CN118136298A - A method for disassembling and opening the cover of a radioactive rod bundle to take out the rods - Google Patents

Abstract

The present invention discloses a method for dismantling a radioactive rod bundle, opening the cover and taking out the rods, comprising: step 1, placing the rod bundle rack into a positioning mechanism for support and positioning; step 2, limiting the gland of the rod bundle rack by a gland displacement mechanism, so that the gland cannot rotate; step 3, driving the main body of the rod bundle rack to rotate relative to the gland by a rotating mechanism, so that the gland changes from a locked state to a loosened state; step 4, clamping the rod bundle rack by a clamping mechanism; step 5, ejecting the radioactive metal rods and gland on the rod bundle rack by a lifting mechanism. The present invention realizes the opening and rod taking actions of the rod bundle rack by structures such as a positioning mechanism, a rotating mechanism, a gland displacement mechanism, a clamping mechanism, and a lifting mechanism, and has high work efficiency, automation, and safety.

Description

A method for disassembling and opening the cover of a radioactive rod bundle to take out the rods

Technical Field

The invention relates to the field of nuclear industry, and more specifically to a method for dismantling, opening and taking out radioactive rod bundles.

Background technique

A rod cluster rack is a mechanism for installing radioactive metal rods, which includes a bottom plate, a top plate, a center tube connected between the bottom plate and the top plate, and a pressure cover rotatably embedded in the top plate. A number of radioactive metal rods are installed between the bottom plate and the top plate. The top plate also has a number of separation holes corresponding to the radioactive metal rods one by one. The pressure cover covers these through holes and can be removed by rotating the pressure cover to take out the radioactive metal rods. The current existing technology lacks a device that can automatically and efficiently complete the opening of the cover and the removal of the rods.

Based on the above problems, the applicant proposes a method for disassembling a radioactive rod bundle and taking out the rods.

Summary of the invention

In order to overcome the above defects of the prior art, an embodiment of the present invention provides a method to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A method for disassembling a radioactive rod bundle, opening the cover and taking out the rods, comprising:

Step 1, placing the rod bundle rack into the positioning mechanism for support and positioning;

Step 2, limiting the gland of the rod bundle rack by the gland displacement mechanism so that the gland cannot rotate;

Step 3, driving the main body of the rod bundle rack to rotate relative to the gland through the rotating mechanism, so that the gland changes from a locked state to a loosened state;

Step 4, clamping the rod bundle rack by a clamping mechanism;

Step 5: eject the radioactive metal rods and glands on the rod bundle rack through the lifting mechanism.

Furthermore, the step 1 also includes: after the rod cluster rack is placed into the positioning mechanism, the lower limit assembly of the rotating mechanism is rotated so that the lower limit assembly is plugged into the lower through hole on the bottom plate of the rod cluster rack.

Furthermore, step 1 also includes: driving the rod cluster rack to rotate through the rotating mechanism, identifying the radioactive metal rods on the rod cluster rack through the radioactive metal rod identification mechanism, and when the radioactive metal rod identification mechanism identifies the radioactive metal rods, the rotating mechanism stops driving the rod cluster rack to rotate, so that the top rods and the reflective metal rods correspond one to one.

Furthermore, step 3 also includes: after the gland is changed from a locked state to a loosened state, the gland displacement mechanism is reset, and then the rod cluster rack is driven to rotate by the rotating mechanism, and the radioactive metal rod on the rod cluster rack is identified by the radioactive metal rod identification mechanism. When the radioactive metal rod identification mechanism identifies the radioactive metal rod, the rotating mechanism stops driving the rod cluster rack to rotate, thereby determining the placement angle of the rod cluster rack.

Furthermore, the radioactive rod bundle disassembly, cover opening and rod taking method is implemented by a radioactive rod bundle disassembly and cover opening device, and the radioactive rod bundle disassembly and cover opening device comprises:

A positioning mechanism, the positioning mechanism is used to support and position the rod cluster rack;

A rotating mechanism, the rotating mechanism is used to rotate the rod cluster rack;

A gland displacement mechanism, the gland displacement mechanism is used to limit the gland of the rod cluster rack;

A clamping mechanism, the clamping mechanism is used to clamp the rod cluster rack; and

A lifting mechanism is used to push out the radioactive metal rods and the gland on the rod cluster rack.

