CN106816192B - Bite position indicator withdrawing device on a kind of reactor upper element - Google Patents
Bite position indicator withdrawing device on a kind of reactor upper element Download PDFInfo
- Publication number
- CN106816192B CN106816192B CN201510860715.9A CN201510860715A CN106816192B CN 106816192 B CN106816192 B CN 106816192B CN 201510860715 A CN201510860715 A CN 201510860715A CN 106816192 B CN106816192 B CN 106816192B
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- China
- Prior art keywords
- position indicator
- cylinder
- transmission parts
- fastener
- withdrawing device
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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
Abstract
The invention belongs to nuclear power plant reactors to overhaul field, and in particular to bite position indicator withdrawing device on a kind of reactor upper element.The device includes the closed cylinder in one end, closes the transmission parts of one end positioned at cylinder, and transmission parts one end is pierced by cylinder, and one end is located at inner barrel；Transmission parts, which are located at inner barrel one end, to be had to the fastener of crawl position indicator；Transmission parts can be moved relative to cylinder.Safely and efficiently taking-up bite position indicator can be realized with bite position indicator withdrawing device on new reactor upper element, reduced position indicator taking-up work and occupied the time of overhaul critical path, while reducing operating personnel's radioactive dose.
Description
Technical field
The invention belongs to nuclear power plant reactors to overhaul field, and in particular to bite position refers on a kind of reactor upper element
Show device withdrawing device.
Background technology
Control rod drive mechanism is made of 5 parts on the nuclear power plant reactor upper element of field gulf：Electromagnet assembly, pressure resistance
Shell, moving assembly, drive rod, position indicator.Wherein position of the position indicator for monitoring and controlling stick step by step, inside has
Multigroup sensing element, single weight are 18 kilograms.By falling flange seal, sealing element has 6 for position indicator and moving assembly
The reinforced graphite gasket of bolt, 6 nuts, 6 gaskets, 2 semi-rings and Φ 58 × Φ, 53 × 4.5mm models.Year reloads
During maintenance, removal position indicator 103 is needed altogether using jib crane.Occurs the position instruction of bite in all previous overhaul
Device.When being taken out work to these position indicators, former removing method is：With copper rod, gently beating position indicates staff
Device head, while jib crane driver increases crane and promotes speed, by force extracting position indicator.Exist in this way and is permitted
Multi-risk System and adverse effect：Moment lifts position indicator and generates larger bounce, there is damage position indicator flange, movement
The risk of component sealing surface and fastening bolt screw thread；When operation of the increase personnel under high environmental dose (0.05-0.1mSv/h)
Between, to increase personnel's radioactive dose；There are the risks of damage position indicator internal electronic element.Refer in view of former bite position
Show that the shortcomings and deficiencies of device device removing method, Jiangsu Nuclear Electric Inc. develop a kind of reactor upper element bite position for the first time
Set the withdrawing device of indicator.
Invention content
The technical problem to be solved in the present invention is to provide bite position indicators on a kind of reactor upper element to take out dress
It sets, realization slowly applies pulling force to the position indicator of bite, unlocks the sealing of position indicator and moving assembly, accomplishes safety
It is efficient to take out bite position indicator, eliminate risk and harmful effect that original method is brought.
In order to solve the above technical problems, bite position indicator withdrawing device on a kind of reactor upper element of the present invention,
The device includes the closed cylinder in one end, closes the transmission parts of one end positioned at cylinder, and transmission parts one end is pierced by cylinder, one end
Positioned at inner barrel；Transmission parts, which are located at inner barrel one end, to be had to the fastener of crawl position indicator；Transmission parts can be with
It is moved relative to cylinder.
The transmission parts are located at threaded one end outside cylinder and are equipped with attaching nut.
Transmission parts include fastener, the full flight screw positioned at fastener top, and full flight screw is pierced by cylinder and outside is pacified
Fill attaching nut；Full flight screw lower part has catch to pass through the hole at fastener center, and full flight screw lower end is limited in fastener.
Fastener includes sealing cap, position indicator suspender, jackscrew, and sealing cap lower face is fixed with position indicator suspender, position
There is jackscrew on the outside of indicator suspender.
Cylinder includes outer barrel, top observation panel, lower part observation panel, penetrates hole, pedestal, the closing of outer barrel one end, one end
There is opening at opening, blind end center, are full flight screw insertion position；Top observation is arranged successively at outer barrel outer upper and lower part
Mouth, lower part observation panel；There is pedestal in outer barrel open end.
The beneficial technical effect of the present invention lies in：Dress is taken out with bite position indicator on new reactor upper element
Safely and efficiently taking-up bite position indicator can be realized by setting, and reduced position indicator taking-up work and occupied overhaul critical path
Time, while reducing operating personnel's radioactive dose.In addition, being greatly reduced using new bite position indicator withdrawing device
The risk that position indicator sealing surface, the surface damage of moving assembly head seal and position indicator internal element damage is eliminated standby
Part replaces the direct economic loss brought.
Description of the drawings
Fig. 1 is position indicator installation diagram；
Fig. 2 is bite position indicator withdrawing device schematic diagram on a kind of reactor upper element of the present invention；
Fig. 3 is transmission parts schematic diagram of the present invention；
Fig. 4 is withdrawing device cylinder schematic diagram of the present invention.
In figure：1-position indicator；2-transmission parts；3-attaching nuts；4-cylinders；21-full flight screws；
22-catch；23-sealing caps；24-position indicator suspenders；25-jackscrews；41-outer barreies；42-top observation panels；43—
Lower part observation panel；44-penetrate hole；45-pedestals.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and examples.
Bite position indicator withdrawing device on a kind of reactor upper element of the present invention, which includes that one end is closed
Cylinder 4, the transmission parts 2 that one end is closed positioned at cylinder 4,2 one end of transmission parts are pierced by cylinder 4, and one end is located inside cylinder 4；
Transmission parts 2, which are located at 4 inside one end of cylinder, to be had to the fastener of crawl position indicator 1；Transmission parts 2 can be relative to cylinder
4 movements.
Transmission parts 2 are located at 4 outside threaded one end of cylinder and are equipped with attaching nut 3, to control transmission parts 2 relative to
The movement of cylinder 4.
Transmission parts 2 include fastener, the full flight screw 21 positioned at fastener top, full flight screw 21 be pierced by cylinder 4 and
Attaching nut 3 is installed in outside, is provided and is unlocked slow pulling force needed for the sealing of bite position indicator；Gear is arranged at 21 lower part of full flight screw
Piece 22 passes through the hole at fastener center, and 21 lower end of full flight screw is limited in fastener, it is made to connect and can freely revolve with sealing cap
Turn.
Fastener includes sealing cap 23, position indicator suspender 24, jackscrew 25, and sealing cap lower face is welded with position indicator suspender 24
It connects, position indicator suspender 24 has outside jackscrew 25.It is realized by jackscrew 25 with position indicator head in operation and is reliably connected
It connects.
Cylinder 4 includes outer barrel 41, top observation panel 42, lower part observation panel 43, penetrates hole 44, pedestal 45, outer barrel 41
One end is closed, and there is opening at one end open, blind end center, is 21 insertion position of full flight screw；41 outer upper of outer barrel and
Top observation panel 42, lower part observation panel 43 are arranged successively at lower part；There is pedestal 45 in 41 open end of outer barrel.Upper design it is rectangular
Top observation panel 42, is conveniently operated the position of personal observations' adjusting position indicator suspender, and cylinder lower part is designed with lower part observation
Mouth 43, personnel easy to operation connect suspender in removal position indicator and convenient for confirming point of position indicator and moving assembly
From.Withdrawing device pedestal 45 uses the design structure of position indicator third layer protective case pedestal, perfection to agree on upper element
Harden structure ensures that withdrawing device is solid and reliable and is supported on upper plate.
41 outside of outer barrel is welded with handle, facilitates carrying.
When work, withdrawing device is placed on upper element upper plate with jib crane；By two operating personnels by removing
Fortune handle withdrawing device is lifted and be aligned tear bite position indicator open where slotted eye be seated on upper plate, when operation, pays attention to
Position indicator and electromagnet assembly cable connector are not collided；Rotatable engagement nut 3, down position indicator suspender to position
Indicator head is set, position indicator and its suspender are reliably connected；Turn attaching nut 3, upper lifting tool clockwise with spanner
Position indicator is set to carry out depressurization with moving assembly；It unlocks suspender to connect with position indicator, removes withdrawing device, using outstanding
Arm crane continues to complete the position indicator and subsequently takes out work.
The special withdrawing device of bite position indicator designed and produced using this project, can be generalized to power station, other are similar
The dismantlement work of seal member.
This project also has good reference for of the same trade other similar to seal member dismantlement work.
Claims (3)
1. bite position indicator withdrawing device on a kind of reactor upper element, it is characterised in that：The device includes an end seal
Cylinder (4), the transmission parts (2) positioned at cylinder (4) closing one end closed, transmission parts (2) one end is pierced by cylinder (4), one end
It is internal positioned at cylinder (4)；Transmission parts (2), which are located at the internal one end of cylinder (4), to be had to the fastener of crawl position indicator (1)；
Transmission parts (2) can be mobile relative to cylinder (4)；
The transmission parts (2) are located at the external threaded one end of cylinder (4) and are equipped with attaching nut (3)；
Transmission parts (2) include fastener, the full flight screw (21) positioned at fastener top, and full flight screw (21) is pierced by cylinder
(4) and attaching nut (3) is installed in outside；The hole that catch (22) passes through fastener center is arranged at full flight screw (21) lower part, by full spiral shell
Line screw rod (21) lower end is limited in fastener.
2. bite position indicator withdrawing device on a kind of reactor upper element according to claim 1, feature exist
In：Fastener includes sealing cap (23), position indicator suspender (24), jackscrew (25), sealing cap lower face and position indicator suspender
(24) fixed, there is jackscrew (25) on the outside of position indicator suspender (24).
3. bite position indicator withdrawing device on a kind of reactor upper element according to claim 2, feature exist
In：Cylinder (4) includes outer barrel (41), top observation panel (42), lower part observation panel (43), penetrates hole (44), pedestal (45), outside
Cylinder (41) one end is closed, and there is opening at one end open, blind end center, is full flight screw (21) insertion position；Outer barrel
(41) top observation panel (42), lower part observation panel (43) are arranged successively at outer upper and lower part；There is pedestal in outer barrel (41) open end
(45)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860715.9A CN106816192B (en) | 2015-11-30 | 2015-11-30 | Bite position indicator withdrawing device on a kind of reactor upper element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860715.9A CN106816192B (en) | 2015-11-30 | 2015-11-30 | Bite position indicator withdrawing device on a kind of reactor upper element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106816192A CN106816192A (en) | 2017-06-09 |
| CN106816192B true CN106816192B (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510860715.9A Active CN106816192B (en) | 2015-11-30 | 2015-11-30 | Bite position indicator withdrawing device on a kind of reactor upper element |
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| Country | Link |
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| CN (1) | CN106816192B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717783B (en) * | 2020-06-30 | 2021-11-02 | 中国原子能科学研究院 | Grabbing mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2544542B1 (en) * | 1983-04-13 | 1985-10-18 | Commissariat Energie Atomique | MOBILE SPEAKER FOR REPLACEMENT AND TRANSPORT OF CONTAMINATED PARTS, AND COMPLEMENTARY CASE OF SUCH A SPEAKER |
| JPH06118196A (en) * | 1992-10-05 | 1994-04-28 | Toshiba Corp | Handling device for control rod drive mechanism |
| CN101734550B (en) * | 2008-11-20 | 2011-11-09 | 中国核电工程有限公司 | Novel fuel assembly gripping apparatus |
| CN102117666B (en) * | 2009-12-31 | 2012-08-29 | 中国核动力研究设计院 | Impactor |
| CN203854004U (en) * | 2014-04-28 | 2014-10-01 | 吉林大学 | Ring-grabbing mechanical gripper |
| CN204525327U (en) * | 2015-01-13 | 2015-08-05 | 上海发电设备成套设计研究院 | A kind of for pressing the provision for disengagement of electrical penetration sealing ring in nuclear power station |
| CN205282109U (en) * | 2015-11-30 | 2016-06-01 | 江苏核电有限公司 | Bite position indicating device remove device on subassembly of reactor upper portion |
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| CN106816192A (en) | 2017-06-09 |
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