CN110803612B - Control rod guide cylinder hoisting device and control rod guide cylinder hoisting method - Google Patents
Control rod guide cylinder hoisting device and control rod guide cylinder hoisting method Download PDFInfo
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- CN110803612B CN110803612B CN201910989701.5A CN201910989701A CN110803612B CN 110803612 B CN110803612 B CN 110803612B CN 201910989701 A CN201910989701 A CN 201910989701A CN 110803612 B CN110803612 B CN 110803612B
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- rod
- guide
- flange plate
- cylinder
- hoisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
Abstract
The invention discloses a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method, wherein the control rod guide cylinder hoisting device comprises a hoisting assembly connected with hoisting equipment, a gripping apparatus actuating mechanism used for taking and placing a guide cylinder, and at least one group of connecting rod assemblies connected between the hoisting assembly and the gripping apparatus actuating mechanism; the gripper actuating mechanism comprises a guide rod, a movable rod and an umbrella-shaped supporting gripper, wherein the guide rod is used for extending into the guide cylinder, the movable rod is arranged in the guide rod in a penetrating mode and can move back and forth along the axial direction of the guide rod, and the umbrella-shaped supporting gripper is connected between the guide rod and the movable rod and can be opened and closed along with the movement of the movable rod; when the umbrella-shaped supporting claw is in an open state, a supporting surface which is used for abutting against the lower part of the guide plate in the guide cylinder is formed at the top of the umbrella-shaped supporting claw; when the umbrella-shaped supporting claw is in a closed state, the umbrella-shaped supporting claw is matched on the guide rod along the axial extension of the guide rod. The invention realizes safe, accurate and reliable hoisting operation of the control rod guide cylinder.
Description
Technical Field
The invention relates to the technical field of reactor component assembly, in particular to a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method.
Background
The guide cylinder of the nuclear power plant reactor control rod is a key component of an upper reactor internals and provides positioning, guiding and protecting for the movement of the control rod. Due to long-term relative sliding abrasion in the guide cylinder and corrosion in a high-temperature and high-pressure environment, the guide cylinder can cause the loss of the guide of the control rod, so that the rod falling time is out of tolerance, even the rod clamping event occurs. Once this condition occurs, a new control rod guide cylinder needs to be replaced in time to ensure the power station operates normally in the subsequent cycle.
Due to the particularity of the nuclear power station, the guide cylinder assembly can be replaced only when the nuclear power is shut down, and the guide cylinder lifting and replacing operation at the depth of tens of meters underwater in a reactor pool has poor visual effect, so that the guide cylinder replacing operation time is urgent, the safety requirement is high, the underwater operation difficulty is high, and the like.
Therefore, in order to solve the above technical problems, a hoisting tool which can safely, quickly, accurately and reliably hoist the guide cylinder is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method for realizing safe, accurate and reliable hoisting operation of a reactor control rod guide cylinder.
The technical scheme adopted by the invention for solving the technical problems is as follows: the control rod guide cylinder hoisting device comprises a hoisting assembly, a gripper actuating mechanism and at least one group of connecting rod assemblies, wherein the hoisting assembly is used for being connected with hoisting equipment;
the gripper actuating mechanism comprises a guide rod, a movable rod and an umbrella-shaped supporting gripper, wherein the guide rod is used for extending into the guide cylinder, the movable rod is arranged in the guide rod in a penetrating mode and can move back and forth along the axial direction of the guide rod, and the umbrella-shaped supporting gripper is connected between the guide rod and the movable rod and can be opened and closed along with the movement of the movable rod;
when the umbrella-shaped supporting claw is in an open state, a supporting surface which is used for abutting against the lower part of the guide plate in the guide cylinder is formed at the top of the umbrella-shaped supporting claw;
when the umbrella-shaped supporting claw is in a closed state, the umbrella-shaped supporting claw is matched on the guide rod along the axial extension of the guide rod.
Preferably, the umbrella-shaped supporting and grabbing device comprises at least one group of first supporting rod and second supporting rod which are hinged with each other, one end of the first supporting rod, far away from the second supporting rod, is rotatably connected with the guide rod, and one end of the second supporting rod, far away from the first supporting rod, is rotatably connected with the moving rod;
when the umbrella-shaped supporting claw is in an opening state, the first supporting rod is opened to a horizontal position, and the top surface of the first supporting rod forms the supporting surface; the second support rod is relatively obliquely supported between the first support rod and the movable rod.