Furthermore, the positioning mechanism includes a support seat and a positioning cylinder arranged on the support seat, the support seat is used to support the rod cluster rack, and the positioning cylinder is used to surround the rod cluster rack.

Further, the rotating mechanism includes a lower limit assembly and a rotating drive assembly for driving the lower limit assembly to rotate, and the lower limit assembly is used to cooperate with the bottom plate of the rod cluster rack so that the rod cluster rack can rotate with the rotation of the lower limit assembly;

The lower limit assembly includes at least one lower limit member, which is an elastic pin that is plugged into a lower through hole on the bottom plate of the rod cluster rack.

Furthermore, the gland displacement mechanism includes an upper limit assembly and a lifting drive assembly for driving the upper limit assembly to lift and lower, and the upper limit assembly is used to cooperate with the gland of the rod bundle rack to limit the gland so that the gland cannot rotate;

The gland displacement mechanism further comprises a flip assembly, the flip assembly is installed to drive the upper limit assembly to flip, and the lifting drive assembly drives the flip assembly to lift together with the upper limit assembly;

The upper limit assembly includes at least one upper limit piece, and the upper limit piece is plugged into a slot on the gland of the rod cluster rack.

Further, the clamping mechanism clamps the bottom plate of the rod cluster rack from the side, and comprises two clamping jaws and a clamping drive assembly for driving the two clamping jaws to approach and separate;

The lifting mechanism comprises a lifting rod for lifting the radioactive metal rod and a lifting driving assembly for driving the lifting of the lifting rod.

Furthermore, the radioactive rod bundle disassembly and cover opening device further comprises a radioactive metal rod identification mechanism, and the radioactive metal rod identification mechanism is used to identify the radioactive metal rods on the rod bundle rack.

Compared with the prior art, the present invention has the following beneficial effects: the present invention realizes the opening and rod taking actions of the rod bundle rack through the positioning mechanism, the rotating mechanism, the cover displacement mechanism, the clamping mechanism, the lifting mechanism and other structures, and the work is efficient, automated and safe.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the rod bundle rack structure;

Figure 2 is a second schematic diagram of the rod bundle frame structure;

FIG3 is a schematic diagram of the exploded structure of the rod bundle rack;

FIG4 is a schematic diagram of a gland structure in a rod bundle rack;

FIG5 is a second schematic diagram of the gland structure in the rod bundle rack;

Figure 6 is a schematic diagram of the bottom plate structure of the rod bundle rack;

Fig. 7 is a flow chart of the present invention;

FIG8 is a schematic diagram of the structure of the radioactive rod bundle disassembly and cover opening device of the present invention;

FIG9 is a schematic diagram of the structure of the radioactive rod bundle disassembly and cover opening device of the present invention when removing some penetration pieces;

FIG10 is a second schematic diagram of the structure of the radioactive rod bundle disassembly and cover opening device of the present invention when removing some penetration pieces;

FIG11 is a schematic diagram of the structure of the clamping mechanism and the lifting mechanism in the radioactive rod bundle disassembly and cover opening device of the present invention;

FIG12 is an enlarged view of point A in FIG11;

FIG13 is a schematic diagram of the connection structure between the lifting mechanism and the support seat in the radioactive rod bundle disassembly and cover opening device of the present invention;

FIG14 is a schematic diagram of the connection structure of the support base, the lifting mechanism and part of the rotating mechanism of the radioactive rod bundle disassembly and cover opening device of the present invention;

FIG15 is a schematic diagram of the structure of the cover displacement mechanism of the radioactive rod bundle disassembly and cover opening device of the present invention;

FIG16 is a second schematic diagram of the structure of the cover pressing and displacement mechanism of the radioactive rod bundle disassembly and cover opening device of the present invention;

17 is a schematic diagram showing the positional relationship between the metal plate identification mechanism body, the push rod, and the lower limit member of the radioactive rod bundle disassembly and cover opening device in the present invention.

