CN104751925A - Manufacturing method for CNFC-3G new fuel transportation container - Google Patents
Manufacturing method for CNFC-3G new fuel transportation container Download PDFInfo
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- CN104751925A CN104751925A CN201310745603.XA CN201310745603A CN104751925A CN 104751925 A CN104751925 A CN 104751925A CN 201310745603 A CN201310745603 A CN 201310745603A CN 104751925 A CN104751925 A CN 104751925A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
- G21F5/008—Containers for fuel elements
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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Abstract
The invention belongs to the technical field of manufacturing of nuclear fuel transportation containers and particularly relates to a manufacturing method for a CNFC-3G new fuel transportation container. The manufacturing method for the CNFC-3G new fuel transportation container comprises the following steps: step 1, molding upper and lower shells; step 2, manufacturing and machining upper and lower shell assemblies; step 3, manufacturing and machining a supporting frame; step 4, assembling the whole body of the transportation container; step 5, detecting the perpendicularity; step 6, carrying out loading and unloading tests; step 7, carrying out static loading and movable loading tests; step 8, sealing and carrying out a safety valve opening test; and step 9, making up paint, cleaning, packaging and transporting. According to the manufacturing method, the automatic manufacturing of the CNFC-3G new fuel transportation container is realized and the skill meets the market requirements; the batch production capability of the transportation container is improved, and the aims of reducing the cost, saving energy sources and reducing energy consumption are realized.
Description
Technical field
The invention belongs to container for nuclear fuel transportation manufacturing technology field, be specifically related to a kind of CNFC-3G fresh fuel cask manufacture method.
Background technology
CNFC-3G fresh fuel cask is the specialized equipment of transporting AFA-3G novel fuel assembly safely.The manufacturing of current CNFC-3G cask is all by abroad being monopolized as know-how, that the import of container finish or the introduction of vessel fabrication technology all can spend huge expense, therefore after obtaining the manufacturing license of this container, the autonomous manufacture carrying out this container has huge economic benefit, also makes the manufacture level of container for nuclear fuel transportation be improved simultaneously.
Summary of the invention
A kind of CNFC-3G fresh fuel of the present invention cask manufacture method solves the problem that CNFC-3G fresh fuel cask can not independently manufacture at home.
A kind of CNFC-3G fresh fuel cask manufacture method of the present invention, comprises the following steps:
Step 1, upper and lower casing shaping: upper and lower casing all adopts thickness to be the Q345-E special cold rolling scale steel plate manufacture of 3mm, adopts Special electric magnet to be lifted on bending and molding on numerical control 6m bender;
The manufacture processing of step 2, upper and lower casing assembly: closure flange, compression angle steel all adopt Italian West Germany to irrigate mill product shaped steel, assembly welding positioning tool assembly welding is utilized to be quadra, balanced welding mode is adopted when being fixed assembly welding on dedicated platform during assembly welding, postwelding is orthopedic, on shaking platform, carry out oscillating aging again to eliminate stress, the quadra after assembly welding utilizes special tooling on digital-control boring-milling machine, process seal groove and each hole;
The manufacture processing of step 3, bracing frame: bracing frame comprises slab, each cross member, brace summer, card rail, neutron absorber plate, pressed component and other component; Described slab adopts the whole plate of 4mm bending and molding on 6m bender; Described cross member adopts finished product square tube assembly welding, and type laggard stove in school eliminates stress, the more each end face of machine work; The surface uniform of baffle pressed component and bottom transverse component pastes thick silica gel foam, locating and machining groove in assembly welding tool base plate, and by the cross member of locating slot fixed top, middle part and bottom, on this basis successively group to slab, support beam, card rail and other accessories, load boron stainless steel neutron absorber plate and assemble fixed bearing beam and slab, after adopting special tooling evenly to fix, spot welding makes above-mentioned all components be fixedly connected with; After welding and shock frame be integrally connected and carry out Vibratory Stress de-stress process; Eliminate stress after processing and the support of 59 in each component is welded on bracing frame successively, on slab, paste cork pad afterwards, adopt special pressing plate frock to compress after pasting, keep 12 hours;
The assembling of step 4, cask entirety: before assembling, nut, bolt, packing ring class workpiece are detected, select and repair the workpiece not meeting matching requirements; Shaft-like workpiece and hold down gag detected and confirms, and removing fine, soft fur thorn with 200# granularity gauze, then cleaning up; During assembling, assemble elastic cushion block and lower house assembly and shock frame successively, then assemble fixed fuel bearing support and pressed component, strut assembly, then assemble gasket seal, then assemble upper and lower casing assembly to be integrated, join the assembling completing integral container after making pin-and-hole;
Step 5, measuring for verticality: make bracing frame in the raw after being sling by the bracing frame assembled, adopt the measurement rectangular coordinate value method in country's five detection principle, carry out measuring for verticality and adjust; Overturn by bracing frame, duplicate measurements verticality also adjusts, and upset and measurement adjust repetition five times;
Step 6, loading, unloading test: after verticality passed examination, open fender assembly, identical with novel fuel assembly physical dimension, that weight is identical two pieces simulated assembly is put on the slab of bracing frame, requires according to test program the loading, the unloading test that carry out fuel assembly;
Step 7, static load, dynamic test: after loading and unloading stand the test, safety valve stamping tooling is loaded in container, the lead for simulated fuel assembly weight is evenly placed at internal tank stainless steel protection plate upper surface, container is made to reach 1.1 times of all-up weight, load onto upper housing component, and with bolt, upper and lower casing assembly is fastened as a whole, even described lead on two placing racks of upper housing component again, container is made to reach 1.25 times of all-up weight, adopt special hanger that container is hung ground, and unsettled a period of time is to complete static load test; The 100%PT carrying out placing rack weld seam after static load test completes detects, and the described lead that two of upper shell placing racks are placed is moved away from support simultaneously, after placing rack weld seam 100%PT detection is qualified, container is lifted by crane three times to complete dynamic loading experiment; Again 100%PT detection is carried out to placing rack weld seam after dynamic loading experiment completes;
Test opened by step 8, sealing, safety valve: carry out impermeability test and safety valve unlatching test to whole container;
Step 9, touch-up paint, clean, packaging, shipping: to by coming off of testing that the vessel surface that causes paints with touch-up paint is carried out in damage, and clean to integral container after pack shipping.
Preferably, draw decile bending line by line centering described in step 1 during bending, every cutter compacting 9.38m, upper shell suppresses 156 cuttves altogether, and lower house suppresses 158 cuttves altogether.
Preferably, described in step 3 during spot welding in strict accordance with the symmetrical skip welding in defined area, to control heat input, reduce welding deformation.
Preferably, redefine welding reference field when welding 59 supports described in step 3, namely avoid cumulative errors.
Preferably, the cork pad described in step 3 carries out grinding by the method for pasting fine sandpaper in leveling ruler lower surface to cork sheet surface and obtains.
Preferably, container is hung ground 100mm by static load test described in step 7, unsettled 10 minutes; In dynamic loading experiment, each lift stroke is not less than 2.5 meters, pulling speed 15m/min.
A kind of CNFC-3G fresh fuel cask manufacture method of the present invention, achieve the autonomous manufacture of this container, technical ability is met the need of market, and improves the mass production capabilities of cask, and reach reduce costs, the object of economize energy, reduction energy consumption.
Embodiment
A kind of CNFC-3G fresh fuel of the present invention cask manufacture method, comprises the following steps:
Step 1, upper and lower casing shaping
On, lower house all adopts thickness to be the Q345-E special cold rolling scale steel plate manufacture of 3mm, the special compression mold of 6 cover is made in specially-designated factories, Special electric magnet is adopted to be lifted on bending and molding on numerical control 6m bender, decile bending line is drawn by line centering during bending, every cutter compacting 9.38m, upper shell suppresses 156 cuttves altogether, lower house suppresses 158 cuttves altogether, solved by bending molding process and roll the problem that cylindrical shell exists splicing welding joint, and compensate for and roll the large problem of cylindrical shell dimensional tolerence, the shaping rear good rigidly of housing, mechanical property is even, surface quality is attractive in appearance, compact dimensions accurate stable.
The manufacture processing of step 2, upper and lower casing assembly
Upper and lower casing assembly is formed by closure flange, compression angle steel, end cap, reinforcing angle and upper and lower casing assembly welding respectively.Closure flange, compression angle steel all adopt Italian West Germany to irrigate mill product shaped steel, assembly welding positioning tool assembly welding is utilized to be quadra, adopt balanced welding mode when being fixed assembly welding on dedicated platform during assembly welding, postwelding is orthopedic, then on shaking platform, carries out oscillating aging to eliminate stress.Quadra after assembly welding utilizes special tooling on digital-control boring-milling machine, process seal groove and each hole.
The manufacture processing of step 3, bracing frame
Bracing frame is the core component directly laying novel fuel assembly, forms primarily of multiple component assembly weldings such as slab, each cross member, brace summer, card rail, neutron absorber plate, pressed components.
Described slab adopts the whole plate of 4mm bending and molding on 6m bender.
Described cross member adopts finished product square tube assembly welding, and type laggard stove in school eliminates stress, the more each end face of machine work.
The surface uniform of baffle pressed component and bottom transverse component pastes thick silica gel foam, locating and machining groove in assembly welding tool base plate, and by the cross member of locating slot fixed top, middle part and bottom, on this basis successively group to slab, support beam, card rail and other accessories, load boron stainless steel neutron absorber plate and assemble fixed bearing beam and slab, after adopting special tooling evenly to fix, spot welding makes above-mentioned all components be fixedly connected with, in strict accordance with the symmetrical skip welding in defined area during welding, to control heat input, reduce welding deformation.After welding and shock frame be integrally connected and carry out Vibratory Stress de-stress process.
Eliminate stress after processing and the support of 59 in each component is welded on bracing frame successively, when welding, welding reference field need be redefined, both avoided cumulative errors, in turn ensure that the smooth installation of horizontal pressed component and fender, each dimensional tolerence all controls within the scope of 1mm; On slab, paste cork pad afterwards, adopt special pressing plate frock to compress after pasting, keep 12 hours, guarantee that adhesive surface is smooth, non-wrinkled, bulging phenomenon.Drawing requirement flatness controls at 0.75mm, verticality 0.25mm, and ground cork sheet surface by the method for pasting fine sandpaper in leveling ruler lower surface, final measurement plane degree is 0.10 ~ 0.25mm, verticality 0.1 ~ 0.15mm.
The assembling of step 4, cask entirety
Before assembling, nut, bolt, packing ring class workpiece are detected, select and repair the workpiece not meeting matching requirements; Shaft-like workpiece and hold down gag detected and confirms, and removing fine, soft fur thorn with 200# granularity gauze, cleaning up afterwards.
During assembling, assemble elastic cushion block and lower house assembly and shock frame successively, then assemble fixed fuel bearing support and pressed component, strut assembly, then assemble gasket seal, then assemble upper and lower casing assembly to be integrated, join the assembling completing integral container after making pin-and-hole.
Step 5, measuring for verticality
Make bracing frame in the raw after being sling by the bracing frame assembled, use electronic theodolite that bracing frame sideline is carried out to measuring for verticality and adjusted.Described measuring for verticality adopts the measurement rectangular coordinate value method in country's five detection principle.Overturn by bracing frame, duplicate measurements verticality also adjusts, and reversion and measurement adjust repetition five times.
Step 6, loading, unloading test
After verticality passed examination, open fender assembly, identical with novel fuel assembly physical dimension, that weight is identical 2 simulated assemblies are put on the slab of bracing frame, require according to test program the loading, the unloading test that carry out fuel assembly.
Step 7, static load, dynamic test
After loading and unloading stand the test, safety valve stamping tooling is loaded in container, the lead for simulated fuel assembly weight is evenly placed at internal tank stainless steel protection plate upper surface, the every block 16kg of described lead, place 24 pieces altogether, now container reaches 1.1 times of all-up weight, load onto upper shell, and with bolt by upper, lower house is fastened as a whole, evenly 34 pieces of described leads are placed again on two placing racks of upper shell, container is made to reach 1.25 times of all-up weight, adopt special hanger that container is hung ground 100mm, to complete static load test after unsettled 10 minutes, the 100%PT carrying out placing rack weld seam after static load test completes detects, 34 pieces of described leads that two of upper shell placing racks are placed are moved away from support simultaneously, after placing rack weld seam 100%PT detection is qualified, container is lifted by crane three times to complete dynamic loading experiment, each lift stroke is not less than 2.5 meters, pulling speed 15m/min.Again 100%PT detection is carried out to placing rack weld seam after dynamic loading experiment completes.
Test opened by step 8, sealing, safety valve
Carry out impermeability test and safety valve unlatching test to whole container, test method opened by described sealing test method and safety valve is general knowledge known in this field.
Step 9, touch-up paint, clean, packaging, shipping
To by coming off of testing that the vessel surface that causes paints with touch-up paint is carried out in damage, and clean to integral container after pack shipping.
Claims (6)
1. a CNFC-3G fresh fuel cask manufacture method, is characterized in that: comprise the following steps:
Step 1, upper and lower casing shaping: upper and lower casing all adopts thickness to be the Q345-E special cold rolling scale steel plate manufacture of 3mm, adopts Special electric magnet to be lifted on bending and molding on numerical control 6m bender;
The manufacture processing of step 2, upper and lower casing assembly: closure flange, compression angle steel all adopt Italian West Germany to irrigate mill product shaped steel, assembly welding positioning tool assembly welding is utilized to be quadra, balanced welding mode is adopted when being fixed assembly welding on dedicated platform during assembly welding, postwelding is orthopedic, on shaking platform, carry out oscillating aging again to eliminate stress, the quadra after assembly welding utilizes special tooling on digital-control boring-milling machine, process seal groove and each hole;
The manufacture processing of step 3, bracing frame: bracing frame comprises slab, each cross member, brace summer, card rail, neutron absorber plate, pressed component and other component; Described slab adopts the whole plate of 4mm bending and molding on 6m bender; Described cross member adopts finished product square tube assembly welding, and type laggard stove in school eliminates stress, the more each end face of machine work; The surface uniform of baffle pressed component and bottom transverse component pastes thick silica gel foam, locating and machining groove in assembly welding tool base plate, and by the cross member of locating slot fixed top, middle part and bottom, on this basis successively group to slab, support beam, card rail and other accessories, load boron stainless steel neutron absorber plate and assemble fixed bearing beam and slab, after adopting special tooling evenly to fix, spot welding makes above-mentioned all components be fixedly connected with; After welding and shock frame be integrally connected and carry out Vibratory Stress de-stress process; Eliminate stress after processing and the support of 59 in each component is welded on bracing frame successively, on slab, paste cork pad afterwards, adopt special pressing plate frock to compress after pasting, keep 12 hours;
The assembling of step 4, cask entirety: before assembling, nut, bolt, packing ring class workpiece are detected, select and repair the workpiece not meeting matching requirements; Shaft-like workpiece and hold down gag detected and confirms, and removing fine, soft fur thorn with 200# granularity gauze, then cleaning up; During assembling, assemble elastic cushion block and lower house assembly and shock frame successively, then assemble fixed fuel bearing support and pressed component, strut assembly, then assemble gasket seal, then assemble upper and lower casing assembly to be integrated, join the assembling completing integral container after making pin-and-hole;
Step 5, measuring for verticality: make bracing frame in the raw after being sling by the bracing frame assembled, adopt the measurement rectangular coordinate value method in country's five detection principle, carry out measuring for verticality and adjust; Overturn by bracing frame, duplicate measurements verticality also adjusts, and upset and measurement adjust repetition five times;
Step 6, loading, unloading test: after verticality passed examination, open fender assembly, identical with novel fuel assembly physical dimension, that weight is identical two pieces simulated assembly is put on the slab of bracing frame, requires according to test program the loading, the unloading test that carry out fuel assembly;
Step 7, static load, dynamic test: after loading and unloading stand the test, safety valve stamping tooling is loaded in container, the lead for simulated fuel assembly weight is evenly placed at internal tank stainless steel protection plate upper surface, container is made to reach 1.1 times of all-up weight, load onto upper housing component, and with bolt, upper and lower casing assembly is fastened as a whole, even described lead on two placing racks of upper housing component again, container is made to reach 1.25 times of all-up weight, adopt special hanger that container is hung ground, and unsettled a period of time is to complete static load test; The 100%PT carrying out placing rack weld seam after static load test completes detects, and the described lead that two of upper shell placing racks are placed is moved away from support simultaneously, after placing rack weld seam 100%PT detection is qualified, container is lifted by crane three times to complete dynamic loading experiment; Again 100%PT detection is carried out to placing rack weld seam after dynamic loading experiment completes;
Test opened by step 8, sealing, safety valve: carry out impermeability test and safety valve unlatching test to whole container;
Step 9, touch-up paint, clean, packaging, shipping: to by coming off of testing that the vessel surface that causes paints with touch-up paint is carried out in damage, and clean to integral container after pack shipping.
2. CNFC-3G fresh fuel cask manufacture method as claimed in claim 1, is characterized in that: draw decile bending line described in step 1 during bending by line centering, and every cutter compacting 9.38m, upper shell suppresses 156 cuttves altogether, and lower house suppresses 158 cuttves altogether.
3. CNFC-3G fresh fuel cask manufacture method as claimed in claim 1, is characterized in that: described in step 3 during spot welding in strict accordance with the symmetrical skip welding in defined area, to control heat input, reduce welding deformation.
4. CNFC-3G fresh fuel cask manufacture method as claimed in claim 1, is characterized in that: redefine welding reference field when welding 59 supports described in step 3, namely avoid cumulative errors.
5. CNFC-3G fresh fuel cask manufacture method as claimed in claim 1, is characterized in that: the cork pad described in step 3 carries out grinding by the method for pasting fine sandpaper in leveling ruler lower surface to cork sheet surface and obtains.
6. CNFC-3G fresh fuel cask manufacture method as claimed in claim 1, is characterized in that: container is hung ground 100mm by static load test described in step 7, unsettled 10 minutes; Dynamic loading is tested each lift stroke and is not less than 2.5 meters, pulling speed 15m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745603.XA CN104751925B (en) | 2013-12-29 | 2013-12-29 | A kind of CNFC 3G fresh fuels shipping container manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310745603.XA CN104751925B (en) | 2013-12-29 | 2013-12-29 | A kind of CNFC 3G fresh fuels shipping container manufacture method |
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| CN104751925A true CN104751925A (en) | 2015-07-01 |
| CN104751925B CN104751925B (en) | 2017-09-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454620A (en) * | 1991-01-18 | 1995-10-03 | Ultra Lite Manufacturing, Inc. | Stressed-skin cargo carrier |
| CN1208495A (en) * | 1996-02-06 | 1999-02-17 | 英国核子燃料公司 | Sealed basket for pressurised water reactor fuel assemblies |
| CN1300079A (en) * | 1999-12-15 | 2001-06-20 | Gnb核能容器有限公司 | Method for making transport and/or storage container for radial objects |
| WO2010023214A1 (en) * | 2008-08-27 | 2010-03-04 | Tn International | Method for making a packaging for transporting and / or storing nuclear material using the weld shrinkage phenomenon |
| CN103157884A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Fuel assembly transportation container manufacturing welding process |
| CN103474119A (en) * | 2013-09-12 | 2013-12-25 | 中国核电工程有限公司 | Conveying container for nuclear fuel assemblies |
-
2013
- 2013-12-29 CN CN201310745603.XA patent/CN104751925B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454620A (en) * | 1991-01-18 | 1995-10-03 | Ultra Lite Manufacturing, Inc. | Stressed-skin cargo carrier |
| CN1208495A (en) * | 1996-02-06 | 1999-02-17 | 英国核子燃料公司 | Sealed basket for pressurised water reactor fuel assemblies |
| CN1300079A (en) * | 1999-12-15 | 2001-06-20 | Gnb核能容器有限公司 | Method for making transport and/or storage container for radial objects |
| WO2010023214A1 (en) * | 2008-08-27 | 2010-03-04 | Tn International | Method for making a packaging for transporting and / or storing nuclear material using the weld shrinkage phenomenon |
| CN103157884A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Fuel assembly transportation container manufacturing welding process |
| CN103474119A (en) * | 2013-09-12 | 2013-12-25 | 中国核电工程有限公司 | Conveying container for nuclear fuel assemblies |
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| CN104751925B (en) | 2017-09-29 |
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