CN107068208A - Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly - Google Patents
Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly Download PDFInfo
- Publication number
- CN107068208A CN107068208A CN201710106929.6A CN201710106929A CN107068208A CN 107068208 A CN107068208 A CN 107068208A CN 201710106929 A CN201710106929 A CN 201710106929A CN 107068208 A CN107068208 A CN 107068208A
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- connection sleeve
- locking tube
- annular
- pipe
- 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.)
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly, connection sleeve pipe and locking tube are arranged in base, locking tube is arranged in connection sleeve pipe through the top of connection sleeve pipe, annular bulging of the direction away from respective center line along radially bent formation is provided with the wall of connection sleeve pipe and the wall of locking tube, it is provided with the outer wall of connection sleeve pipe and the outer wall of locking tube and each internal longitudinal grooving connected, longitudinal grooving is each passed through after corresponding annular bulging to be connected with the top of corresponding connection sleeve pipe or the top of locking tube, the guide pipe through-hole wall that connection sleeve pipe and locking tube are installed in upper base is recessed the annular expansion groove that shape is mutually matched with annular bulging, and annular bulging is arranged on corresponding annular and expanded in groove.The structure and its device method of tearing open can realize the fast and reliable connection between upper pipe seat of fuel component and guide pipe, and it is mounted and dismounted fast, and section work is time saving, with good maintainability.
Description
Technical field
The invention belongs to fuel assembly for nuclear reactor technical field, and in particular to a kind of quick removable fuel assembly top
Attachment structure and its mounting and dismounting method.
Background technology
The connection of fuel assembly top is the structure for making fuel assembly guide pipe top be connected with upper base.At present
On AFA3G fuel assemblies in portion connecting structure, upper base is connected with guide pipe using removable structure, i.e. guide pipe upper end and screw thread
Sleeve expanded joint is connected, and the telescope-srew with shirt rim is threaded into sleeve through upper base connecting hole, then will using specific purpose tool
The shirt rim expanded joint of sleeve pipe screw prevents telescope-srew from loosening in the groove of upper base connecting plate.When fuel assembly is repaired, apply
Enough opposing torques can back out telescope-srew, so as to remove base and change burst slug rod.Due to the connection of AFA3G tops
Using threaded connection, dismantle and reassemble operation and more bother, it is time-consuming more, do not reach quick removable purpose.And can during dismounting
Telescope-srew can be caused to kill, telescope-srew may also be produced when reassembling and twists situation not in place.
The content of the invention
The technical problems to be solved by the invention are that existing fuel assembly top connection uses threaded connection, dismantle and reassemble
Operation is more bothered, and takes more, and is likely to result in telescope-srew during dismounting and is killed, telescope-srew may also be produced when reassembling and is twisted
Situation not in place, therefore a kind of quick removable fuel assembly top connection is devised, the structure and its device tear method energy open
The fast and reliable connection between upper pipe seat of fuel component and guide pipe is enough realized, it is mounted and dismounted fast, and section work is time saving, with good
Good maintainability.
The present invention is achieved through the following technical solutions：
Portion connecting structure on a kind of quick removable fuel assembly, including upper base, connection sleeve pipe and locking tube, it is described
The top of connection sleeve pipe and the top of locking tube are arranged in base, and the top of locking tube is arranged on the top of connection sleeve pipe
End top, the bottom of locking tube is arranged in connection sleeve pipe through the top of connection sleeve pipe, wall and locking in connection sleeve pipe
Annular bulging of the direction away from respective center line along radially bent formation is provided with the wall of pipe, and in connection
The longitudinal grooving connected with respective inside is provided with the outer wall of sleeve pipe and the outer wall of locking tube, and longitudinal grooving is each passed through
Connected after corresponding annular bulging with the top of corresponding connection sleeve pipe or the top of locking tube, connection sleeve pipe is installed in upper base
The annular expansion groove that several shapes are mutually matched with annular bulging, and annular are recessed with the guide pipe through-hole wall of locking tube
Bulging is arranged on corresponding annular and expanded in groove.
