CN208000752U - A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew - Google Patents
A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew Download PDFInfo
- Publication number
- CN208000752U CN208000752U CN201721862166.XU CN201721862166U CN208000752U CN 208000752 U CN208000752 U CN 208000752U CN 201721862166 U CN201721862166 U CN 201721862166U CN 208000752 U CN208000752 U CN 208000752U
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- Prior art keywords
- claw
- srew
- core bar
- telescope
- fuel component
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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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Abstract
The utility model is related to fuel assembly recovery technique fields, specifically disclose a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew.A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew, the tool includes claw opening and closing regulating mechanism, core bar, extension bar and dismounting head, wherein, core bar is sleeved on inside extension bar and constitutes the inside and outside double-deck club shaped structure, it is equipped with dismounting head in the end of extension bar, it is equipped with claw opening and closing regulating mechanism on core bar top, core bar is rotated by claw opening and closing regulating mechanism, to control dismounting head upper clipping claw opening and closing.The tool can remote-controlled operation realization upper pipe seat of fuel component telescope-srew is removed and is installed under water;Meanwhile undesirably falling off for dismounting or installation process middle sleeve screw is can effectively avoid, telescope-srew can be removed after removing with tool, until tool can discharge telescope-srew behind safety zone or position.
Description
Technical field
The invention belongs to fuel assembly recovery technique fields, and in particular to a kind of upper pipe seat of fuel component telescope-srew is underwater
Dismantling device.
Background technology
Fuel assembly is influenced during running use by various factors such as water impact, vibration, irradiation, is existed certain
Breakage rate.If breakage occurs in fuel rod, fission product can be caused to leak, cause primary Ioops radioactive level to increase, influence core
The economy in power station and safety.Therefore, it is necessary to implement to repair to the damaged fuel assembly for being not up to burn-up level, replace broken
The fuel rod of damage ensures reactor safety, reliably runs.
When implementing single rod Replacement and Repair to fuel assembly, need to remove upper pipe seat of fuel component, upper pipe seat of fuel component is
It is mounted on fuel assembly by telescope-srew, therefore particular tool need to be used to dismount upper pipe seat of fuel component;Due to fuel stack
Part has stronger radiation, and usually using water as shielded layer, general provision fuel assembly must keep 3 meters of safety with the water surface
Distance, therefore the dismantling device should also meet and carry out remote-operated requirement under water, in addition, telescope-srew cannot be fallen into after removing
Pond becomes foreign matter, therefore the dismantling device should also have the function that transfer is realized to telescope-srew, not permit in transfer process
Perhaps upper base sleeve cylinder screw is fallen.
Invention content
The purpose of the present invention is to provide a kind of underwater dismantling devices of upper pipe seat of fuel component telescope-srew, may be implemented
Upper pipe seat of fuel component telescope-srew is dismounted and transported under water.
Technical scheme is as follows:A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew, the kit
Include claw opening and closing regulating mechanism, core bar, extension bar and dismounting head, wherein core bar is sleeved on inside extension bar and constitutes inside and outside double
Layer club shaped structure is equipped with dismounting head in the end of extension bar, is equipped with claw opening and closing regulating mechanism on core bar top, passes through claw
It closes regulating mechanism and rotates core bar, to control dismounting head upper clipping claw opening and closing.
The claw opening and closing regulating mechanism includes compressed spring, adjusting block and fixed seat, wherein core bar top passes through
Fixed seat and adjusting block, and compressed adjusting block and fixed seat using compressed spring, the rectangular knot of adjusting block and core bar upper end
Structure matches, and by rotating adjusting block, core bar can be driven to rotate a certain angle, realize and dismount head upper clipping claw opening and closing to core bar lower end
Control.
Positioning pin is additionally provided on the adjusting block, the positioning pin stretches out part and the fixed seat of adjusting block lower face
90 ° of two dowel holes in upper interval match, by lift and rotate adjusting block, it can be achieved that positioning pin in fixed seat two
It is positioned in a dowel hole, to the restriction to adjusting block rotation angle.
The dismounting head includes guide rod and claw, wherein has one section of fixture block structure, the card on guide rod outer wall
Block structure is the strip projected parts structure being uniformly distributed circumferentially, the hollow hole with upper base sleeve cylinder screw that is to be installed or removing
Structure matches;Claw, guide rod and catch jacket are cased in guide rod in the end of core bar lower end, and by screw by guide rod,
Claw is fixedly connected with extension bar;It is equipped with projection portion on the claw below guide rod fixture block structure, is located at claw projection portion
Core bar section be ellipsoidal structure, oval tip and the flat part point of core bar bottom can be made by claw opening and closing regulating mechanism
It is not contacted with claw projection portion, to make claw sentence the state of opening and closing and retraction respectively.
Three or four strip bulge structures are circumferentially evenly distributed in fixture block structure on the guide rod, it can be with
It is adapted to the upper base sleeve cylinder screw of three card slots or four card slots.
The extension bar is equipped with hanging ring, and the hanging ring is fixedly connected by lifting bolt with extension bar.
The remarkable result of the present invention is:A kind of upper pipe seat of fuel component telescope-srew of the present invention dismounts work under water
Tool, can remote-controlled operation realization upper pipe seat of fuel component telescope-srew is removed and is installed under water;Meanwhile it can effectively keep away
To exempt from dismounting or installation process middle sleeve screw is undesirably fallen off, telescope-srew can be removed after removing with tool, until safety
Tool can discharge telescope-srew behind region or position;It is removable structure that head is dismounted in dismantling device of the present invention,
Replaceable different size is respectively used to the upper base sleeve cylinder screw that dismounting upper end is three card slots and four card slots.
Description of the drawings
Fig. 1 is a kind of underwater dismantling device structural schematic diagram of upper pipe seat of fuel component telescope-srew of the present invention;
Fig. 2 is the structural schematic diagram of claw opening and closing regulating mechanism in Fig. 1;
Fig. 3 is the structural schematic diagram of fixed seat in Fig. 2;
Fig. 4 is the structural schematic diagram that head is dismounted in Fig. 1;
Fig. 5 is that head Section A-A figure is dismounted in Fig. 4;
Fig. 6 is that head section B-B figure is dismounted in Fig. 4;
In figure:1, hanging ring;2, claw opening and closing regulating mechanism;3, lifting bolt;4, core bar;5, extension bar;6, head is dismounted;7,
Compressed spring;8, positioning pin;9, adjusting block;10, fixed seat;11, screw;12, guide rod;13, upper base sleeve cylinder screw;14, block
Pawl.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment invention is further described in detail.
As shown in Figures 1 to 3, a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew, including claw opening and closing are adjusted
Mechanism 2, core bar 4, extension bar 5 and dismounting head 6, wherein hanging ring 1 is fixedly connected by lifting bolt 3 with extension bar 5, core bar 4
It is sleeved on 5 inside of extension bar and inside and outside two layers of club shaped structure is collectively formed, dismounting head 6 is installed in the end of extension bar 5, passes through rotation
Core bar 4 can control 14 opening and closing of claw on dismounting head 6;Claw opening and closing regulating mechanism 2 is installed on 4 top of core bar, wherein
Claw opening and closing regulating mechanism 2 includes compressed spring 7, positioning pin 8, adjusting block 9 and fixed seat 10, and 4 top of core bar, which passes through, to be fixed
Seat 10 and adjusting block 9, and compressed adjusting block 9 and fixed seat 10 using compressed spring 7, the side of adjusting block 9 and 4 upper end of core bar
Shape structure matching is equipped with positioning pin 8 on adjusting block 9, between stretching out on the part and fixed seat 10 of 9 lower face of adjusting block
Match every 90 ° of two dowel holes, by lifting and rotating adjusting block 9, so that positioning pin 8 is located in another in fixed seat 10
In one dowel hole, to drive core bar 4 to rotate fixed angle, realize to 4 lower end of core bar, 6 upper clipping claw of dismounting head, 14 opening and closing
Control;
As described in Fig. 4~6, dismounting head 6 includes screw 11, guide rod 12 and claw 14, wherein guide rod 12 is with one section
The cylindrical structure of fixture block is uniformly distributed circumferentially three or four strip bulge structures in fixture block structure, and to be installed
Or the hollow bore configuration for the upper base sleeve cylinder screw 13 removed matches, and can be adapted to the upper tube socket that upper end is three card slots or four card slots
Telescope-srew;Claw 14 is cased with inside guide rod 12, guide rod 12 and claw 14 are sleeved on the end of 4 lower end of core bar, and pass through spiral shell
Nail 11 is fixedly connected with extension bar 5, wherein 4 section of core bar for being located at 14 projection portion of claw is ellipsoidal structure, passes through claw
Opening and closing regulating mechanism 2 can be such that the oval tip of core bar bottom and flat part is contacted respectively with 14 projection portion of claw, to make
Claw 14 sentences the state of opening and closing and retraction respectively;When claw 14 opens, the bottom of base sleeve cylinder screw 13 can be clamped,
When claw 14 bounces back, base sleeve cylinder screw 13 can be discharged;
A kind of specific work process of underwater dismantling device of upper pipe seat of fuel component telescope-srew of the present invention is:When
When hand-held adjusting block 9 is lifted up, compressed spring 7 is in impaction state, and rotation adjusting block 9 makes 8 alignment and fixation seat 10 of positioning pin
Dowel hole position, discharge adjusting block 9 after compressed spring 7 effect under positioning pin 8 just fall into 10 dowel hole position of fixed seat,
Above-mentioned action is repeated, positioning pin 8 can be inserted into another pin hole of fixed seat 10, core bar 4 is with adjusting in the process
The rotation of block 9 and rotate, i.e., when positioning pin 8 is located at different pin holes, the bottom elliptical shape of core bar 4 respectively distinguishes claw 14
In the state opened and bounced back.
Upper pipe seat of fuel component telescope-srew demolishing process:The device is moved on to above upper pipe seat of fuel component, dismounting is made
The first upper base sleeve cylinder screw to be removed of 6 alignment, slow lower section device are simultaneously inserted into base sleeve cylinder screw and make guide rod
12 fixture block is fallen into the notch of base sleeve cylinder screw, is rotated the device counterclockwise and is unscrewed upper base sleeve cylinder screw about
4 circles, the rear claw opening and closing regulating mechanism 2 that adjusts make claw 14 open, just clamp base sleeve cylinder screw at this time, continue counterclockwise
Rotate the device until upper base sleeve cylinder screw is removed from upper tube socket, shift the device at this time, upper base sleeve cylinder screw just with
It is removed with the device, being transferred into after home can releasing sleeve screw by the closing of claw 14;
Upper pipe seat of fuel component telescope-srew installation process:Capture telescope-srew after open claw 14, by the device together with
Telescope-srew is transferred to above tube socket, and the screw hole in alignment on tube socket slowly falls the device, rotates clockwise the dress
It sets and telescope-srew is screwed into about 4 circles, adjusting claw opening and closing regulating mechanism 2 makes claw 14 be closed, and then continues to rotate clockwise this
Until can not continue to rotate, telescope-srew is just mounted on upper tube socket device at this time, is promoted the device afterwards and is removed.
Claims (6)
1. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew, it is characterised in that:The tool includes claw opening and closing tune
Save mechanism (2), core bar (4), extension bar (5) and dismounting head (6), wherein core bar (4) is sleeved on extension bar (5) inside and constitutes
Inside and outside bilayer club shaped structure is equipped with dismounting head (6) in the end of extension bar (5), is adjusted equipped with claw opening and closing on core bar (4) top
Mechanism (2) rotates core bar (4) by claw opening and closing regulating mechanism (2), to control dismounting head (6) upper clipping claw (14) opening and closing.
2. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew according to claim 1, it is characterised in that:Institute
The claw opening and closing regulating mechanism (2) stated includes compressed spring (7), adjusting block (9) and fixed seat (10), wherein core bar (4) pushes up
End is compressed adjusting block (9) and fixed seat (10) across fixed seat (10) and adjusting block (9), and using compressed spring (7), is adjusted
Locking nub (9) is matched with the square structure of core bar (4) upper end, by rotating adjusting block (9), core bar (4) can be driven to rotate centainly
Angle realizes the control that head (6) upper clipping claw (14) opening and closing are dismounted to core bar (4) lower end.
3. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew according to claim 2, it is characterised in that:Institute
Positioning pin (8) is additionally provided on the adjusting block (9) stated, the positioning pin (8) stretches out the part and fixation of adjusting block (9) lower face
Two dowel holes at 90 ° of interval match on seat (10), by lifting and rotating adjusting block (9), it can be achieved that positioning pin (8) exists
It is positioned in two dowel holes in fixed seat (10), to the restriction to adjusting block (9) rotation angle.
4. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew according to claim 1, it is characterised in that:Institute
The dismounting head (6) stated includes guide rod (12) and claw (14), wherein has one section of fixture block structure, institute on guide rod (12) outer wall
The fixture block structure stated is the strip projected parts structure being uniformly distributed circumferentially, with upper base sleeve cylinder screw that is to be installed or removing
(13) hollow bore configuration matches;It is cased with claw (14) in guide rod (12), guide rod (12) and claw (14) are sleeved on core bar
(4) end of lower end, and be fixedly connected with guide rod (12), claw (14) with extension bar (5) by screw (11);In guide rod (12)
Claw (14) below fixture block structure is equipped with projection portion, and core bar (4) section for being located at claw (14) projection portion is ellipse
Shape structure, by claw opening and closing regulating mechanism (2) can make core bar bottom oval tip and flat part respectively with claw (14)
Projection portion contacts, to make claw (14) sentence the state of opening and closing and retraction respectively.
5. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew according to claim 4, it is characterised in that:Institute
It is circumferentially evenly distributed with three or four strip bulge structures in the fixture block structure on guide rod (12) stated, is adapted to three card slots
Or four card slot upper base sleeve cylinder screw (13).
6. a kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew according to claim 1, it is characterised in that:Institute
The extension bar (5) stated is equipped with hanging ring (1), and the hanging ring (1) is fixedly connected by lifting bolt (3) with extension bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862166.XU CN208000752U (en) | 2017-12-27 | 2017-12-27 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862166.XU CN208000752U (en) | 2017-12-27 | 2017-12-27 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208000752U true CN208000752U (en) | 2018-10-23 |
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ID=63835413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721862166.XU Active CN208000752U (en) | 2017-12-27 | 2017-12-27 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
Country Status (1)
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| CN (1) | CN208000752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979632A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
-
2017
- 2017-12-27 CN CN201721862166.XU patent/CN208000752U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979632A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of underwater dismantling device of upper pipe seat of fuel component telescope-srew |
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