CN101543987B - Tool for taking and placing sleeve of spent fuel assembly inclined conveyor - Google Patents
Tool for taking and placing sleeve of spent fuel assembly inclined conveyor Download PDFInfo
- Publication number
- CN101543987B CN101543987B CN200910130944XA CN200910130944A CN101543987B CN 101543987 B CN101543987 B CN 101543987B CN 200910130944X A CN200910130944X A CN 200910130944XA CN 200910130944 A CN200910130944 A CN 200910130944A CN 101543987 B CN101543987 B CN 101543987B
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- China
- Prior art keywords
- sleeve
- pipe
- fuel assembly
- spent fuel
- steel ball
- 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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- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000000725 suspension Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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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- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a tool for taking and placing a sleeve of a spent fuel assembly inclined conveyor, which comprises a lifting ring connected with a lifting lug through a pin shaft, a barrel body and a flange fixed on the lifting lug, one end of a pipe fixedly connected with the lifting lug, the other end of the pipe connected with a sleeve, a core rod positioned in the pipe, the upper end of the core rod in threaded connection with a nut, the lower end of the core rod in connected with a pull rod, the pull rod in the sleeve, the sleeve provided with a slotted hole for containing a steel ball, the steel ball in the slotted hole, and the slotted hole near the outer surface being. The device has simple structure, convenient operation, safety and reliability.
Description
Technical field
The present invention relates to the reactor engineering technical field, particularly a kind of dismantling device that is used for slant conveyor sleeve for spent fuel assembly.
Background technology
In reactor, many operating process to irradiated fuel assembly are arranged, the majority operation environment has the radioactivity of asking, when it is changed, do not allow operating personnel approaching, this must use special-purpose gripping apparatus to finish, at present, it is reported that in inaccessible environment of people or position placing or take out the tubular parts needs special-purpose instrument, the design of this type of instrument is divided into following two kinds:
(1) inner expansion chuck structure
This structure is by moving pull bar extruding elastomer, elastomer produce distortion and with the sleeve pipe swelling, frictionally takes out sleeve, on the contrary for placing.The device of this structure comes work by the frictional force that the extruding elastomer produces, and is running under vibration or the case of collision, and operated sleeve pipe has the danger of falling.Elastomer is also easily aging simultaneously, and elasticity can reduce or lose, and will have influence on the life-span of instrument.
(2) catch the formula structure from the outside
This structure is to adopt the outside method of catching, and adopts gripping apparatus directly to catch the top of assembly, and the reliability of this structure operation is greatly improved.But owing to the mode that adopts outside extracting, so the sleeve top needs enough spaces to hold gripping apparatus with periphery.
Summary of the invention
The present invention has overcome deficiency of the prior art, and a kind of simple in structure, good reliability, the easy to operate fetching tool that is applicable to the tubular structure assembly are provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of fetching tool of slant conveyor sleeve for spent fuel assembly, this device comprises that suspension ring are connected with hanger by bearing pin, cylindrical shell and flange are fixed on the hanger, and an end of pipe is fixedlyed connected with hanger, the other end joint sleeve of pipe, core bar is positioned at pipe, its the upper end with nut by being threaded, the lower end is connected with pull bar, pull bar places in the sleeve pipe, sleeve pipe is established the slotted eye that holds steel ball, and steel ball places slotted eye.
Pull bar comes off from slotted eye or takes off into sleeve inner in order better to prevent steel ball topmost or bottom the time, and the present invention is all right:
Slotted eye is being the conical surface or sphere near outer surface.Scale is carved with in described core bar upper end, is used to show the position of pull bar.Described pull bar is provided with projection, and groove is set in the sleeve pipe, and the degree of depth of groove arrival slotted eye place, and is lower than the center line of slotted eye on short transverse.On the described pull bar keyway is set, is provided with and the supporting slotted hole of keyway on the sleeve.Described slotted eye is circumferentially uniform on sleeve pipe.Described steel ball number is more than or equal to 3.Described core bar is connected by pin with pull bar.Pipe adopts with sleeve pipe and is threaded.
Compared with prior art, the invention has the beneficial effects as follows: this device reaches and grasps and the pulling off sleeves purpose by cooperating between sleeve, pull bar, the steel ball, and this apparatus structure is simple, easy to operate, safe and reliable.
