CN202307174U - Detachable movable fuel basket - Google Patents

Detachable movable fuel basket Download PDF

Info

Publication number
CN202307174U
CN202307174U CN2011203889387U CN201120388938U CN202307174U CN 202307174 U CN202307174 U CN 202307174U CN 2011203889387 U CN2011203889387 U CN 2011203889387U CN 201120388938 U CN201120388938 U CN 201120388938U CN 202307174 U CN202307174 U CN 202307174U
Authority
CN
China
Prior art keywords
flange
fuel basket
fuel
top cover
main body
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
Application number
CN2011203889387U
Other languages
Chinese (zh)
Inventor
李涛
陈梁
何少华
王聪
李云
王释伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qinshan Nuclear Power Co Ltd
Original Assignee
Qinshan Nuclear Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qinshan Nuclear Power Co Ltd filed Critical Qinshan Nuclear Power Co Ltd
Priority to CN2011203889387U priority Critical patent/CN202307174U/en
Application granted granted Critical
Publication of CN202307174U publication Critical patent/CN202307174U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The utility model belongs to a pressurized water reactor nuclear power station fuel device, and particularly discloses a detachable movable fuel basket which comprises a main fuel basket body; a detachable top cover is arranged at the upper end of the main fuel basket body, a detachable bottom cover is arranged at the lower end of the main fuel basket body, and a rotating shaft is arranged in the middle of the main fuel basket body; the main fuel basket body has a hollow cylinder-shaped structure with a rectangular cross section, and a rectangular hole is arranged at the side of the main fuel basket body; an upper flange is arranged at the upper end of the rectangular hole, and a lower flange is positioned at the lower end of the rectangular hole; and the upper flange is provided with an upper flange locating pin, and the lower flange is provided with a lower flange locating pin. The detachable movable fuel basket can be used for safely carrying an irradiated fuel assembly, so that the irradiated fuel assembly can be quickly transferred to the places with different elevations in the extremely strong radioactive environment, and the detachable movable fuel basket has important significance for the work of repairing the damage of a fuel rod or a spacer grid of the irradiated fuel assembly.

Description

A kind of detachable mobile fuel basket
Technical field
The utility model belongs to pressurized-water reactor nuclear power plant fuel bogey, is specifically related to a kind of mobile fuel basket.
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 repeatedly on the workbench of different level, to carry out.Yet; Fuel assembly behind the irradiation self has been activated and has become radioactive source, has extremely strong radioactivity, the staff can't be under normal condition near; Need be down in boron water shielding, use a kind of special device carrying fuel assembly and move to the workbench place of corresponding absolute altitude.
Summary of the invention
The purpose of the utility model is to provide a kind of can the realization quickly and easily that fuel assembly behind the irradiation is transferred to different level workbench place, thus the detachable mobile fuel basket of repairing.
The technical scheme of the utility model is following:
A kind of detachable mobile fuel basket, it comprises fuel basket main body, and described fuel basket main body upper end is provided with dismountable top cover, and the lower end is provided with dismountable bottom; Described fuel basket main body middle part is provided with turning axle.
In above-mentioned detachable mobile fuel basket: described fuel basket main body is the rectangular hollow cylindrical structure in cross section; The side is provided with rectangular opening, and its upper end is provided with upper flange, and the lower end is provided with lower flange; Upper flange is provided with the upper flange register pin, and lower flange is provided with the lower flange register pin.
In above-mentioned detachable mobile fuel basket: described upper flange and lower flange are rectangle, and the center is respectively equipped with rectangular opening, and its size is consistent with the cross-sectional sizes of fuel basket main body, and flange face is provided with bolt hole.
In above-mentioned detachable mobile fuel basket: described top cover lower end is provided with the top cover flange, and this top cover flange is provided with top cover flange dowel hole and coupling bolt.
In above-mentioned detachable mobile fuel basket: described bottom upper end is provided with the bottom flange, and this bottom flange is provided with bottom flange dowel hole and coupling bolt.
The beneficial effect of the utility model is: use this to move the fuel basket; Can carry fuel assembly behind the irradiation safely; Thereby realize quickly fuel assembly behind the irradiation being transferred to the different level place under the extremely strong radioactive environment, repair is carried out in the fuel rod breakage of fuel assembly behind the irradiation or grid spacer damage be significant.
Description of drawings
The detachable mobile fuel basket structural representation that Fig. 1 provides for the utility model;
Fig. 2 is a fuel basket agent structure synoptic diagram;
Fig. 3 is the upper flange vertical view;
Fig. 4 is a capping top view;
Fig. 5 is the bottom upward view;
Among the figure: 1. top cover; 2. fuel basket main body; 3. bottom; 4 upper flange register pins; 5. upper flange; 6. fuel basket panel; 7. turning axle; 8. lower flange; 9. lower flange register pin; 10. bolt hole; 11. top cover flange; 12. coupling bolt; 13. top cover flange dowel hole; 14. bottom flange; 15. bottom flange dowel hole.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
As shown in Figure 1, fuel basket main body 2 is fixedly connected through coupling bolt 12 with top cover 1, and fuel basket main body 2 is fixedly connected through coupling bolt 12 with bottom 3.At the centre position of fuel basket main body 2 fixed installation turning axle 7.
Like Fig. 2, fuel basket main body 2 structures shown in Figure 3; It is a hollow cylindrical structure that the cross section is rectangular, its upper end fixed installation upper flange 5, lower end fixed installation lower flange 8; Upper flange 5 is through the upper flange register pin 4 that is threaded, and lower flange 8 is through the lower flange register pin 9 that is threaded.Fuel basket panel 6 is a pair of side on this fuel basket main body 2, is processed with rectangular opening on it, turning axle 7 be fixedly mounted on fuel basket main body 2 another on the side.
As shown in Figure 3, upper flange 5 is a rectangle, and the center is a rectangular opening, and its size is consistent with the cross-sectional sizes of fuel basket main body 2, and on flange face, is processed with bolt hole 10.The same bolt hole 10 that on the flange face of lower flange 8, also is processed with.
Like Fig. 1 and shown in Figure 4, the lower end of top cover 1 is welded with top cover flange 11, utilizes coupling bolt 12 with bolt hole 10 top cover 1 to be fixedly connected with upper flange 5.On top cover flange 11, also be processed with top cover flange dowel hole 13, it matches with upper flange register pin 4 on the upper flange 5, location top cover flange 11.
Equally, like Fig. 1 and shown in Figure 5, the upper end of bottom 3 is welded with bottom flange 14, utilizes coupling bolt 12 with bolt hole 10 bottom 3 to be fixedly connected with lower flange 8.On bottom flange 14, also be processed with bottom flange dowel hole 15, it matches positioning bottom cap flange 14 with lower flange register pin 9 on the lower flange 8.
During assembling, at first turn on fuel basket top cover coupling bolt 12, top cover 1 and fuel basket main body 2 are separated; Damaged fuel assembly behind the irradiation is hung in the fuel basket main body 2; Return on basket top cover 1 to the fuel basket main body 2 of charging; Tighten fuel basket top cover coupling bolt 12; Fuel basket integral body is vertically winched to the workbench of corresponding absolute altitude from its bracing or strutting arrangement; In like manner, can dismounting fuel basket bottom and the whole workbench place that moves to corresponding absolute altitude.

