CN213228936U

CN213228936U - Cobalt source goes out to pile with depleted uranium shielding instrument conveyer

Info

Publication number: CN213228936U
Application number: CN202021559431.9U
Authority: CN
Inventors: 韩鹏; 陈宝成; 于群利; 曾韵韬; 吴浩; 张帆; 孙仲达
Original assignee: CNNC Nuclear Power Operation Management Co Ltd; Qinshan Nuclear Power Co Ltd
Current assignee: CNNC Nuclear Power Operation Management Co Ltd; Qinshan Nuclear Power Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-18
Anticipated expiration: 2030-07-31

Abstract

The invention relates to the technical field of nuclear power station transportation tools, and particularly discloses a depleted uranium shielding tool transportation device for discharging a cobalt source of a heavy water reactor nuclear power unit. The device comprises a base and a frame, wherein a first lantern ring and a second lantern ring are respectively arranged on the base; the frame is fixed on the base, a first guide ring and a second guide ring are respectively arranged on the upper surface of the frame, the first guide ring is matched with and corresponds to the first sleeve ring in size, and the second guide ring is matched with and corresponds to the second sleeve ring in size; the bottom of the base is provided with a plurality of wheels, so that the base can move. The transportation device can be used for carrying out split transportation on the shielding base and the shielding inner sleeve and can prevent the collision of depleted uranium tools in the transportation process; the bottom of the depleted uranium tool is positioned on the conveying device, so that the depleted uranium tool is prevented from shifting during conveying.

Description

Cobalt source goes out to pile with depleted uranium shielding instrument conveyer

Technical Field

The invention belongs to the technical field of nuclear power station transportation tools, and particularly relates to a depleted uranium shielding tool transportation device for discharging a cobalt source of a heavy water reactor nuclear power unit.

Background

The cobalt source of the heavy water reactor nuclear power plant has a very high radiation dose and therefore is radiation shielded using a depleted uranium shielding tool during removal of the cobalt source from the reactor core and loading into a shielded vessel to reduce the radiation dose to which the operator may be exposed. The lean uranium shielding tool for cobalt source out-of-pile comprises a shielding base and a shielding inner sleeve, the lean uranium shielding tool is required to be transferred to a reactor control platform of a overhaul unit from a radioactive product storage room during use, the conventional transportation mode is that a common manual hydraulic forklift and a tray are used for transportation, multiple persons are required to lean against the lean uranium shielding tool for transportation in the whole course, and the lean uranium shielding tool is difficult to turn on side if personnel are matched in the transportation process. The depleted uranium shielding instrument has had fixed pollution along with using for many years, and itself has certain radioactivity, and according to the mode of transportation in the past, personnel need direct contact depleted uranium shielding instrument, have personnel to accept extra radiation dose risk. The transportation of the depleted uranium shielding tool can be realized even if the existing trolley is used, the phenomenon that the lean uranium shielding tool is overturned and shaken easily occurs, and the lean uranium shielding tool is rubbed by shaking in the transportation process, so that the electroplated layer on the surface layer drops off, and the performance of the depleted uranium shielding tool is influenced.

Disclosure of Invention

The invention aims to provide a depleted uranium shielding tool transportation device for cobalt source discharge, which solves the defects of the existing depleted uranium shielding tool transportation device.

The technical scheme of the invention is as follows: a depleted uranium shielding tool transportation device for cobalt source discharge comprises a base and a frame, wherein a first lantern ring and a second lantern ring are respectively arranged on the base; the frame is fixed on the base, a first guide ring and a second guide ring are respectively arranged on the upper surface of the frame, the first guide ring is matched with and corresponds to the first sleeve ring in size, and the second guide ring is matched with and corresponds to the second sleeve ring in size; the bottom of the base is provided with a plurality of wheels, so that the base can move.

The first guide ring is arranged in the middle of the front side of the upper surface of the frame through the auxiliary frame; first guide ring and the shielding endotheca size phase-match among the depleted uranium shielding instrument that awaits transporting make the shielding endotheca can support to be fixed first guide ring with between the first lantern ring.

The second guide ring is matched with a shielding base in a shielding tool to be transported in size, and the shielding base can be supported and fixed between the second guide ring and the second sleeve ring; and a clamping part is arranged on the frame near the second guide ring, and the clamping part can clamp and limit the shielding base.

The clamping component comprises supporting blocks, sliding plates and rotating rods, the two supporting blocks are symmetrically arranged on the frame of the second guide ring accessory along the diagonal line, the sliding plates are arranged on the supporting blocks, and the sliding plates and the supporting blocks are fixed through fastening screws; the middle part of the sliding plate is provided with a guide groove, a rotating rod is inserted in the guide groove, a connecting ring is sleeved on the rotating rod, and a stop rod is arranged on the connecting ring.

The wheel outside is equipped with the safety cover of fixing mutually with the base, and the safety cover with be equipped with the strengthening rib between the frame, the strengthening rib middle part is equipped with the hole for hoist.

Auxiliary support frames are symmetrically arranged on two sides of the frame, and a first support rod is fixed between the lower ends of the auxiliary support frames and the base; the bottom end of the auxiliary supporting frame is also provided with an anti-rollover wheel.

The base front side is fixed with the link, the link is connected with frame construction's traction frame through the pivot to the welding has the pull ring at the traction frame top.

A second supporting rod is arranged at the front end of the upper surface of the base, and a first connecting rod is arranged at the upper end of one side of the second supporting rod; the traction frame upper support rod is provided with a second connecting rod through a bearing, a hook is arranged on the second connecting rod, and when the traction frame turns to the base, the hook can be clamped on the first connecting rod to achieve the folding-up of the traction frame.

Armrests are welded to the front side and the rear side of the upper surface of the frame respectively; the base bottom is equipped with the ejector pin, and be in the ejector pin surface is equipped with the metal pole.

And the inner walls of the first guide ring, the second guide ring, the first sleeve ring and the second sleeve ring are all provided with sealing rings made of tetrafluoroethylene materials.

The invention has the following remarkable effects: the depleted uranium shielding tool transportation device for cobalt source discharge has the following advantages: (1) the auxiliary supporting frame and the anti-rollover wheel make the device more stable and safer; (2) the shielding base and the shielding inner sleeve are detached and transported and are stably fixed; (3) tetrafluoroethylene materials are arranged on the inner walls of the first guide ring, the second guide ring, the first sleeve ring and the second sleeve ring to form sealing rings, so that the lean uranium tools are prevented from being collided in the transportation process, the tin coating is prevented from being scratched, and the lean uranium tools are better protected; (4) the lifting holes in the traction frame and the reinforcing ribs are arranged, and the arrangement of the handrail is combined, so that the switching between mechanical pulling and manual pulling can be realized, the labor is saved during the traction, and the push rod is arranged, so that the wheels of the trolley can be supported in an auxiliary manner under the condition of long-term stress, and the wheels cannot be damaged; (5) the sliding plate is arranged, so that the shielding base can be positioned when being transported, and meanwhile, the auxiliary frame is provided with the screw hole which corresponds to the hole in the shielding inner sleeve, so that the shielding inner sleeve can be stably supported, and the transportation is more stable; (6) the base is designed according to the structural size of the bottoms of the two depleted uranium shielding tools, so that the depleted uranium tools can be positioned at the bottoms of the depleted uranium tools when placed on the conveying device, and the depleted uranium tools are prevented from shifting during conveying. In order to reduce the whole width of the transportation device and meet the limitation of transportation channels, the placement positions of the depleted uranium tools are arranged in front and at the back.

Drawings

Fig. 1 is a schematic structural diagram of a transportation device of a depleted uranium shielding tool for cobalt source discharge from a reactor according to the present invention;

FIG. 2 is a top view of a transport device of a depleted uranium shielding tool for cobalt source discharge from a reactor according to the present invention;

FIG. 3 is a top view of a base of a transport device of a depleted uranium shielding tool for cobalt source discharge from a reactor according to the present invention;

in the figure: 1. a top rod; 2. a wheel; 3. a rotating shaft; 4. a connecting frame; 5. a protective cover; 6. anti-rollover wheels; 7. a first support bar; 8. hoisting holes; 9. reinforcing ribs; 10. an auxiliary support frame; 11. a base; 12. a frame; 13. a support block; 14. a slide plate; 15. a handrail; 16. rotating the rod; 17. a connecting ring; 18. a stop lever; 19. a sub-frame; 20. a first guide ring; 21. a second guide ring; 22. a traction frame; 23. a first connecting rod; 24. hooking; 25. a second connecting rod; 26. a second support bar; 27. a pull ring; 28. a first collar; 29. a second collar; 30. fastening screws; 31. and a guide groove.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1 to 3, a poor uranium shielding tool transportation device for cobalt source discharge includes a base 11 and a frame 12, wherein the base 11 is of a flat plate structure, a plurality of wheels 2 are uniformly mounted on the bottom surface of the base 11, a protective cover 5 welded and fixed with the base 11 is distributed on the outer side of each wheel 2, each wheel 2 is a high-strength nylon wheel, each tail wheel 2 is a straight wheel, each front wheel 2 is a universal wheel, and a brake is arranged on each universal wheel; a connecting frame 4 is fixed on the front side of the base 11, a traction frame 22 of a frame structure is connected with the connecting frame 4 through a rotating shaft 3, so that the traction frame 22 rotates relative to the base 11 along a rotating shaft 33, a pull ring 27 is welded at the top end of the traction frame 22, and the lower end of the traction frame 22 is of a rod-shaped frame structure; a second support rod 26 is welded in the middle of the front end of the upper surface of the base 11, a first connecting rod 23 is fixed at the upper end of one side of the second support rod 26, a second connecting rod 25 is fixedly installed on the middle support rod of the traction frame 22 through a bearing, a hook 24 is installed on the second connecting rod 25, and when the traction frame 22 turns to the base 11, the hook 24 can be clamped on the first connecting rod 23 to retract the traction frame 22; a frame 12 is fixedly welded on the base 11, a reinforcing rib 9 is welded between the frame 12 and the protective cover 5, and a hoisting hole 8 is formed in the reinforcing rib 9; auxiliary support frames 10 are symmetrically welded on two sides of the frame 12, a first support rod 7 is welded between the lower end of the auxiliary support frame 10 and the base 11, and an anti-rollover wheel 6 is installed at the bottom end of the auxiliary support frame 10; armrests 15 are respectively welded on the front side and the rear side of the upper surface of the frame 12; a sub-frame 19 is welded in the middle of the front side of the upper surface of the frame 12, and a first guide ring 20 is fixed in the middle of the sub-frame, so that the first guide ring 20 corresponds to a first lantern ring 28 fixedly installed on the base 11; a second guide ring 21 is welded on the rear side of the upper surface of the frame 12, so that the second guide ring 21 corresponds to a second lantern ring 29 on the base 11; the supporting blocks 13 are welded on the upper surface of the frame 12 with the diagonal symmetry of the second guide ring 21, the sliding plates 14 are installed on the supporting blocks 13, and the sliding plates 14 and the supporting plates 13 are fixed through fastening screws 30; a guide groove 31 is formed in the middle of the sliding plate 14, a rotating rod 16 is inserted in the guide groove 31, a connecting ring 17 is sleeved on the rotating rod 16, and a stop lever 18 is welded on the side surface of the connecting ring; the inner walls of the first guide ring 20, the second guide ring 21, the first sleeve ring 28 and the second sleeve ring 29 are all provided with sealing rings made of tetrafluoroethylene materials, and the bottoms of the first sleeve ring 28 and the second sleeve ring 29 are closed and are not communicated with the bottom surface of the base 11; the dimensions of the first collar 28 and the first guide ring 20 match the dimensions of the shield inner sleeve, and the dimensions of the second collar 29 and the second guide ring 21 match the dimensions of the shield base; the bottom of the base 11 is fixedly connected with a top rod 1 through threads, and metal rods are welded on the periphery of the surface of the top rod 1.

