功能；驱动杆组件40安装于密封壳32内，驱动杆组件40还穿置于钩爪组件60(具体是钩爪组件60所围的空间)中并伸向行程套管31，由行程套管31为驱动杆组件40提供运动行程空间；线圈组件50套装于密封壳32外，用于为钩爪组件60的动作提供动力。
由于线圈组件50、钩爪组件60、驱动杆组件40、棒位探测器组件20及耐压壳组件30的具体结构是本领域所熟知的，故在此不再作详细的描述，而下面将详细描述安全防护装置10。
如图2和图3所示，本发明提供了一种安全防护装置，其包括：
密封壳32；
驱动杆组件40，贯穿设置于密封壳32中；以及
设置于密封壳32中的固定磁极11和套设于驱动杆组件40上的可动衔铁14，可动衔铁14连接有钩爪15，固定磁极11和可动衔铁14之间设有弹性元件；
其中，固定磁极11通电磁化时，可动衔铁14能够在固定磁极11的磁力作用下，克服弹性元件的弹力朝向固定磁极11滑移，并使得钩爪15与驱动杆组件40扣合。
相对于现有技术，本发明安全防护装置中，当驱动杆组件40发生摇摆或倾 翻时，可对固定磁极11通电磁化，此时，可动衔铁14能够在固定磁极11的磁力作用下，克服弹性元件的弹力朝向固定磁极11滑移，可动衔铁14的滑移使得钩爪15扣合在驱动杆组件40上，以将驱动杆组件40维持在适当的位置，确保驱动杆组件40的安全。
继续参照图2和图3所示，根据本发明的一个优选实施方式，安全防护装置10包含固定磁极11、锁死线圈12、弹簧13、可动衔铁14、钩爪15及过渡支撑套16。固定磁极11的外侧111安装于密封壳32内，较优的是借助台肩114安装于密封壳32；固定磁极11的内侧112与过渡支撑套16的第一端固定套接，以使得固定磁极11与过渡支撑套16固定在一起；过渡支撑套16的第二端与钩爪组件60装配连接，较优的是与钩爪组件60螺纹连接，例如但不限于此的与钩爪组件60的提升磁极螺纹连接，以使得过渡支撑套16与钩爪组件60固定在一起，从而使得固定磁极11、过渡支撑套16及钩爪组件60形成一个整体。可动衔铁14可轴向滑移地套装于过渡支撑套16上，使得可动衔铁14可在过渡支撑套16上做轴向滑移。弹簧13的一端与可动衔铁14弹性抵接，倾斜弹簧13的另一端与固定磁极11弹性抵接，当然，倾斜弹簧13的另一端还可与过渡支撑套16弹性抵接，一样能使得弹簧13恒具有驱使可动衔铁14沿远离固定磁极11的方向(即箭头A所指方向)滑移趋势。钩爪15可枢摆地安装于过渡支撑套16上并与可动衔铁14连动，驱动杆组件40还穿置于过渡支撑套16和固定磁极11中。锁死线圈12安装于线圈组件50上，具体是安装于线圈组件50的磁轭51上；且可动衔铁14在轴向滑移过程中连动钩爪15做与驱动杆组件40扣合或脱扣的枢摆运动。
具体地，在图2和图3中，为确保对驱动杆组件40锁死的可靠性，安全防护装置10还包含安装于可动衔铁14处的自锁组件17，过渡支撑套16设有与自锁组件17配合锁定的配锁结构16a，可动衔铁14在连动钩爪15与驱动杆组件40扣合过程中使自锁组件17与配锁结构16a彼此锁定，以阻挡可动衔铁14在弹簧13的弹性力作用下做远离固定磁极11的方向滑移，有效地防止安全防护装置10在对驱动杆组件40进行锁死过程中因锁死线圈12断电时而不再提供锁死功能。举例而言，配锁结构16a为凹槽，较优的是，凹槽为环形凹槽，以便 于配锁结构16a的制造，但不以此为限。
如图2和图3所示，凹槽的槽底壁161沿远离固定磁极11的方向(即箭头A所指方向)朝靠近过渡支撑套16的中心线C倾斜，凹槽的槽侧壁具有用于与自锁组件17阻挡配合的阻挡结构162，阻挡结构162沿远离固定磁极11之方向位于凹槽之槽底壁161的前方，自锁组件17通过与阻挡结构162的阻挡配合以阻挡可动衔铁14在弹簧13的弹性力作用下做远离固定磁极11的方向滑移，更可靠地提高安全防护装置10对驱动杆组件40的锁死效果。
具体地，在图2和图3中，自锁组件17包含锁定件171及弹性复位件172，锁定件171沿交错于固定磁极11的滑移方向滑设于可动衔铁14，弹性复位件172设于锁定件171与可动衔铁14之间，弹性复位件172恒具有驱使锁定件171弹性抵靠在过渡支撑套16上，并在钩爪15与驱动杆组件40扣合时，滑移至与配锁结构16a相锁定的趋势。