Description of drawings
The structure cutaway view of this device of Fig. 1
Fig. 2 is the A-A cutaway view as shown in Figure 1
Fig. 3 is the B-B cutaway view as shown in Figure 1
Fig. 4 tube-in-tube structure schematic diagram
Fig. 5 Tiebar structure schematic diagram
The structural representation of Fig. 6 steel ball in sleeve pipe
Fig. 7 steel ball protrudes the structural representation of sleeve pipe
1 core bar, 2 pipes, 3 pins, 4 pull bars, 5 steel balls, 6 sleeve pipes, 7 suspension ring, 8 nuts, 9 screws, 10 bearing pins, 11 hangers, 12 flanges, 13 screw rods, 14 cylindrical shells, 15 sleeves, 16 keys, 17 screws, 18 slotted eyes, 19 grooves, 20 slotted holes, 21 run through groove, 22 keyways
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
This device mainly comprises suspension ring 7, hanger 11, nut 8, core bar 1, pipe 2, pull bar 4, steel ball 5 and sleeve pipe 6.Structure as shown in Figure 1, suspension ring 7 are fixed on the hanger 11 by bearing pin 10, cylindrical shell 14 and flange 12 are fixed on the hanger 11 by screw 9, screw rod 13 fuses with mode and the cylindrical shell 14 that is threaded, nut 8 is connected with core bar 1 in the mode that is threaded, and scale is carved with on the top of core bar 1, is used for representing accurately the position of pull bar 4, flange 12 is pushed down nut 8 and is limited nut 8 to top offset, and nut 8 downward displacements are limited by screw rod 13.Hanger 11 and the mode of managing between 2 with welding link into an integrated entity.Sleeve pipe 6 links together with mode and the pipe 2 that is threaded, and pull bar is connected with core bar 1 by pin 3.The load of sleeve 15 for picking and placeing.The steel ball 5 of present embodiment adopts four, and circumferentially uniform, and keyway 22 adopts two, also symmetric arrangement.
As shown in Figure 2, establish the slotted eye 18 that holds steel ball 5 on the sleeve pipe 6, steel ball 5 places slotted eye 18, and slotted eye 18 is being the conical surface or sphere near outer surface.Described slotted eye 18 is circumferentially uniform on sleeve pipe 6.
When sleeve 15 is pressed on the steel ball 5, because steel ball 5 is circumferentially uniform on sleeve pipe 6, the radial load that steel ball 5 passes to pull bar 4 cancels each other out, simultaneously because steel ball 5 and contacting of pull bar 4 are contacting of the sphere and the face of cylinder, so the active force of steel ball 5 pairs of pull bars 4 is only in radial direction, pull bar 4 is not subjected to the downward active force of steel ball 5.The gravity of sleeve 15 is finally born by sleeve pipe 6 by steel ball 5.
Shown in Fig. 3～5, keyway 22 is set on the pull bar 4, open the slotted hole 20 of symmetric arrangement on the sleeve pipe 6, to hold key 16, key 16 is fixed in the keyway 22 on the pull bar 4 by screw 17, the slotted hole 20 of sleeve pipe 6 limits the scope that pull bar 4 moves up and down by key 16, limits the rotation of pull bar along its axis simultaneously.The degree of depth of the groove 19 of sleeve pipe 6 inside arrives four steel ball slotted eye 18 places, and is lower than the center line of steel ball slotted eye 18, groove 19 and slotted eye 18 is run through form to run through groove 21, and four projectioies of pull bar 4 can enter and run through in the groove 21.Run through groove 21 correspondences in four projectioies on the pull bar 4 and the sleeve pipe 6, during work, the projection of pull bar 4 is by in the slotted eye 18 that runs through groove 21 and penetrate steel ball 5, and then promotes four steel balls 5, and steel ball 5 is extruded.Two keyway 22 symmetric arrangement of pull bar 4.
The operation principle of this device is as follows:
When needs take out sleeve 15, the position that twisting nut 8 improves core bar 1, drive lower link 4 at core bar 1 moves up, extremely as shown in Figure 7, the projection of pull bar 4 enters the slotted eye 18 that holds steel ball by running through groove 21, steel ball 5 is extruded, because slotted eye 18 is being the conical surface or sphere near outer surface on the sleeve pipe 6, steel ball 5 can not deviate from sleeve pipe 6.This moment, steel ball 5 protruded the outer surface of sleeve pipe 6, the gravity of sleeve 15 is passed to pull bar 4 by steel ball 5, because steel ball 5 is circumferentially uniform, the radial load of pull bar 4 cancels each other out, the gravity of sleeve 15 is finally born by sleeve pipe 6, so just sleeve 15 can be taken out from placement location.
When needs were placed sleeve 15, twisting nut 8 reduced pull bar 4 positions, and at this moment the projection on the pull bar 4 moves to outside the slotted eye 18, and steel ball 5 moves in the sleeve pipe 6 under sleeve 15 effects, and steel ball 5 no longer applies power to sleeve 15, state as shown in Figure 6.This device just can be extracted out from the center hole of sleeve 15, and sleeve 15 is placed in the assigned position place.
Claims (8)
1. the fetching tool of a slant conveyor sleeve for spent fuel assembly, it is characterized in that, this device comprises suspension ring (7), hanger (11), flange (12), pipe (2), sleeve pipe (6), core bar (1), steel ball (5), suspension ring (7) are connected with hanger (11) by bearing pin (10), cylindrical shell (14) and flange (12) are fixed on the hanger (7), one end of pipe (2) is fixedlyed connected with hanger (11), the other end joint sleeve (6) of pipe (2), core bar (1) is positioned at pipe (2), core bar (1) upper end is threaded with nut (8), the lower end is connected with pull bar (4), pull bar (4) places in the sleeve pipe (6), sleeve pipe (6) is established the slotted eye (18) that holds steel ball (5), steel ball (5) places slotted eye (18), and described pull bar (4) is provided with projection, and groove (19) is set in the sleeve pipe (6), groove (19) and slotted eye (18) run through to form and run through groove (21), the projection on the pull bar (4) and run through groove (21) correspondence.
2. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, slotted eye (18) is being the conical surface or sphere near outer surface.
3. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, scale is carved with in described core bar (1) upper end.
4. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1, it is characterized in that, described pull bar (4) is provided with projection, groove (19) is set in the sleeve pipe (6), and the degree of depth of groove (19) arrives slotted eye (18) and locates, and be lower than slotted eye on the short transverse center line of (18).
5. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, described slotted eye (18) is circumferentially uniform on sleeve pipe (6).
6. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, described steel ball (5) quantity is more than or equal to 3.
7. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, described core bar (1) is connected by pin (3) with pull bar (4).
8. the fetching tool of slant conveyor sleeve for spent fuel assembly according to claim 1 is characterized in that, pipe (2) adopts with sleeve pipe (6) and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130944XA CN101543987B (en) | 2009-04-21 | 2009-04-21 | Tool for taking and placing sleeve of spent fuel assembly inclined conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130944XA CN101543987B (en) | 2009-04-21 | 2009-04-21 | Tool for taking and placing sleeve of spent fuel assembly inclined conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101543987A CN101543987A (en) | 2009-09-30 |
| CN101543987B true CN101543987B (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910130944XA Active CN101543987B (en) | 2009-04-21 | 2009-04-21 | Tool for taking and placing sleeve of spent fuel assembly inclined conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101543987B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117668B (en) * | 2009-12-31 | 2014-08-27 | 中国核动力研究设计院 | Reactor core unloading tool |
| CN101850545B (en) * | 2010-03-15 | 2012-05-23 | 中国原子能科学研究院 | Manipulator for disassembling and assembling lifting bucket of fast reactor loading and unloading material hoister |
| CN103612240A (en) * | 2013-10-30 | 2014-03-05 | 合保电气（芜湖）有限公司 | Tool for replacing bolt shock absorber |
| CN111043170B (en) * | 2019-12-31 | 2021-05-25 | 龙岩烟草工业有限责任公司 | Rolling bearing dismounting tool |
| CN113782240B (en) * | 2021-08-11 | 2024-02-20 | 中国原子能科学研究院 | A reloading instrument for control stick mobile body |
-
2009
- 2009-04-21 CN CN200910130944XA patent/CN101543987B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101543987A (en) | 2009-09-30 |
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