CN211728066U - Nuclear fuel assembly spacer grid size adjustment tool - Google Patents
Nuclear fuel assembly spacer grid size adjustment tool Download PDFInfo
- Publication number
- CN211728066U CN211728066U CN201922374040.3U CN201922374040U CN211728066U CN 211728066 U CN211728066 U CN 211728066U CN 201922374040 U CN201922374040 U CN 201922374040U CN 211728066 U CN211728066 U CN 211728066U
- Authority
- CN
- China
- Prior art keywords
- spacer grid
- fuel assembly
- fixing seat
- nuclear fuel
- grid
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A nuclear fuel assembly spacer grid size adjusting tool comprises a clamp body, wherein the clamp body is connected with an insert fixing seat, a limiting screw is installed at the bottom of the insert fixing seat, and the insert fixing seat is connected with an insert. The utility model provides a size adjustment before the spacer grid welds realizes the control to spacer grid product quality to reduce the operation degree of difficulty, improve production efficiency.
Description
Technical Field
The invention relates to the field of nuclear fuel element manufacturing, in particular to a nuclear fuel assembly spacer grid size adjusting tool.
Background
The grid cell tube in the nuclear fuel assembly belongs to a square tube thin-wall structure, four planes and four arc surfaces are symmetrically processed on a thin-wall arc, and pressure resistance welding is selected for welding.
At this stage, most of the structural types of fuel assemblies are assembled by welding in sheet strips, such as AFA3G fuel assembly grids and AP1000 fuel assembly grids. The manufacturing process of the grid by using pipes is less, so that for the fuel assembly, the positioning grid needs to be clamped and fixed and the size of the positioning grid needs to be adjusted before welding, so that the welded positioning grid meets the technical requirements of products, and no special adjusting method is used for adjusting the size of the grid. The adjustment is typically done using a generic tool. The method can not only effectively adjust the size of the spacer grid, but also can cause damage to grid cells and outer strips.
For the above reasons, a grid size adjusting tool which is easy and convenient to operate should be designed, and an effective and reliable method should be established on the basis of the tool to solve the problem.
Disclosure of Invention
The invention aims to: the nuclear fuel assembly spacer grid size adjusting tool is provided, the problem of size adjustment of a spacer grid before welding is solved, the control of the quality of spacer grid products is realized, the operation difficulty is reduced, and the production efficiency is improved.
The technical scheme of the invention is as follows: a nuclear fuel assembly spacer grid size adjusting tool comprises a clamp body, wherein the clamp body is connected with an insert fixing seat, a limiting screw is installed at the bottom of the insert fixing seat, and the insert fixing seat is connected with an insert.
The clamp body is connected with the plug-in fixing seat through a fixing screw.
The plug-in components fixing seat is connected with the plug-in components through welding.
The invention has the following remarkable effects: the grid size can be conveniently adjusted by using the positioning grid size adjusting tool, and the deformation of the positioning grid can not be caused in the adjusting process. The problem that the size defects easily occur in the production and manufacturing process of the positioning grid can not be repaired is solved, the grid is prevented from being scrapped, the product quality is improved to a greater extent, the product quality requirement is met, and the grid qualification rate is improved.
The labor intensity of operators is reduced, and certain economic cost is saved. By manufacturing an adjusting tool, a grid size adjusting rule is formulated, a complete grid manufacturing process is established, and the manufacturing capability of the fuel element is completed in a matching way.
Drawings
FIG. 1 is a schematic illustration of a nuclear fuel assembly spacer grid sizing tool;
FIG. 2 is a schematic view of a card holder
In the figure: the clamp comprises a clamp body 1, a fixing screw 2, a plug-in fixing seat 3, a plug-in 4 and a limiting screw 5
Detailed Description
A nuclear fuel assembly spacer grid size adjusting tool comprises a clamp body 1, the clamp body 1 is connected with an insert fixing seat 3 through a fixing screw 2, a limiting screw 5 is arranged at the bottom of the insert fixing seat 3, the insert fixing seat 3 is connected with an insert 4 through welding,
the grid framework can not deform due to excessive force applied by human factors during size adjustment, the plug-in units can be directly replaced after being worn due to excessive use times, and the integral replacement is not required
Before welding, the positioning grid is installed in a welding fixture and fixed, corresponding adjusting tools are used according to different positions and are placed on two sides of a part to be adjusted, a certain pressure is applied to enable the deformed part or the misplaced part to recover the required size, and meanwhile, the welding fixture is locked, so that the positioning grid meets the welding requirement.