In the figure: support seat 1, positioning cylinder 2, base 3, rotating mechanism 4, lower limit member 400, center pin 401, main shaft 402, gear transmission structure 403, transmission box 404, through-piece 405, gland displacement mechanism 5, upper limit member 500, cantilever 501, rotating seat 502, lifting slide 503, support frame 504, vertical slide rail 505, connecting seat 506, lifting drive 507, flip drive 508, clamping mechanism 6, clamping claw 600, clamping drive assembly 601, lifting mechanism 7, ejector rod 700, lifting drive assembly 701, ring installation Plate 702, radioactive metal rod identification mechanism 8, radioactive metal rod identification mechanism 8, metal plate identification mechanism body 800, identification mechanism mounting frame 801, identification mechanism moving driver 802, identification mechanism driver mounting seat 803, rod cluster frame 9, top plate 900, upper through hole 9000, annular slide groove 9001, arc groove 9002, separation hole 9003, step 9004, bottom plate 901, lower through hole 9010, lifting hole 9011, center tube 902, pressure cover 903, slot 9030, sliding protrusion 9031, radioactive metal rod 904.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in FIGS. 1 to 6 , the rod cluster rack 9 includes a top plate 900 , a bottom plate 901 , a center tube 902 and a cover plate 903 . The top plate 900 and the bottom plate 901 are arranged opposite to each other up and down, and the centers of the two are connected by the center tube 902 . A plurality of upper through holes 9000 are evenly distributed on the top plate 900 .

As shown in Figures 4 and 5, an annular groove 9001 is set on the upper surface of the top plate 900, and four arc grooves 9002 corresponding to the position of the annular groove 9001 are evenly distributed on the lower surface, and the two are connected from top to bottom. The width of the annular groove 9001 is smaller than the width of the arc groove 9002. Therefore, a step 904 is formed between the two. A separation hole 9003 is set at one end of the arc groove 9001. The separation hole 9003 passes upward to the upper surface of the top plate 900, and the diameter of the separation hole 9003 is larger than the width of the arc groove 9001.

As shown in FIG3 , the gland 903 is an annular structure, and its outer diameter and inner diameter match the annular groove 9001. Four groups of sliding protrusions 9031 are evenly distributed on the gland 903, and each group of sliding protrusions 9031 is respectively arranged on the inner and outer walls of the gland 903 to form a butterfly structure, and the thickness of the sliding protrusion 9031 is about half of the gland 903, so that the top height of the sliding protrusion 9031 is lower than the top height of the main body of the gland 903. Six slots 9030 are also evenly distributed on the gland 903.

As shown in FIG. 6 , six lower through holes 9010 are evenly distributed on the bottom plate 901 , and four lifting holes 9011 are evenly distributed on the bottom plate 901 . The lifting holes 9011 are stepped holes that are wider at the top and narrower at the bottom.

As shown in Figure 2, the pressure cover 903 is embedded in the annular groove 9001, and the pressure cover 903 can slide in the annular groove 9001, and the sliding protrusions 9031 of the pressure cover 903 are slidably connected to the arc groove 9002 of the top plate 900 one by one. Under normal circumstances, the sliding protrusions 9031 are blocked by the steps 9004, and the pressure cover 903 cannot be separated from the top plate 900. However, when the sliding protrusions 9031 slide to the separation hole 9003, the steps 9004 no longer block the sliding protrusions 9031, and the pressure cover 903 can be separated from the top plate 900 as a whole.

As shown in FIG. 1 , four radioactive metal rods 904 are evenly distributed between the top plate 900 and the bottom plate 901 . The upper ends of the radioactive metal rods 904 are inserted into the separation holes 9003 of the top plate 900 , and the lower ends are inserted into the lifting holes 9011 of the bottom plate 901 .