更具体地，自锁组件17还包含堵头173，可动衔铁14开设有贯穿该可动衔铁14之侧壁的台阶安装空间141，台阶安装空间141的小端朝向过渡支撑套16，台阶安装空间141的大端朝向密封壳32，锁定件171可滑动地置于台阶安装空间141内，且锁定件171还部分地从台阶安装空间141的小端伸出，堵头173安装于台阶安装空间141的大端内，弹性复位件172弹性地抵接于堵头173与锁定件171之间，较优的是，弹性复位件172套装于锁定件171上。其中，借助堵头173、锁定件171、弹性复位件172及可动衔铁14上开设有的台阶安装空间141，一方面便于自锁组件17于可动衔铁14上的装拆操作，另一方面更可靠地确保自锁组件17在可动衔铁14被固定磁极11完全吸合时自动地与过渡支撑套16上的配锁结构16a相锁合，从而确保钩爪15对驱动杆组件40锁死的可靠性。举例而言，锁定件171为一销舌结构，弹性复位件172为一压缩弹簧，以简化它们的结构，但不以此为限。
如图2和图3所示，固定磁极11的内侧111开设有供弹簧13做轴向伸缩变形的活动空间113，活动空间113朝靠近可动衔铁14的方向贯穿固定磁极11，弹簧13位于活动空间113内，弹簧13还套装于过渡支撑套16上，弹簧13的第二端与固定磁极11弹性抵接，这样使得弹簧13的装配更合理紧凑，且确保 弹簧13弹性形变的可靠性。举例而言，弹簧13为一压缩弹簧，但不以此为限，也可以是其他弹性元件。
如图2和图3所示，为使得可动衔铁14与钩爪15的连动更可靠，安全防护装置10还包含连杆18，连杆18的一端与可动衔铁14铰接，连杆18的另一端与钩爪15铰接，过渡支撑套16开设有供钩爪15做与驱动杆组件40扣合或脱扣枢摆的避让空间16b。举例而言，在图4和图5中，钩爪15为大齿宽单齿结构，钩爪15的齿宽D2大于驱动杆组件40的齿槽D1，能够保证工作时的安全防护装置10在控制棒落棒的过程中不会造成对控制棒完全锁死，并能减少在安全防护装置10误触发时对本发明的控制棒驱动机构100的正常动作时产生不利的影响。其中，在图5，标号151为钩爪15的齿。
以下结合图2和图3所示，对安全保护装置的工作原理进行说明：在本发明的控制棒驱动机构100正常工作时，安全保护装置10不工作，状态见图3所示；此时，锁死线圈12不通电，固定磁极11没有磁力，在弹簧13的推力作用下，可动衔铁14保持在最低位置，从而使得钩爪15保持在不摆出状态，故不对驱动杆组件40产生夹持作用。
当反应堆发生大幅度摇摆甚至倾翻时，则安全保护装置10处于启用状态，状态见图2所示；而在图2中，锁死线圈12通电，固定磁极11被磁化，可动衔铁14在磁力的作用下，克服弹簧13的弹力朝向固定磁极11滑移，并带动钩爪15摆出，实现对驱动杆组件40的夹持、扣合。当可动衔铁14被固定磁极11完全吸合时，锁定件171则会在弹性复位件172的推挤作用下进入过渡支撑套16的配锁结构16a。此时，通过与阻挡结构的阻挡配合，阻挡可动衔铁14在弹簧13的弹力作用下向远离固定磁极11的方向滑移。即使此时断电，钩爪15也始终夹持驱动杆组件40，实现对驱动杆组件40的锁死功能。其中，安全防护装置10是断电常开、通电闭合的结构，当然，根据实际需要，也可以改为通电常开、断电闭合的结构。
与现有技术相比，由于本发明的控制棒驱动机构100包括安全防护装置10，安全防护装置10包含固定磁极11、锁死线圈12、弹簧13、可动衔铁14、钩爪15及过渡支撑套16，固定磁极11的外侧111安装于密封壳32内，固定磁极11 的内侧112与过渡支撑套16的第一端固定套接，过渡支撑套16的第二端与钩爪组件60装配连接；可动衔铁13可轴向滑移地套装于过渡支撑套16上，弹簧13的一端与可动衔铁14弹性抵接，倾斜弹簧13的另一端与固定磁极11或过渡支撑套16弹性抵接，弹簧13恒具有驱使可动衔铁14沿远离固定磁极11的方向滑移趋势，钩爪15可枢摆地安装于过渡支撑套16上并与可动衔铁14连动，驱动杆组件40还穿置于过渡支撑套16和固定磁极11中；锁死线圈12安装于线圈组件50上；可动衔铁14在轴向滑移过程中连动钩爪15做与驱动杆组件40扣合或脱扣的枢摆运动；因此，借助固定磁极11、锁死线圈12、弹簧13、可动衔铁14、钩爪15及过渡支撑套16的配合，使得本发明