In fuel assembly for nuclear reactor, the connection of fuel assembly top is fuel assembly guide pipe top is connected with upper base
Pick up the structure come.On current New-type fuel component in portion connecting structure, upper base is needed using quick removable knot with guide pipe
Structure is connected, and could meet use requirement.And AFA3G fuel assemblies top connection now uses thread connecting mode, i.e. guide pipe
Upper end is connected with screw shell expanded joint, and the telescope-srew with shirt rim is threaded into sleeve through upper base connecting hole, then uses
Specific purpose tool prevents telescope-srew from loosening by the groove of the shirt rim expanded joint of sleeve pipe screw to upper base connecting plate.In fuel stack
When part is repaired, telescope-srew can be backed out by applying enough opposing torques, so as to remove base and change burst slug rod.Due to
AFA3G tops are connected using threaded connection, are dismantled and are reassembled operation and more bother, time-consuming more, do not reach quick removable mesh
, and be likely to result in telescope-srew during dismounting and kill, telescope-srew may also be produced when reassembling and twists situation not in place.Application number
A kind of removable guide pipe of rotation-upper base connector, including spinner cap are disclosed for 201310012299.8 Chinese patent
With spinner sleeve pipe, both at circular tube structure, it is fitted close and is connected by spinner structure between the two；Wherein, spinner cap
Top is elastic shirt rim, and elastic shirt rim middle and lower part is provided with semi-cylindrical hill；It is circumferential on elastic shirt rim to be uniformly provided with several longitudinal directions
Elastic shirt rim is divided into some valves by groove, longitudinal groove；The inner face bottom of spinner cap has been evenly distributed and spinner line number
The raised spinner buckle of identical is measured, some operate interfaces are provided with vertically between elastic shirt rim and spinner buckle；Spinner sleeve pipe
External wall of upper portion be circumferentially evenly arranged spinner line and catching groove with the matching of the spinner buckle of spinner cap, revolved with the formation of spinner buckle
Buckle structure；The bottom of spinner sleeve pipe is provided with guiding interface tube.The structure be able to should be prevented in fuel assembly operation transport and heap
Occur Joint failure or to release during operation, while can easily be dismantled by remote operated vehicles when needed and again
Dress.But the connector need to apply certain turning moment could realize elastic shirt rim on installation and removal, spinner cap without
Method plays a part of quick positioning and quick locking, thus the removable connector of the rotation does not reach quick removable purpose.Especially
It is that in fuel assembly for nuclear reactor technology, the mode of rotation dismounting easily causes the scraping to part, causes part occur
It is uneven, easily there is gap when screwing, then connection is easily failed, and this is breakneck existing in nuclear reactor
As.
The technical program is then by being provided with the wall of connection sleeve pipe and the wall of locking tube away from each
From the direction of center line along the annular bulging of radially bent formation, connection sleeve pipe epimere and locking tube epimere are elastic skirt
Side, both connection sleeve pipe and locking tube are circular tube structure, each other be fitted close and by respective annular bulging with it is upper
The annular that base is oriented in pipe through-hole expands groove and is engaged the locking for realizing top connection.In the outer wall and locking tube of connection sleeve pipe
Be provided with outer wall with each internal longitudinal grooving connect, and longitudinal direction grooving be each passed through after corresponding annular bulging with it is right
Elastic shirt rim is divided into some valves, upper base by the top for the connection sleeve pipe answered or the top connection of locking tube, longitudinal grooving
The guide pipe through-hole wall for installing connection sleeve pipe and locking tube is recessed the ring that several shapes are mutually matched with annular bulging
Shape expands groove, and annular bulging is arranged on into corresponding annular when mounted expands in groove, and is extruded by elastic shirt rim and opens pressure
It is tight to expand in annular in groove, to realize the fast and reliable connection between upper pipe seat of fuel component and guide pipe.The technical program by
Set longitudinal grooving to cut side wall to form elastic shirt rim in connection sleeve pipe and locking tube, and combine annular bulging formation and lean outward
Tiltedly, while annular bulging can expand groove cooperation with annular causes fixation, and need to only there is up and down action in assembly and disassembly, and
It is not required to be rotated, with regard to quick removable purpose can be reached.
Also be provided with that several connect with inside it on the wall of connection sleeve pipe and the wall of locking tube simultaneously moves back
Cutter groove, and escape is separately positioned on below corresponding longitudinal grooving and connected with longitudinal grooving bottom.Escape is to be used to add
Man-hour is easy to cutter to exit, and eliminates stress concentration, escape is semi-circular hole, has a diameter larger than the width of longitudinal grooving, will also
Phase in longitudinal grooving and corresponding connection sleeve pipe or locking tube diameter parallel, and longitudinal grooving in connection sleeve pipe or locking tube
Distance is equal between adjacent longitudinal grooving.Such Stability Analysis of Structures, action is consistent.
The quantity of annular expansion groove is preferably designed as the annular bulging quantity on annular bulging and the locking tube in connection sleeve pipe
Sum.Quantity of formation coordinates, and can either ensure stability during connection, also will not wasting space, annular bulging quantity is at least
Two.
The bottom of upper base is provided with targeting port, and targeting port is in horn-like, and the larger one end of end face is arranged on pipe
On the bottom surface of seat, the less one end of end face it is identical with guide pipe clear size of opening and with guide pipe through hole end capitiform into being smoothly connected,
It is easy to connection sleeve pipe to play guiding function when inserting, more facilitates and be accurately positioned.
The mounting and dismounting method of portion connecting structure on a kind of quick removable fuel assembly, including assembling process and unloading process,
Wherein assembling process is：Guide section first by connection sleeve pipe along upper base is inserted into the guiding pipe through-hole of upper base, is made
Obtaining the annular bulging of connection sleeve pipe can be engaged with the annular expansion groove of upper base；Secondly, locking tube is inserted into from top to bottom
In the guiding pipe through-hole of upper base so that the annular bulging of locking tube can expand groove with the annular of upper base and be engaged, meanwhile, lock
Tight pipe struts the elastic shirt rim of connection sleeve pipe outward so that it is close that the annular bulging of connection sleeve pipe and the annular of upper base expand groove
Ground coordinates；Unloading process：By instrument, through locking tube, simultaneously radial dilatation, to bite the base of locking tube, applies a upward axle
Xiang Li, makes to pull out from connection sleeve pipe after locking tube local deformation, by re-replacing locking tube, it becomes possible to complete fuel
The reparation of component.By the above method, it is mounted and dismounted fast, and section work is time saving, with good maintainability.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention is oriented to the annular in pipe through-hole by the respective annular bulging of connection sleeve pipe and locking tube and upper base
Expand groove to be engaged, it is possible to achieve the fast and reliable connection between upper pipe seat of fuel component and guide pipe；
2nd, the present invention can quickly be pulled out locking tube out of connection sleeve pipe by specific purpose tool, be easy to remote operation, can be with
Realize the fast quick-detach between upper pipe seat of fuel component and guide pipe；
3rd, the present invention is by reinserting locking tube, it is possible to achieve the reparation of fuel assembly.Present invention connection is reliable, installs
Quick with dismounting, section work is time saving, with good maintainability.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is fuel assembly top of the present invention attachment structure schematic diagram；
Fig. 2 is the structural representation of the locking tube of the present invention；
Fig. 3 is the structural representation of the connection sleeve pipe of the present invention；
Fig. 4 is the upper base structural representation matched with embodiment 1；
Fig. 5 is the top attachment structure schematic diagram of embodiment 2.
In figure, 1- locking tubes, 2- connection sleeve pipes, the upper bases of 3-, 11- locking tubular elastics shirt rim, 12- locking tube straight sections, 13-
Locking tube annular bulging, 14- locking tubes longitudinal direction grooving, 15- locking tube escapes, 21- connection sleeve pipes elasticity shirt rim, 22- connections
Sleeve pipe straight section, 23- connection sleeve pipes annular bulging one, 24- connection sleeve pipes longitudinal direction grooving, 25- connection sleeve pipe escapes, 26- connections
Sleeve pipe annular bulging two, 31- annulars expand groove one, and 32- annulars expand groove two, and 33- targeting ports, 34- annulars expand groove three.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment 1：
As shown in Figures 1 to 4, a kind of portion connecting structure on quick removable fuel assembly, its hardware configuration includes upper pipe
Seat 3, connection sleeve pipe 2 and locking tube 1, the wherein top of connection sleeve pipe 2 and the top of locking tube 1 are arranged in base 3,
And the top of locking tube 1 is arranged on the top end of connection sleeve pipe 2, the bottom of locking tube 1 is set through the top of connection sleeve pipe 2
In connection sleeve pipe 2, it is provided with the wall of connection sleeve pipe 2 and the wall of locking tube 1 away from respective center line
Annular bulging of the direction along radially bent formation, and be provided with the outer wall of connection sleeve pipe 2 and the outer wall of locking tube 1 with
Respective longitudinal grooving of internal connection, and longitudinal grooving is each passed through after corresponding annular bulging and corresponding connection sleeve pipe 2
Connection sleeve pipe 2 and the guide pipe through-hole wall concave shaped of locking tube 1 are installed in top or the connection of the top of locking tube 1, upper base 3
The annular that forming shape is mutually matched with annular bulging expands groove, and it is the annular bulging in connection sleeve pipe 2 that annular, which expands the quantity of groove,
With the annular bulging quantity sum on locking tube 1, and annular bulging is arranged on corresponding annular and expands in groove, also in connection sleeve pipe 2
Wall and locking tube 1 wall on be provided with the internal escape connected of several and its, and escape is separately positioned on
Connect below corresponding longitudinal grooving and with longitudinal grooving bottom.Need longitudinal grooving and corresponding connection sleeve pipe 2 or locking
Distance is equal between adjacent longitudinal grooving in the diameter parallel of pipe 1, and longitudinal grooving in connection sleeve pipe 2 or locking tube 1.For
Be easy to guiding, be also provided with targeting port 33 in the bottom of upper base 3, and targeting port 33 is in horn-like, and end face it is larger one
End be arranged on the bottom surface of base 3, the less one end of end face it is identical with guide pipe clear size of opening and with guide pipe through hole termination
Formation is smoothly connected.Connection sleeve pipe 1 is cut with the angle of inclination of each own elasticity shirt rim of locking tube 2, ring drums expansion rule cun and longitudinal direction
The functional requirement that the number of groove can be connected according to fuel assembly top carries out different designs.
