CN105609147A - System for helium charging and plug pressing of fuel rods of fast reactor - Google Patents
System for helium charging and plug pressing of fuel rods of fast reactor Download PDFInfo
- Publication number
- CN105609147A CN105609147A CN201511000583.9A CN201511000583A CN105609147A CN 105609147 A CN105609147 A CN 105609147A CN 201511000583 A CN201511000583 A CN 201511000583A CN 105609147 A CN105609147 A CN 105609147A
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- China
- Prior art keywords
- obturator
- tamponade
- cladding tubes
- cylinder
- helium
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- 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.)
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/02—Manufacture of fuel elements or breeder elements contained in non-active casings
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Basic Packing Technique (AREA)
Abstract
The invention belongs to the technical field of reactor engineering and discloses a system for helium charging and plug pressing of fuel rods of a fast reactor. The system comprises a machine frame, a plug pressing device, a sealing device and a clamping device, wherein the plug pressing device, the sealing device and the clamping device are located at one side of the machine frame; the system is vertically placed in a glove box, the plug pressing device is located above the sealing device, and the sealing device is located above the clamping device; the system adopts an air cylinder as a power source, and the helium charging and plug pressing of clad tubes are completed in a manual assistance manner. The system has the advantages of high clad tube vacuum degree, high helium gas utilization ratio and high upper-end-plug pressed-in efficiency.
Description
Technical field
The invention belongs to reactor engineering technical field, be specifically related to a kind ofly fill helium tamponade for fast reactor fuel rodSystem.
Background technology
In the production process of fast reactor fuel rod, need in the tube chamber of cladding tubes, pack pellet into and fill after vacuumizingEnter the helium of certain pressure, also need upper end plug to be pressed into cladding tubes tube chamber after being filled with helium. Due to cladding tubes pipeFootpath is little only has 6～7mm, therefore fills helium difficulty axiality and sealing requirements large and to tamponade all very high. ExistingThe cladding tubes that upper end plug is pressed into having is to complete in glove box, and because glove box space is larger, vacuum is difficult toEnsure, efficiency is lower, directly affected tamponade quality. Therefore, need high, the helium of a kind of cladding tubes vacuumHigh and the upper end plug of utilization rate be pressed into efficiency high fill helium tamponade device.
Summary of the invention
(1) goal of the invention
According to the existing problem of prior art, the invention provides that a kind of cladding tubes vacuum is high, helium utilizationHigh and the upper end plug of rate is pressed into fast reactor fuel rod that efficiency is high fills the system of helium tamponade.
(2) technical scheme
Fill a system for helium tamponade for fast reactor fuel rod, this system comprises frame and is positioned at the pressure of frame one sidePlug device, obturator and clamping device; This system is vertically placed in glove box, and tamponade device is positioned at airtightDevice top, obturator is positioned at clamping device top; This system adopts cylinder action power source, human assistanceComplete cladding tubes and fill helium tamponade;
In described frame, the axis of guide is installed, this axis of guide is convenient to tamponade device and obturator water on the axis of guideLevel and smooth moving;
Described clamping device presss from both sides cladding tubes for packing pellet into and be pressed into upper end plug process at cladding tubesTightly, it comprises clamping cylinder, pressing plate, clamp and limiting plate, and pressing plate is under the drive of clamping cylinder and springCan move up and down cladding tubes is clamped or unclamp; Wherein clamp and clamping cylinder lay respectively at pressing plateTwo ends, and the material of clamp is the nonmetallic materials that elasticity is less; Clamp is divided into upper clamping block and lower clampingPiece, and the corresponding surface of upper clamping block and lower clamp is provided with the arc groove adapting with cladding tubes, prevent byCladding tubes compressive strain; Limiting plate is for cladding tubes axial location;
Described obturator comprises lower enclosed cylinder, obturator, and wherein the center of obturator is left and cladding tubes pipeThe cladding tubes passage that footpath adapts, and the two ends up and down of obturator are all provided with sealing ring; Lower enclosed cylinder upwardsThe mobile sealing ring that is depressed into obturator lower end seals its crimp by obturator below, also pacify obturator insideEqually distributed 3 steel balls are vertically housed, spring are all installed after each steel ball, steel ball is by this springBe connected with obturator and steel ball is radially moved; Carry out, before upper end plug tamponade operation, upper end plug is positioned over to 3Gap place between individual steel ball;
Described tamponade device comprises enclosed cylinder, tamponade cylinder, push rod, depression bar, seal; Push rod is positioned atUpper enclosed cylinder below, thus upper enclosed cylinder drives push rod to move down the sealing ring crimp of obturator upper endBy whole obturator sealing; Between seal and push rod, be connected with lower platen by top board, seal is elasticityMaterial can move up and down and not affect sealing property with push rod; Depression bar is by a horizontal depression bar and vertical depression bar groupThe integrated depression bar becoming, entirety is " T " character form structure, it is positioned at tamponade cylinder below, at tamponade cylinderDrive down mobile, wherein vertical depression bar is through seal and can come downwards to obturator under the drive of tamponade cylinderIn cladding tubes passage, cladding tubes is carried out to tamponade operation;
Preferably, be also provided with KF joint on obturator, obturator is connected with vavuum pump by this joint.
