CN103862093B - Guiding casing pipe underwater aqueous medium hydraulic shearing device - Google Patents
Guiding casing pipe underwater aqueous medium hydraulic shearing device Download PDFInfo
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- CN103862093B CN103862093B CN201210551198.3A CN201210551198A CN103862093B CN 103862093 B CN103862093 B CN 103862093B CN 201210551198 A CN201210551198 A CN 201210551198A CN 103862093 B CN103862093 B CN 103862093B
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Abstract
The invention belongs to the technical field of reactor pressure vessel maintenance, and particularly relates to a guiding casing pipe underwater aqueous medium hydraulic shearing device. The guiding casing pipe underwater aqueous medium hydraulic shearing device comprises a box body, a shearing cylinder and shearing blades, wherein the shearing cylinder is positioned inside the box body, the shearing blades comprise a fixed blade and a moving blade, the fixed blade is arranged at the inner side of the front end of the shearing cylinder, and the moving blade is arranged at the front end of a piston of the shearing cylinder. Shearing work of a waste guiding casing pipe activating section can be reliably realized, so that the waste finger casing pipe activating section can be conveniently stored in a closed container, and the safety of a power plant is ensured.
Description
Technical field
The invention belongs to reactor pressure vessel maintenance technique field, and in particular to a kind of finger sleeve aqueous medium hydraulic pressure under water
Shear.
Background technology
Finger sleeve is to provide guiding and passage for the removable reactor core detector of reactor core neutron flux measurement system.For measuring
The Flux Distribution of neutron in reactor core, is easy to obtain accurate Flux Distribution on all fuel assemblies and each fuel stack height
Figure, the damage of any of which root finger sleeve will all affect the accurate measurement of neutron flux.Finger sleeve starts from control room's seal section, Jing
Guide pipe, through pressure vessel bottom, core support plate and lower Turbogrid plates incoming fuel component top always, total length 13-16m.
Finger sleeve directly touches cooling agent between lower Turbogrid plates and fuel assembly bottom in about 18.4 ~ 34.8mm length, this
The changes in flow rate at place and the vibration of fluid induced refer to the main cause of casing wear.The breakage of finger sleeve can cause primary Ioops cold
But the leakage and pollution of agent.Because its present position is special, its abrasion even crack conditions happens occasionally, and USA Nuclear Power Plants were once sent out
Situation of 20 wall thickness reductions more than 60% was given birth in 58 finger sleeves, the change of pressure vessel bottom coolant flow and fluid are lured
The vibration sent out refers to the main cause of casing wear.Qinshan power station once caused fingerstall in 1999 because hanging basket failure, guide pipe are damaged
Manage and occur in succession blocking, leakage, rupture and change.The thinning leakage of finger sleeve, can make the personnel near isolating valve there is irradiation
It is dangerous.
When pipe thickness it is thinning when 65%, foreign matters from being blocked, fracture, leakage, accidental damage, it is necessary to change finger sleeve.
The discarded finger sleeve that reactor pressure vessel is changed requires to shear activation section using scissors, is easy in closing
Container is stored, it is ensured that the safety of power plant.
The content of the invention
The technical problem to be solved in the invention is：A kind of finger sleeve aqueous medium hydraulic cutting device under water is provided, can
The reliable shearing work for realizing discarded finger sleeve activation section.
Technical scheme is as described below：
Finger sleeve aqueous medium hydraulic cutting device under water, including casing, shear cylinder and shear-blade；Shear cylinder is located at casing
Inside, shear-blade includes fixed blade and movable blades, and fixed blade is installed on shear cylinder leading inside, and movable blades are installed
In shear cylinder piston nose.
The casing includes from top to bottom：Taper guide cylinder, shearing case and square fairlead, three links into an integrated entity, and bores
Shape guide cylinder play the guiding role to the finger sleeve being put in it, is easy to finger sleeve vertically to enter shearing case, square guiding
Discarded finger sleeve upper vessel portion is set in, the finger sleeve that shearing case is sheared is fallen in discarded fingerstall tubular container.
Shear cylinder is installed inside the shearing case；Shear cylinder includes piston, oil cylinder and back-moving spring therebetween；It is living
Plug is arranged inside oil cylinder, and oil cylinder is provided with oil cylinder cover at shear cylinder rear portion, and oil cylinder is covered with through hole, outside aqueous medium Jing oil cylinders
Lid through hole is entered inside oil cylinder, promotes piston and the movable blades on piston to move to the fixed blade of shear cylinder front end, the two
Interact and cut off the finger sleeve for entering shearing case；After aqueous medium release, back-moving spring promotes piston and the work on piston
Cutting blade is to away from fixed insert orientation movement, i.e. piston reset.
Preferably, the sealing of piston and oil cylinder free gap is realized using sealing ring.
Used as further preferred version, the square fairlead, top is in square, and case is sheared in connection；Bottom be in
Square table guide plate.
Beneficial effects of the present invention are：
The finger sleeve aqueous medium hydraulic cutting device under water of the present invention, can reliably realize cutting for discarded finger sleeve activation section
Cut is made, and makes discarded finger sleeve activation section be easy to be stored in closed vessel, it is ensured that the safety of power plant.
Description of the drawings
Fig. 1 is finger sleeve of the invention aqueous medium hydraulic cutting device structural representation under water.
In figure, the discarded fingerstall tubular containers of 1-, 2- fixes blade, and 3- taper guide cylinders, 4- finger sleeves, 5- shear cylinders, 6- lives
Cutting blade, 7- shearing casees.
Specific embodiment
With reference to the accompanying drawings and examples to finger sleeve of the invention, under water aqueous medium hydraulic cutting device is carried out specifically
It is bright.
The finger sleeve aqueous medium hydraulic cutting device under water of the present invention, including：Casing, shear cylinder 5 and shear-blade.Shearing
Cylinder 5 is located at box house, and shear-blade includes fixed blade 2 and movable blades 6, and fixed blade 2 is installed in the front end of shear cylinder 5
Side, movable blades 6 are installed on the piston nose of shear cylinder 5.
The casing includes from top to bottom：Taper guide cylinder 3, shearing case 7 and square fairlead, three links into an integrated entity.
Taper guide cylinder 3 is in infundibulate, and the finger sleeve 4 to being put in it play the guiding role, and is easy to finger sleeve 4 along vertical side
Case 7 is sheared to entering.
Shear cylinder 5 is installed inside shearing case 7.Shear cylinder 5 includes piston, oil cylinder and back-moving spring therebetween.It is living
Plug is arranged inside oil cylinder, and oil cylinder is provided with oil cylinder cover at the rear portion of shear cylinder 5, and oil cylinder is covered with through hole, and outside aqueous medium Jing is oily
Cylinder cap through hole is entered inside oil cylinder, promotes piston and the movable blades 6 on piston to move to fixed blade 2, two-way interaction
The finger sleeve 4 for entering shearing case 7 is cut off.After aqueous medium release, back-moving spring promotes piston and the movable blades on piston
6 to away from the fixed direction of blade 2 movement, i.e. piston reset.
Square fairlead is set in the discarded top of fingerstall tubular container 1.
Preferably, the sealing of piston and oil cylinder free gap is realized using sealing ring.
Square fairlead, top is in square, and case 7 is sheared in connection；Bottom is, in square table guide plate, to be easy to the present invention's
Under water aqueous medium hydraulic cutting device is set in the discarded top of fingerstall tubular container 1 to finger sleeve.
Claims (3)
1. finger sleeve aqueous medium hydraulic cutting device under water, including casing, shear cylinder (5) and shear-blade, it is characterised in that：Cut
Cylinder (5) is cut positioned at box house, shear-blade includes fixed blade (2) and movable blades (6), fixed blade (2) is installed on cuts
Cylinder (5) leading inside is cut, movable blades (6) are installed on shear cylinder (5) piston nose；The casing includes from top to bottom：Taper
Guide cylinder (3), shearing case (7) and square fairlead, three links into an integrated entity, and taper guide cylinder (3) is to the fingerstall that is put in it
Pipe (4) play the guiding role, and is easy to finger sleeve (4) vertically to enter shearing case (7), and square fairlead is set in discarded fingerstall
Tubular container (1) top, makes the finger sleeve (4) that shearing case (7) is sheared fall in discarded fingerstall tubular container (1)；Shearing case (7)
Inside is provided with shear cylinder (5)；Shear cylinder (5) includes piston, oil cylinder and back-moving spring therebetween；Piston is arranged at oil cylinder
Inside, oil cylinder is provided with oil cylinder cover at shear cylinder (5) rear portion, and oil cylinder is covered with through hole, and outside aqueous medium Jing oil cylinder cover through holes enter
Enter inside oil cylinder, promote piston and the movable blades (6) on piston mobile to the fixed blade (2) of shear cylinder (5) front end, the two
Interact and will cut off into the finger sleeve (4) of shearing case (7)；After aqueous medium release, back-moving spring promotes piston and piston
On movable blades (6) to away from fixed blade (2) direction movement, i.e. piston reset.
2. finger sleeve according to claim 1 aqueous medium hydraulic cutting device under water, it is characterised in that：Using sealing ring reality
Existing piston and the sealing of oil cylinder free gap.
3. finger sleeve according to claim 1 aqueous medium hydraulic cutting device under water, it is characterised in that：The square guiding
Set, top is in square, and case (7) is sheared in connection；Bottom is in square table guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551198.3A CN103862093B (en) | 2012-12-17 | 2012-12-17 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551198.3A CN103862093B (en) | 2012-12-17 | 2012-12-17 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103862093A CN103862093A (en) | 2014-06-18 |
| CN103862093B true CN103862093B (en) | 2017-05-17 |
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ID=50901442
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210551198.3A Active CN103862093B (en) | 2012-12-17 | 2012-12-17 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
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| Country | Link |
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| CN (1) | CN103862093B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189841B (en) * | 2019-06-12 | 2022-03-15 | 广西防城港核电有限公司 | Reuse method for old thrust section and extension section of nuclear power plant reactor core measurement system |
| CN110355415A (en) * | 2019-06-12 | 2019-10-22 | 上海核工程研究设计院有限公司 | A kind of in-pile instrument sheath assembly diced system |
| CN110497009A (en) * | 2019-08-29 | 2019-11-26 | 福建福清核电有限公司 | A kind of underwater medium hydraulic cutting device of RIC finger sleeve |
| CN115041741B (en) * | 2022-06-27 | 2023-05-26 | 中国船舶科学研究中心 | Underwater cutter and shearing method based on deep sea environmental pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511721A (en) * | 1978-07-05 | 1980-01-26 | Hitachi Ltd | Cutter |
| GB2120966B (en) * | 1982-06-03 | 1986-01-29 | Thyssen Ag | A shearing machine for cutting up in radiated nuclear fuel rod clusters having a decentralised compact construction |
| CN102087883A (en) * | 2009-12-04 | 2011-06-08 | 秦山核电有限公司 | Neutron flux measuring thimble tube replacing process of nuclear reactor core measuring system and specific device thereof |
| KR20110121046A (en) * | 2010-04-30 | 2011-11-07 | 현대제철 주식회사 | Hydraulic shear machine assembly |
| CN102319926A (en) * | 2011-09-14 | 2012-01-18 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Hydraulic long anchorage cable shearer |
| CN202207829U (en) * | 2011-07-29 | 2012-05-02 | 深圳市吉阳自动化科技有限公司 | Pole piece cutting-off device |
| CN203018820U (en) * | 2012-12-17 | 2013-06-26 | 核动力运行研究所 | Finger casing pipe underwater aqueous medium hydraulic shearing device |
-
2012
- 2012-12-17 CN CN201210551198.3A patent/CN103862093B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511721A (en) * | 1978-07-05 | 1980-01-26 | Hitachi Ltd | Cutter |
| GB2120966B (en) * | 1982-06-03 | 1986-01-29 | Thyssen Ag | A shearing machine for cutting up in radiated nuclear fuel rod clusters having a decentralised compact construction |
| CN102087883A (en) * | 2009-12-04 | 2011-06-08 | 秦山核电有限公司 | Neutron flux measuring thimble tube replacing process of nuclear reactor core measuring system and specific device thereof |
| KR20110121046A (en) * | 2010-04-30 | 2011-11-07 | 현대제철 주식회사 | Hydraulic shear machine assembly |
| CN202207829U (en) * | 2011-07-29 | 2012-05-02 | 深圳市吉阳自动化科技有限公司 | Pole piece cutting-off device |
| CN102319926A (en) * | 2011-09-14 | 2012-01-18 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Hydraulic long anchorage cable shearer |
| CN203018820U (en) * | 2012-12-17 | 2013-06-26 | 核动力运行研究所 | Finger casing pipe underwater aqueous medium hydraulic shearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103862093A (en) | 2014-06-18 |
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