的控制棒驱动机构100具备可靠的安全防护功能，在极端的环境条件下反应堆发生倾翻后保证将控制棒组件可靠地锁死在堆芯中，实现反应堆的安全停堆；同时，采用钩爪15对驱动杆组件40的锁死，这样原理简单，并且结构紧凑；再者，借助过渡支撑套16的第一端与固定磁极11的内侧112固定套接，以及过渡支撑套16的第二端与钩爪组件60装配连接，再配合固定磁极11的外侧111安装于密封壳32内，这样使得固定磁极11、过渡支撑套16和钩爪组件60形成一个整体；同样，借助锁死线圈12安装于线圈组件50上，也使锁死线圈12与线圈组件50形成一个整体而便于安装定位。
需要说明的是，本发明的控制棒驱动机构100在使用时竖直地安装于反应堆压力容器的顶盖上。同时，本领域熟知的线圈组件50包含三个磁轭51和三组线圈，每组线圈由一个磁轭51所容纳安装；当锁死线圈12安装于线圈组件50上时，此时需要线圈组件50额外增加一个磁轭51，用于容纳安装锁死线圈12，从而实现锁死线圈12安装于线圈组件50上的目的。
以上所揭露的仅为本发明的优选实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明申请专利范围所作的等同变化，仍属本发明所涵盖的范围。

Claims (20)

  1. 一种具有安全防护功能的控制棒驱动机构，包括棒位探测器组件、耐压壳组件、钩爪组件、驱动杆组件及线圈组件，所述棒位探测器组件套装于所述耐压壳组件中的行程套管上，所述钩爪组件套装于所述耐压壳组件中的密封壳内，所述驱动杆组件安装于所述密封壳内，所述驱动杆组件还穿置于所述钩爪组件中并伸向所述行程套管，所述线圈组件套装于所述密封壳外，其特征在于，所述具有安全防护功能的控制棒驱动机构还包括安全防护装置，所述安全防护装置包含固定磁极、锁死线圈、弹簧、可动衔铁、钩爪及过渡支撑套，所述固定磁极的外侧安装于所述密封壳内，所述固定磁极的内侧与所述过渡支撑套的第一端固定套接，所述过渡支撑套的第二端与所述钩爪组件装配连接，所述可动衔铁可轴向滑移地套装于所述过渡支撑套上，所述弹簧的一端与所述可动衔铁弹性抵接，所述弹簧的另一端与所述固定磁极或过渡支撑套弹性抵接，所述弹簧恒具有驱使所述可动衔铁沿远离所述固定磁极的方向滑移趋势，所述钩爪可枢摆地安装于所述过渡支撑套上并与所述可动衔铁连动，所述驱动杆组件还穿置于所述过渡支撑套和固定磁极中，所述锁死线圈安装于所述线圈组件上，所述可动衔铁在轴向滑移过程中连动所述钩爪做与所述驱动杆组件扣合或脱扣的枢摆运动。
  2. 根据权利要求1所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述安全防护装置还包含安装于所述可动衔铁处的自锁组件，所述过渡支撑套设有与所述自锁组件配合锁定的配锁结构，所述可动衔铁在连动所述钩爪与所述驱动杆组件扣合过程中使所述自锁组件与所述配锁结构彼此锁定，以阻挡所述可动衔铁在所述弹簧的弹性力作用下做远离所述固定磁极的方向滑移。
  3. 根据权利要求2所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述配锁结构为凹槽。
  4. 根据权利要求3所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述凹槽的槽底壁沿远离所述固定磁极的方向朝靠近所述过渡支撑套的中心线倾斜，所述凹槽的槽侧壁具有用于与所述自锁组件阻挡配合的阻挡结构，所述阻挡结构沿远离所述固定磁极之方向位于所述凹槽之槽底壁的前方，所述自锁组件通过与所述阻挡结构的阻挡配合以阻挡所述可动衔铁在所述弹簧的弹性力作用下做远离所述固定磁极的方向滑移。
  5. 根据权利要求2所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述自锁组件包含锁定件及弹性复位件，所述锁定件沿交错于所述固定磁极的滑移方向滑设于所述可动衔铁，所述弹性复位件设于所述锁定件与所述可动衔铁之间，所述弹性复位件恒具有驱使所述锁定件滑移至与所述配锁结构相锁定的趋势。
  6. 根据权利要求5所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述自锁组件还包含堵头，所述可动衔铁开设有贯穿该可动衔铁之侧壁的台阶安装空间，所述台阶安装空间的小端朝向所述过渡支撑套，所述台阶安装空间的大端朝向所述密封壳，所述锁定件可滑动地置于所述台阶安装空间内，且所述锁定件还部分地从所述台阶安装空间的小端伸出，所述堵头安装于所述台阶安装空间的大端内，所述弹性复位件弹性地抵接于所述堵头与所述锁定件之间。
  7. 根据权利要求6所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述弹性复位件套装于所述锁定件上，所述锁定件为一销舌结构，所述弹性复位件为一压缩弹簧。
  8. 根据权利要求1所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述固定磁极的内侧开设有供所述弹簧做轴向伸缩变形的活动空间，所述 活动空间朝靠近所述可动衔铁的方向贯穿所述固定磁极，所述弹簧位于所述活动空间内，所述弹簧还套装于所述过渡支撑套上，所述弹簧的第二端与所述固定磁极弹性抵接；所述固定磁极的台肩安装于所述密封壳内，所述过渡支撑套的第二端与所述钩爪组件螺纹连接。
  9. 根据权利要求1所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述安全防护装置还包含位于所述可动衔铁内的连杆，所述连杆的一端与所述可动衔铁铰接，所述连杆的另一端与所述钩爪铰接，所述过渡支撑套开设有供所述钩爪做与所述驱动杆组件扣合或脱扣枢摆的避让空间。
  10. 根据权利要求1所述的具有安全防护功能的控制棒驱动机构，其特征在于，所述钩爪为大齿宽单齿结构，所述钩爪的齿宽大于所述驱动杆组件的齿槽。
  11. 一种安全防护装置，其特征在于，包括：
    密封壳；
    驱动杆组件，贯穿设置于所述密封壳中；以及
    设置于所述密封壳中的固定磁极和套设于所述驱动杆组件上的可动衔铁，所述可动衔铁连接有钩爪，所述固定磁极和可动衔铁之间设有弹性元件；
    其中，所述固定磁极通电磁化时，所述可动衔铁能够在所述固定磁极的磁力作用下，克服所述弹性元件的弹力朝向所述固定磁极滑移，并使得所述钩爪与所述驱动杆组件扣合。
  12. 根据权利要求11所述的安全防护装置，其特征在于，进一步包括套设于所述驱动杆组件上的过渡支撑套，所述可动衔铁轴向滑移地套装于所述过渡支撑套上，所述钩爪可枢摆地安装于所述过渡支撑套上并与所述可动衔铁连动。
  13. 根据权利要求12所述的安全防护装置，其特征在于，所述可动衔铁设 有自锁组件，所述过渡支撑套设有与所述自锁组件配合锁定的配锁结构，所述钩爪与所述驱动杆组件扣合后，所述自锁组件与所述配锁结构彼此锁定。
  14. 根据权利要求13所述的安全防护装置，其特征在于，所述配锁结构为凹槽，所述凹槽的侧壁具有用于与所述自锁组件阻挡配合的阻挡结构，所述钩爪与所述驱动杆组件扣合后，所述自锁组件伸入所述凹槽，并通过与所述阻挡结构的阻挡配合，阻挡所述可动衔铁在所述弹性元件的弹力作用下向远离所述固定磁极的方向滑移。
  15. 根据权利要求13所述的安全防护装置，其特征在于，所述自锁组件包含锁定件及弹性复位件，所述弹性复位件设于所述锁定件与所述可动衔铁之间，所述弹性复位件驱使所述锁定件弹性抵接于所述过渡支撑套上。
  16. 根据权利要求15所述的安全防护装置，其特征在于，所述弹性复位件套装于所述锁定件上，所述锁定件为一销舌结构，所述弹性复位件为一压缩弹簧。
  17. 根据权利要求12所述的安全防护装置，其特征在于，所述固定磁极的外侧固定安装于所述密封壳上，所述固定磁极的内侧固定套接于所述过渡支撑套上，所述固定磁极的内侧设有供所述弹性元件轴向伸缩变形的活动空间，所述弹性元件位于所述活动空间内并套装于所述过渡支撑套上。
  18. 根据权利要求12所述的安全防护装置，其特征在于，进一步包含连杆，所述连杆的一端与所述可动衔铁铰接，所述连杆的另一端与所述钩爪铰接，所述过渡支撑套设有供所述钩爪做与所述驱动杆组件扣合枢摆的避让空间。
  19. 根据权利要求11至18中任一项所述的安全防护装置，其特征在于，所述密封壳上设有用于磁化所述固定磁极的锁死线圈。
  20. 一种控制棒驱动机构，包括棒位探测器组件、设有密封壳的耐压壳组件、钩爪组件、驱动杆组件和线圈组件，所述棒位探测器组件套装于所述耐压壳组件中设置的行程套管上，所述驱动杆组件穿置于所述钩爪组件中并伸向所述行程套管，其特征在于，所述控制棒驱动机构还包括权利要求11至19中任一项所述的安全防护装置，其中，所述钩爪组件套装于所述密封壳内，所述安全防护装置上设置的过渡支撑套与所述钩爪组件连接，所述锁死线圈套装于所述密封壳外。
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CN112582086A (zh) * 2020-12-11 2021-03-30 中广核研究院有限公司 具有安全防护功能的控制棒驱动机构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269192A (zh) * 2014-10-16 2015-01-07 中国科学院合肥物质科学研究院 一种适用于液态金属冷却反应堆的控制落棒执行机构
CN106898388A (zh) * 2017-03-09 2017-06-27 华北电力大学 一种防止反应堆发生弹棒事故的装置
WO2018013872A2 (en) * 2016-07-13 2018-01-18 Ge-Hitachi Nuclear Energy Americas Llc Moveable isolated rod couplings for use in a nuclear reactor control rod drive
CN107665741A (zh) * 2017-11-01 2018-02-06 上海核工程研究设计院有限公司 一种核反应堆用控制棒组件保持和释放结构
CN109830310A (zh) * 2019-01-11 2019-05-31 中广核工程有限公司 船舶反应堆用改进型电磁式控制棒驱动机构
CN110815132A (zh) * 2019-12-10 2020-02-21 上海第一机床厂有限公司 新型堆控制棒驱动机构钩爪组件及装配方法
CN210200327U (zh) * 2019-05-14 2020-03-27 中广核工程有限公司 一种新型耐压壳部件结构及控制棒驱动机构
CN112582086A (zh) * 2020-12-11 2021-03-30 中广核研究院有限公司 具有安全防护功能的控制棒驱动机构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269192A (zh) * 2014-10-16 2015-01-07 中国科学院合肥物质科学研究院 一种适用于液态金属冷却反应堆的控制落棒执行机构
WO2018013872A2 (en) * 2016-07-13 2018-01-18 Ge-Hitachi Nuclear Energy Americas Llc Moveable isolated rod couplings for use in a nuclear reactor control rod drive
CN106898388A (zh) * 2017-03-09 2017-06-27 华北电力大学 一种防止反应堆发生弹棒事故的装置
CN107665741A (zh) * 2017-11-01 2018-02-06 上海核工程研究设计院有限公司 一种核反应堆用控制棒组件保持和释放结构
CN109830310A (zh) * 2019-01-11 2019-05-31 中广核工程有限公司 船舶反应堆用改进型电磁式控制棒驱动机构
CN210200327U (zh) * 2019-05-14 2020-03-27 中广核工程有限公司 一种新型耐压壳部件结构及控制棒驱动机构
CN110815132A (zh) * 2019-12-10 2020-02-21 上海第一机床厂有限公司 新型堆控制棒驱动机构钩爪组件及装配方法
CN112582086A (zh) * 2020-12-11 2021-03-30 中广核研究院有限公司 具有安全防护功能的控制棒驱动机构

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