The invention relates to a poor uranium shielding tool transportation device for cobalt source discharge, which comprises the following working processes: when the depleted uranium shielding tool is transported, the depleted uranium shielding tool is taken out from a radioactive product storage room, then the depleted uranium shielding tool is disassembled into a shielding base and a shielding inner sleeve, the shielding base and the shielding inner sleeve are wrapped and wound by plastic cloth to prevent a transportation device from being polluted, the shielding base is penetrated into the shielding base from a second guide ring 21, the bottom of the shielding base is penetrated into a second sleeve ring 29, then symmetrical fastening screws 30 are adjusted, a sliding plate 14 is outwards slid, the sliding plate 14 clamps the shielding base, at the moment, a stop lever 18 is rotated to stop the sliding plate 14 by the stop lever 18, the positioning of the sliding plate 14 is further enhanced, then the shielding inner sleeve is inserted into the first guide ring 20, the bottom of the shielding inner sleeve is inserted into a first sleeve ring 28, and the inner walls of the first guide ring 20, the second guide ring 21, the first sleeve ring 28 and the second sleeve ring 29 are all provided with nylon materials to be made into gaskets, can protect shielding endotheca and shielding base surface galvanizing coat, in the transportation, at first rotate traction frame 22, block couple 24 on head rod 23, artifical promotion or pulling handrail 15, transport the place that the vehicle can be current with this dolly, reuse the vehicle and carry out mechanical dragging, take off couple 24 this moment again, outwards overturn the pulling with traction frame 22, then hang pull ring 27 on the car, start the vehicle and drag, when using the crane to hoist again, break out in the installation of hole for hoist 8 department, use the suspender to hoist.

Claims

1. The depleted uranium shielding tool transportation device for cobalt source discharge is characterized by comprising a base (11) and a frame (12), wherein a first collar (28) and a second collar (29) are respectively arranged on the base (11); the frame (12) is fixed on the base (11), a first guide ring (20) and a second guide ring (21) are respectively arranged on the upper surface of the frame (12), the first guide ring (20) is matched with and corresponds to the first sleeve ring (28) in size, and the second guide ring (21) is matched with and corresponds to the second sleeve ring (29) in size; the bottom of the base (11) is provided with a plurality of wheels (2) to realize the movement of the base (11).

2. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: the first guide ring (20) is arranged at the middle position of the front side of the upper surface of the frame (12) through a subframe (19); the first guide ring (20) is matched with the size of a shielding inner sleeve in a uranium-depleted shielding tool to be transported, so that the shielding inner sleeve can be supported and fixed between the first guide ring (20) and the first sleeve ring (28).

3. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: the second guide ring (21) is matched with a shielding base in a shielding tool to be transported in size, and the shielding base can be supported and fixed between the second guide ring (21) and the second sleeve ring (29); and a clamping part is arranged on the frame (12) near the second guide ring (21), and the clamping part can clamp and limit the shielding base.

4. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 3, wherein: the clamping component comprises supporting blocks (13), sliding plates (14) and a rotating rod (16), the two supporting blocks (13) are diagonally and symmetrically arranged on a frame (12) of the accessory of a second guide ring (21), the sliding plates (14) are arranged on the supporting blocks (13), and the sliding plates (14) are fixed with the supporting blocks (13) through fastening screws (30); the middle of the sliding plate (14) is provided with a guide groove (31), a rotating rod (16) is inserted in the guide groove (31), the rotating rod (16) is sleeved with a connecting ring (17), and the connecting ring (17) is provided with a blocking rod (18).

5. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: the wheel (2) outside is equipped with safety cover (5) fixed mutually with base (11), and safety cover (5) with be equipped with strengthening rib (9) between frame (12), strengthening rib (9) middle part is equipped with hole for hoist (8).

6. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: auxiliary support frames (10) are symmetrically arranged on two sides of the frame (12), and a first support rod (7) is fixed between the lower end of each auxiliary support frame (10) and the base (11); the bottom end of the auxiliary supporting frame (10) is also provided with an anti-rollover wheel (6).

7. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: the base (11) front side is fixed with link (4), link (4) are connected with traction frame (22) of frame construction through pivot (3) to the welding has pull ring (27) on traction frame (22) top.

8. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 7, wherein: a second support rod (26) is arranged at the front end of the upper surface of the base (11), and a first connecting rod (23) is arranged at the upper end of one side of the second support rod (26); the upper support rod of the traction frame (22) is provided with a second connecting rod (25) through a bearing, a hook (24) is arranged on the second connecting rod (25), and when the traction frame (22) turns to the base (11), the hook (24) can be clamped on the first connecting rod (23) to be retracted.

9. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: armrests (15) are respectively welded on the front side and the rear side of the upper surface of the frame (12); the base (11) bottom is equipped with ejector pin (1), and be in ejector pin (1) surface is equipped with the metal pole.

10. The depleted uranium shielding tool transportation device for cobalt source discharge from a reactor, according to claim 1, wherein: and sealing rings made of tetrafluoroethylene materials are arranged on the inner walls of the first guide ring (20), the second guide ring (21), the first sleeve ring (28) and the second sleeve ring (29).