CN106816192A - 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
- CN106816192A CN106816192A CN201510860715.9A CN201510860715A CN106816192A CN 106816192 A CN106816192 A CN 106816192A CN 201510860715 A CN201510860715 A CN 201510860715A CN 106816192 A CN106816192 A CN 106816192A
- Authority
- CN
- China
- Prior art keywords
- position indicator
- cylinder
- drive disk
- disk assembly
- upper element
- 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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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
Abstract
The invention belongs to nuclear power plant reactor maintenance field, and in particular to bite position indicator withdrawing device on a kind of reactor upper element.The device includes the cylinder of one end closing, the drive disk assembly of one end is closed positioned at cylinder, and drive disk assembly one end passes cylinder, and one end is located at inner barrel；Drive disk assembly has to the fastener of crawl position indicator positioned at inner barrel one end；Drive disk assembly can be moved relative to cylinder.Can realize safely and efficiently taking out bite position indicator with bite position indicator withdrawing device on new reactor upper element, reduce the time that position indicator taking-up work occupies overhaul critical path, while reducing operating personnel's radioactive dose.
Description
Technical field
The invention belongs to nuclear power plant reactor maintenance field, and in particular to bite on a kind of reactor upper element
Position indicator withdrawing device.
Background technology
CRDM is made up of 5 parts on the nuclear power plant reactor upper element of field gulf：Electromagnet group
Part, pneumatic shell, moving assembly, drive rod, position indicator.Wherein position indicator is used to supervise step by step
The position of control rod is surveyed, there is multigroup sensing element inside, and single weight is 18 kilograms.Position indicator and shifting
Dynamic component by falling flange seal, seal have 6 bolts, 6 nuts, 6 pads, 2 semi-rings and
The reinforced graphite gasket of Φ 58 × Φ, 53 × 4.5mm models.Reload in year during overhauling, using jib crane
Removal position indicator 103 is needed altogether.Occurs the position indicator of bite in all previous overhaul.To these
When position indicator is taken out work, former removing method is：With copper rod, gently beating position refers to staff
Show device head, while jib crane driver increases crane lifting speed, by force extracting position indicator.Using
There is many risks and adverse effect in this method：Moment lifts position indicator and produces larger bounce,
There is the risk for damaging position indicator flange, moving assembly sealing surface and fastening bolt screw thread；Increase personnel exist
Activity duration under environmental dose (0.05-0.1mSv/h) high, so as to increase personnel's radioactive dose；In the presence of damage
Hinder the risk of position indicator internal electronic element.In view of the defect of former bite position indicator device removing method
With deficiency, Jiangsu Nuclear Electric Inc. develops a kind of reactor upper element bite position indicator first
Withdrawing device.
The content of the invention
The technical problem to be solved in the present invention is to provide bite position indicator on a kind of reactor upper element and takes
Go out device, realize slowly applying pulling force to the position indicator of bite, untie position indicator and moving assembly
Sealing, accomplish safely and efficiently to take out bite position indicator, eliminate risk that former method brings with it is bad
Influence.
In order to solve the above technical problems, bite position indicator takes out on a kind of reactor upper element of the invention
Device, the device includes the cylinder of one end closing, the drive disk assembly of one end is closed positioned at cylinder, drive disk assembly
One end passes cylinder, and one end is located at inner barrel；Drive disk assembly captures position positioned at inner barrel one end
Put the fastener of indicator；Drive disk assembly can be moved relative to cylinder.
Described drive disk assembly is located at cylinder outside threaded one end and is provided with attaching nut.
Drive disk assembly include fastener, the full flight screw positioned at fastener top, full flight screw pass cylinder and
Outside is installed by attaching nut；Hole of the catch through fastener center is arranged at full flight screw bottom, by full flight screw
Lower end is limited in fastener.
Fastener includes sealing cap, position indicator suspender, jackscrew, and sealing cap lower surface is consolidated with position indicator suspender
Fixed, there is jackscrew in position indicator suspender outside.
Cylinder includes outer cylinder body, top observation panel, bottom observation panel, penetrates hole, base, outer cylinder body one end
Closing, there is opening at one end open, blind end center, is full flight screw insertion position；On outer cylinder body outside
Top observation panel, bottom observation panel are arranged successively at portion and bottom；There is base outer cylinder body openend.
Advantageous Effects of the invention are：Taken with bite position indicator on new reactor upper element
Going out device can realize safely and efficiently taking out bite position indicator, reduce position indicator taking-up work and account for
According to the time of overhaul critical path, while reducing operating personnel's radioactive dose.Additionally, using new bite position
Put indicator withdrawing device greatly reduce position indicator sealing surface, the surface damage of moving assembly head seal and
The risk that position indicator inner member is damaged, eliminates the direct economic loss that parts replacement brings.
Brief 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 invention；
Fig. 3 is drive disk assembly schematic diagram of the present invention；
Fig. 4 is withdrawing device cylinder schematic diagram of the present invention.
In figure：1-position indicator；2-drive disk assembly；3-attaching nut；4-cylinder；21-full spiral shell
Line screw rod；22-catch；23-sealing cap；24-position indicator suspender；25-jackscrew；41-outer cylinder body；
42-top observation panel；43-bottom observation panel；44-penetrate hole；45-base.
Specific embodiment
The present invention is described in further 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, the device includes one end
The cylinder 4 of closing, the drive disk assembly 2 that one end is closed positioned at cylinder 4, one end of drive disk assembly 2 pass cylinder 4,
One end is located inside cylinder 4；Drive disk assembly 2 has to crawl position indicator 1 positioned at the inside one end of cylinder 4
Fastener；Drive disk assembly 2 can be moved relative to cylinder 4.
Drive disk assembly 2 is provided with attaching nut 3 positioned at the outside threaded one end of cylinder 4, is used to control drive disk assembly
2 relative to cylinder 4 movement.
Drive disk assembly 2 includes fastener, the full flight screw 21 positioned at fastener top, and full flight screw 21 is passed
Cylinder 4 and outside installation attaching nut 3, there is provided untie slow pulling force needed for the sealing of bite position indicator；Entirely
Hole of the catch 22 through fastener center is arranged at the bottom of thread screw 21, and the lower end of full flight screw 21 is limited into card
In part, it is set to be connected and be freely rotatable with sealing cap.
Fastener includes sealing cap 23, position indicator suspender 24, jackscrew 25, sealing cap lower surface and position instruction
Device suspender 24 is welded, and position indicator suspender 24 has outside jackscrew 25.In operation with position indicator head
Realize being reliably connected by jackscrew 25 in portion.
Cylinder 4 includes outer cylinder body 41, top observation panel 42, bottom observation panel 43, penetrates hole 44, base
45, there is opening at the one end of outer cylinder body 41 closing, one end open, blind end center, is that full flight screw 21 is inserted
Enter position；Top observation panel 42, bottom observation panel 43 are arranged successively at the outer upper of outer cylinder body 41 and bottom；Outward
There is base 45 openend of cylinder 41.The rectangular top observation panel 42 of upper design, facilitates operating personnel
The position of adjusting position indicator suspender is observed, cylinder bottom is designed with bottom observation panel 43, is easy to operator
Member connects suspender in removal position indicator and is easy to confirm that position indicator is separated with moving assembly.Take
Go out design structure of the device pedestal 45 using position indicator third layer protective case base, perfection agrees with upper group
Part upper plate structure, it is ensured that withdrawing device is solid and reliable to be supported on upper plate.
The outside of outer cylinder body 41 is welded with handle, convenient to carry.
During work, withdrawing device is placed on upper element upper plate with jib crane；By two operating personnels
Withdrawing device is lifted and is aligned by carrying handle and is torn slotted eye where bite position indicator open and is seated to
It is careful not to collide position indicator and electromagnet assembly cable connector on plate, during operation；Rotatable engagement spiral shell
Female 3, with its suspender be reliably connected position indicator by down position indicator suspender to position indicator head；
Turn attaching nut 3 clockwise with spanner, upper lifting tool makes position indicator carry out depressurization with moving assembly；
Untie suspender to be connected with position indicator, remove withdrawing device, continuing to complete the position using jib crane refers to
Show that device subsequently takes out work.
