CN203018820U - Finger casing pipe underwater aqueous medium hydraulic shearing device - Google Patents
Finger casing pipe underwater aqueous medium hydraulic shearing device Download PDFInfo
- Publication number
- CN203018820U CN203018820U CN 201220701007 CN201220701007U CN203018820U CN 203018820 U CN203018820 U CN 203018820U CN 201220701007 CN201220701007 CN 201220701007 CN 201220701007 U CN201220701007 U CN 201220701007U CN 203018820 U CN203018820 U CN 203018820U
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- shear
- cylinder
- aqueous medium
- finger sleeve
- piston
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Abstract
The utility model belongs to the technical field of maintenance of reactor pressure vessels and particularly relates to a finger casing pipe underwater aqueous medium hydraulic shearing device. The finger casing pipe underwater aqueous medium hydraulic shearing device comprises a box body, a shearing cylinder and a shearing blade, wherein the shearing cylinder is arranged inside the box body. The shearing blade consists of a fixed blade and a movable blade, wherein the fixed blade is installed on the inner side of the front end of the shearing cylinder, and the movable blade is installed at the front end of a piston of the shearing cylinder. The finger casing pipe underwater aqueous medium hydraulic shearing device can reliably achieve shearing work of a discarded finger casing pipe activated section, enables the discarded finger casing pipe activated section to be conveniently stored in a closed container, and ensures safety of a power plant.
Description
Technical field
The utility model belongs to reactor pressure vessel maintenance technique field, is specifically related to a kind of finger sleeve aqueous medium hydraulic cutting device under water.
Background technology
Finger sleeve is to provide guiding and passage for the removable reactor core detector of reactor core neutron flux measurement system.Be used for measuring the Flux Distribution of reactor core neutron, be convenient to obtain accurate flux pattern on all fuel assemblies and each fuel stack height, wherein the damage of arbitrary finger sleeve all will affect the accurate measurement of neutron flux.Finger sleeve starts from control room's seal section, through guide pipe, passes pressure vessel bottom, core support plate and lower Turbogrid plates and enters fuel assembly top, total length 13-16m always.
Finger sleeve approximately directly touches cooling agent on 18.4 ~ 34.8mm length between bottom lower Turbogrid plates and fuel assembly, changes in flow rate herein and flow-induced vibration refer to the main cause of casing wear.The breakage of finger sleeve can cause leakage and the pollution of a circuit cools agent.Because its present position is special, it weares and teares even, and crack conditions happens occasionally, 20 thick attenuates of endwall in 58 finger sleeves once occured and surpassed 60% situation in USA Nuclear Power Plants, and pressure vessel bottom coohng agent flux changes and flow-induced vibration refers to the main cause of casing wear.The Qinshan power station once caused because hanging basket fault, guide pipe damage that finger sleeve in succession stopped up, leaks, ruptures and change in 1999.The attenuate of finger sleeve leaks, and can make near the personnel of isolating valve have radiation hazard.
When the pipe thickness attenuate reaches 65%, when foreign matters from being blocked, fracture, leakage, accidental damage, the essential finger sleeve of changing.
The discarded finger sleeve that reactor pressure vessel is changed requires to use scissors that activation section is sheared, and is convenient to store at closed container, guarantees the safety of power plant.
The utility model content
The utility model technical issues that need to address are: a kind of finger sleeve aqueous medium hydraulic cutting device under water is provided, can reliably realizes the shearing work of discarded finger sleeve activation section.
The technical solution of the utility model is as described below:
Finger sleeve is the aqueous medium hydraulic cutting device under water, comprises casing, shear cylinder and shear-blade; Shear cylinder is positioned at box house, and shear-blade comprises fixed blade and movable blades, and it is inboard that fixed blade is installed on the shear cylinder front end, and movable blades is installed on the shear cylinder piston nose.
Described casing comprises from top to bottom: taper guide cylinder, shearing case and square fairlead, the three links into an integrated entity, the taper guide cylinder play the guiding role to the finger sleeve of putting into it, be convenient to finger sleeve and vertically enter the shearing case, square fairlead is set in discarded finger sleeve container top, makes to shear the finger sleeve that case shears and fall in discarded finger sleeve container.
Described shearing case inside is equipped with shear cylinder; Shear cylinder comprise piston, oil cylinder and both between back-moving spring; Piston is arranged at oil cylinder inside, oil cylinder is provided with oil cylinder cover at the shear cylinder rear portion, oil cylinder cover is provided with through hole, outside aqueous medium enters oil cylinder inside through the oil cylinder cover through hole, movable blades on pushing piston and piston moves to the fixed blade of shear cylinder front end, and the two-way interaction will enter the finger sleeve of shearing case and cut off; After the aqueous medium release, the movable blades on back-moving spring pushing piston and piston is to moving away from the fixed blade direction, i.e. piston reset.
As preferred version, adopt sealing ring to realize the sealing of piston and oil cylinder free gap.
As further preferred version, described square fairlead, top is square, connects to shear case; The bottom is the side's of being platform shape guide plate.
The beneficial effects of the utility model are:
Finger sleeve of the present utility model is the aqueous medium hydraulic cutting device under water, can reliably realize the shearing work of discarded finger sleeve activation section, makes discarded finger sleeve activation section be convenient to store at closed container, guarantees the safety of power plant.
Description of drawings
Fig. 1 is finger sleeve of the present utility model aqueous medium hydraulic cutting device structural representation under water.
In figure, 1-discards the finger sleeve container, the 2-fixed blade, and 3-taper guide cylinder, the 4-finger sleeve, the 5-shear cylinder, the 6-movable blades, 7-shears case.
The specific embodiment
Below in conjunction with drawings and Examples to finger sleeve of the present utility model under water the aqueous medium hydraulic cutting device be elaborated.
Finger sleeve of the present utility model is the aqueous medium hydraulic cutting device under water, comprising: casing, shear cylinder 5 and shear-blade.Shear cylinder 5 is positioned at box house, and shear-blade comprises fixed blade 2 and movable blades 6, and it is inboard that fixed blade 2 is installed on shear cylinder 5 front ends, and movable blades 6 is installed on shear cylinder 5 piston nose.
Described casing comprises from top to bottom: taper guide cylinder 3, shearing case 7 and square fairlead, the three links into an integrated entity.
Square fairlead is set in discarded finger sleeve container 1 top.
As preferred version, adopt sealing ring to realize the sealing of piston and oil cylinder free gap.
Square fairlead, top is square, connects to shear case 7; The bottom is the side's of being platform shape guide plate, be convenient to finger sleeve of the present utility model under water the aqueous medium hydraulic cutting device be set in discarded finger sleeve container 1 top.
Claims (5)
1. finger sleeve aqueous medium hydraulic cutting device under water, comprise casing, shear cylinder (5) and shear-blade, it is characterized in that: shear cylinder (5) is positioned at box house, shear-blade comprises fixed blade (2) and movable blades (6), it is inboard that fixed blade (2) is installed on shear cylinder (5) front end, and movable blades (6) is installed on shear cylinder (5) piston nose.
2. finger sleeve according to claim 1 aqueous medium hydraulic cutting device under water, it is characterized in that: described casing comprises from top to bottom: taper guide cylinder (3), shearing case (7) and square fairlead, the three links into an integrated entity, taper guide cylinder (3) play the guiding role to the finger sleeve (4) of putting into it, be convenient to finger sleeve (4) and vertically enter shearing case (7), square fairlead is set in discarded finger sleeve container (1) top, makes to shear the finger sleeve (4) that case (7) shears and fall in discarded finger sleeve container (1).
3. finger sleeve according to claim 2 aqueous medium hydraulic cutting device under water is characterized in that: described shearing case (7) inside is equipped with shear cylinder (5); Shear cylinder (5) comprise piston, oil cylinder and both between back-moving spring; Piston is arranged at oil cylinder inside, oil cylinder is provided with oil cylinder cover at shear cylinder (5) rear portion, oil cylinder cover is provided with through hole, outside aqueous medium enters oil cylinder inside through the oil cylinder cover through hole, movable blades on pushing piston and piston (6) is mobile to the fixed blade (2) of shear cylinder (5) front end, and the two-way interaction will enter the finger sleeve (4) of shearing case (7) and cut off; After the aqueous medium release, the movable blades on back-moving spring pushing piston and piston (6) is to moving away from fixed blade (2) direction, i.e. piston reset.
4. finger sleeve according to claim 3 aqueous medium hydraulic cutting device under water is characterized in that: adopt sealing ring to realize the sealing of piston and oil cylinder free gap.
5. according to claim 2 or 3 described finger sleeves aqueous medium hydraulic cutting device under water is characterized in that: described square fairlead, and top is square, connects to shear case (7); The bottom is the side's of being platform shape guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701007 CN203018820U (en) | 2012-12-17 | 2012-12-17 | Finger casing pipe underwater aqueous medium hydraulic shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701007 CN203018820U (en) | 2012-12-17 | 2012-12-17 | Finger casing pipe underwater aqueous medium hydraulic shearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018820U true CN203018820U (en) | 2013-06-26 |
Family
ID=48642834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701007 Withdrawn - After Issue CN203018820U (en) | 2012-12-17 | 2012-12-17 | Finger casing pipe underwater aqueous medium hydraulic shearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203018820U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862093A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
| CN103861973A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Hydraulic shearing device for emergency of single person normal pressure diving apparatus |
| CN107088684A (en) * | 2017-03-29 | 2017-08-25 | 中国原子能科学研究院 | A kind of spent fuel rods cutter device and method |
| CN116206790B (en) * | 2023-02-17 | 2024-02-06 | 中核检修有限公司 | Neutron flux tube processing apparatus and method |
-
2012
- 2012-12-17 CN CN 201220701007 patent/CN203018820U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862093A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
| CN103862093B (en) * | 2012-12-17 | 2017-05-17 | 核动力运行研究所 | Guiding casing pipe underwater aqueous medium hydraulic shearing device |
| CN103861973A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Hydraulic shearing device for emergency of single person normal pressure diving apparatus |
| CN107088684A (en) * | 2017-03-29 | 2017-08-25 | 中国原子能科学研究院 | A kind of spent fuel rods cutter device and method |
| CN116206790B (en) * | 2023-02-17 | 2024-02-06 | 中核检修有限公司 | Neutron flux tube processing apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 74501 mailbox 430074, Hubei City, Wuhan Province Patentee after: Nuclear Power Running Inst. Patentee after: China Nuclear Power Operation Technology Co., Ltd. Address before: 74501 box 430074, Wuhan City, Hubei Province, Wuhan Patentee before: Nuclear Power Running Inst. Patentee before: China Nuclear Power Operation Technology Co.,Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20170517 |