Claims (3)
1. A nuclear fuel assembly spacer grid sizing tool, comprising: the clamp comprises a clamp body (1), wherein the clamp body (1) is connected with a plug-in fixing seat (3), a limiting screw (5) is installed at the bottom of the plug-in fixing seat (3), and the plug-in fixing seat (3) is connected with a plug-in (4).
2. The nuclear fuel assembly spacer grid sizing tool of claim 1, wherein: the clamp body (1) is connected with the plug-in unit fixing seat (3) through a fixing screw (2).
3. The nuclear fuel assembly spacer grid sizing tool of claim 1, wherein: the plug-in fixing seat (3) is connected with the plug-in (4) through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374040.3U CN211728066U (en) | 2019-12-26 | 2019-12-26 | Nuclear fuel assembly spacer grid size adjustment tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374040.3U CN211728066U (en) | 2019-12-26 | 2019-12-26 | Nuclear fuel assembly spacer grid size adjustment tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211728066U true CN211728066U (en) | 2020-10-23 |
Family
ID=72872392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922374040.3U Active CN211728066U (en) | 2019-12-26 | 2019-12-26 | Nuclear fuel assembly spacer grid size adjustment tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211728066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042599A (en) * | 2021-03-29 | 2021-06-29 | 成都腾达模具有限公司 | Processing method of qualified grid cell tube |
-
2019
- 2019-12-26 CN CN201922374040.3U patent/CN211728066U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042599A (en) * | 2021-03-29 | 2021-06-29 | 成都腾达模具有限公司 | Processing method of qualified grid cell tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201584429U (en) | Automatic framing machine | |
| CN211728066U (en) | Nuclear fuel assembly spacer grid size adjustment tool | |
| CN203649742U (en) | Workpiece fixing platform for automobile exhaust manifold welding jig | |
| CN206123003U (en) | Commercial affairs car backrest fixture assembly | |
| CN104493409A (en) | Welding fixture | |
| CN203853604U (en) | Cutting and positioning device of milling machine module | |
| CN208322576U (en) | Pressure code fixture suitable for penstock tile weld seam | |
| CN208628611U (en) | A kind of plate fin type heat exchanger core brazing tooling | |
| CN203592249U (en) | Cabin welding tool | |
| CN214770042U (en) | Welding device for sheet metal parts | |
| CN109604904A (en) | A kind of nuclear fuel assembly grid spacer welding fixture | |
| CN209774506U (en) | Four-point positioning fuel assembly framework assembling device | |
| CN103506746B (en) | A kind of anti-deformation processing method of apparatus for fixing transformer pulling plate magnet isolation tank and specific purpose tool | |
| CN206882799U (en) | A kind of pipe fitting processes numerical control lathe tool fixing seat | |
| CN203495466U (en) | Reversible deformation device for heavy H steel welding | |
| CN208513962U (en) | Convenient type tricycle wind deflector welds auxiliary tool | |
| CN203209865U (en) | Welding cooling and flattening device of metal sheets | |
| CN201385198Y (en) | Weld universal jig of lithium battery seal | |
| CN105234705A (en) | Clamp used on mechanical device | |
| CN206230133U (en) | It is a kind of to drag the auxiliary mould of a components welding for installing | |
| CN210549541U (en) | Pneumatic tool clamp of air compressor connecting rod | |
| CN211540059U (en) | A anchor clamps that is used for quick clamping that fuel assembly skeleton was made | |
| CN211588059U (en) | Special hydraulic model adjusting device | |
| CN214476431U (en) | Assembly tool for upper tube seat and plate spring of fuel assembly | |
| CN213105271U (en) | Welding jig mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |