CN205282115U - Multi -functional absorption container of highly radioactive foreign matter under water - Google Patents
Multi -functional absorption container of highly radioactive foreign matter under water Download PDFInfo
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- CN205282115U CN205282115U CN201520678050.5U CN201520678050U CN205282115U CN 205282115 U CN205282115 U CN 205282115U CN 201520678050 U CN201520678050 U CN 201520678050U CN 205282115 U CN205282115 U CN 205282115U
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Abstract
The utility model relates to a multi -functional absorption container of highly radioactive foreign matter under water can salvage at completion highly radioactive foreign matter under the operating mode of water shielding through using the fishing tool of dust catcher cooperation under water to can preserve the highly radioactive foreign matter in fishing tool, so that develop the analysis work of collecting evidence after the salvage. Multi -functional absorption container of highly radioactive foreign matter under water need not to prepare large -scale radioactivity foreign matter cask, can transport the highly radioactive foreign matter that salvages to spentnuclear fuel storage water pond and keep in to can take out it in spentnuclear fuel storage water pond when needing at any time, collect evidence and the analysis. The utility model discloses overhaul time limit for a project and a large amount of high level waste post processing equipment cost have been saved to the condition of providing convenience for the technical analysis in later stage.
Description
Technical field
This utility model relates to one high radioactivity foreign body multifunctional ceiling extracting container under water, salvage by using underwater duster to coordinate fishing tool can complete high radioactivity foreign body under the operating mode of water shielding, and can high radioactivity foreign body be deposited in fishing tool, in order to carry out the analysis evidence obtaining work after salvaging.
Background technology
Run at nuclear power station, in the process of overhaul, it has been a kind of inevitably work that maintainer carries out fishing underwater foreign matters, and especially power plant during refuelling pool high water level, high radioactivity foreign body occurs and must process during overhaul in core region. And once occur in that foreign body in the operation system in power station, the very big hidden danger of nuclear plant safety stable operation can be become, even initiated core security incident. So the foreign body found must being salvaged, collecting evidence and being analyzed, to assess relevant device situation.
Salvage to high radioactivity foreign body is extremely complex, especially the highly radioactive foreign body of complicated position is salvaged, the salvage of finding foreign body should be completed, avoid because high radioactivity foreign body enters nondecomposable marine salvage equipment body interior again simultaneously, and cause marine salvage equipment body to become high radioactivity equipment, cause larger range of high-level waste to produce. Also need to avoid coming off in foreign body drift and transfer process simultaneously in salvaging process, produce secondary foreign body or the uncontrollable phenomenon of foreign body, and cause the lifting of larger range of underwater installation, parts to remove and salvage. If this foreign body is high radioactivity foreign body, then there is also the later stage carries out the work such as foreign body evidence obtaining, analysis under water.
Current foreign body marine salvage equipment and technique are substantially all just for the salvaging process of foreign body, it does not have the foreign body after considering the risk control in the salvaging of high radioactivity foreign body and salvaging processes the work such as problem, and later stage forensics analysis. And current foreign body marine salvage equipment volume is all relatively larger, is not particularly suitable for carrying out foreign body salvage in core region. And in the process salvaged, if foreign body is positioned at reactor core, because surrounding devices is high radioactivity equipment, cannot pass through to measure to judge whether this foreign body is high radioactivity foreign body, if so rashly using general marine salvage equipment, then easily cause high radioactivity foreign body and remain in marine salvage equipment body interior or be pasted onto marine salvage equipment surface. Produce marine salvage equipment and need to do the risk of shielding processing.
Due to the particularity of high radioactivity foreign body, the later stage after salvaging processes becomes a very serious problem in fact, especially in-pile component body part, fuel assembly screen work, associated component fragment or the metallic foreign body of process operation a period of time in reactor core. Except with shifting or process these foreign bodies except large-scale lead screen container, and large-scale lead screen container needs the calculating of designing institute, demonstration, design, and look for producer to customize, need substantial amounts of fund and time, if being only a small pieces high radioactivity foreign body to remove to prepare large-scale lead screen container also Radwastes treatment for the later stage and bring great pressure, there are the daily storage of the large-scale lead screen container of high radioactivity foreign body and management to there is also significantly high risk simultaneously. For salvaging requirement more than meeting, it is necessary to a kind of fishing process of invention, coordinate relevant fishing tool, complete the salvaging of high radioactivity foreign body.
Summary of the invention
The purpose of this utility model is in that by remote manipulation, the high radioactivity foreign body completing multiple position under water is salvaged for existing equipment and technology defect, the relevant fishing tool of invention one.
For reaching above-mentioned purpose, technical solution adopted in the utility model is:
One is high radioactivity foreign body multifunctional ceiling extracting container under water, including suction inlet, filter screen, cavity, suction pipe, joint, upper cover, location gudgeon, non-return valve; The sucker of upper cover is inserted in suction inlet one end, and the other end connects with the joint being connected flexible pipe; At the back side of upper cover, grid-shaped metal filter screen is installed; Being provided with suction pipe in the middle of cavity bottom, cavity bottom is provided with non-return valve; One in two joints is welded on upper cover, and another is arranged on operation stock, and joint, when being connected with operation stock, can drive upper cover to rotate by rotation process stock; Upper cover and cavity are threaded connection, and suction inlet connects underwater duster; In the location gudgeon being arranged on cavity inserts the temporary base of multifunctional ceiling extracting container or transports the locating slot of container under water.
Described suction inlet is be arranged on the one section of short tube covered, and seals with Type of Welding, and together with top cover combination, this short tube possesses the function completing fast insert-pull at a distance.
Female thread is arranged at described cavity top, and the absorption hole having in the middle of cavity bottom is provided with suction pipe, adopts welding to be fixed and seal, and cavity bottom is drawn hole place and is provided with non-return valve.
Having a Storage tray in the middle of the temporary base of described multifunctional ceiling extracting container, multifunctional ceiling extracting container can vertically be put into temporary base, multifunctional ceiling extracting container can complete the opening and closing movement of upper cover in temporary base.
The described container of transport under water is deposited under water in fuel transport dolly fuel-basket, extracts and insert under fuel-basket is in plumbness.
Having the beneficial effect that acquired by this utility model
The foreign body multifunctional ceiling extracting container of high radioactivity under water described in the utility model and fishing process, without preparing large-scale radioactivity foreign body cask flask, the high radioactivity foreign body salvaged out can be transported to spentnuclear fuel storage pond keep in, and it can be stored taking-up in pond at spentnuclear fuel when needing at any time, carry out collecting evidence and analyzing. This technique saves overhaul duration and substantial amounts of high-level waste postprocessing device expense, and for condition that the technical Analysis in later stage is provided convenience.
This Processes and apparatus completes to implement salvage after finishing assembly completely under water; High radioactivity foreign body can be salvaged and complete the work such as the transhipment in later stage, analysis, storage by this Processes and apparatus. This Processes and apparatus can be avoided designing, buying large-scale cask flask in high radioactivity foreign body processing procedure, saves time and fund. This technique can complete the foreign body that the radioactivity waters (such as: the radiation devices such as reactor core position reactor core lower plate and flow distribution baffle are spatially) to conventional open radioactivity waters and small space exists and salvage; Fishing device is provided with anti-suction apparatus and non-return valve, it can be ensured that the foreign body of salvaging is retained in the cavity of fishing device; Fishing device can design the device of difformity, size according to the type of concrete foreign body, utilizes same high-power underwater duster to complete the fishing operation of multiple foreign body; It is operated by technique to ensure that in salvaging process, foreign body does not drift about.
Accompanying drawing explanation
Fig. 1 is the flow chart of high radioactivity foreign body fishing process;
Fig. 2 is that high radioactivity foreign body salvages position view;
Fig. 3 is multifunctional ceiling extracting container schematic diagram;
Fig. 4 is the temporary base schematic diagram of multifunctional ceiling extracting container;
Fig. 5 transports container schematic diagram under water;
In figure: 1, fuel Factory Building moves crane span structure; 2, operation stock; 3, static organ; 4, reactor core moves over crane span structure; 5, flexible pipe is connected; 6, irradiated fuel store shelf; 7, the temporary base of multifunctional ceiling extracting container; 8, fuel transport dolly; 9, fuel transport passage; 10, container is transported under water; 11, multifunctional ceiling extracting container; 12, reactor core; 13, underwater duster; 14, suction inlet; 15, filter screen; 16, cavity; 17, suction pipe; 18, joint; 19, upper cover; 20, location gudgeon; 21, non-return valve; 22, pallet locating slot; 23, container locating slot is transported under water.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
As shown in Fig. 15, under multifunctional water described in the utility model, high radioactivity foreign body multifunctional ceiling extracting container 11 includes suction inlet 14, filter screen 15, cavity 16, suction pipe 17, joint 18, upper cover 19, location gudgeon 20, non-return valve 21, reactor core foreign body completes to salvage by multifunctional ceiling extracting container 11, and by the bunkering screen work 6 with the binding transport to bunkering Factory Building that transport container 10 under water. Suction inlet 14 is the one section of short tube being arranged on upper cover 19, and this short tube possesses the function completing fast insert-pull at a distance; The sucker of upper cover 19 is inserted in suction inlet 14 one end, and seals with the form of welding, combines with upper cover 19, and the other end connects with the joint being connected flexible pipe 5, can complete plug work under water. At the back side of upper cover 19, grid-shaped metal filter screen 15 is installed, after foreign body is inhaled into cavity 16, is intercepted in cavity 16 by filter screen 15, underwater duster 13 inside will not be entered along with current, without the problem producing high radioactivity filter element post processing. Cavity 16 is a container, and female thread is arranged at cavity 16 top, has an absorption hole, in order to install suction pipe 17 in the middle of bottom cavity 16. Draw hole place bottom cavity 16 and one non-return valve 21 is installed, foreign body can be stayed in cavity 16, will not stopping transport because of transhipment or underwater duster and cause foreign body to skid off, cavity 16 can select according to the device space situation of foreign body size and foreign body region. Suction pipe 17 is arranged on the absorption hole of cavity 16 bottom, adopts welding to be fixed and seal, and suction pipe 17 can select according to the device space situation of foreign body size and foreign body region. Joint 18 is the joint that can complete remote disassembling under water, and one of them weld is at upper cover 19, and another joint is arranged on operation stock 2 and can complete under water to shirk and connect. Joint 18, when being connected with operation stock 2, can drive the rotation of upper cover 19 by rotation process stock 2, reaches the work completing dismounting under water and installing. Upper cover 19 and cavity 16 are threaded connection, suction inlet 14 on upper cover 19 connects underwater duster 13, joint 18 attended operation stock 2 on upper cover 19, stock 2 can be operated by and control the lifting of multifunctional ceiling extracting container 11, movement, location, it is possible to complete the opening and closing of upper cover 19 under water.
Multifunctional ceiling extracting container 11 is deposited in the temporary base 7 of multifunctional ceiling extracting container, under water transport container 10, the location gudgeon 20 being arranged on cavity 16 inserts the temporary base 7 of multifunctional ceiling extracting container or transports in container locating slot 23 under water and can position for multifunctional ceiling extracting container 11, and keeps being relatively fixed. Check (non-return) valve 21 is positioned at the bottom of cavity 16. Along with the operating of underwater duster 13 and stopping, quick opening and closing can be completed, foreign body is retained in cavity 16 internal. The temporary base 7 of multifunctional ceiling extracting container is a temporary base that can lift at a distance, has a Storage tray, multifunctional ceiling extracting container 11 can vertically be put into temporary base in the middle of base, and multifunctional ceiling extracting container 11 can complete the opening and closing movement of upper cover 19 in temporary base. Transport container 10 can be deposited under water in fuel transport dolly 8 fuel-basket under water, under fuel-basket is in plumbness, extracts and inserts. Multifunctional ceiling extracting container 11 can be put under water in transport container 10, and can prevent from skidding off transport container 10 under water in transportation.
The fishing process of the foreign body of high radioactivity under water described in the utility model comprises the steps:
1. by underwater video device, confirm size and the position of foreign body, here checking foreign body in the reactor core 12 the most complicated in position, reactor core 12 is high radioactivity region, it is impossible to confirm whether foreign body is high radioactivity foreign body by radiation dose measurement device under water;
2. foreign body salvages system assembles and connection: reactor core moves over one static organ 3 of connection under crane span structure 4 hanging device, 3 times attended operation stocks 2 of static organ, operation stock connects multifunctional ceiling extracting container 11 2 times, the suction inlet 14 of multifunctional ceiling extracting container 11 is installed one section and connects flexible pipe 5, the other end connecting flexible pipe 5 connects a underwater duster 13, underwater duster 13 is placed on the place not affecting operation bottom refuelling pool, without movement in salvaging process, temporary for multifunctional ceiling extracting container base 7 is placed in low dosage region or fuel Factory Building transport channel 9. To transport container 10 under water and be arranged in fuel transport dolly 8, fuel transport dolly 8 rests in fuel Factory Building end, and is in plumbness.