Preferably, the material of described frame is stainless steel.
Preferably, the material of upper clamping block and lower clamp is bakelite.
Preferably, in described frame, a side of the axis of guide is provided with tamponade device and spacing spacing of obturatorDevice.
While utilizing this to fill helium tamponade device cladding tubes is carried out pellet filling and fills helium tamponade, the step that it is takedBe:
(1) tamponade device and obturator are moved as pellet and load slot milling along the axis of guide, then willThe upper end of cladding tubes is inserted in the arc groove between clamping device upper clamping block and lower clamp, clamping cylinder actionBand dynamic pressure plate clamps cladding tubes;
(2) in cladding tubes, pack pellet into;
(3) obturator is moved to right limit device along the axis of guide, on cladding tubes passage and clamping deviceCladding tubes alignment, upper end plug is put into the gap place between obturator steel ball;
(4) tamponade device is moved to right limit device along the axis of guide, depression bar with obturator in bagThe alignment of package passage, clamping cylinder action moves down depression bar, and cladding tubes is unclamped;
(5) by moving to obturator steel ball place on cladding tubes, after steel ball, move, cladding tubes upper end reaches tamponade position;
(6) lower enclosed cylinder move up be depressed into obturator lower end sealing ring by its crimp by obturatorBelow sealing, upper enclosed cylinder drives push rod to move down the sealing ring crimp of obturator upper end whole airtightBody sealing;
(7) by KF joint, obturator is vacuumized, fill helium; Evacuated pressure is less than 10Pa, fills heliumThe pressure of gas is 1.1atm～1.3atm;
(8) action of tamponade cylinder drives depression bar to be moved downward in obturator, and upper end plug is pressed in cladding tubes.
(3) beneficial effect
Helium tamponade system that what this device provided fill can realize to be carried out pellet filling, is filled with helium and presses fuel rodEnter upper end plug, have that vacuum more easily ensures, tamponade efficiency and a high beneficial effect of tamponade quality. Specific explanationsFor:
(1) traditional helium tamponade operation of filling is directly carried out in glove box, because glove box space is larger,Vacuum is difficult to ensure and to fill helium efficiency low. It is to establish in obturator with the process that is pressed into upper end plug that the application fills helium(this channel diameter and cladding tubes external diameter are suitable) completing in the cladding tubes passage of putting, vacuum easily ensures,Vacuumize required time and shorten dramatically, and fill helium efficiency and greatly improve.
(2) the cladding tubes passage and the cladding tubes external diameter that in obturator, arrange are suitable, are not only beneficial to raising vacuumSpend and fill helium efficiency, more important point is to be easy to tamponade positioning action. Because cladding tubes stretches to obturatorIn passage, upper end plug is positioned over the steel ball top arranging in obturator, when tamponade, on cladding tubes, moves to and reachesEnd plug place, is convenient to tamponade device it is carried out to accurately location tamponade.
Brief description of the drawings
Fig. 1 is that fuel rod fills helium tamponade system schematic; Wherein 1 frame; The 2nd, tamponade device; The 3rd, airtightDevice; The 4th, clamping device;
Fig. 2 is clamping device schematic diagram; Wherein 5 is clamping cylinders; The 6th, spring; The 7th, pressing plate; The 8th, folderTight piece;
Fig. 3 is obturator schematic diagram; Wherein 9 is bearings; The 10th, upper sealing ring; The 11st, steel ball; The 12nd,Obturator; The 13rd, lower seal;
Fig. 4 is tamponade device schematic diagram; Wherein 14 is tamponade cylinders; The 15th, upper enclosed cylinder; The 16th, push awayBar; The 17th, top board; The 18th, depression bar; The 19th, seal, the 20th, lower platen.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is further elaborated.
Fill a system for helium tamponade for fast reactor fuel rod, this system comprises frame 1 and is positioned at frame one sideTamponade device 2, obturator 3 and clamping device 4; This system is vertically placed in glove box, tamponade device2 are positioned at obturator 3 tops, and obturator 3 is positioned at clamping device 4 tops; This system adopts cylinder actionPower source, human assistance completes cladding tubes and fills helium tamponade;
The material of described frame 1 is stainless steel, in frame 1, the axis of guide is installed, and this axis of guide is convenient to tamponade dressPut 2 with obturator 3 horizontal slip on the axis of guide. In described frame 1, be provided with tamponade device and airtightInstall spacing stopping means.
Described clamping device 4 carries out cladding tubes for packing pellet at cladding tubes into and being pressed into upper end plug processClamp, it comprises clamping cylinder 5, pressing plate 7, clamp 8 and limiting plate, pressing plate 7 at clamping cylinder 5 andUnder the drive of spring 6, can move up and down cladding tubes is clamped or unclamp; Wherein clamp 8 and clamping gasCylinder 5 lays respectively at the two ends of pressing plate 7, and the material of clamp 8 is the nonmetallic materials that elasticity is less; ClampPiece 8 is divided into upper clamping block and lower clamp, and the corresponding surface of upper clamping block and lower clamp is provided with and involucrumThe arc groove that pipe adapts, prevents cladding tubes compressive strain; Limiting plate is for cladding tubes axial location; Upper clampingThe material of piece and lower clamp is bakelite.
Described obturator 3 comprises lower enclosed cylinder, obturator 12, wherein obturator 12 leave at center withThe cladding tubes passage that cladding tubes caliber adapts, and the two ends up and down of obturator are all provided with sealing ring; Lower airtightCylinder move up be depressed into obturator 12 lower ends lower seal 13 by its crimp by close obturator belowEnvelope, obturator 12 inside are also provided with equally distributed 3 steel balls 11 vertically, equal peace after each steel ballSpring is housed, and steel ball is connected with obturator 12 by this spring and steel ball 11 is radially moved; Carry out onBefore end plug tamponade operation, upper end plug is positioned over to 3 gap places between steel ball; On obturator 3, be also provided withKF joint, obturator is connected with vavuum pump by this joint.
Described tamponade device comprises enclosed cylinder 15, tamponade cylinder 14, push rod 16, depression bar 18, seal19; Push rod 16 is positioned at enclosed cylinder 15 belows, and upper enclosed cylinder 15 drives push rod 16 to move down obturatorThereby upper sealing ring 10 crimps of upper end seal whole obturator 12; Seal 19 and push rod 16Between be connected with lower platen by top board, seal 19 can move up and down and not with push rod 16 for elastic materialAffect sealing property; Depression bar 18 is the integrated depression bar being made up of a horizontal depression bar and vertical depression bar, wholeBody is " T " character form structure, and it is positioned at tamponade cylinder 14 belows, under driving, moves in tamponade cylinder 14, itsIn vertical depression bar through seal 19 and can come downwards to the involucrum of obturator 12 under the drive of tamponade cylinder 14In tube passage, cladding tubes is carried out to tamponade operation;
While utilizing this to fill helium tamponade device cladding tubes is carried out pellet filling and fills helium tamponade, the step that it is takedBe:
(1) tamponade device and obturator are moved as pellet and load slot milling along the axis of guide, then willThe upper end of cladding tubes is inserted in the arc groove between clamping device upper clamping block and lower clamp, clamping cylinder actionBand dynamic pressure plate clamps cladding tubes;
(2) in cladding tubes, pack pellet into;
(3) obturator is moved to right limit device along the axis of guide, on cladding tubes passage and clamping deviceCladding tubes alignment, upper end plug is put into the gap place between obturator steel ball;
(4) tamponade device is moved to right limit device along the axis of guide, depression bar with obturator in bagThe alignment of package passage, clamping cylinder action moves down depression bar, and cladding tubes is unclamped;
(5) by moving to obturator steel ball place on cladding tubes, after steel ball, move, cladding tubes upper end reaches tamponade position;
(6) lower enclosed cylinder move up be depressed into obturator lower end sealing ring by its crimp by obturatorBelow sealing, upper enclosed cylinder drives push rod to move down the sealing ring crimp of obturator upper end whole airtightBody sealing;
(7) by KF joint, obturator is vacuumized, fill helium; Evacuated pressure is less than 10Pa, fills heliumThe pressure of gas is 1.1atm～1.3atm;
(8) action of tamponade cylinder drives depression bar to be moved downward in obturator, and upper end plug is pressed in cladding tubes.
Claims (5)
1. a system of filling helium tamponade for fast reactor fuel rod, is characterized in that, this system comprises frame and positionIn tamponade device, obturator and the clamping device of frame one side; This system is vertically placed in glove box, pressesPlug device is positioned at obturator top, and obturator is positioned at clamping device top; This system adopts cylinder action movingPower source, human assistance completes cladding tubes and fills helium tamponade;
In described frame, the axis of guide is installed, this axis of guide is convenient to tamponade device and obturator water on the axis of guideLevel and smooth moving;
Described clamping device presss from both sides cladding tubes for packing pellet into and be pressed into upper end plug process at cladding tubesTightly, it comprises clamping cylinder, pressing plate, clamp and limiting plate, and pressing plate is under the drive of clamping cylinder and springCan move up and down cladding tubes is clamped or unclamp; Wherein clamp and clamping cylinder lay respectively at pressing plateTwo ends, and the material of clamp is the nonmetallic materials that elasticity is less; Clamp is divided into upper clamping block and lower clampingPiece, and the corresponding surface of upper clamping block and lower clamp is provided with the arc groove adapting with cladding tubes, prevent byCladding tubes compressive strain; Limiting plate is for cladding tubes axial location;
Described obturator comprises lower enclosed cylinder, obturator, and wherein the center of obturator is left and cladding tubes pipeThe cladding tubes passage that footpath adapts, and the two ends up and down of obturator are all provided with sealing ring; Lower enclosed cylinder upwardsThe mobile sealing ring that is depressed into obturator lower end seals its crimp by obturator below, also pacify obturator insideEqually distributed 3 steel balls are vertically housed, spring are all installed after each steel ball, steel ball is by this springBe connected with obturator and steel ball is radially moved;
Described tamponade device comprises enclosed cylinder, tamponade cylinder, push rod, depression bar, seal; Push rod is positioned atUpper enclosed cylinder below, thus upper enclosed cylinder drives push rod to move down the sealing ring crimp of obturator upper endBy whole obturator sealing; Between seal and push rod, be connected with lower platen by top board, seal is elasticityMaterial can move up and down and not affect sealing property with push rod; Depression bar is by a horizontal depression bar and vertical depression bar groupThe integrated depression bar becoming, entirety is " T " character form structure, it is positioned at tamponade cylinder below, at tamponade cylinderDrive down mobile, wherein vertical depression bar is through seal and can come downwards to obturator under the drive of tamponade cylinderIn cladding tubes passage, cladding tubes is carried out to tamponade operation.
2. a kind of system of filling helium tamponade for fast reactor fuel rod according to claim 1, is characterized in that,On obturator, be also provided with KF joint, obturator is connected with vavuum pump by this joint.
3. a kind of system of filling helium tamponade for fast reactor fuel rod according to claim 1, is characterized in that,The material of described frame is stainless steel.
4. a kind of system of filling helium tamponade for fast reactor fuel rod according to claim 1, is characterized in that,The material of upper clamping block and lower clamp is bakelite.
