CN202422773U - Fuel rod replacing device with inspection function - Google Patents
Fuel rod replacing device with inspection function Download PDFInfo
- Publication number
- CN202422773U CN202422773U CN201120389372XU CN201120389372U CN202422773U CN 202422773 U CN202422773 U CN 202422773U CN 201120389372X U CN201120389372X U CN 201120389372XU CN 201120389372 U CN201120389372 U CN 201120389372U CN 202422773 U CN202422773 U CN 202422773U
- Authority
- CN
- China
- Prior art keywords
- fuel rod
- outer tube
- replacing device
- outer sleeve
- instrument outer
- 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.)
- Expired - Lifetime
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Classifications
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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
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model provides a fuel rod replacing device with an inspection function. The device comprises a cylindrical tool outer sleeve, an elongated rack is fixed in the tool outer sleeve, a fuel rod grappling fixture enters the inside of the tool outer sleeve from the bottom end of the tool outer sleeve to be connected with the rack matched with a gear, the rack is driven by the gear to move to drive the fuel rod grappling fixture to vertically move in the tool outer sleeve, and a vortex coil with a vortex inspection function is further fixed on the outer surface of the lower portion of the tool outer sleeve. The inspection function is added on the fuel rod replacing device so that fuel rod inspection and replacing work can be completed simultaneously in a spent fuel assembly reparative process, and the fuel rod replacing device greatly reduces risks in the spent fuel assembly reparative process and obtains good using effects in application and use.
Description
Technical field
The utility model relates to a kind of fuel rod replacing device, is specifically related to a kind of fuel rod replacing device with audit function.
Background technology
PWR nuclear power plant reloads in the process, finds that sometimes the fuel rod of multiplexing fuel assembly and fuel rod grid spacer coaming plate have damage in various degree.Damaged security, the economy to power plant's operation of fuel assembly appearance all produces significant impact behind the irradiation; Damaged fuel assembly carries out in the repair process after to irradiation for this reason; Need fuel rod be released from fuel assembly and carry out eddy current inspection; To judge whether fuel rod has damaged situation to occur, also need intact fuel rod be returned install in the irradiated fuel assembly after inspection finishes and go.
To reach back the inspection of dress and the damaged situation of fuel rod be two different working steps to the withdrawing of fuel rod in fuel assembly in the spentnuclear fuel repair process; And the withdrawing of fuel rod in irradiated fuel assembly reach back the dress all be the very high action of risk; The withdrawing that reduces fuel rod reaches back the effective way that the number of times of adorning is the reduction risk, but does not still have fuel rod inspection simultaneously and replacing function instrument at present both at home and abroad.
Summary of the invention
The utility model purpose is to provide a kind of fuel rod replacing device with audit function, and it can realize eddy current inspection simultaneously at spent fuel rods in the withdrawing process from fuel assembly.
Realize the technical scheme of the utility model purpose: a kind of fuel rod replacing device with audit function; It comprises the instrument outer tube of a long tubular; Instrument outer tube internal fixation has the tooth bar of strip, and the fuel rod grappling fixture gets into its inside and is connected with tooth bar from instrument outer tube bottom, and rack and pinion cooperates; Through the motion of gear driven tooth bar, in the instrument outer tube, move up and down thereby drive the fuel rod grappling fixture; Also be fixed with eddy current coil in instrument outer tube lower external face with eddy current inspection function.
Aforesaid a kind of fuel rod replacing device with audit function, its described instrument outer tube top is provided with the device suspension hook.
Aforesaid a kind of fuel rod replacing device with audit function, its described instrument outer tube length and fuel rod equal in length.
The effect of the utility model is: the described a kind of fuel rod replacing device with audit function of the utility model; It has increased the function of inspection on fuel rod replacing device; Can realize that for this reason the fuel rod inspection is accomplished with more changing jobs simultaneously in the irradiated fuel assembly repair process; Greatly reduce the risk in the irradiated fuel assembly repair process, and this device, practice has all been obtained good result of use in using.
Description of drawings
Fig. 1 is the described a kind of fuel rod replacing device structural representation with audit function of the utility model;
Fig. 2 is an identification division partial enlarged drawing among Fig. 1.
Among the figure: 1. install suspension hook; 2. gear; 3. tooth bar; 4. instrument outer tube; 5. eddy current coil; 6. fuel rod grappling fixture.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the described a kind of fuel rod replacing device with audit function of the utility model is further described.
As shown in Figure 1; A kind of fuel rod replacing device of the present invention with audit function, it comprises the instrument outer tube 4 of a long tubular, instrument outer tube 4 internal fixation have the tooth bar 3 of strip; Fuel rod grappling fixture 6 gets into its inside and is connected with tooth bar 3 from instrument outer tube 4 bottoms; Tooth bar 3 cooperates with gear 2, drives tooth bar 3 motions through gear 2, moves up and down in instrument outer tube 4 thereby drive fuel rod grappling fixture 6.Also be fixed with eddy current coil 5 with eddy current inspection function in instrument outer tube 4 lower external face.Be provided with device suspension hook 1 at instrument outer tube 4 tops.
The utility model is described, and to have the fuel rod replacing device job step of audit function following:
(1) utilize fuel rod grappling fixture 6 to catch fuel rod.
(2) gear 2 drives tooth bars 3 and accomplishes fuel rods and in fuel assembly, pull and push function up and down.
(3) eddy current coil 5 of device bottom installation, in the process of withdrawing, fuel rod passes eddy current coil 5 about fuel rod, thereby realizes the eddy current inspection to fuel rod.
Claims (3)
1. fuel rod replacing device with audit function; It is characterized in that: this device comprises the instrument outer tube (4) of a long tubular; Instrument outer tube (4) internal fixation has the tooth bar (3) of strip, and fuel rod grappling fixture (6) gets into its inside and is connected with tooth bar (3) from instrument outer tube (4) bottom, and tooth bar (3) cooperates with gear (2); Drive tooth bar (3) motion through gear (2), in instrument outer tube (4), move up and down thereby drive fuel rod grappling fixture (6); Also be fixed with eddy current coil (5) with eddy current inspection function in instrument outer tube (4) lower external face.
2. a kind of fuel rod replacing device with audit function according to claim 1 is characterized in that: described instrument outer tube (4) top is provided with device suspension hook (1).
3. a kind of fuel rod replacing device with audit function according to claim 1 is characterized in that: described instrument outer tube (4) length and fuel rod equal in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120389372XU CN202422773U (en) | 2011-10-13 | 2011-10-13 | Fuel rod replacing device with inspection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120389372XU CN202422773U (en) | 2011-10-13 | 2011-10-13 | Fuel rod replacing device with inspection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422773U true CN202422773U (en) | 2012-09-05 |
Family
ID=46747509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120389372XU Expired - Lifetime CN202422773U (en) | 2011-10-13 | 2011-10-13 | Fuel rod replacing device with inspection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979637A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | The connection handle grappling fixture and transfer device to disintegrate under water for spentnuclear fuel associated component |
-
2011
- 2011-10-13 CN CN201120389372XU patent/CN202422773U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979637A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | The connection handle grappling fixture and transfer device to disintegrate under water for spentnuclear fuel associated component |
| CN109979637B (en) * | 2017-12-27 | 2024-02-09 | 核动力运行研究所 | Connecting handle grabbing head and transferring device for underwater disassembly of spent fuel related assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |