CN102237149B - Underwater sipping apparatus for nuclear reactor spent fuel damage detection - Google Patents

Underwater sipping apparatus for nuclear reactor spent fuel damage detection Download PDF

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Publication number
CN102237149B
CN102237149B CN2010101558642A CN201010155864A CN102237149B CN 102237149 B CN102237149 B CN 102237149B CN 2010101558642 A CN2010101558642 A CN 2010101558642A CN 201010155864 A CN201010155864 A CN 201010155864A CN 102237149 B CN102237149 B CN 102237149B
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valve
welded
air inlet
draining
cover plate
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CN102237149A (en
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罗文广
李劲松
陈启兵
彭军
袁志敏
李文钰
唐坤林
谢小明
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Nuclear Power Institute of China
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Nuclear Power Institute of China
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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

Abstract

The invention belongs to an apparatus for nuclear reactor spent fuel element damage detection, specifically an underwater sipping apparatus for the spent fuel element damage detection. The apparatus comprises a sipping container, a quick coupling, air inlet pipes, exhaust pipes, air inlet valves, air release valves, drainage pipes and the like. A main material of the apparatus is stainless steel. According to the apparatus provided by the present invention, batch radioactive gas samples required by the spent fuel element damage detection can be collected in a short time so as to provide high detection efficiency.

Description

Be used for the nuclear reactor spentnuclear fuel damaged detect sob the suction device under water
Technical field
The present invention relates to nuclear reactor spent fuel element damage detection device, specifically be used for the nuclear reactor spent fuel element damaged detect sob the suction device under water.
Background technology
In nuclear reactor spent fuel element breakage monitoring, the monitoring spent fuel element has or not 85The radgass such as Kr overflow, and are to judge whether one of damaged effective ways of spent fuel element.Wherein collect and overflow after the spent fuel element breakage 85The device of the radgass such as Kr is varied, all the type devices are all that single or multiple spent fuel elements are encapsulated one in the lead shield container at present, adopt charging under water, handling is carried out the capping operation after waterborne, by the gas in heating container or aqueous medium, collect then that spent fuel element cut place discharges 85The Kr radioactive nuclide, for detection of, whether damaged to judge spent fuel element.The type device detection efficiency is low, and complicated operation, and operating personnel are subjected to irradiation dose higher.
Summary of the invention
The object of the present invention is to provide a kind of for the nuclear reactor spentnuclear fuel damaged detect sob the suction device under water.This device can obtain the damaged test sample of nuclear reactor spent fuel element at short notice expeditiously.
Technical scheme of the present invention is as follows.
A kind of for the nuclear reactor spentnuclear fuel damaged detect sob the suction device under water, it is characterized in that: described sobbing under water inhaled device and comprised that rapid-acting coupling, inlet manifold, air inlet main valve, air inlet divide valve, draining main valve, tensimeter, draining to divide valve, supporting seat, sob and inhale container and main drain; Sob the top of inhaling container gland bonnet is installed, and be welded with admission line and water discharge line; Admission line divides valve to be connected rear and is unified into an inlet manifold with air inlet; The inlet manifold is connected with rapid-acting coupling with the air inlet main valve; Water discharge line divides valve to be connected rear and is unified into a main drain with draining; Main drain is connected with the draining main valve with tensimeter; Admission line and the water discharge line upper panel of supporting seat that is laid in, and divide valve to be connected valve to be connected with draining with air inlet respectively; Air inlet divides valve and draining to divide valve to be separately fixed on supporting seat; Supporting seat and bracing frame are welded to connect by supporting steel pipe; Hanger is welded on supporting seat.
Its supplementary features are following 3 technology contents.
The described admission line of inhaling device of sobbing under water has 5, and air inlet divides valve to have 5, and every admission line divides valve to be connected rear and is unified into an inlet manifold with an air inlet respectively; Water discharge line has 5, and draining divides valve to have 5, and every water discharge line divides valve to be connected rear and is unified into a main drain with a draining respectively.
The described suction container of sobbing is comprised of sealing bolt, bayonet socket, bolt hinge, back up pad, container floor, rising pipe, draft tube, cylindrical shell, V-type dovetail seal groove, cover plate hinge, cover plate and enhancing ring; The top of cylindrical shell is welded with bolt hinge, and the top is welded with cover plate hinge, and top is welded with draft tube, and the bottom is welded with container floor and drainpipe; Back up pad has 4, is welded on respectively the upper and lower of cylindrical shell; Cover plate is rotatable circular stainless steel cover plate, is provided with bayonet socket in the symmetric position of diameter; Sealing bolt is arranged on bolt hinge; The upper surface of cover plate is welded with enhancing ring, and the lower surface is provided with the V-type dovetail seal groove with the identical bore of cylindrical shell, is filled with gasket seal in seal groove.
The described suction container of sobbing has 5, is arranged on bracing frame side by side by set bolt and back up pad.
Effect of the present invention is: compare with background technology, the present invention adopts a plurality of spent fuel elements of a plurality of dry type of closed container under water encapsulation, collects respectively 85The Kr radioactive nuclide, for detection of.Can the batch capture damaged sample of this device, detection efficiency is high, and owing to being underwater operation, operating personnel are subjected to irradiation dose low.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is that of the present invention sobbing inhaled the structure of container schematic diagram.
Fig. 3 is use constitutional diagram of the present invention.
In figure: 1. rapid-acting coupling; 2. inlet manifold; 3. air inlet main valve; 4. air inlet divides valve; 5. draining main valve; 6. tensimeter; 7. draining divides valve; 8. hanger; 9. supporting seat; 10. supporting steel pipe; 11. set bolt; 12. sob the suction container; 13. water discharge line; 14. bracing frame; 15. admission line; 16. gland bonnet; 17. main drain; 18. sealing bolt; 19. bayonet socket; 20. bolt hinge; 21. back up pad; 22. container floor; 23. rising pipe; 24. draft tube; 25. cylindrical shell; 26.V type dovetail seal groove; 27. cover plate hinge; 28. cover plate; 29. enhancing ring; 30. pond.
Embodiment
Of the present invention sobbing under water inhaled device as shown in Figure 1, divide valve 4, draining main valve 5, tensimeter 6, draining to divide valve 7, hanger 8, supporting seat 9, supporting steel pipe 10, set bolt 11, sob and inhale container 12, water discharge line 13, bracing frame 14, admission line 15, gland bonnet 16, main drain 17 and form by rapid-acting coupling 1, inlet manifold 2, air inlet main valve 3, air inlet, installing main material is stainless steel.Sobbing suction container 12 has 5, is arranged on side by side on bracing frame 14 by set bolt 11, and each is sobbed the top of inhaling container 12 gland bonnet 16 is installed, and is welded with admission line 15 and water discharge line 13.The be laid in upper panel of supporting seat 9 of admission line 15 and water discharge line 13.Admission line 15 has 5, and air inlet divides valve 4 to have 5, and every admission line 15 divides valve 4 to be connected rear and is unified into an inlet manifold 2 with an air inlet respectively.Inlet manifold 2 is connected with rapid-acting coupling with air inlet main valve 3 and is connected.Water discharge line 13 has 5, and draining divides valve 7 to have 5, and every water discharge line 13 connects rear and is unified into a main drain 17.Main drain 17 is connected with draining main valve 5 with tensimeter 6.Air inlet divides valve 4 and draining sub valve 7 to be separately fixed on supporting seat 9.Supporting seat 9 and bracing frame 14 are welded to connect by two supporting steel pipes 10.Hanger 8 is welded on supporting seat (9).
Sob and inhale container 12 as shown in Figure 2, formed by sealing bolt 18, bayonet socket 19, bolt hinge 20, back up pad 21, container floor 22, rising pipe 23, draft tube 24, cylindrical shell 25, V-type dovetail seal groove 26, cover plate hinge 27, cover plate 28 and enhancing ring 29.The top of cylindrical shell 25 is welded with bolt hinge 20, and the top is welded with cover plate hinge 27, and the middle part is welded with draft tube 24, and the bottom is welded with container floor 22 and drainpipe 23.Back up pad 21 has 4, is welded on respectively the upper and lower of cylindrical shell 25.Cover plate 28 is rotatable circular stainless steel cover plate, and the upper surface is welded with enhancing ring 29, and when pulling enhancing ring 29, cover plate 28 is realized rotation by the cover plate hinge 27 that is welded on cylindrical shell 25.Symmetric position place with respect to cover plate hinge 27 on cover plate 28 diameters is provided with bayonet socket 19, sealing bolt 18 is arranged on bolt hinge 20, be convenient to rotary seal, sealing bolt 18 is realized rotation by the bolt hinge 20 that is welded on cylindrical shell 25, when closing cover plate, sealing bolt 18 snaps in bayonet socket 19, and rotary seal bolt 18 compresses bayonet socket 19 and cover plate 28.The lower surface of cover plate 28 is provided with V-type dovetail seal groove 26, is filled with the gasket seal for sealing in seal groove 26.Sobbing suction container 12 is connected and fixed with bracing frame 14 by the back up pad 21 that is welded on cylindrical shell 25.
Use state of the present invention is as shown in Figure 3: of the present inventionly sob under water that to inhale device be mainly that the breakage of the spent fuel element deposited for the dry type of dewatering detects.During use, by supporting seat 9, device is arranged on the pond 30 that has spent fuel element, by main drain 17 and draining main valve 5, water outlet is caused and preserve in pond 30.Sobbing suction container 12 for 5 is arranged on bracing frame (14) side by side by set bolt 11 and back up pad 21.Sob for 5 and inhale container 12 and all be in and preserve in the pond, form the water layer shielding of adequate thickness.Open under water and sob the gland bonnet 16 of inhaling container 12, the encapsulation spent fuel element.Rapid-acting coupling 1 is connected with compressed air system, start compressed air system, pass into the pressurized air of 0.2～0.5MPa, open air inlet main valve 3, draining main valve 5 and 5 air inlets and divide valve 4, open and close one by one again each draining and divide valve 7, sob with 5 the ponding of inhaling in container 12 with pressurized air and drain.After draining, ponding closes draining main valve 5, system is carried out pressurize test, after the pressurize stand the test, then with system unload and close whole turnover valves, make spent fuel element be in the dry type storage configuration, be convenient to and radgas (be mainly damaged spent fuel element 85The Kr radgas) be discharged into to sob and inhale in container 12.After certain resting period of process, rapid-acting coupling 1 is connected with the harvester of bleeding, start the harvester of bleeding, open air inlet main valve 3, and open and close one by one air inlet and divide valve 4, respectively each is sobbed suction container 12 and vacuumize, extract respectively each and sob the gas of inhaling in container 12, form the damaged test sample of spent fuel element.

Claims (2)

  1. One kind be used for the nuclear reactor spentnuclear fuel damaged detect sob the suction device under water, it is characterized in that: described sobbing under water inhaled device and comprised that rapid-acting coupling (1), inlet manifold (2), air inlet main valve (3), air inlet divide valve (4), draining main valve (5), tensimeter (6), draining to divide valve (7), supporting seat (9), sob and inhale container (12) and main drain (17); Sob the top of inhaling container (12) gland bonnet (16) is installed, and be welded with admission line (15) and water discharge line (13); Admission line (15) divides valve (4) to be connected rear and is unified into an inlet manifold (2) with air inlet; Inlet manifold (2) is connected 1 with air inlet main valve (3) with rapid-acting coupling) be connected; Water discharge line (13) divides valve (7) to be connected rear and is unified into a main drain (17) with draining; Main drain (17) is connected with draining main valve (5) with tensimeter (6); Admission line (15) and water discharge line (13) upper panel of supporting seat (9) that is laid in, and divide valve (4) to be connected valve (7) to be connected with draining with air inlet respectively; Air inlet divides valve (4) and draining to divide valve (7) to be separately fixed on supporting seat (9); Supporting seat (9) and bracing frame (14) are welded to connect by supporting steel pipe (10); Hanger (8) is welded on supporting seat (9).
  2. 2. sob the suction device under water according to damaged detection of nuclear reactor spentnuclear fuel claimed in claim 1, it is characterized in that: the described admission line (15) of inhaling device of sobbing under water has 5, air inlet divides valve (4) to have 5, and every admission line (15) divides valve (4) to be connected rear and is unified into an inlet manifold (2) with an air inlet respectively; Water discharge line (13) has 5, and draining divides valve (7) to have 5, and every water discharge line (13) divides valve (7) to be connected rear and is unified into a main drain (17) with a draining respectively.
    3. sob the suction device under water according to damaged detection of the described nuclear reactor spentnuclear fuel of claim 1 or 2, it is characterized in that: described sobbing inhaled container (12) by sealing bolt (18), bayonet socket (19), bolt hinge (20), back up pad (21), container floor (22), rising pipe (23), draft tube (24), cylindrical shell (25), V-type dovetail seal groove (26), cover plate hinge (27), cover plate (28) and enhancing ring (29) form; The top of cylindrical shell (25) is welded with bolt hinge (20), and the top is welded with cover plate hinge (27), and top is welded with draft tube (24), and the bottom is welded with container floor (22) and drainpipe (23); Back up pad (21) has 4, is welded on respectively the upper and lower of cylindrical shell (25); Cover plate (28) is rotatable circular stainless steel cover plate, and the symmetric position place with respect to cover plate hinge (27) on its diameter is provided with bayonet socket (19), and sealing bolt (18) is arranged on bolt hinge (20); The upper surface of cover plate (28) is welded with enhancing ring (29), and the lower surface is provided with the V-type dovetail seal groove (26) with the identical bore of cylindrical shell (25), and seal groove is filled with gasket seal in (26).
    4. sob the suction device under water according to damaged detection of nuclear reactor spentnuclear fuel claimed in claim 3, it is characterized in that: the described suction container (12) of sobbing has 5, is arranged on side by side on bracing frame (14) by set bolt (11) and back up pad (21).
CN2010101558642A 2010-04-22 2010-04-22 Underwater sipping apparatus for nuclear reactor spent fuel damage detection Active CN102237149B (en)

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Publication number Priority date Publication date Assignee Title
CN103247359A (en) * 2013-04-23 2013-08-14 中国核动力研究设计院 Online sipping detection system for integrity detection for fuel element cladding in nuclear power plant
CN104361916B (en) * 2014-09-19 2017-02-15 武汉海王核能装备工程有限公司 Typical nuclide monitor of fuel element failure
CN104505132B (en) * 2015-01-15 2017-03-08 中国核动力研究设计院 Irradiation after-burning charge bar bubbles of vacuum method leak hunting box and leak detection system and its leak hunting method
CN106404311A (en) * 2015-07-30 2017-02-15 苏州热工研究院有限公司 Spent fuel assembly damage detection apparatus
FR3062946B1 (en) * 2017-02-15 2021-07-23 Areva Np DEVICE AND PROCEDURE FOR TIGHTNESS CONTROL BY WIPING A NUCLEAR FUEL ASSEMBLY
CN108182980A (en) * 2017-11-27 2018-06-19 中核控制系统工程有限公司 It is a kind of to sob the air-channel system for inhaling detection device online suitable for fuel can
CN109495987B (en) * 2018-10-24 2021-04-30 四川同人精工科技有限公司 Electric heating element deformation detection control system
CN109599196B (en) * 2018-12-19 2019-08-09 西安交通大学 Fission gas leakage measuring instrumentation experimental provision and method after a kind of fuel element failure
CN113674886B (en) * 2020-05-15 2023-11-28 国核电站运行服务技术有限公司 Movable sampling gas acquisition device for offline damage detection of nuclear fuel

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