CN202307170U - Tipping basket with counterweight adjusting function - Google Patents
Tipping basket with counterweight adjusting function Download PDFInfo
- Publication number
- CN202307170U CN202307170U CN2011203893448U CN201120389344U CN202307170U CN 202307170 U CN202307170 U CN 202307170U CN 2011203893448 U CN2011203893448 U CN 2011203893448U CN 201120389344 U CN201120389344 U CN 201120389344U CN 202307170 U CN202307170 U CN 202307170U
- Authority
- CN
- China
- Prior art keywords
- tipping
- basket
- tumbling
- basket body
- tipping basket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model belongs to the field of nuclear fuel for PWR (pressurized water reactor) nuclear power stations, and specifically discloses a tipping basket with a counterweight adjusting function. The tipping basket comprises a tipping basket body; the upper end of the tipping basket body is provided with a top cap, the middle part of the tipping basket body is provided with a rotating shaft, and the lower end of the tipping basket body is provided with a bottom cap; a flange at the upper end of the tipping basket body is fixedly provided with a threaded rod which is parallel to the axis direction of the tipping basket body, an external thread is arranged on the outer side of the threaded rod, and the threaded rod passes through a counterweight block with a threaded hole; and the tail end of the threaded rod is fixedly provided with a lower stop dog. Through the relative movement of the counterweight block of the threaded rod, the position of the centre of gravity of the tipping basket is changed and is adjusted to be coincident with the center of the rotating shaft of the tipping basket, thereby ensuring that a faulty fuel assembly arranged in the tipping basket and subjected to irradiation is in a safe and stable state in the process of tipping; and further, through arrangement of a guide rod, a situation that the counterweight block moves in the axis direction of the tipping basket is ensured, so that the tipping process is more stable.
Description
Technical field
The utility model invention belongs to pressurized-water reactor nuclear power plant nuclear fuel bogey, is specifically related to a kind of basket of tumbling.
Background technology
Nuclear power station reloads in the process, finds that damaged or its grid spacer coaming plate of the fuel rod of multiplexing fuel assembly has damage in various degree.The security generation significant impact of damaged meeting to the power station operation appears in fuel assembly behind the irradiation.The damaged leakage of fuel rod can cause radioactive fission product to leak in the circuit cools agent, causes system's radioactive level to increase.Damaged fuel assembly considers that the risk control of security of operation does not allow to return again stack operation in principle.The damage of spacer grid of fuel assembly coaming plate is meant the local slight damage of the peripheral coaming plate of screen work behind the irradiation, outer the sticking up of indivedual guide vane distortion.Because reactor core fuel assembly spacing distance is very little; The local slight damage of grid spacer coaming plate, the outer fuel assembly that sticks up of guide vane distortion are in loading and unloading material process; Be easy to block, scrape, draw, thereby the safety of adjacent fuel assembly is produced threat with the generation of adjacent fuel assembly.If these assemblies are not handled, in view of safe consideration will not allow back heap multiplexing.
In addition, if the fuel assembly of and grid spacer coaming plate damage damaged to fuel rod behind the irradiation is not repaired and handled, also can cause enormous economic loss.According to desired 1/4, the 1/8 symmetrical requirement of refuelling scheme; Supposing that group fuel assembly damage is unavailable will cause other three groups of normal fuel assemblies on the reactor core symmetric position can't go into heap using; Will be with causing great waste; And interim calculating and checks that starts emergent refuelling scheme needs nearly one month, and this reloads prolongation time of overhaul, and the economic loss that causes will be will ten minutes huge.
Therefore, repair being carried out in the fuel rod breakage of fuel assembly behind the irradiation or grid spacer damage is significant.
For fuel assembly behind the dismountable irradiation of bottom nozzle, no matter be fuel rod breakage or grid spacer damage, repair process all needs damaged fuel assembly is tumbled, and just can carry out follow-up repair.Yet the fuel assembly behind the irradiation self has been activated and has become radioactive source, has extremely strong radioactivity, and the staff can't be approaching under normal condition, need under the boron water shielding, use special device that damaged fuel assembly is steadily tumbled.
Summary of the invention
The purpose of the utility model is to provide a kind of position that can pass through adjusting self balancing weight; To change centre of gravity place; It is overlapped with the basket rotating shaft center that tumbles, thereby guarantee that the damaged fuel assembly behind the irradiation is in the basket of tumbling with adjustable weight function of steady safe condition in switching process.
The technical scheme of the utility model is following:
A kind of basket of tumbling with adjustable weight function; It comprises the basket body of tumbling, and its upper end is provided with top cover, and the middle part is provided with turning axle; The lower end is provided with bottom; Be fixed with the parallel screw rod of axis direction with the basket body of tumbling on the flange of the described basket body upper end of tumbling, this screw rod is processed with external thread outward, and screw rod passes the balancing weight that is provided with threaded hole.
In the above-mentioned basket of tumbling: also be fixed with guide pole on the flange of the described basket body upper end of tumbling with adjustable weight function; Also be provided with mounting hole on the described balancing weight; Guide pole passes the mounting hole on the balancing weight; And guide pole is parallel with described screw rod, block under the end of guide pole and screw rod is fixed with.
In the above-mentioned basket of tumbling with adjustable weight function: described upper and lower side of tumbling the basket body is equipped with flange, is equipped with flange on top cover and the bottom, through bolt flange face is docked, make top cover and bottom respectively with the basket body-fixed of tumbling.
The beneficial effect of the utility model is: through the guiding of guide pole; Guarantee that balancing weight moves on the basket axis direction of tumbling along screw rod; The whole centre of gravity place of the feasible basket of tumbling changes; Overlap with the basket rotating shaft center that tumbles, thereby the damaged fuel assembly that guarantees to be contained in behind the irradiation of tumbling in the basket is in steady safe condition in the process of tumbling.
Description of drawings
Fig. 1 is the basket structural representation of tumbling with adjustable weight function of the utility model;
Among the figure: 1. top cover; 2. guide pole; 3. straight pin; 4. turning axle; 5. bottom; 6. the basket body of tumbling; 7. descend block; 8. balancing weight; 9. screw rod.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
As shown in Figure 1, at the middle part of the basket body 6 of tumbling fixed installation turning axle 4.
The tumble bottom of basket body 6 is equipped with flange, on flange face, is processed with bolt hole, also is provided with flange on the bottom 5, and bolt is arranged on it, with the flange face butt joint, utilizes bolt bottom 5 to be fixedly mounted on the bottom of the basket body 6 of tumbling again.
Top at the basket body 6 of tumbling is fixed with flange; Welding fixed guide pole 2 and screw rod 9 on flange; And guide pole 2 is all parallel with the axis direction of the basket body 6 of tumbling with screw rod 9, on guide pole 2 and screw rod 9, is installed with balancing weight 8, and described balancing weight 8 changes the position through screw thread on screw rod 9; And be installed with block 7 down in the lower end of screw rod 9, prevent that balancing weight 8 from skidding off screw rod 9.Straight pin 3 will descend block 7 to be fixed on the guide pole 2.
Top at the basket body 6 of tumbling is equipped with flange face equally, and top cover 1 also is provided with flange face, on flange face, is provided with bolt, utilizes bolt top cover 1 to be fixedly mounted on the top of the basket body 6 of tumbling.
During work, at first top cover 1 is disassembled from the basket body 6 of tumbling, the fuel assembly of in the basket body 6 of tumbling, packing into then installs top cover 1 again; Through regulating the position of balancing weight 8 on screw rod 9, the basket centre of gravity place of tumbling is overlapped with turning axle 4 centers then, thereby the feasible basket of tumbling is realized steadily tumbling; Dismantle top cover 1 at last, from the basket 9 of tumbling, take out full simulated fuel assembly, then top cover 1 is reinstalled.Like this, the basket of tumbling can be realized fuel component safety behind the irradiation is stably tumbled.
Claims (3)
1. basket of tumbling with adjustable weight function, it comprises the basket body (6) of tumbling, its upper end is provided with top cover (1); The middle part is provided with turning axle (4); The lower end is provided with bottom (5), it is characterized in that: be fixed with the screw rod (9) parallel with the axis direction of the basket body (6) of tumbling on the upper flange of described basket body (6) of tumbling, the outer external thread that is processed with of this screw rod (9); Screw rod (9) passes the balancing weight (8) that is provided with threaded hole, block (7) under the end of screw rod (9) is fixed with.
2. the basket of tumbling with adjustable weight function as claimed in claim 1; It is characterized in that: also be fixed with guide pole (2) on the upper flange of described basket body (6) of tumbling; Described balancing weight also is provided with mounting hole on (8); Guide pole (2) passes the mounting hole on the balancing weight (8), and guide pole (2) is parallel with described screw rod (9).
3. according to claim 1 or claim 2 the basket of tumbling with adjustable weight function; It is characterized in that: described top and the bottom of tumbling basket body (6) are equipped with flange; Be equipped with flange on top cover (1) and the bottom (5); Through bolt flange face is docked, make top cover (1) and bottom (5) fixing with the basket body (6) of tumbling respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203893448U CN202307170U (en) | 2011-10-13 | 2011-10-13 | Tipping basket with counterweight adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203893448U CN202307170U (en) | 2011-10-13 | 2011-10-13 | Tipping basket with counterweight adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307170U true CN202307170U (en) | 2012-07-04 |
Family
ID=46376015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203893448U Expired - Lifetime CN202307170U (en) | 2011-10-13 | 2011-10-13 | Tipping basket with counterweight adjusting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202307170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865888A (en) * | 2012-09-29 | 2013-01-09 | 北京航天控制仪器研究所 | Balance adjustment mechanism for turntable frame |
-
2011
- 2011-10-13 CN CN2011203893448U patent/CN202307170U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865888A (en) * | 2012-09-29 | 2013-01-09 | 北京航天控制仪器研究所 | Balance adjustment mechanism for turntable frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |