CN108257696B - Device for compressing, assembling and measuring upper tube seat of fuel assembly - Google Patents
Device for compressing, assembling and measuring upper tube seat of fuel assembly Download PDFInfo
- Publication number
- CN108257696B CN108257696B CN201611241449.2A CN201611241449A CN108257696B CN 108257696 B CN108257696 B CN 108257696B CN 201611241449 A CN201611241449 A CN 201611241449A CN 108257696 B CN108257696 B CN 108257696B
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- China
- Prior art keywords
- tube seat
- upper tube
- positioning
- claw
- baffle
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- 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)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to the technical field of fuel assembly manufacturing, in particular to a device for compressing, assembling and measuring an upper tube seat of a fuel assembly. When the upper tube seat is compressed, the supporting auxiliary structure is firstly arranged from the upper end of the upper tube seat, so that the baffle disc props against the guide tube clamping tube in the upper tube seat, and the lifting lug on the side edge of the upper tube seat is positioned and clamped; then, the pull claw hooks the process hole of the wing plate of the upper tube seat, the positioning ball is placed in the positioning hole machined in the center of the positioning disc, the screw is rotated, the compression of the upper tube seat is achieved, then the upper tube seat is arranged on the V-shaped support, the upper tube seat is close to the tube opening of the guide tube of the rod bundle assembly, then the upper tube seat is pushed into the guide tube, the assembly is completed, and then the measuring baffle is slid to be tightly attached to the upper end face of the upper tube seat, and the length measurement in the direction of the upper tube seat is completed. The invention simplifies the operation process, improves the reliability and reduces the safety risk during the measurement of the length of the assembly.
Description
Technical Field
The invention relates to the technical field of fuel assembly manufacturing, in particular to a device for compressing, assembling and measuring an upper tube seat of a fuel assembly.
Background
When the fuel assembly is assembled, the spring of the upper tube seat is compressed, then the upper tube seat is horizontally arranged on the bracket, the bracket is slid, the bracket and other parts are assembled into the fuel assembly, after the assembly is completed, the length reading of the upper tube seat is measured, and the length of the fuel assembly is obtained by a comparison measurement method.
The existing compression device and measuring device are easy to cause the phenomenon of extrusion deflection of the upper tube seat built-in spring during compression, and easily cause the phenomenon of scratch of the inner and outer tube bodies due to different axes of the inner and outer tube bodies during horizontal compression; and the whole platform of current measurement mode is in the slope certain angle and carries out upper tube base direction length measurement, because upper tube base weight is heavier during the measurement, and is in the incline direction, upper tube base takes place to collapse first phenomenon easily, causes measurement error increase, and the subassembly is in the incline state during the measurement, has great potential safety hazard.
Disclosure of Invention
In view of the above prior art, the present invention provides a device for compressing, assembling and measuring an upper tube seat of a fuel assembly, which is used for solving the problems of compressing and assembling during assembling the upper tube seat of the fuel assembly.
In order to solve the technical problems, the invention provides a device for compressing, assembling and measuring an upper tube seat of a fuel assembly, which comprises a supporting auxiliary structure and a compressing tool structure;
the supporting auxiliary structure comprises a positioning disc, an adjusting screw, a baffle disc, a process hole, a positioning hole and a positioning clamp;
the positioning disc and the baffle disc are of disc structures and are connected through an adjusting screw;
3 threaded holes which are arranged in a triangular manner are processed on the positioning disc, and the threaded holes are matched with the adjusting screw;
a positioning hole is formed in the center of the positioning disc, and the positioning hole is a blind hole;
the side edge of the positioning disc is provided with a positioning card, and the positioning card is provided with a bulge in the direction pointing to the baffle disc;
processing a plurality of process holes in the rest space of the positioning disk, wherein the process holes are through holes;
the compression tool structure comprises a screw, a claw handle, a positioning ball, a fixed pulling claw, a movable pulling claw and a fixed screw;
the claw handle is of a rod-shaped structure, a threaded through hole is machined in the center of the claw handle, and the threaded through hole is matched with the screw rod;
the lower end of the claw handle is connected with one end of a fixed pulling claw, the fixed pulling claw is vertically connected with the claw handle, the fixed pulling claw is of a rod-shaped structure, and the other end of the fixed pulling claw is provided with 2 fixed screws;
the upper end of the jaw handle is connected with one end of a movable pulling jaw, the movable pulling jaw is movably connected with the jaw handle, the movable pulling jaw is in a rod-shaped structure, and the other end of the movable pulling jaw is provided with 2 fixing screws;
the fixed pulling claw and the movable pulling claw are arranged on the same side of the claw handle;
one end of the screw rod and one end of the fixed pulling claw are provided with positioning balls.
When the upper tube seat is compressed, the supporting auxiliary structure is firstly installed from the upper end of the upper tube seat, and the length of the adjusting screw rod is adjusted, so that the baffle disc props against the guide tube clamping tube in the upper tube seat, and the lifting lug on the side edge of the upper tube seat is clamped in a positioning way;
then 2 fixing screws arranged at the free ends of the fixing pull claws are hooked on the process holes on one side of the wing plate of the upper tube seat, 2 fixing screws arranged at the free ends of the movable pull claws are hooked on the process holes on the other side of the wing plate of the upper tube seat, and then the positioning balls are placed in the positioning holes machined in the center of the positioning disc, and the screws are rotated to compress the upper tube seat.
Further, the device also comprises a V-shaped bracket, a tube seat supporting table, a platform and a supporting table guide rail;
the platform sets up on the lathe platform, and parallel arrangement 2 brace table guide rails on the platform, and the tube socket brace table slides along the brace table guide rail, sets up V type support on the tube socket brace table, and V type support is used for supporting the upper tube socket.
Further, the compressed upper tube seat, the supporting auxiliary structure and the compression tool structure are arranged on the V-shaped bracket, the compressed upper tube seat is moved in a sliding mode through the guide rail of the supporting table to enable the compressed upper tube seat to be close to the pipe orifice of the guide pipe of the rod bundle assembly, and then the upper tube seat is pushed into the guide pipe to finish assembly.
Further, the device also comprises a measuring baffle, a secondary ruler, a main ruler and a measuring baffle guide rail;
the platform is also provided with a measuring baffle guide rail, the measuring baffle guide rail and the supporting table guide rail are on the same horizontal plane, the measuring baffle slides along the measuring baffle guide rail, and the measuring baffle can be tightly attached to the upper end face of the upper tube seat;
the measuring baffle is provided with a main ruler, and the main ruler is provided with an auxiliary ruler.
Further, after the upper tube seat is assembled, the supporting auxiliary structure and the compression tool structure are removed, the measuring baffle is slid to be tightly attached to the upper end face of the upper tube seat, and then the length measurement in the direction of the upper tube seat is completed through the matching of the main ruler and the auxiliary ruler.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
according to the device for compressing, assembling and measuring the upper tube seat of the fuel assembly, when the measuring device measures the length of the upper tube seat in the direction, the assembly is in a horizontal state, the platform does not need to incline any more, the operation safety risk is reduced, and when the length of the assembly is measured, the V-shaped support can effectively support the upper tube seat, so that the phenomenon that the measuring baffle plate cannot be tightly matched with the end face due to head collapse of the upper tube seat when the assembly inclines is avoided, and the measuring error is increased.
The device for compressing, assembling and measuring the upper tube seat of the fuel assembly simplifies the operation process, improves the reliability and reduces the safety risk during the measurement of the length of the assembly.
Drawings
FIG. 1 is a schematic illustration of an apparatus for compression assembly and measurement of a fuel assembly top nozzle according to the present invention;
FIG. 2 is a schematic compression diagram of a fuel assembly top header;
FIG. 3 is a schematic view of a support assist structure according to the present invention;
FIG. 4 is a schematic diagram of a compression tooling structure according to the present invention;
FIG. 5 is a schematic diagram of a measurement structure according to the present invention;
in the figure: the device comprises a 1-machine tool table, a 2-V-shaped support, a 3-upper tube seat, a 4-tube seat supporting table, a 5-platform, a 6-supporting table guide rail, a 7-supporting auxiliary structure, an 8-compression tool structure, a 9-measuring baffle, a 10-auxiliary ruler, an 11-main ruler, a 12-measuring baffle guide rail, a 701-positioning disc, a 702-adjusting screw, a 703-baffle disc, a 704-process hole, a 705-positioning hole, a 706-positioning card, a 801-screw, a 802-claw handle, a 803-positioning ball, a 804-fixed pull claw, a 805-movable pull claw and a 806-fixed screw.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 to 5, the device for compressing, assembling and measuring the upper tube seat of the fuel assembly comprises a supporting auxiliary structure 7 and a compressing tool structure 8;
the supporting auxiliary structure 7 comprises a positioning disc 701, an adjusting screw 702, a baffle disc 703, a process hole 704, a positioning hole 705 and a positioning card 706;
the positioning plate 701 and the baffle plate 703 are of a disc structure, and the positioning plate 701 and the baffle plate 703 are connected through an adjusting screw 702;
3 threaded holes which are arranged in a triangular manner are processed on the positioning disk 701, and the threaded holes are matched with the adjusting screw 702;
a positioning hole 705 is formed in the center of the positioning disc 701, and the positioning hole 705 is a blind hole;
a positioning card 706 is arranged on the side edge of the positioning disk 701, and a bulge is arranged on the positioning card 706 pointing to the direction of the baffle disk 703;
processing a plurality of process holes 704 in the rest space of the positioning disk 701, wherein the process holes 704 are through holes;
the compression tooling structure 8 comprises a screw 801, a claw handle 802, a positioning ball 803, a fixed pulling claw 804, a movable pulling claw 805 and a fixed screw 806;
the claw handle 802 is in a rod-shaped structure, a threaded through hole is machined in the center of the claw handle 802, and the threaded through hole is matched with the screw 801;
the lower end of the claw handle 802 is connected with one end of a fixed pulling claw 804, the fixed pulling claw 804 is vertically connected with the claw handle 802, the fixed pulling claw 804 is in a rod-shaped structure, and 2 fixed screws 806 are arranged at the other end of the fixed pulling claw 804;
the upper end of the claw handle 802 is connected with one end of a movable pulling claw 805, the movable pulling claw 805 is movably connected with the claw handle 802, the movable pulling claw 805 is of a rod-shaped structure, and 2 fixing screws 806 are arranged at the other end of the movable pulling claw 805;
the fixed pulling claw 804 and the movable pulling claw 805 are arranged on the same side of the claw handle 802;
one end of the screw 801 and one end of the fixed pull claw 804 are provided with a positioning ball 803;
when the upper tube seat 3 is compressed, firstly, the supporting auxiliary structure is installed from the upper end of the upper tube seat 3, the length of the adjusting screw 702 is adjusted, the baffle disk 703 is propped against the guide tube clamping tube in the upper tube seat 3, the clamping tube is prevented from moving during compression, the spring is prevented from being twisted, the positioning clamp 706 clamps the lifting lug at the side edge of the upper tube seat 3, and the supporting auxiliary structure is prevented from moving circularly relative to the upper tube seat 3 during compression;
then 2 fixing screws 806 arranged at the free end of the fixing pull claw 804 are hooked on the process hole on one side of the wing plate of the upper tube seat 3, 2 fixing screws 806 arranged at the free end of the movable pull claw 805 are hooked on the process hole on the other side of the wing plate of the upper tube seat 3, and then the positioning ball 803 is placed in a positioning hole 705 machined in the center of the positioning disc 701, and the screw 801 is rotated to compress the upper tube seat 3.
The invention relates to a device for compressing, assembling and measuring an upper tube seat of a fuel assembly, which also comprises a V-shaped bracket 2, a tube seat supporting table 4, a platform 5 and a supporting table guide rail 6;
the platform 5 is arranged on the machine tool table 1, 2 support table guide rails 6 are arranged on the platform 5 in parallel, the tube seat support table 4 can slide along the support table guide rails 6, a V-shaped support 2 is arranged on the tube seat support table 4, and the V-shaped support 2 is used for supporting the upper tube seat 3;
the compressed upper tube seat 3, the supporting auxiliary structure 7 and the compression tool structure 8 are arranged on the V-shaped bracket 2, the compressed upper tube seat 3 is moved by sliding the supporting table guide rail 6 to be close to the guide tube opening of the rod bundle assembly, and then the upper tube seat 3 is pushed into the guide tube to finish assembly.
The invention relates to a device for compressing, assembling and measuring an upper tube seat of a fuel assembly, which also comprises a measuring baffle 9, a secondary ruler 10, a main ruler 11 and a measuring baffle guide rail 12;
the platform 5 is also provided with a measuring baffle guide rail 12, the measuring baffle guide rail 12 and the supporting table guide rail 6 are on the same horizontal plane, and the measuring baffle 9 can slide along the measuring baffle guide rail 12 so as to ensure that the measuring baffle 9 can be tightly attached to the upper end surface of the upper tube seat 3, thereby ensuring the measuring precision;
the measuring baffle 9 is provided with a main scale 11, and the main scale 11 is provided with an auxiliary scale 10;
after the upper tube seat 3 is assembled, the supporting auxiliary structure 7 and the compression tool structure 8 are removed, the measuring baffle 9 is slid to be tightly attached to the upper end face of the upper tube seat 3, and then the main ruler 11 and the auxiliary ruler 10 are matched to finish the length measurement of the upper tube seat 3.
Claims (5)
1. The device for compressing, assembling and measuring the upper tube seat of the fuel assembly is characterized by comprising a supporting auxiliary structure and a compressing tool structure;
the supporting auxiliary structure comprises a positioning disc, an adjusting screw, a baffle disc, a process hole, a positioning hole and a positioning clamp;
the positioning disc and the baffle disc are of disc structures and are connected through an adjusting screw;
3 threaded holes which are arranged in a triangular manner are processed on the positioning disc, and the threaded holes are matched with the adjusting screw;
a positioning hole is formed in the center of the positioning disc, and the positioning hole is a blind hole;
the side edge of the positioning disc is provided with a positioning card, and the positioning card is provided with a bulge in the direction pointing to the baffle disc;
processing a plurality of process holes in the rest space of the positioning disk, wherein the process holes are through holes;
the compression tool structure comprises a screw, a claw handle, a positioning ball, a fixed pulling claw, a movable pulling claw and a fixed screw;
the claw handle is of a rod-shaped structure, a threaded through hole is machined in the center of the claw handle, and the threaded through hole is matched with the screw rod;
the lower end of the claw handle is connected with one end of a fixed pulling claw, the fixed pulling claw is vertically connected with the claw handle, the fixed pulling claw is of a rod-shaped structure, and the other end of the fixed pulling claw is provided with 2 fixed screws;
the upper end of the jaw handle is connected with one end of a movable pulling jaw, the movable pulling jaw is movably connected with the jaw handle, the movable pulling jaw is in a rod-shaped structure, and the other end of the movable pulling jaw is provided with 2 fixing screws;
the fixed pulling claw and the movable pulling claw are arranged on the same side of the claw handle;
one end of the screw rod, which faces the fixed pull claw, is provided with a positioning ball;
when the upper tube seat is compressed, the supporting auxiliary structure is firstly installed from the upper end of the upper tube seat, and the length of the adjusting screw rod is adjusted, so that the baffle disc props against the guide tube clamping tube in the upper tube seat, and the lifting lug at the side edge of the upper tube seat is positioned and clamped;
then 2 fixing screws arranged at the free ends of the fixing pull claws are hooked on the process holes on one side of the wing plate of the upper tube seat, 2 fixing screws arranged at the free ends of the movable pull claws are hooked on the process holes on the other side of the wing plate of the upper tube seat, and then the positioning balls are placed in the positioning holes machined in the center of the positioning disc, and the screws are rotated to compress the upper tube seat.
2. The apparatus for compression assembly and measurement of a fuel assembly top nozzle of claim 1, further comprising a V-bracket, a nozzle support table, a platform and a support table rail;
the platform sets up on the lathe platform, and parallel arrangement 2 brace table guide rails on the platform, and the tube socket brace table slides along the brace table guide rail, sets up V type support on the tube socket brace table, and V type support is used for supporting the upper tube socket.
3. The device for compression assembly and measurement of the upper tube seat of the fuel assembly according to claim 2, wherein the compressed upper tube seat, the supporting auxiliary structure and the compression tooling structure are arranged on the V-shaped bracket, the compressed upper tube seat is moved by sliding through the guide rail of the supporting table to be close to the tube opening of the guide tube of the rod bundle assembly, and then the upper tube seat is pushed into the guide tube to complete the assembly.
4. A device for compression assembly and measurement of a fuel assembly top nozzle as set forth in claim 3 further comprising a measuring baffle, a secondary ruler, a main ruler and a measuring baffle guide;
the platform is also provided with a measuring baffle guide rail, the measuring baffle guide rail and the supporting table guide rail are on the same horizontal plane, the measuring baffle slides along the measuring baffle guide rail, and the measuring baffle can be tightly attached to the upper end face of the upper tube seat;
the measuring baffle is provided with a main ruler, and the main ruler is provided with an auxiliary ruler.
5. The device for compression assembly and measurement of a fuel assembly top nozzle of claim 4, wherein after the top nozzle is assembled, the support auxiliary structure and the compression tooling structure are removed, the measurement baffle is slid into close contact with the top end surface of the top nozzle, and then the length measurement in the top nozzle direction is completed by the cooperation of the main ruler and the auxiliary ruler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611241449.2A CN108257696B (en) | 2016-12-29 | 2016-12-29 | Device for compressing, assembling and measuring upper tube seat of fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611241449.2A CN108257696B (en) | 2016-12-29 | 2016-12-29 | Device for compressing, assembling and measuring upper tube seat of fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108257696A CN108257696A (en) | 2018-07-06 |
| CN108257696B true CN108257696B (en) | 2023-08-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611241449.2A Active CN108257696B (en) | 2016-12-29 | 2016-12-29 | Device for compressing, assembling and measuring upper tube seat of fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108257696B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4078967A (en) * | 1976-07-26 | 1978-03-14 | Combustion Engineering, Inc. | Holddown device for nuclear fuel assembly |
| EP0189133A2 (en) * | 1985-01-25 | 1986-07-30 | Westinghouse Electric Corporation | Apparatus and method for preassembling a top nozzle subassembly for a nuclear fuel assembly |
| US4620960A (en) * | 1984-08-27 | 1986-11-04 | Westinghouse Electric Corp. | Method and apparatus for removably mounting a top nozzle on a nuclear reactor fuel assembly |
| CN86101874A (en) * | 1985-03-25 | 1986-11-05 | 西屋电气公司 | Link closely and dismantle the apparatus and method that the head tube nozzle subassembly is used from the fuel assembly that can re-assembly |
| EP0201753A1 (en) * | 1985-05-01 | 1986-11-20 | Westinghouse Electric Corporation | Apparatus for applying and end plug to an end of a nuclear fuel rod tube |
| FR2693825A1 (en) * | 1992-07-20 | 1994-01-21 | Framatome Sa | Nuclear fuel assembly with axial guide tubes - whose upper ends attach to a plate axially slidable inside upper sleeve to accommodate tube deformation |
| US5479464A (en) * | 1994-08-30 | 1995-12-26 | Westinghouse Electric Corporation | Expandable top nozzle and device for securing same to a nuclear fuel assembly |
| WO2005071694A2 (en) * | 2003-12-22 | 2005-08-04 | Areva Np | Core of a nuclear reactor cooled by pressurized water and core fuel assembly |
| CN204242596U (en) * | 2014-11-13 | 2015-04-01 | 中科华核电技术研究院有限公司 | Nuclear reactor core pressing assembly and fuel assembly for nuclear reactor |
| CN204613032U (en) * | 2015-06-02 | 2015-09-02 | 中国核动力研究设计院 | A kind of test unit measuring the distortion of reactor fuel assemblies base |
| CN205406100U (en) * | 2015-12-31 | 2016-07-27 | 中核建中核燃料元件有限公司 | Upper tube base backup pad |
| CN106141989A (en) * | 2016-08-09 | 2016-11-23 | 中国人民解放军第五七二工厂 | A kind of piston attaching/detaching apparatus in pressurized strut |
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2016
- 2016-12-29 CN CN201611241449.2A patent/CN108257696B/en active Active
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| US4078967A (en) * | 1976-07-26 | 1978-03-14 | Combustion Engineering, Inc. | Holddown device for nuclear fuel assembly |
| US4620960A (en) * | 1984-08-27 | 1986-11-04 | Westinghouse Electric Corp. | Method and apparatus for removably mounting a top nozzle on a nuclear reactor fuel assembly |
| EP0189133A2 (en) * | 1985-01-25 | 1986-07-30 | Westinghouse Electric Corporation | Apparatus and method for preassembling a top nozzle subassembly for a nuclear fuel assembly |
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| EP0201753A1 (en) * | 1985-05-01 | 1986-11-20 | Westinghouse Electric Corporation | Apparatus for applying and end plug to an end of a nuclear fuel rod tube |
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| US5479464A (en) * | 1994-08-30 | 1995-12-26 | Westinghouse Electric Corporation | Expandable top nozzle and device for securing same to a nuclear fuel assembly |
| WO2005071694A2 (en) * | 2003-12-22 | 2005-08-04 | Areva Np | Core of a nuclear reactor cooled by pressurized water and core fuel assembly |
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| CN204613032U (en) * | 2015-06-02 | 2015-09-02 | 中国核动力研究设计院 | A kind of test unit measuring the distortion of reactor fuel assemblies base |
| CN205406100U (en) * | 2015-12-31 | 2016-07-27 | 中核建中核燃料元件有限公司 | Upper tube base backup pad |
| CN106141989A (en) * | 2016-08-09 | 2016-11-23 | 中国人民解放军第五七二工厂 | A kind of piston attaching/detaching apparatus in pressurized strut |
| CN206421830U (en) * | 2016-12-29 | 2017-08-18 | 中核建中核燃料元件有限公司 | A kind of device that assembling and measurement are compressed for upper pipe seat of fuel component |
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| Publication number | Publication date |
|---|---|
| CN108257696A (en) | 2018-07-06 |
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