3. marine salvage equipment assembles and salvages preparation
3.1. salvage precondition to confirm: fuel Factory Building moves crane span structure 1, and reactor core moves over crane span structure 4, irradiated fuel store shelf 6, and fuel transport dolly 8 is all for upstate, and fuel transport passage 9 is unobstructed, and function is normal;
3.2. the temporary base of multifunctional ceiling extracting container is deposited in the fuel transport passage 9 of fuel Factory Building;
3.3. will transport container 10 under water and put into fuel transport dolly 8, fuel transport dolly 8 will be rested in reactor building terminal, and container 10 will be transported under water be in plumbness.
3.4. multifunctional ceiling extracting container upper cover 19 is screwed into cavity 16;
3.5., underwater duster connects flexible pipe 5 be connected with multifunctional ceiling extracting container suction inlet 14;
3.6. by complete for underwater duster 13 trail run, slowly hang in water and be placed on the place not affecting salvage;
3.7. moving at reactor core and be attached with static organ 3 between the hanging apparatus of crane span structure 4 and underwater operation stock 2, the other end of operation stock 2 is connected with multifunctional ceiling extracting container joint 18;
3.8. multifunctional ceiling extracting container 11 is slowly put into water, lifting, mobile multifunctional absorption container 11 is controlled with operation stock 2, after multifunctional ceiling extracting container 11 all enters water, can test running underwater duster 13 once, confirm duty, and guarantee to be in cavity 16 water-filling state rather than cavity, stop underwater duster 13 after test running and work;
4. multifunctional ceiling extracting container 11 is moved to directly over foreign body, by slowly adjusting position alignment foreign body, operation operation stock 2 slowly decline multifunctional ceiling extracting container 11;
5. stop declining when multifunctional ceiling extracting container 11 drops to proper height above foreign body, the process declined can operate according to foreign body position adjustments the length of stock 2, finally suction pipe 17 is adjusted directly over foreign body;
6. the position according to foreign body, again accurately adjusts and confirms the position of multifunctional ceiling extracting container 11, it is ensured that suction pipe 17 is directed at foreign body, open underwater duster 13;
7. stable, decline multifunctional ceiling extracting container 11 slowly, until foreign body is inhaled in cavity 16;
8. shut down underwater duster 13, stablizes, promotes multifunctional ceiling extracting container 11 slowly;
9. check that whether foreign body is also in original place with underwater video device, and under the operating mode of water shielding, slow elevation operation stock 2, until proper height, mobile reactor core moves over crane span structure 4, multifunctional ceiling extracting container 11 is hoisted to not high active area, under water absorption flexible pipe 5 is extracted from suction inlet 14;
10. with the measurement of radiation measurement assembly multifunctional ceiling extracting container 11 surrounding under water under water, judge whether to have in multifunctional ceiling extracting container 11 high radioactivity material, as not abnormal, then multifunctional ceiling extracting container 11 can be taken out pond under radiation monitoring, the foreign body in cavity 16 is processed. Radioactivity display in measurement result multifunctional ceiling extracting container 11 is abnormal, then must process technique according to high radioactivity foreign body and carry out the foreign body transhipment in later stage and process.
11. multifunctional ceiling extracting container 11 is transported under water above transport container 10, slow step-down operation stock 2, multifunctional ceiling extracting container 11 is put under water in transport container 10, and gudgeon 20 is inserted 23 position in transport container locating slot under water;
12. operation stock 2 and multifunctional ceiling extracting container 11 are disengaged, and transport container 10 is in level, by travelling bogie 8 under water, transport container 10 is transported to fuel Factory Building terminal, and is in plumbness;
13. movable fuel Factory Building moves crane span structure 1 to transporting directly over container 10 under water;
14. install operation stock 2 on the hanging apparatus that fuel Factory Building moves crane span structure 1, operation stock 2 is connected with joint 18 assembly, multifunctional ceiling extracting container 11 is slowly lifted out transport container 10 under water;
15. movable fuel Factory Building moves crane span structure 1 above pallet under water, slow decline multifunctional ceiling extracting container 11, and multifunctional ceiling extracting container 11 multifunctional ceiling extracting container is kept in base 7, and confirm the position of location gudgeon 20 and pallet locating slot 22;
16. as need to be kept in or transport, then disengaged from joint 18 by operation stock 2, multifunctional ceiling extracting container 11 is temporarily stored in the temporary base 7 of multifunctional ceiling extracting container;
17. as upper cover 19 need to be opened, then keep the connection status of operation stock 2 and joint 18; Rotation process stock 2, suction means upper cover 19 can screw off from cavity 16;
18. as completed to assemble under water, the operation stock 2 of removable attended operation joint, moves upper cover 19 to suction means cavity 16, slow step-down operation stock 2;
19. be directed at by upper cover 19 above cavity 16, rotating upper cover slowly, the screw-threaded engagement of upper cover 19 and cavity 16, until screwing;
20. disengaged from joint 18 by operation stock 2, multifunctional ceiling extracting container 11 deposits in pallet 7;
As foreign body being placed individually into Spent Fuel Pool or carries out Inspection and analysis, foreign body in cavity 16 can be checked or transfer processing after screwing off upper cover 19, the spentnuclear fuel storage shelf 6 transported in high radioactivity foreign body transport to spentnuclear fuel pond can be passed through and store high radioactivity foreign body, be used as this method equally and high radioactivity foreign body is analyzed from taking-up in Spent Fuel Pool, checks; As foreign body is analyzed by follow-up also needing to, then foreign body can be temporarily retained in multifunctional ceiling extracting container 11, be placed on pallet or under water transport container 11 in treat that next step uses.
