control rod drive rod unlocking tool

control rod drive rod unlocking tool

  • CN 103,003,888 B
  • Filed: 06/06/2011
  • Issued: 03/29/2017
  • Est. Priority Date: 06/08/2010
  • Status: Active Grant
First Claim
Patent Images

1. a kind of instrument for unlocking the control rod drive rod of nuclear reactor vessel, including:

  • Bearing assembly, the bearing assembly are configured to receive the control rod drive rod, the bearing assembly in its first endWith multiple bolt-lock fingers and at least one pin at its second end at its first end, the bolt-lock refers toEach in shape part can be moved between locked position and unlocked position, wherein, in the locked position, the bolt-lock refers toShape part is configured to the control rod drive rod is engaged and kept when the control rod drive rod is received in the first end,In the unlocked position, the plurality of bolt-lock finger is configured to receive in the first end when the control rod drive rodWhen do not engage the control rod drive rod;

    AndMechanical latch assembly, wherein, the bearing assembly can be moved relative to the bearing assembly with the mechanical latch assemblyDynamic mode is received in the mechanical latch assembly, and the mechanical latch assembly includes the first set at its first endBarrel member and the second sleeve component at its second end, the second sleeve component have at least one reversed J shape groove, instituteState reversed J shape groove and there is Part I, Part II and the mid portion being arranged between Part I and Part II, describedA part has the first terminal portion for including recess, and the Part II has second terminal portion, and the Part II compares firstPart is long, and the reversed J shape groove is located so that the first terminal portion away from first distance of bolt-lock finger, and described second eventuallyEnd away from the bolt-lock finger second distance, second distance than first apart from short,Wherein, at least one pin is movably received at least one reversed J shape groove, wherein, the mechanical bolt-lockComponent can move to released state from latching state with unlocking manner, wherein the mechanical latch assembly is relative to the supportingComponent is slided in the first direction and causes first shroud member to be engaged with each bolt-lock finger, and by each bolt-lockFinger moves to the unlocked position from the locked position, and wherein, the mechanical latch assembly can be with bolt-lock sideFormula moves to the latching state from the released state, wherein the mechanical latch assembly relative to the bearing assembly along withThe contrary second direction of the first direction is slided, and causes first shroud member to connect with each bolt-lock finger mergingAnd each bolt-lock finger is moved to into the locked position from the unlocked position,Wherein in latching state, in the way of the bearing assembly is hung from the mechanical latch assembly, described at least oneThe first terminal portion placement against the reversed J shape groove is sold,Wherein during being moved with the unlocking manner, the mechanical latch assembly is relative to the bearing assembly along the first rotationDirection rotates, and at least one pin moves to the second terminal of the reversed J shape groove from the first terminal portion of the reversed J shape groovePortion,Wherein, during being moved in the bolt-lock mode, the mechanical latch assembly is relative to bearing assembly edge and firstContrary the second direction of rotation rotation in direction of rotation, and during being moved in the bolt-lock mode, at least one pin fromThe second terminal portion of the reversed J shape groove moves to the first terminal portion of the reversed J shape groove,Wherein during being moved with the unlocking manner, the mechanical latch assembly is slided along the second direction first, subsequentlyRotate along first direction of rotation and slide with first direction described in tailing edge,And wherein, during being moved in the bolt-lock mode, the mechanical latch assembly is slided along the second direction first,Slide with the second direction of rotation rotation described in tailing edge and with first direction described in tailing edge,Wherein, the bearing assembly is configured to the top point for optionally grasping and keeping control rod drive rod, and will controlRod drive rod departs from from the support of nuclear reactor vessel,Wherein, the bearing assembly includes the button finger of multiple selectivity movements, and the button finger is configured to graspDepart from from spider-shaped support with the top point for keeping CRDS and by CRDS,Wherein, the button finger is by optionally pneumatic actuation.

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