Please refer to Figures 8 to 17, a radioactive rod bundle disassembly and opening device includes a base 3, a positioning mechanism, a rotating mechanism 4, a capping displacement mechanism 5, a clamping mechanism 6, a lifting mechanism 7, and a radioactive metal rod identification mechanism 8. The positioning mechanism is used to support and position the rod bundle rack 9, the rotating mechanism 4 is used to drive the rod bundle rack 9 to rotate, the capping displacement mechanism 5 is used to limit the capping 903, the clamping mechanism 6 is used to clamp the rod bundle rack 9, the lifting mechanism 7 is used to push out the radioactive metal rod 904 and the capping 903, and the radioactive metal rod identification mechanism 8 is used to identify the radioactive metal rod 904 on the rod bundle rack 9.

Continuing to refer to FIG. 9 , in one embodiment of the present invention, the positioning mechanism is installed on the base 3 , which includes a support base 1 and a positioning tube 2 disposed on the support base 1 , the support base 1 is used to support the rod cluster rack 9 , and the positioning tube 2 is used to surround the rod cluster rack 9 to provide protection for the rod cluster rack 9 .

Continuing to refer to Figures 8, 11, 12 and 14, in one embodiment of the present invention, the rotating mechanism 4 includes a lower limit assembly and a rotating drive assembly for driving the lower limit assembly to rotate, and the lower limit assembly is used to cooperate with the bottom plate 901 of the rod cluster rack 9 to enable the rod cluster rack 9 to rotate with the rotation of the lower limit assembly.

Further referring to Figures 8, 11, 12 and 14, in one embodiment of the present invention, the lower limit assembly includes a main shaft 402, the main body of the main shaft 402 is rotatably installed in the support seat 1, the upper end of the main shaft 402 passes through the top of the support seat 1 to cooperate with the rod cluster rack 9, and an upper center pin 401 is set at the center of the upper end of the main shaft 402. The center pin 401 is used to be plugged into the lower end of the tube cavity of the center tube 902 of the rod cluster rack 9. Two lower limit members 400 are also symmetrically set at the upper end of the main shaft 402. The lower limit member 400 is located at a non-center position of the main shaft 402, which is preferably an elastic pin structure for correspondingly plugging with the lower through hole 9010 on the bottom plate 901 of the rod cluster rack 9. The elastic pin is also called a spring pin, and its structure is a well-known technology and will not be described in detail. The rotary drive assembly includes a through piece 405, a transmission box 404 and a gear transmission structure 403. The transmission box 404 is installed at the upper end of the base 3 and is located on one side of the support seat 1. The gear transmission structure 403 is located inside the support seat 1. The through piece 405 is matched with the input end of the transmission box 404, and the output end of the transmission box 404 is matched with the lower end of the main shaft 402 through the gear transmission structure 403.

When the rotating mechanism 4 is working, the penetration piece 405 drives the transmission box 404 to work, the transmission box 404 drives the main shaft 402 to rotate through the gear transmission structure 403, and the main shaft 402 drives the rod cluster frame 9 to rotate through the lower limit piece 400.

It should be noted that the number of the lower limit members 400 can be set as required. The tooth transmission structure 403 can be replaced by a pulley structure or a sprocket structure. The penetration member 405 can be replaced by a motor installed on the upper end of the base 3.

Continuing to refer to Figures 15 and 16, the gland displacement mechanism 5 is installed on the base 3, which includes an upper limit assembly and a lifting drive assembly for driving the upper limit assembly to rise and fall. The upper limit assembly is used to cooperate with the gland 903 of the rod bundle rack 9 to limit the gland 903 so that the gland 903 cannot rotate.

Continuing to refer to FIG. 15 and FIG. 16 , in one embodiment of the present invention, the gland displacement mechanism 5 further includes a flip assembly, which is installed to drive the upper limit assembly to flip, and the lifting drive assembly drives the flip assembly to lift and lower together with the upper limit assembly.

Further referring to Figures 15 and 16, in one embodiment of the present invention, the upper limit assembly includes a cantilever 501, and six lower limit members 500 are evenly distributed on the bottom of one end of the cantilever 501 toward the positioning cylinder 2. The lower limit member 500 is a convex structure, and its shape is consistent with the groove 9030 on the pressure cover 903, and it is used to mate with the groove 9030.