Using this Project design make the special withdrawing device of bite position indicator, can be generalized to power station its
The dismantlement work of his similar seal member.
This project also has good reference for other similar seal member dismantlement works of the same trade.
Claims (5)
1. bite position indicator withdrawing device on a kind of reactor upper element, it is characterised in that：The device
Cylinder (4) including one end closing, the drive disk assembly (2) that one end is closed positioned at cylinder (4), drive disk assembly
(2) one end passes cylinder (4), and it is internal that one end is located at cylinder (4)；Drive disk assembly (2) is positioned at cylinder (4)
Internal one end has to the fastener of crawl position indicator (1)；Drive disk assembly (2) can be relative to cylinder
(4) it is mobile.
2. bite position indicator withdrawing device on a kind of reactor upper element according to claim 1,
It is characterized in that：Described drive disk assembly (2) is provided with cooperation spiral shell positioned at the outside threaded one end of cylinder (4)
Female (3).
3. bite position indicator withdrawing device on a kind of reactor upper element according to claim 2,
It is characterized in that：Drive disk assembly (2) includes fastener, the full flight screw (21) positioned at fastener top, entirely
Thread screw (21) passes cylinder (4) and attaching nut (3) is installed in outside；Under full flight screw (21)
There is hole of the catch (22) through fastener center in portion, and full flight screw (21) lower end is limited in fastener.
4. bite position indicator withdrawing device on a kind of reactor upper element according to claim 3,
It is characterized in that：Fastener includes sealing cap (23), position indicator suspender (24), jackscrew (25), under sealing cap
End face is fixed with position indicator suspender (24), and there is jackscrew (25) in position indicator suspender (24) outside.
5. bite position indicator withdrawing device on a kind of reactor upper element according to claim 4,
It is characterized in that：Cylinder (4) including outer cylinder body (41), top observation panel (42), bottom observation panel (43),
Hole (44), base (45) are penetrated, outer cylinder body (41) one end is closed, and one end open, blind end center has
Opening, is full flight screw (21) insertion position；On outer cylinder body (41) outer upper and bottom have successively
Portion's observation panel (42), bottom observation panel (43)；There is base (45) outer cylinder body (41) openend.
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 true CN106816192A (en) | 2017-06-09 |
| CN106816192B CN106816192B (en) | 2018-11-02 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106816192B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717783A (en) * | 2020-06-30 | 2020-09-29 | 中国原子能科学研究院 | Grabbing mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577112A (en) * | 1983-04-13 | 1986-03-18 | Commissariat A L'energie Atomique | Movable enclosure for the replacement and transportation of contaminated parts and complementary casing for such an enclosure |
| JPH06118196A (en) * | 1992-10-05 | 1994-04-28 | Toshiba Corp | Handling device for control rod drive mechanism |
| CN101734550A (en) * | 2008-11-20 | 2010-06-16 | 中国核电工程有限公司 | Novel fuel assembly gripping apparatus |
| CN102117666A (en) * | 2009-12-31 | 2011-07-06 | 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 |
-
2015
- 2015-11-30 CN CN201510860715.9A patent/CN106816192B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577112A (en) * | 1983-04-13 | 1986-03-18 | Commissariat A L'energie Atomique | Movable enclosure for the replacement and transportation of contaminated parts and complementary casing for such an enclosure |
| JPH06118196A (en) * | 1992-10-05 | 1994-04-28 | Toshiba Corp | Handling device for control rod drive mechanism |
| CN101734550A (en) * | 2008-11-20 | 2010-06-16 | 中国核电工程有限公司 | Novel fuel assembly gripping apparatus |
| CN102117666A (en) * | 2009-12-31 | 2011-07-06 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717783A (en) * | 2020-06-30 | 2020-09-29 | 中国原子能科学研究院 | Grabbing mechanism |
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| Publication number | Publication date |
|---|---|
| CN106816192B (en) | 2018-11-02 |
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