5. a kind of system of filling helium tamponade for fast reactor fuel rod according to claim 1, is characterized in that,In described frame, a side of the axis of guide is provided with tamponade device and the spacing stopping means of obturator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000583.9A CN105609147B (en) | 2015-12-28 | 2015-12-28 | A kind of system that helium tamponade is filled for fast reactor fuel rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000583.9A CN105609147B (en) | 2015-12-28 | 2015-12-28 | A kind of system that helium tamponade is filled for fast reactor fuel rod |
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| CN105609147A true CN105609147A (en) | 2016-05-25 |
| CN105609147B CN105609147B (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511000583.9A Active CN105609147B (en) | 2015-12-28 | 2015-12-28 | A kind of system that helium tamponade is filled for fast reactor fuel rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531260A (en) * | 2016-11-25 | 2017-03-22 | 中核建中核燃料元件有限公司 | Fuel-rod end plug pressing machine and application method |
| CN108305698A (en) * | 2017-12-29 | 2018-07-20 | 中核北方核燃料元件有限公司 | A kind of automatic pressure side plug device of fuel rod |
| CN109585049A (en) * | 2018-12-29 | 2019-04-05 | 中核北方核燃料元件有限公司 | A kind of cladding tubes, which vacuumize, fills helium tamponade device |
| CN109741846A (en) * | 2018-12-29 | 2019-05-10 | 中核北方核燃料元件有限公司 | A kind of presurized water reactor annular fuel component separator tube tamponade device and method |
| CN113744908A (en) * | 2021-07-09 | 2021-12-03 | 中国核电工程有限公司 | Device, system and method for filling helium into fuel rod pressure plug |
Citations (8)
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| JPS63196895A (en) * | 1987-02-12 | 1988-08-15 | 株式会社日立製作所 | End plug welder for nuclear-reactor fuel rod |
| JPH01245977A (en) * | 1988-03-26 | 1989-10-02 | Shimadzu Corp | Device for supplying parts using to end plug welding apparatus for atomic fuel rod |
| US5375756A (en) * | 1993-03-31 | 1994-12-27 | General Electric Company | Apparatus for assembling and welding final end plugs to nuclear fuel-containing cladding tubes and inspecting the welds, all on an automated basis |
| JPH09220669A (en) * | 1996-02-13 | 1997-08-26 | Mitsubishi Nuclear Fuel Co Ltd | Resistance welding device for end plug of nuclear fuel rod |
| RU2229177C2 (en) * | 2002-05-08 | 2004-05-20 | Открытое акционерное общество "Новосибирский завод химконцентратов" | Method and process line for removing cladding from fuel element |
| CN102789820A (en) * | 2012-08-17 | 2012-11-21 | 中科华核电技术研究院有限公司 | Nuclear fuel rod |
| CN103157892A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Fuel element rod plug-pressing-welding integration method |
| US20140254740A1 (en) * | 2012-12-28 | 2014-09-11 | Global Nuclear Fuel - Americas, Llc | Fuel rods with wear-inhibiting coatings and methods of making the same |
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2015
- 2015-12-28 CN CN201511000583.9A patent/CN105609147B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63196895A (en) * | 1987-02-12 | 1988-08-15 | 株式会社日立製作所 | End plug welder for nuclear-reactor fuel rod |
| JPH01245977A (en) * | 1988-03-26 | 1989-10-02 | Shimadzu Corp | Device for supplying parts using to end plug welding apparatus for atomic fuel rod |
| US5375756A (en) * | 1993-03-31 | 1994-12-27 | General Electric Company | Apparatus for assembling and welding final end plugs to nuclear fuel-containing cladding tubes and inspecting the welds, all on an automated basis |
| JPH09220669A (en) * | 1996-02-13 | 1997-08-26 | Mitsubishi Nuclear Fuel Co Ltd | Resistance welding device for end plug of nuclear fuel rod |
| RU2229177C2 (en) * | 2002-05-08 | 2004-05-20 | Открытое акционерное общество "Новосибирский завод химконцентратов" | Method and process line for removing cladding from fuel element |
| CN103157892A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Fuel element rod plug-pressing-welding integration method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531260A (en) * | 2016-11-25 | 2017-03-22 | 中核建中核燃料元件有限公司 | Fuel-rod end plug pressing machine and application method |
| CN108305698A (en) * | 2017-12-29 | 2018-07-20 | 中核北方核燃料元件有限公司 | A kind of automatic pressure side plug device of fuel rod |
| CN109585049A (en) * | 2018-12-29 | 2019-04-05 | 中核北方核燃料元件有限公司 | A kind of cladding tubes, which vacuumize, fills helium tamponade device |
| CN109741846A (en) * | 2018-12-29 | 2019-05-10 | 中核北方核燃料元件有限公司 | A kind of presurized water reactor annular fuel component separator tube tamponade device and method |
| CN113744908A (en) * | 2021-07-09 | 2021-12-03 | 中国核电工程有限公司 | Device, system and method for filling helium into fuel rod pressure plug |
| CN113744908B (en) * | 2021-07-09 | 2024-05-17 | 中国核电工程有限公司 | Helium filling device, system and method for fuel rod plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105609147B (en) | 2017-09-12 |
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