Further referring to Figures 15 and 16, in one embodiment of the present invention, the lifting drive assembly includes a support frame 504, a lifting drive 507, a connecting seat 506 and a vertical slide rail 505, the lifting drive 507 and the vertical slide rail 505 are installed on the support frame 504, the output end of the lifting drive 507 is connected to the connecting seat 506, the flipping assembly includes a lifting slide 503, a rotating seat 502 and a flipping drive 508, the lifting slide 503 is slidably installed with the slide rail 505 on the support frame 504 through a slider, the rotating seat 502 and the flipping drive 508 are both installed on the lifting slide 503, the middle part of the cantilever 501 is rotatably installed with the rotating seat 502 through a rotating shaft, and the end of the cantilever 501 facing away from the upper limit member 500 is rotatably matched with the output end of the flipping drive 508.

When the pressure cover displacement mechanism 5 is working, the lifting driver 507 drives the lifting slide 503 and the cantilever 501 and the upper limit positioning member 500 thereon to lift and lower, and the flip driver 508 drives the cantilever 501 and the upper limit positioning member 500 thereon to flip, and the upper limit positioning member 500 is inserted into the slot 9030 of the pressure cover 903 through lifting and flipping.

It should be noted that the lifting actuator 507 and the tilting actuator 508 are preferably pneumatic cylinders, and electric cylinders or oil cylinders may also be used.

Continuing to refer to FIG. 11 and FIG. 12 , in one embodiment of the present invention, the clamping mechanism 6 is mounted on the upper end of the support base 1 , which clamps the bottom plate 901 of the rod cluster rack 9 from the side, and includes two clamping jaws 600 and a clamping drive assembly 601 for driving the two clamping jaws 600 to move closer and apart.

It should be noted that the clamping mechanism 6 is an automatic clamp, and its structure is a well-known technology in the field of mechanical clamps, which will not be described in detail.

Continuing to refer to Figures 12 and 13, in one embodiment of the present invention, the lifting mechanism 7 includes an annular mounting plate 702, four push rods 700 evenly distributed on the annular mounting plate 702 and used to lift the radioactive metal rod 904, and a lifting drive assembly 701 for driving the annular mounting plate 702 together with the push rods 700 to rise and fall. There are two lifting drive assemblies 701, which are installed on both sides of the upper end of the support seat 1. The annular mounting plate 702 is an annular structure, which is sleeved on the outside of the main shaft 402, and its two sides are connected to the output ends of the two lifting drive assemblies 701. The annular mounting plate 702 and the push rods 700 are both located in the support seat 1, and four through holes corresponding to the push rods 700 and the radioactive metal rods 904 of the rod bundle rack 9 are evenly distributed on the top of the support seat 1, and the push rods 700 pass through the through holes.

When the lifting mechanism 7 is working, the lifting drive assembly 701 drives the annular mounting plate 702 and the ejector rod 700 to move up and down.

It should be noted that the jacking drive assembly 701 is preferably a pneumatic cylinder, and an electric cylinder or an oil cylinder may also be used.

Continuing to refer to FIG. 9 and FIG. 10 , in one embodiment of the present invention, the radioactive metal rod identification mechanism 8 includes a metal rod identification mechanism body 800, an identification mechanism mounting frame 801, an identification mechanism moving driver 802, and an identification mechanism driver mounting seat 803. The identification mechanism driver mounting seat 803 is mounted on one upper end of the positioning cylinder 2, the identification mechanism moving driver 802 is mounted on the identification mechanism driver mounting seat 803, the identification mechanism mounting frame 801 is mounted on the output end of the identification mechanism moving driver 802, and the metal rod identification mechanism body 800 is mounted on the identification mechanism mounting frame 801. The identification mechanism moving driver 802 is used to drive the metal rod identification mechanism body 800 to move in the horizontal direction.

When the radioactive metal rod 904 needs to be identified, the identification mechanism moving driver 802 drives the metal rod identification mechanism body 800 to extend toward the center of the positioning tube 2 so that the metal rod identification mechanism body 800 contacts the radioactive metal rod 904 .

It should be noted that the identification mechanism moving driver 802 is preferably a pneumatic cylinder, and an electric cylinder or an oil cylinder may also be used.

Please refer to FIG. 7 , a method for disassembling a radioactive rod bundle, opening the cover and taking out the rods, which is implemented by using the above-mentioned radioactive rod bundle disassembling and opening the cover device, comprises the following steps:

Step 1, the turning driver 508 drives the cantilever 501 to turn upward, and then puts the rod cluster rack 9 into the positioning mechanism for support and positioning, which specifically includes:

Step 1.1, the control system presets the initial angular position of the two elastic pins to the state shown in FIG. 17, that is, the position of the elastic pins corresponds to the position of the top rod 700; the rod cluster rack 9 is placed on the support seat 1 and in the positioning tube 2, and the center pin 401 is inserted into the tube cavity of the center tube 902 of the rod cluster rack 9. The bottom plate 901 of the rod cluster rack 9 fits with the upper surface of the support seat 1, and the two elastic pins on the rotating mechanism 4 are squeezed by the bottom plate 901 and retracted, and then the two elastic pins of the rotating mechanism 4 rotate. When the elastic pins encounter the lower through hole 9010 of the bottom plate 901, the two elastic pins will be reset under the action of elastic force and extend out and insert into the lower through hole 9010, so as to limit the rod cluster rack 9, so that the rotating mechanism 4 drives the rod cluster rack 9 to rotate, and then the rotating mechanism 4 drives the elastic pins to return to the initial angular position;

Step 1.2, since there are two elastic pins, there are six lower through holes 9010, and there are four radioactive metal rods 904, as shown in FIG6 , the elastic pins may be inserted into the lower through holes 9010 at the two positions ab, or may be inserted into the lower through holes 9010 at the two positions cd or ef. When the elastic pins are inserted into the lower through holes 9010 at the two positions ab, the positions of the ejector rod 700 and the radioactive metal rod 904 are exactly one-to-one corresponding. When the elastic pins are inserted into the lower through holes 9010 at the two positions cd or ef, the ejector rod 700 and the nearest radioactive metal rod 904 differ by 30°. It is necessary to rotate the rod cluster frame 9 to make the ejector rod 700 correspond to the position of the reflective metal rod 904, but the control system does not know which group of lower through holes 9010 the elastic pins are aligned with. 10, so the control system controls the rotating mechanism 4 to drive the rod cluster rack 9 to rotate from the initial angle position, and stops every 60°. When stopping, the identification mechanism moving driver 802 drives the metal rod identification mechanism body 800 to extend, and identifies the radioactive metal rod 904 on the rod cluster rack 9 through the metal rod identification mechanism body 800. When the rod cluster rack 9 rotates to the point where the radioactive metal rod 904 contacts the metal rod identification mechanism body 800, the metal rod identification mechanism body 800 identifies the radioactive metal rod 904. At this time, the four ejector rods 700 correspond to the positions of the four radioactive metal rods 904 one by one. The metal rod identification mechanism body 800 transmits a signal to the control system, and the control system saves the angular position of the elastic pin at this time as the ejection angle position.

Through calculation, it can be known that when the elastic pin is inserted into the lower through hole 9010 at the two positions ab, the elastic pin needs to be rotated three times, that is, 180°, to determine the ejection angle position; when the elastic pin is inserted into the lower through hole 9010 at the two positions cd, the elastic pin needs to be rotated twice, that is, 120°, to determine the ejection angle position; when the elastic pin is inserted into the lower through hole 9010 at the two positions ef, the elastic pin needs to be rotated once, that is, 60°, to determine the ejection angle position.

Step 2, limiting the pressure cover 903 of the rod cluster frame 9 by the pressure cover displacement mechanism 5 so that the pressure cover 903 cannot rotate, specifically includes:

Step 2.1, the elastic pin drives the rod cluster frame 9 to rotate a certain angle, so that the upper limit member 500 corresponds to the position of the slot 9030 on the pressure cover 903;

Step 2.2, the flipping driver 508 drives the cantilever 501 to flip downward, and then the lifting driver 507 drives the cantilever 501 to move downward, so that the upper limit member 500 on the cantilever 501 is inserted into the slot 9030 of the pressure cover 903, so that the pressure cover 903 cannot rotate.

It should be noted that the angular position of the six upper limit positioning members 500 on the cantilever 501 and the first angular difference between the initial angular position of the spring pin in the horizontal direction can be preset and stored in the control system program, and the second angular difference of the elastic pin from the initial angular position to the ejection angular position is also known, and the angular position of the six slots 9030 on the pressure cover 903 and the position of the six lower through holes 9010 on the base plate 901 are also one-to-one corresponding. When the pressure cover 903 is in a locked state, the third angular difference between the slots 9030 and the lower through holes 9010 in the horizontal direction can be known in advance and stored in the control system program. In this way, after determining the ejection angular position of the rod cluster rack 9, as long as the elastic pin drives the rod cluster rack 9 to rotate a certain angle, the upper limit positioning member 500 can be made to correspond to the position of the slots 9030 on the pressure cover 903, and the angle can be calculated.

Step 3, driving the main body of the rod cluster frame 9 to rotate relative to the pressure cover 903 by the rotating mechanism 4, so that the pressure cover 903 is changed from a locked state to a loosened state, specifically including:

The elastic pin drives the main body of the rod cluster frame 9 to rotate at a certain angle, so that the pressure cover 903 rotates from a locked state to a loosened state relative to the main body of the rod cluster frame 9, that is, the sliding protrusion 9031 of the pressure cover 903 slides to the separation hole 9003.

Step 4, clamping the rod cluster rack 9 by the clamping mechanism 6, specifically includes:

The clamping drive assembly 601 in the clamping mechanism 6 drives the two clamping claws 600 to approach each other and tightens the bottom plate 901 of the rod cluster rack 9 so that the main body of the rod cluster rack 9 does not move up and down.

Step 5, ejecting the radioactive metal rods 904 and the gland 903 on the rod cluster rack 9 by the jacking mechanism 7, specifically includes:

The lifting drive assembly 701 of the lifting mechanism 7 drives the push rod 700 to move upward, so that the push rod 700 extends from the support seat 1, and the push rod 700 is inserted into the lifting hole 9011 of the bottom plate 901, and the radioactive metal rod 904 is lifted up together with the pressure cover 903 to open the cover and take out the rod.

Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method for disassembling and uncovering a radioactive rod bundle, which is characterized by comprising the following steps:

step 1, placing a bar bundle frame (9) into a positioning mechanism for supporting and positioning;

step 2, limiting a gland (903) of the rod bundle frame (9) through a gland displacement mechanism (5), so that the gland (903) cannot rotate;

step 3, the main body of the bar bundle rack (9) is driven to rotate relative to the gland (903) through the rotating mechanism (4), so that the gland (903) is changed from a locking state to a loosening state;

step 4, clamping the rod bundle frame (9) through a clamping mechanism (6);

And 5, ejecting the radioactive metal rods (904) and the gland (903) on the rod bundle frame (9) through the jacking mechanism (7).

2. The method for removing the radioactive rod bundle from the cover according to claim 1, wherein the step 1 further comprises: after the bar bundle frame (9) is placed in the positioning mechanism, the lower limiting component of the rotating mechanism (4) rotates, so that the lower limiting component is inserted and matched with a lower through hole (9010) on a bottom plate (901) of the bar bundle frame (9).

3. The method for removing the radioactive rod bundle from the cover according to claim 1, wherein the step 1 further comprises: the rotating mechanism (4) drives the bar bundle frame (9) to rotate, the radioactive metal bars (904) on the bar bundle frame (9) are identified through the radioactive metal bar identification mechanism (8), and when the radioactive metal bars (904) are identified by the radioactive metal bar identification mechanism (8), the rotating mechanism (4) stops driving the bar bundle frame (9) to rotate, so that the ejector rods (700) are in one-to-one correspondence with the positions of the reflective metal bars (904).

4. The method for removing the radioactive rod bundle from the cover according to claim 1, wherein the step 3 further comprises: after the gland (903) is converted into an unclamped state from a locked state, the gland displacement mechanism (5) is reset, then the rotating mechanism (4) drives the bar bundle rack (9) to rotate, the radioactive metal bars (904) on the bar bundle rack (9) are identified through the radioactive metal bar identification mechanism (8), and when the radioactive metal bars (904) are identified by the radioactive metal bar identification mechanism (8), the rotating mechanism (4) stops driving the bar bundle rack (9) to rotate, so that the placement angle of the bar bundle rack (9) is determined.

5. A method of removing a radioactive rod bundle from a cover according to any one of claims 1 to 4, wherein the method is performed by a radioactive rod bundle removing cover device comprising:

the positioning mechanism is used for supporting and positioning the bar bundle frame (9);

a rotation mechanism (4), the rotation mechanism (4) being configured to rotate the bundle rack (9);

the gland displacement mechanism (5), the gland displacement mechanism (5) is used for limiting a gland (903) of the rod bundle frame (9);

the clamping mechanism (6), the said clamping mechanism (6) is used for holding the bar bundle rack (9); and

And the jacking mechanism (7) is used for jacking the radioactive metal rods (904) and the gland (903) on the rod bundle frame (9).

6. The method for removing the cover from the radioactive rod bundle according to claim 5, wherein the positioning mechanism comprises a supporting seat (1) and a positioning cylinder (2) arranged on the supporting seat (1), the supporting seat (1) is used for supporting the rod bundle frame (9), and the positioning cylinder (2) is used for surrounding the rod bundle frame (9).

7. A method for removing a radioactive rod bundle from a cover according to claim 5, wherein the rotating mechanism (4) comprises a lower limit assembly and a rotating driving assembly for driving the lower limit assembly to rotate, and the lower limit assembly is used for being in limit fit with a bottom plate (901) of the rod bundle rack (9) so that the rod bundle rack (9) can rotate along with the rotation of the lower limit assembly;

The lower limiting component comprises at least one lower limiting piece (400), and the lower limiting piece (400) is an elastic pin which is correspondingly inserted and matched with a lower through hole (9010) on a bottom plate (901) of the rod bundle frame (9).

8. The method for removing the cover and the rod by disassembling the radioactive rod bundle according to claim 5, wherein the cover pressing displacement mechanism (5) comprises an upper limit component and a lifting driving component for driving the upper limit component to lift, and the upper limit component is used for being in limit fit with a cover pressing (903) of the rod bundle frame (9) so as to prevent the cover pressing (903) from rotating;

the gland displacement mechanism (5) further comprises a turnover assembly, the turnover assembly is installed and drives the upper limit assembly to turn over, and the lifting driving assembly drives the turnover assembly to lift together with the upper limit assembly;

The upper limiting component comprises at least one upper limiting piece (500), and the upper limiting piece (500) is correspondingly inserted and matched with a groove (9030) on a gland (903) of the rod bundle frame (9).

9. A method of removing a radioactive rod bundle from a cover according to claim 5, wherein the clamping mechanism (6) clamps the bottom plate (901) of the rod bundle rack (9) from the side, and comprises two clamping jaws (600) and a clamping driving assembly (601) for driving the two clamping jaws (600) to approach and separate;

The jacking mechanism (7) comprises a jacking rod (700) for jacking the radioactive metal rod (904) and a jacking driving assembly (701) for driving the jacking rod to lift.

10. A method of removing a radioactive rod bundle uncapping according to claim 5, wherein the radioactive rod bundle uncapping device further comprises a radioactive metal rod identification mechanism (8), the radioactive metal rod identification mechanism (8) being configured to identify a radioactive metal rod (904) on a bundle rack (9).