Both locking tube 1 and connection sleeve pipe 2 are circular tube structure, are fitted close each other and pass through respective ring drums
Annular in the swollen guiding pipe through-hole with upper base 3 expands groove and is engaged the locking for realizing that top is connected.For convenience of describing, it will lock
1 point of pipe is two sections, and its epimere sets the part names of longitudinal grooving, escape and annular bulging to be locking tubular elastic shirt rim 11,
Hypomere straight section is named as locking tube straight section 12, and locking tubular elastic shirt rim 11 and locking tube straight section 12 are integrated, locking tube 1
On the escape that is named as on the longitudinal grooving 14 of locking tube, locking tube 1 of longitudinal grooving be named as locking tube escape 15, lock
Annular bulging on pipe 1 is named as the annular bulging 13 of locking tube, and by connection sleeve pipe, 2 points are two sections, the longitudinal grooving of its epimere setting,
Escape and the part names of annular bulging are the elastic shirt rim 21 of connection sleeve pipe, and hypomere straight section is named as connection sleeve pipe straight section 22,
Connection sleeve pipe elasticity shirt rim 21 and connection sleeve pipe straight section 22 are integrated, and the length of respective straight section can be according on fuel assembly
The functional requirement of portion's connection carries out different designs.Locking tubular elastic shirt rim 11 and the elastic shirt rim 21 of connection sleeve pipe lean outward
Tiltedly.The escape that longitudinal grooving in connection sleeve pipe 2 is named as in the longitudinal grooving 24 of connection sleeve pipe, connection sleeve pipe 2 is named as company
Annular bulging in female connector pipe escape 25, connection sleeve pipe 2 is named as the ring in the annular bulging 1 of connection sleeve pipe, upper base 3
It is two that shape, which expands slot number amount, is respectively designated as annular expansion groove 1 and annular expands groove 2 32, wherein annular expansion groove 1 is arranged on
Annular expands the top of groove 2 32, and during assembling, connection sleeve pipe 2 is inserted into the guiding of upper base 3 from the targeting port 33 of upper base 3 first
In pipe through-hole, due to being provided with the longitudinal grooving 24 of connection sleeve pipe on the elastic shirt rim 21 of connection sleeve pipe so that connection sleeve pipe annular bulging
One 23 can expand groove 2 32 with the annular of upper base 3 is engaged.Secondly, locking tube 1 is inserted into leading for upper base 3 from top to bottom
Into pipe through-hole, due to being provided with the longitudinal grooving 14 of locking tube on locking tubular elastic shirt rim 11 so that the locking tube annular energy of bulging 13
It is enough to be engaged with the annular expansion groove 1 of upper base 3.Meanwhile, locking tube 1 is past by the elastic shirt rim 21 of the connection sleeve pipe of connection sleeve pipe 2
Strut outside so that the annular bulging 1 of the connection sleeve pipe of connection sleeve pipe 2 can expand groove 2 32 with annular and closely coordinate.When
When the connection sleeve pipe 2 being connected with guide pipe is by downward pulling force, the annular bulging 1 of connection sleeve pipe of connection sleeve pipe 2 slides down
Dynamic, now locking tube 1 outwards oppresses connection sleeve pipe 2, produces frictional force and radial load so that the adapter sleeve pipe ring of connection sleeve pipe 2
Shape bulging 1 can not depart from annular and expand groove 2 32.When by sufficiently large pulling force so that the adapter sleeve pipe ring of connection sleeve pipe 2
When shape bulging 1 is straightened completely, connection sleeve pipe 2 can just depart from the constraint that annular on base 2 expands groove 2 32.In addition, locking
The longitudinal end of grooving 24 of connection sleeve pipe of the longitudinal grooving 14 of the locking tube of pipe 1 and connection sleeve pipe 2 is each provided with semicircle locking tube
Its object is to eliminate the stress concentration of longitudinal grooving for escape 15 and connection sleeve pipe escape 25.Finite Element Simulation Analysis table
Bright, the maximum pull that the fuel assembly top connection of the present embodiment can bear disclosure satisfy that the function that fuel assembly top is connected
Demand.
During the connection disassembling of fuel assembly top, only specific purpose tool through locking tube 1 and radial dilatation need to be bitten locking
The base of pipe 1, applies a upward axial force, makes to pull out from connection sleeve pipe after the local deformation of locking tube 1.Pass through weight
It is new to change locking tube, it is possible to complete the reparation of fuel assembly.
Portion connecting structure installation and removal are extremely simple and efficient on the fuel assembly of the present embodiment, and accurate positioning is reliable, section
Work is time saving.It is mechanical caging connection that locking tube 1 and connection sleeve pipe 2 are connected with upper base 3, without bulging.
Embodiment 2：
On the basis of embodiment 1, the present embodiment is further qualified to portion connecting structure on fuel assembly：Such as Fig. 5 institutes
Show, for the reliability of increase fuel assembly top connection, one can be set up again on the elastic shirt rim 21 of connection sleeve pipe of connection sleeve pipe 2
Road annular bulging, is named as in connection sleeve pipe annular bulging 2 26, i.e. connection sleeve pipe 2 and sets the annular bulging of twice.Correspondingly, on
Also one of annular is set up in the guiding pipe through-hole of base 3 and expands groove, annular is named as and expands groove 3 34, just should be set up with connection sleeve pipe 2
Annular bulging be engaged.Expand the cooperation of groove by the annular bulging of twice in connection sleeve pipe 2 and upper base 3 and annular, can be significantly
The reliability of increase fuel assembly top connection and the maximum pull that can bear.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (6)
1. portion connecting structure on a kind of quick removable fuel assembly, including upper base (3), connection sleeve pipe (2) and locking tube
(1), the top of the connection sleeve pipe (2) and the top of locking tube (1) are arranged in base (3), and the top of locking tube (1)
End is arranged on the top end of connection sleeve pipe (2), and the bottom of locking tube (1) is arranged on connection through the top of connection sleeve pipe (2)
In sleeve pipe (2), it is characterised in that be provided with the wall of connection sleeve pipe (2) and the wall of locking tube (1) away from each
From the direction of center line along the annular bulging of radially bent formation, and connection sleeve pipe (2) outer wall and locking tube (1) it is outer
Be provided with wall with each internal longitudinal grooving connect, and longitudinal direction grooving be each passed through after corresponding annular bulging with it is corresponding
Connection sleeve pipe (2) top or the top connection of locking tube (1), connection sleeve pipe (2) and locking tube are installed in upper base (3)
(1) guide pipe through-hole wall is recessed the annular expansion groove that several shapes are mutually matched with annular bulging, and annular bulging
Corresponding annular is arranged on to expand in groove.
2. portion connecting structure on a kind of quick removable fuel assembly according to claim 1, it is characterised in that the company
Several and its internal escape connected, and escape are provided with the wall of female connector pipe (2) and the wall of locking tube (1)
It is separately positioned on below corresponding longitudinal grooving and is connected with longitudinal grooving bottom.
3. portion connecting structure on a kind of quick removable fuel assembly according to claim 1, it is characterised in that described vertical
To grooving and corresponding connection sleeve pipe (2) or locking tube (1) diameter parallel, and it is vertical in connection sleeve pipe (2) or locking tube (1)
Into grooving, distance is equal between adjacent longitudinal grooving.
4. portion connecting structure on a kind of quick removable fuel assembly according to claim 1, it is characterised in that the ring
It is the annular bulging quantity sum in the annular bulging and locking tube (1) in connection sleeve pipe (2) that shape, which expands the quantity of groove,.
5. portion connecting structure on a kind of quick removable fuel assembly as claimed in any of claims 1 to 4, it is special
Levy and be, the bottom of the upper base (3) is provided with targeting port (33), and targeting port (33) is in horn-like, and end face is larger
One end is arranged on the bottom surface of base (3), and the less one end of end face is identical with guide pipe clear size of opening and with being oriented to pipe through-hole
Termination forms and is smoothly connected.
6. the mounting and dismounting method of portion connecting structure on a kind of quick removable fuel assembly, it is characterised in that including assembling process and
Unloading process, wherein assembling process are：
(1) guide section first by connection sleeve pipe (2) along upper base (3) is inserted into the guiding pipe through-hole of upper base (3), is made
Obtaining the annular bulging of connection sleeve pipe (2) can be engaged with the annular expansion groove of upper base；
(2) secondly, in the guiding pipe through-hole that locking tube (1) is inserted into upper base (3) from top to bottom so that locking tube (1)
Annular bulging can expand groove with the annular of upper base (3) and be engaged, meanwhile, locking tube (1) is by the elastic shirt rim of connection sleeve pipe (2)
Strut outward so that the annular bulging of connection sleeve pipe (2) and the annular of upper base (3) expand groove and be closely fit with；
Unloading process：Instrument is passed through into locking tube (1) and radial dilatation is to bite the base of locking tube (1), applies one upwards
Axial force, make after locking tube (1) local deformation to pull out from connection sleeve pipe (2), by re-replacing locking tube (1),
The reparation of fuel assembly can just be completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106929.6A CN107068208A (en) | 2017-02-27 | 2017-02-27 | Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106929.6A CN107068208A (en) | 2017-02-27 | 2017-02-27 | Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107068208A true CN107068208A (en) | 2017-08-18 |
Family
ID=59621346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710106929.6A Pending CN107068208A (en) | 2017-02-27 | 2017-02-27 | Portion connecting structure and its mounting and dismounting method on a kind of quick removable fuel assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN107068208A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935360A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of fuel assembly guide pipe and upper tube socket connection structure and fuel assembly skeleton |
| CN112820423A (en) * | 2019-11-18 | 2021-05-18 | 中核建中核燃料元件有限公司 | Can dismantle stand pipe assembly and simulation skeleton at expanded joint position |
| CN115691849A (en) * | 2022-09-27 | 2023-02-03 | 四川大学 | Thread simplified type quick detachable connection device and method |
| CN116580859A (en) * | 2023-06-13 | 2023-08-11 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
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| CN86102031A (en) * | 1985-03-29 | 1986-11-12 | 西屋电气公司 | In reconstitutable fuel assembly by guide thimble captured locking pipe |
| CN86103992A (en) * | 1985-06-12 | 1986-12-17 | 西屋电气公司 | The last base of nuclear fuel assembly is connected double lock joint on the guide thimble |
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| CN101882474A (en) * | 2010-05-12 | 2010-11-10 | 高新区益腾净水设备研发中心 | Rapid detachable joint |
| CN203070779U (en) * | 2013-01-14 | 2013-07-17 | 上海核工程研究设计院 | Rotary detachable guide pipe-upper pipe seat connecting piece |
| CN103928059A (en) * | 2013-01-14 | 2014-07-16 | 上海核工程研究设计院 | Rotary detachable guide pipe-upper pipe seat connecting piece |
| CN104575629A (en) * | 2014-12-05 | 2015-04-29 | 上海核工程研究设计院 | Detachable upper pipe seat and guide pipe connecting structure |
| CN104575629B (en) * | 2014-12-05 | 2017-05-31 | 上海核工程研究设计院 | A kind of attachment structure of removable upper base and guide pipe |
| CN104538065A (en) * | 2014-12-19 | 2015-04-22 | 上海核工程研究设计院 | Connecting structure of limit type upper tube seat and guide tube |
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| CN109935360A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of fuel assembly guide pipe and upper tube socket connection structure and fuel assembly skeleton |
| CN112820423A (en) * | 2019-11-18 | 2021-05-18 | 中核建中核燃料元件有限公司 | Can dismantle stand pipe assembly and simulation skeleton at expanded joint position |
| CN115691849A (en) * | 2022-09-27 | 2023-02-03 | 四川大学 | Thread simplified type quick detachable connection device and method |
| CN115691849B (en) * | 2022-09-27 | 2023-07-21 | 四川大学 | Screw thread simplified type quick detachable connection device and method |
| US11828324B1 (en) | 2022-09-27 | 2023-11-28 | Sichuan University | Quick-detachable connecting device with simplified thread structure and connection method using same |
| CN116580859A (en) * | 2023-06-13 | 2023-08-11 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
| CN116580859B (en) * | 2023-06-13 | 2024-03-05 | 四川大学 | Quick detachable connection structure and method for separated fuel assembly |
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Application publication date: 20170818 |