Preferably, the guide rod is provided with a slot corresponding to the umbrella-shaped support claw, the umbrella-shaped support claw extends out of the slot when being opened, and is folded in the slot when being closed.
Preferably, the connecting rod assembly comprises a connecting rod, a first flange plate and a second flange plate which are arranged at two opposite ends of the connecting rod, and a plurality of first swing bolts which are distributed along the circumferential direction of the first flange plate and are respectively rotatably connected to the first flange plate through pin shafts;
the hoisting assembly comprises a hoisting flange plate butted with the first flange plate;
the first flange plate is provided with a plurality of first opening holes which are in one-to-one correspondence with the first swing bolts, and the hoisting flange plate is provided with a plurality of hoisting opening holes which are in one-to-one correspondence communication with the first opening holes;
the first flange plate is in butt joint with the hanging flange plate, the first swing bolt is in running fit with the first opening and the hanging opening, and the first flange plate and the hanging flange plate are locked by screwing a first nut on the first swing bolt on the side of the hanging flange plate.
Preferably, the hoisting flange plate and the first flange plate are provided with first positioning assemblies which are matched with each other;
the first positioning component comprises at least two first positioning holes and at least two first positioning pins which are in one-to-one insertion connection with the first positioning holes.
Preferably, the gripper actuating mechanism further comprises an air cylinder, and a first connecting cylinder and a second connecting cylinder which are arranged at two opposite ends of a cylinder barrel of the air cylinder; the first connecting cylinder is connected with the second flange plate, and the second connecting cylinder is connected with the guide rod;
a first end of a piston rod of the air cylinder is telescopic in the first connecting cylinder, and a second end of the piston rod of the air cylinder is telescopic in the second connecting cylinder; the movable rod is connected with the second end of the piston rod and is driven by the piston rod to move back and forth in the guide rod in the axial direction.
Preferably, a third flange plate is arranged at one end of the first connecting cylinder, which is far away from the cylinder, and a plurality of rotatable second swing bolts are arranged on the circumference of the third flange plate;
a plurality of second opening holes are formed in the second flange plate, and a plurality of third opening holes are formed in the third flange plate; the third flange plate is in butt joint with the second flange plate, the second swing bolt is in running fit with the third opening and the second opening, and the third flange plate and the second flange plate are locked by screwing a second nut on the second swing bolt on the side of the second flange plate.
Preferably, the second flange plate and the third flange plate are provided with second positioning assemblies which are matched with each other;
the second positioning assembly comprises at least two second positioning holes and at least two second positioning pins which are in one-to-one insertion connection with the second positioning holes.
Preferably, a guide hole is formed in the side surface of the first connecting cylinder, a pointer penetrating through the guide hole is arranged at the first end of the piston rod, and the pointer moves back and forth along the axial direction of the guide hole along with the extension and retraction of the piston rod.
Preferably, the side surface of the first connecting cylinder is provided with a scale mark extending along the guide hole in the axial direction.
Preferably, the guide rod comprises a guide rod body connected with the second connecting cylinder and a guide end head connected to one end, far away from the second connecting cylinder, of the guide rod body.
Preferably, the guide rod is provided with a backing plate which protrudes out of the periphery of the guide rod in the annular direction and is used for abutting against the upper end face of the guide cylinder.
Preferably, the hoisting assembly comprises a hoisting pipe, a hoisting ring arranged at one end of the hoisting pipe, and a hoisting flange plate arranged at the opposite end of the hoisting pipe and used for being matched and connected with the connecting rod assembly.
Preferably, the hoisting assembly further comprises a reinforcing rib connected to the inner ring of the hoisting ring.
The invention also provides a control rod guide cylinder hoisting method, which uses any one of the control rod guide cylinder hoisting devices; the control rod guide cylinder hoisting method comprises the following steps:
s1, connecting a hoisting device with a hoisting assembly of the control rod guide cylinder hoisting device, and moving the control rod guide cylinder hoisting device to the position above the guide cylinder of the control rod;
s2, inserting a guide rod of the control rod guide cylinder hoisting device into a control rod passage hole of a guide cylinder, wherein an umbrella-shaped support claw of the control rod guide cylinder hoisting device is positioned below a guide plate in the guide cylinder;
s3, operating a moving rod of the control rod guide cylinder hoisting device to enable the moving rod to move upwards along the axial direction of the guide rod, opening the umbrella-shaped supporting claw, wherein the supporting surface of the umbrella-shaped supporting claw is abutted against the lower surface of the guide plate;
s4, the hoisting equipment hoists or lowers the control rod guide cylinder hoisting device, so that the guide cylinder is hoisted or lowered.
The invention has the beneficial effects that: the whole long handle type of the control rod guide cylinder hoisting device can smoothly extend into the guide cylinder through the guide rod, and the safe and firm grabbing of the specific inner guide plate of the guide cylinder is realized through the umbrella-shaped supporting grab, so that the hoisting problem of the reactor in the process of replacing the control rod guide cylinder underwater and remotely is solved, and the risk of radiation of workers is reduced. Meanwhile, due to the design of the hoisting assembly, the hoisting device can be quickly moved by means of on-site hoisting equipment, the labor intensity of workers is reduced, and the working efficiency is improved.
In addition, the flange plates are butted and locked by adopting the rotatable swing bolt, the quick assembly and disassembly of the control rod guide cylinder hoisting device are realized, and the working efficiency is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a control rod guide cylinder hoisting device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a suspension assembly of the control rod guide tube hoist apparatus of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view of a connecting rod assembly of the control rod guide cylinder hoist apparatus of FIG. 1;
FIG. 5 is a top view of the connecting rod assembly of FIG. 4;
FIG. 6 is a schematic diagram of the gripper actuator of the control rod guide tube hoist apparatus of FIG. 1.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the control rod guide cylinder lifting apparatus according to an embodiment of the present invention may include a suspension assembly 100 for coupling with a lifting device, a gripper actuator 300 for picking and placing the guide cylinder, and at least one set of link rod assemblies 200 coupled between the suspension assembly 100 and the gripper actuator 300.
The hoisting assembly 100, the connecting rod assembly 200 and the gripper actuating mechanism 300 are connected in sequence to form the control rod guide cylinder hoisting device which is integrally long-handle type. The control rod guide cylinder is generally structurally comprised of interconnected upper and lower guide assemblies and internally distributed guide plates, each of which is provided with a central through bore forming a control rod passage bore. When the guide cylinder is hoisted, the part of the gripper executing mechanism 300 extends into the guide cylinder, and the guide cylinder is grabbed or lowered through the abutting support of the guide plate at the joint of the upper guide assembly and the lower guide assembly after the gripper executing mechanism reaches the working position. The length of the whole hoisting device can be changed by increasing or decreasing the number of the connecting rod assemblies 200, so that the requirement on the working depth of different nuclear power stations is met.
As shown in fig. 2, the suspension assembly 100 may include a suspension pipe 110, a suspension ring 120 disposed at one end of the suspension pipe 110, and a suspension flange plate 103 disposed at the opposite end of the suspension pipe 110. The length of the drop tube 110 can be set as desired and is made of steel tubing. The suspension ring 120 and the suspension flange plate 130 are fixed to both ends of the suspension pipe 110 by welding.
The lifting ring 120 may be formed by welding a U-shaped bar to a steel plate for passing through a hook or a lifting rope of a lifting apparatus. In order to improve the strength of the hanging ring 120, the hanging assembly 100 further comprises a reinforcing rib 140 connected to the inner ring of the hanging ring 120; the reinforcing ribs 140 may be one or more. Two ends of the reinforcing rib 140 are respectively connected to two opposite inner sides of the U-shaped rod.
The drop flange plate 130 is adapted for mating connection with the connecting rod assembly 200. As shown in fig. 3, the suspension flange plate 130 is provided with a plurality of suspension openings 131 for the swing bolts to fit therein. In this embodiment, four suspension openings 131 are uniformly arranged along the circumferential direction of the suspension flange plate 130. The hanging gap 131 is a U-shaped hole.
As shown in fig. 4 and 5, the connecting rod assembly 200 may include a connecting rod 230, a first flange plate 210 and a second flange plate 220 disposed at opposite ends of the connecting rod 230, and a plurality of first swing bolts 240 circumferentially distributed along the first flange plate 210 and rotatably coupled to the first flange plate 210 by means of pin shafts, respectively.
Both the first flange plate 210 and the second flange plate 220 may be fixed to the connection rod 230 by welding. The first flange plate 210 is provided with a plurality of first openings 211 in one-to-one correspondence with the first swing bolts 240 so that the first swing bolts 240 can be rotated into the first openings 211 with respect to the first flange plate 210. The first openings 211 are also corresponding to the hanging openings 131 of the hanging flange plate 130.
Referring to fig. 1, 2 and 4, after the first flange plate 210 is in fit and butt joint with the hanging flange plate 130, the first swing bolt 240 is rotatably fitted in the first opening 211 and the hanging opening 131, and the first nut is screwed on the first swing bolt 240 at the side of the hanging flange plate 130 to lock the first flange plate 210 and the hanging flange plate 130, so that the quick connection between the hanging assembly 100 and the connecting rod assembly 200 is realized.
Further, the first positioning assemblies matched with each other are arranged on the hanging flange plate 130 and the first flange plate 210, so that the hanging flange plate 130 and the first flange plate 210 are quickly centered.
Alternatively, as shown in fig. 3 to 5, the first positioning assembly may include at least two first positioning holes 410, and at least two first positioning pins 420 inserted into the first positioning holes 410 one by one. In this embodiment, two first positioning holes 410 are disposed on the hanging flange plate 130, and the two first positioning holes 410 are disposed at an oblique angle, that is, the connection line between the two first positioning holes is on the diameter of the hanging flange plate 130. Correspondingly, two first positioning pins 420 are provided on the first flange plate 210, and the two first positioning pins 420 are also arranged at an oblique angle. When the hanging flange plate 130 is butted with the first flange plate 210, the first positioning pin 420 is inserted into the first positioning hole 410 in an aligned manner, and the hanging opening 131 and the first opening 211 are butted one to one.
In other embodiments, the positions of the first positioning pin 420 and the first positioning hole 410 may be reversed. Alternatively, the first positioning hole 410 and the first positioning pin 420 are simultaneously provided on the hanging flange plate 130, and the first positioning pin 420 and the first positioning hole 410 are correspondingly provided on the first flange plate 210.
The second flange plate 220 is provided with a plurality of second openings 221 for the passage of swing bolts. The second openings 221 are uniformly distributed along the circumferential direction of the second flange plate 220, and are in one-to-one correspondence with the first openings 211 on the first flange plate 210.
The connecting rod assembly 200 may be a standard component in its entirety, and the overall length thereof may be increased or decreased depending on the length of the connecting rod 230. In the hoisting device, when the connecting rod assemblies 200 are in one group, the second flange plate 220 is butted with the gripper actuating mechanism 300; when the number of the link assemblies 200 is two or more, the second flange plate 220 of the previous link assembly 200 is abutted against the first flange plate 210 of the next adjacent link assembly 200, and the second flange plate 220 of the last link assembly 200 is abutted against the gripper actuator 300.
As shown in fig. 1 and 6, the gripper actuator 300 includes a guide rod 310 extending into the guide cylinder, a movable rod 320 passing through the guide rod 310 and being movable back and forth along the axial direction of the guide rod 310, and an umbrella-shaped gripper 330 connected between the guide rod 310 and the movable rod 320 and being opened and closed along with the movement of the movable rod 320.
When the umbrella-shaped supporting claw 330 is in an open state, the top of the umbrella-shaped supporting claw facing the direction of the hanging component 100 forms a supporting surface for abutting against the lower part of the guide plate in the guide cylinder, and at the moment, the guide cylinder can be hung by hanging the whole hoisting device. When the umbrella-shaped supporting claw 330 is in a closed state, it is fitted on the guide rod 310 in an extending manner along the axial direction of the guide rod 310, and at this time, the whole lifting device can be moved out of the guide cylinder.
The umbrella-shaped supporting grip 330 may include at least one set of a first pole 331 and a second pole 332 hinged to each other. The end of the first rod 331 far from the second rod 332 is rotatably connected to the guide rod 310, and the second rod 332 is located on the side of the first rod 331 far from the connecting rod assembly 200, and the end of the first rod 331 far from the first rod 331 is rotatably connected to the movable rod 320. When the moving rod 320 moves axially relative to the guide rod 310, the second rod 332 and the first rod 331 are driven to rotate to open and close.
When the umbrella-shaped supporting claw 330 is in an open state, the first supporting rod 331 is opened to a horizontal position (vertical to the axial direction of the guide rod 310), and the top surface of the first supporting rod 331 forms a supporting surface; the second strut 332 is supported between the first strut 331 and the moving bar 320 at a relatively inclined angle. When the umbrella shaped grip 330 is in the closed state, the first rod 331 and the second rod 332 rotate relatively to be in a straight line, and are gathered on or in the guide rod 310.
As shown in FIG. 6, in this embodiment, the umbrella shaped clasp 330 includes two sets of first and second struts 331 and 332 that are hingedly connected and are located on opposite sides of the guide rod 310.
In order to ensure that the smooth passing of the guide rod in the control rod passage hole of the guide cylinder is not influenced after the umbrella-shaped supporting claw 330 is closed, the guide rod 310 is provided with a slot 311 corresponding to the umbrella-shaped supporting claw 330, the umbrella-shaped supporting claw 330 extends out of the slot 311 when being opened and is furled in the slot 311 when being closed.
The guide rod 310 includes a guide rod body 312, and a guide tip 313 connected to one end of the guide rod body 312. The travel bar 320 is in the guide bar body 312 and the umbrella shaped catches 330 are connected between the guide bar body 312 and the travel bar 320. The guide tip 313 has a conical or spherically tapered configuration and guides the guide rod 310 into the control rod passage hole of the guide cylinder. Under the conditions of poor moving precision of the on-site hoisting equipment and poor visual effect of underwater operation, the guide end 313 can realize automatic guide positioning of a control rod passage hole at the upper end of the guide cylinder, and the hoisting device can be ensured to be rapidly and smoothly inserted into the guide cylinder.
The guide rod 310 is provided with a backing plate 314 which is annularly protruded out of the periphery of the guide rod 310 and is used for abutting against the upper end surface of the guide cylinder. The umbrella shaped catch 330 is located on the side of the backing plate 314 facing away from the connector rod assembly 200 (below the backing plate 314 as shown in fig. 6). The backing plate 314 is made of a flexible material, such as rubber, so that the backing plate abuts against the upper end surface of the guide cylinder without causing problems such as abrasion to the upper end surface.
Further, the gripper actuator 300 further comprises an air cylinder 340, a first connecting cylinder 350 and a second connecting cylinder 360 disposed on opposite ends of the cylinder of the air cylinder 340. The first connecting cylinder 350 and the second connecting cylinder 360 are fixed relative to the cylinder, the first connecting cylinder 350 is connected with the second flange plate 220, the second connecting cylinder 360 is connected with the guide rod 310 (the guide rod body 312 of the guide rod 310), and the guide end 313 of the guide rod 310 is connected to one end of the guide rod body 312, which is far away from the second connecting cylinder 360.
The backing plate 314 is coupled between the second connector barrel 360 and the guide bar 312. When the hoisting device extends into the guide cylinder, the guide rod 310 and the like below the backing plate 314 extend into the guide cylinder, the backing plate 314 abuts against the upper end face of the guide cylinder to play a limiting role, and the air cylinder 340 is located outside the guide cylinder.
The piston rod of the cylinder 340 is telescopically movable relative to the first connecting cylinder 350 and the second connecting cylinder 360. Wherein a first end of the piston rod is telescoped within the first connector barrel 350 and a second end is telescoped within the second connector barrel 360. The moving rod 320 is connected to the second end of the piston rod, and moves back and forth in the guide rod 310 axially under the driving of the piston rod, thereby opening or closing the umbrella-shaped supporting grip 330.
In order to know the axial moving stroke of the piston rod driving the moving rod 320, a guide hole (not shown) is formed in the side surface of the first connecting cylinder 350, a pointer 370 penetrating through the guide hole is formed at the first end of the piston rod, and the pointer 370 moves back and forth along the guide hole axially along with the expansion of the piston rod. The axial moving distance of the moving rod 320 can be known by the axial moving distance of the pointer 370 in the guide hole, so as to obtain whether the umbrella-shaped supporting claw 330 is opened or closed, and realize the opening and closing indication function of the umbrella-shaped supporting claw 330.
Further, scale marks may be provided on the side surface of the first connecting cylinder 350, the scale marks extending in the guide hole axial direction. The moving distance of the moving rod 320 is visually obtained by the scale line corresponding to the position of the pointer 370 in the guide hole.
A third flange plate 351 is arranged at one end of the first connecting cylinder 350 far away from the air cylinder 340 and is used for being butted with the second flange plate 220 of the connecting rod assembly 200. A plurality of second swing bolts 352 are rotatably provided on the third flange plate 351 in the circumferential direction. The third flange plate 351 is further provided with a plurality of third cutouts 353 corresponding to the plurality of second swing bolts 352 one to one, so that the second swing bolts 352 can be rotated into the third cutouts 353 with respect to the third flange plate 351. The plurality of third apertures 353 also correspond to the plurality of second apertures 221 one-to-one.
With reference to fig. 1 and 6, after the third flange plate 351 and the second flange plate 220 are in fit and butt joint, the second swing bolt 352 is in rotational fit in the third opening 353 and the second opening 221, and is screwed on the second swing bolt 352 at the side of the second flange plate 220 through the second nut, so that the third flange plate 351 and the second flange plate 220 are locked, and the quick connection between the connecting rod assembly 200 and the gripper actuating mechanism 300 is realized.
Further, the second flange plate 220 and the third flange plate 351 are provided with second positioning assemblies which are matched with each other, so that the second flange plate 220 and the third flange plate 351 can be quickly centered.
The second positioning assembly may include at least two second positioning holes (not shown), and at least two second positioning pins 430 inserted into the second positioning holes one by one. Alternatively, the second positioning hole may be disposed on the second flange plate 220, and the second positioning pin 430 is correspondingly disposed on the third flange plate 351; or, the second positioning hole is disposed on the third flange plate 351, and the second positioning pin 430 is correspondingly disposed on the second flange plate 220; alternatively, the second positioning holes and the second positioning pins 430 are simultaneously disposed on the second flange plate 220, and the second positioning pins 430 and the second positioning holes are correspondingly disposed on the third flange plate 351.
The control rod guide cylinder hoisting method uses the control rod guide cylinder hoisting device. Referring to fig. 1-6, the control rod guide cylinder hoisting method may include the steps of:
and S1, connecting the hoisting equipment with the hoisting assembly 100 of the control rod guide cylinder hoisting device, and moving the control rod guide cylinder hoisting device to the position above the guide cylinder of the control rod.
S2, inserting the guide rod 310 of the control rod guide cylinder hoisting device into the control rod passage hole of the guide cylinder, and the umbrella-shaped support 330 of the control rod guide cylinder hoisting device is positioned below a guide plate in the guide cylinder.
The guide rod 310 is guided by the guide tip 313 at the end thereof to be smoothly inserted into the guide cylinder from the upper end surface thereof, and the umbrella-shaped supporting claw 330 on the guide rod 310 is also driven to enter and pass through the control rod passage hole until the umbrella-shaped supporting claw 330 extends below the guide plate of the guide cylinder located at the joint of the lower guide assembly and the upper guide assembly.
S3, the moving rod 320 of the control rod guide cylinder hoisting device is operated to move the moving rod 320 upward along the axial direction of the guide rod 310, the umbrella-shaped supporting claw 330 is opened, and the supporting surface of the umbrella-shaped supporting claw 330 abuts against the lower surface of the guide plate.
Specifically, cylinder 340 is activated and the piston rod begins a telescoping motion. The piston rod moves upward (toward the upper end surface of the guide cylinder) to drive the movable rod 320 to move in the same direction, so that the umbrella-shaped supporting claw 330 is opened, and the supporting surface of the umbrella-shaped supporting claw is supported and abutted against the lower surface of the guide plate.
And S4, hoisting or lowering the control rod guide cylinder hoisting device by the hoisting equipment so as to hoist or lower the guide cylinder.
After the umbrella-shaped supporting claw 330 is completely opened in the step S3, the hoisting device can perform the hoisting operation of the guide cylinder, such as hoisting the guide cylinder away from or into the reactor pool.
After the hoisting operation is completed, the cylinder 340 acts again to drive the movable rod 320 to move downwards, so that the umbrella-shaped supporting claw 330 is closed and folded, and the hoisting device can be hoisted away from the guide cylinder by the hoisting equipment.
In the above steps, in order to ensure whether the umbrella-shaped gripper 330 is in the fully opened state or the closed state, the position of the scale mark where the pointer 370 at the upper end of the cylinder 340 is located can be observed by the underwater camera.
In conclusion, the hoisting device disclosed by the invention can reduce the labor intensity of field workers, simplify the complexity and operation difficulty of guide cylinder replacement operation, improve the safety and reliability of operation and improve the working efficiency.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A control rod guide cylinder hoisting device is characterized by comprising a hoisting assembly connected with hoisting equipment, a gripper actuating mechanism used for taking and placing a guide cylinder, and at least one group of connecting rod assemblies connected between the hoisting assembly and the gripper actuating mechanism;
the gripper actuating mechanism comprises a guide rod, a movable rod and an umbrella-shaped supporting gripper, wherein the guide rod is used for extending into the guide cylinder, the movable rod is arranged in the guide rod in a penetrating mode and can move back and forth along the axial direction of the guide rod, and the umbrella-shaped supporting gripper is connected between the guide rod and the movable rod and can be opened and closed along with the movement of the movable rod;
when the umbrella-shaped supporting claw is in an open state, a supporting surface which is used for abutting against the lower part of the guide plate in the guide cylinder is formed at the top of the umbrella-shaped supporting claw;
when the umbrella-shaped supporting claw is in a closed state, the umbrella-shaped supporting claw is matched on the guide rod in a stretching way along the axial direction of the guide rod;
the connecting rod assembly comprises a connecting rod, a first flange plate and a second flange plate which are arranged at two opposite ends of the connecting rod, and a plurality of first swing bolts which are distributed along the circumferential direction of the first flange plate and are respectively rotatably connected to the first flange plate through pin shafts;
the gripper actuating mechanism further comprises an air cylinder, a first connecting cylinder and a second connecting cylinder, wherein the first connecting cylinder and the second connecting cylinder are arranged at two opposite ends of a cylinder barrel of the air cylinder; the first connecting cylinder is connected with the second flange plate, and the second connecting cylinder is connected with the guide rod;
a first end of a piston rod of the air cylinder is telescopic in the first connecting cylinder, and a second end of the piston rod of the air cylinder is telescopic in the second connecting cylinder; the moving rod is connected with the second end of the piston rod and axially moves back and forth in the guide rod under the driving of the expansion and contraction of the piston rod;
the side surface of the first connecting cylinder is provided with a guide hole, the first end of the piston rod is provided with a pointer penetrating through the guide hole, and the pointer moves back and forth along the axial direction of the guide hole along with the extension and retraction of the piston rod.
2. The control rod guide tube hoist device of claim 1, wherein the umbrella-shaped support catch comprises at least one set of first and second hinged struts, an end of the first strut remote from the second strut being rotatably connected to the guide rod, an end of the second strut remote from the first strut being rotatably connected to the travel bar;
when the umbrella-shaped supporting claw is in an opening state, the first supporting rod is opened to a horizontal position, and the top surface of the first supporting rod forms the supporting surface; the second support rod is relatively obliquely supported between the first support rod and the movable rod.
3. The control rod guide cylinder hoisting device as set forth in claim 2, wherein the guide rod is provided with a slot corresponding to the umbrella-shaped grapple, the umbrella-shaped grapple extending out of the slot when opened and retracting in the slot when closed.
4. The control rod guide tube hoist device of claim 1, wherein the hangoff assembly includes a hangoff flange plate that interfaces with the first flange plate;
the first flange plate is provided with a plurality of first opening holes which are in one-to-one correspondence with the first swing bolts, and the hoisting flange plate is provided with a plurality of hoisting opening holes which are in one-to-one correspondence communication with the first opening holes;
the first flange plate is in butt joint with the hanging flange plate, the first swing bolt is in running fit with the first opening and the hanging opening, and the first flange plate and the hanging flange plate are locked by screwing a first nut on the first swing bolt on the side of the hanging flange plate.
5. The control rod guide tube hoisting device as set forth in claim 4, wherein the hoisting flange plate and the first flange plate are provided with first positioning assemblies that are engaged with each other;
the first positioning component comprises at least two first positioning holes and at least two first positioning pins which are in one-to-one insertion connection with the first positioning holes.
6. The control rod guide cylinder hoisting device as set forth in claim 1, wherein a third flange plate is provided on an end of the first connecting cylinder remote from the cylinder, and a plurality of second rotatable swing bolts are provided circumferentially on the third flange plate;
a plurality of second opening holes are formed in the second flange plate, and a plurality of third opening holes are formed in the third flange plate; the third flange plate is in butt joint with the second flange plate, the second swing bolt is in running fit with the third opening and the second opening, and the third flange plate and the second flange plate are locked by screwing a second nut on the second swing bolt on the side of the second flange plate.
7. The control rod guide cylinder hoisting device as set forth in claim 6, wherein the second flange plate and the third flange plate are provided with a second positioning assembly which are engaged with each other;
the second positioning assembly comprises at least two second positioning holes and at least two second positioning pins which are in one-to-one insertion connection with the second positioning holes.
8. The control rod guide cylinder hoisting device as set forth in claim 1, wherein the first connecting cylinder is provided on a side surface thereof with graduation marks extending in the axial direction of the guide hole.
9. The control rod guide cylinder hoist apparatus of claim 1, wherein the guide rod comprises a guide rod body connected to the second connector, a guide tip connected to an end of the guide rod body remote from the second connector.
10. The control rod guide cylinder hoisting device as set forth in any one of claims 1 to 9, wherein the guide rod is provided with a backing plate circumferentially protruding from the outer periphery of the guide rod for abutting against the upper end surface of the guide cylinder.
11. The control rod guide tube hoisting device as set forth in any one of claims 1 to 9, wherein the hoisting assembly comprises a hoisting tube, a hoisting ring disposed at one end of the hoisting tube, and a hoisting flange plate disposed at an opposite end of the hoisting tube for mating connection with the connecting rod assembly.
12. The control rod guide tube hoist device of claim 11, wherein the hoist assembly further comprises a stiffener attached to the inner ring of the eye.
13. A control rod guide cylinder hoisting method characterized by using the control rod guide cylinder hoisting apparatus according to any one of claims 1 to 12; the control rod guide cylinder hoisting method comprises the following steps:
s1, connecting a hoisting device with a hoisting assembly of the control rod guide cylinder hoisting device, and moving the control rod guide cylinder hoisting device to the position above the guide cylinder of the control rod;
s2, inserting a guide rod of the control rod guide cylinder hoisting device into a control rod passage hole of a guide cylinder, wherein an umbrella-shaped support claw of the control rod guide cylinder hoisting device is positioned below a guide plate in the guide cylinder;
s3, operating a moving rod of the control rod guide cylinder hoisting device to enable the moving rod to move upwards along the axial direction of the guide rod, opening the umbrella-shaped supporting claw, wherein the supporting surface of the umbrella-shaped supporting claw is abutted against the lower surface of the guide plate;
s4, the hoisting equipment hoists or lowers the control rod guide cylinder hoisting device, so that the guide cylinder is hoisted or lowered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989701.5A CN110803612B (en) | 2019-10-17 | 2019-10-17 | Control rod guide cylinder hoisting device and control rod guide cylinder hoisting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910989701.5A CN110803612B (en) | 2019-10-17 | 2019-10-17 | Control rod guide cylinder hoisting device and control rod guide cylinder hoisting method |
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| CN110803612A CN110803612A (en) | 2020-02-18 |
| CN110803612B true CN110803612B (en) | 2021-08-27 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2417828A1 (en) * | 1978-02-17 | 1979-09-14 | Framatome Sa | TOOL FOR PERMUTATION AND TRANSPORT OF IRRADIATION CAPSULES OF A NUCLEAR REACTOR |
| CN101740148B (en) * | 2008-11-20 | 2012-01-25 | 中国核电工程有限公司 | Gripper for irradiation sample of nuclear power plant |
| CN202454292U (en) * | 2011-11-15 | 2012-09-26 | 中国广东核电集团有限公司 | Lifting grab for controlling rod of pressurized water reactor nuclear power station reactor |
| CN104916338A (en) * | 2014-03-13 | 2015-09-16 | 江苏核电有限公司 | Control rod grabbing mechanism for nuclear power station |
| CN209401334U (en) * | 2018-12-21 | 2019-09-17 | 核动力运行研究所 | A kind of coordinated type resistance plug assembly gripping apparatus |
| CN110176321B (en) * | 2019-06-19 | 2023-03-21 | 中广核研究院有限公司 | Method and device for replacing guide cylinder of reactor control rod |
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