Claims (5)
1. a high radioactivity foreign body multifunctional ceiling extracting container under water, it is characterised in that: include suction inlet (14), filter screen (15), cavity (16), suction pipe (17), joint (18), upper cover (19), location gudgeon (20), non-return valve (21); The sucker of upper cover (19) is inserted in suction inlet (14) one end, and the other end connects with the joint being connected flexible pipe (5); At the back side of upper cover (19), grid-shaped metal filter screen (15) is installed; Cavity (16) is provided with suction pipe (17) in the middle of bottom, and cavity (16) bottom is provided with non-return valve (21); One in two joints (18) is welded on upper cover (19), another is arranged in operation stock (2), joint (18), when being connected with operation stock (2), can drive upper cover (19) to rotate by rotation process stock (2); Upper cover (19) and cavity (16) are threaded connection, and suction inlet (14) connects underwater duster (13); It is arranged in location gudgeon (20) on cavity (16) inserts the temporary base (7) of multifunctional ceiling extracting container or transport the locating slot (23) of container (10) under water.
2. the foreign body multifunctional ceiling extracting container of high radioactivity under water according to claim 1, it is characterized in that: described suction inlet (14) is the one section of short tube being arranged on upper cover (19), seal with Type of Welding, combining with upper cover (19), this short tube possesses the function completing fast insert-pull at a distance.
3. the foreign body multifunctional ceiling extracting container of high radioactivity under water according to claim 1, it is characterized in that: female thread is arranged at described cavity (16) top, the absorption hole having in the middle of cavity (16) bottom is provided with suction pipe (17), adopting welding to be fixed and seal, cavity (16) bottom is drawn hole place and is provided with non-return valve (21).
4. the foreign body multifunctional ceiling extracting container of high radioactivity under water according to claim 1, it is characterized in that: in the middle of the temporary base (7) of described multifunctional ceiling extracting container, have a Storage tray, multifunctional ceiling extracting container (11) can vertically be put into temporary base, and multifunctional ceiling extracting container (11) can complete the opening and closing movement of upper cover (19) in temporary base.
5. the foreign body multifunctional ceiling extracting container of high radioactivity under water according to claim 1, it is characterized in that: the described container of transport under water (10) is deposited under water in fuel transport dolly (8) fuel-basket, extracts and insert under fuel-basket is in plumbness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520678050.5U CN205282115U (en) | 2015-09-02 | 2015-09-02 | Multi -functional absorption container of highly radioactive foreign matter under water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520678050.5U CN205282115U (en) | 2015-09-02 | 2015-09-02 | Multi -functional absorption container of highly radioactive foreign matter under water |
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| CN205282115U true CN205282115U (en) | 2016-06-01 |
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| CN201520678050.5U Active CN205282115U (en) | 2015-09-02 | 2015-09-02 | Multi -functional absorption container of highly radioactive foreign matter under water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486177A (en) * | 2015-09-02 | 2017-03-08 | 中核核电运行管理有限公司 | One kind high radioactivity foreign body multifunctional ceiling extracting container and fishing process under water |
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2015
- 2015-09-02 CN CN201520678050.5U patent/CN205282115U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486177A (en) * | 2015-09-02 | 2017-03-08 | 中核核电运行管理有限公司 | One kind high radioactivity foreign body multifunctional ceiling extracting container and fishing process under water |
| CN106486177B (en) * | 2015-09-02 | 2018-05-18 | 中核核电运行管理有限公司 | A kind of underwater high radioactivity foreign matter multifunctional ceiling extracting container and fishing process |
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