Claims (5)

1. detachable mobile fuel basket, it comprises fuel basket main body (2), it is characterized in that: described fuel basket main body (2) upper end is provided with dismountable top cover (1), and the lower end is provided with dismountable bottom (3); Described fuel basket main body (2) middle part is provided with turning axle (7).
2. detachable mobile fuel basket as claimed in claim 1; It is characterized in that: described fuel basket main body (2) is the rectangular hollow cylindrical structure in cross section; The side is provided with rectangular opening, and its upper end is provided with upper flange (5), and the lower end is provided with lower flange (8); Upper flange (5) is provided with upper flange register pin (4), and lower flange (8) is provided with lower flange register pin (9).
3. according to claim 1 or claim 2 detachable mobile fuel basket; It is characterized in that: described upper flange (5) and lower flange (8) are rectangle; The center is respectively equipped with rectangular opening, and its size is consistent with the cross-sectional sizes of fuel basket main body (2), and flange face is provided with bolt hole (10).
4. detachable mobile fuel basket as claimed in claim 3 is characterized in that: described top cover (1) lower end is provided with top cover flange (11), and this top cover flange (11) is provided with top cover flange dowel hole (13) and coupling bolt (12).
5. detachable mobile fuel basket as claimed in claim 3 is characterized in that: described bottom 3 upper ends are provided with bottom flange (14), and this bottom flange (14) is provided with bottom flange dowel hole (15) and coupling bolt (12).。
CN2011203889387U 2011-10-13 2011-10-13 Detachable movable fuel basket Expired - Lifetime CN202307174U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203889387U CN202307174U (en) 2011-10-13 2011-10-13 Detachable movable fuel basket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203889387U CN202307174U (en) 2011-10-13 2011-10-13 Detachable movable fuel basket

Publications (1)

Publication Number Publication Date
CN202307174U true CN202307174U (en) 2012-07-04

Family

ID=46376019

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203889387U Expired - Lifetime CN202307174U (en) 2011-10-13 2011-10-13 Detachable movable fuel basket

Country Status (1)

Country Link
CN (1) CN202307174U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105023623A (en) * 2015-06-24 2015-11-04 中广核核电运营有限公司 Nuclear fuel assembly repair device and method
WO2016161728A1 (en) * 2015-04-08 2016-10-13 中科华核电技术研究院有限公司 Novel choke plug assembly for radioactive source preparation in pressurized water reactor, and radioactive rod

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016161728A1 (en) * 2015-04-08 2016-10-13 中科华核电技术研究院有限公司 Novel choke plug assembly for radioactive source preparation in pressurized water reactor, and radioactive rod
CN105023623A (en) * 2015-06-24 2015-11-04 中广核核电运营有限公司 Nuclear fuel assembly repair device and method
CN105023623B (en) * 2015-06-24 2017-10-10 中广核核电运营有限公司 Nuclear fuel assembly prosthetic device and method

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CX01 Expiry of patent term
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Granted publication date: 20120704