CN206263862U - A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles - Google Patents
A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles Download PDFInfo
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- CN206263862U CN206263862U CN201621225520.3U CN201621225520U CN206263862U CN 206263862 U CN206263862 U CN 206263862U CN 201621225520 U CN201621225520 U CN 201621225520U CN 206263862 U CN206263862 U CN 206263862U
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- tie
- arm
- limiting plate
- pulling claw
- pull bar
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model belongs to nuclear power plant equipment manufacture, mounting technology field, specifically related to a kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles, purpose be provide one kind can be used to manufacturing and build peace, debug during lower guide to cylinder installation tool, do not limited by operating space caused by upper-part in-reactor component and site environment and accessibility, reliably realized the elastic conjunction of bottom guide cylinder supporting pin and upper core plate.It is characterized in that：It includes pulling claw, pull bar, limiting plate, coarse thread leading screw and arm-tie；Limiting plate is located at the top of arm-tie；Through the center of arm-tie, upper end is fixed on the center of limiting plate lower surface to coarse thread leading screw；Pull bar lower end is fixedly connected with arm-tie, and middle part passes through limiting plate, and upper end is fixedly connected with pulling claw；Pulling claw lower end is in close contact with opening supports pin.During the utility model can effectively realize that compacted clay liners build peace and debugging, the in-site installation of upper-part in-reactor component specified location bottom guide cylinder.
Description
Technical field
The utility model belongs to nuclear power plant equipment manufacture, mounting technology field, and in particular to one kind is for structure in the heap of top
The pad instrument that part control rod guide tubes and bundles are installed.
Background technology
Pressurized-water reactor nuclear power plant upper-part in-reactor component is usually mounted with tens of groups of upper and lower part control rod guide tubes and bundles (hereinafter referred to as
Guide cylinder) component.As shown in Figure 1, consolidated with upper backup pad by flange and four fastening bolts in the middle of the guide cylinder of upper and lower part
It is fixed, carried out below by two opening supports pins on the guide cylinder flange in the bottom of bottom and the pin-and-hole elastic conjunction on upper core plate
Positioning, and the magnitude of interference is larger.This elastic conjunction of bottom guide cylinder opening supports pin is naturally into whole guide cylinder demolition, installation
The heavy difficult point of work.
The bottom guide cylinder installation tool and technique that currently manufactured factory takes are as follows：
Equipment assembles the stage, and top guide cylinder is not yet installed when bottom guide cylinder is installed, (i.e. lower guide at upper support board
To cylinder top flange position) in the absence of the limitation of working space and personnel's accessibility.Taken in the manufacture assembling stage according to equipment manufacturer
Assembling scheme or technique, using on original fastening bolt screwed hole on upper support board install two bolt instruments and
Pressing plate, downward pressure is applied to bottom guide cylinder top flange bottom supporting pin is pressed into upper core plate pin-and-hole, and under finally making
Portion's guide cylinder is installed in place.But this bottom guide cylinder mounting process be not suitable for scene build peace, debugging during upper guide to
Cylinder all install situations, and exist bolt tool operation it is asynchronous or force inequality cause bottom guide cylinder supporting pin
Inclined or over worn possibility is pressed, operation difficulty is higher, and there is the risk for damaging original screwed hole screw thread.
In view of actual conditions, after manufactory's assembling or during in-site installation, debugging, upper and lower part guide cylinder is all installed
In the case of, it is understood that there may be a certain group or several groups demand of upper and lower part guide cylinder is only dismounted, for example：It is oriented to after manufactory's assembling
Cylinder acceptance test is unqualified to need adjustment to change certain group guide cylinder, or due to first heap Flow vibration experiment (abbreviation CVAP) etc. other
Debugging test instrument installation requirements, or guide cylinder pulls and pushes power experiment other reasons such as unqualified and causes during in-site installation, debugging
Need to adjust or change certain group guide cylinder.And other parts (such as heap may be already equipped with around upper-part in-reactor component guide cylinder
Interior instrument screen work component etc.).Now such as according to above-mentioned manufactory's technique, the position such as upper support board exist operating space it is limited and
The problems such as personnel are unreachable.
To meet the demand, it is necessary to invent a kind of upper-part in-reactor component bottom guide cylinder installation tool and technique, with reality
Present upper-part in-reactor component upper and lower part guide cylinder completes the reliable installation of specified location guide cylinder in the case of all installing.
Utility model content
The purpose of this utility model be provide one kind can be used to manufacturing and build peace, debug during lower guide to cylinder erector
Tool, is not limited by operating space caused by upper-part in-reactor component and site environment and accessibility, reliably realizes bottom guide cylinder branch
The elastic conjunction of support pin and upper core plate.
What the utility model was realized in：
It is a kind of for upper-part in-reactor component control rod guide tubes and bundles install pad instrument, including pulling claw, pull bar, limiting plate,
Coarse thread leading screw and arm-tie；Limiting plate is located at the top of arm-tie；Through the center of arm-tie, upper end is fixed on spacing coarse thread leading screw
The center of plate lower surface；Pull bar lower end is fixedly connected with arm-tie, and middle part passes through limiting plate, and upper end is fixedly connected with pulling claw；Pulling claw
Lower end is in close contact with opening supports pin.
Pulling claw as described above has two, profile and bottom guide cylinder flange in the bottom and the in-pile instrument support column of pulling claw
The profile of bottom support bracket matches；Limiting plate is rectangular flat, and intermediate lands part contacts with upper core plate lower surface, and both sides add
The unthreaded hole that work coordinates with pull bar；Arm-tie is rectangular flat, and thickness is more than limiting plate, and center machined and screw mandrel cooperation
Screwed hole, both sides machined the unthreaded hole coordinated with pull bar bottom；Pull bar has two, and top is threaded and convex shoulder, passes through
Nut is connected with pulling claw；Centre is light bar segment, and the unthreaded hole with limiting plate both sides coordinates, and polished rod pars infrasegmentalis is machined with two and puts down
Face；Bottom is threaded, and the unthreaded hole with arm-tie both sides coordinates, and fixed thereto by upper and lower two nuts；Coarse thread screw mandrel with
Screwed hole in the middle of arm-tie cooperatively forms jackscrew mechanism, and screw mandrel head withstands on limiting plate center, screws the turret head of screw mandrel bottom,
Arm-tie is set to drive two lateral bracing struts and pulling claw to lower feeding.
Pulling claw, pull bar, limiting plate, coarse thread screw mandrel and arm-tie as described above are made of stainless steel material.
The beneficial effects of the utility model are：
During the utility model can effectively realize that compacted clay liners build peace and debugging, upper-part in-reactor component specific bit
Put the in-site installation of bottom guide cylinder.Manufactory's assembling condition and technique are different from, pass through invented bottom guide cylinder support
Pin pressing in tool and operating procedure, with more reliable, the more stable and accurate assembling for realizing supporting pin, and can avoid equipment from damaging
Wound；Make full use of equipment to construct and build peace site environment in itself simultaneously, caused after not being completed all by upper and lower part guide cylinder
Operating space and personnel's accessibility limitation.The instrument and technique invented are readily adaptable for use in the manufacture plant assembling stage.
The tool construction is simple, and simple operation, reliability, the instrument or its structural principle may extend to other similar pins, hole elastic conjunction
Situation, specific advantage and effect are as follows：
It is different from manufactory and applies stressed mode, this hair from bottom guide cylinder top by the original screwed hole of apparatus body
The bright bottom pressing in tool taken based on device structure and technique are had the advantage that：A) can realize building peace and debugging stage,
Under conditions of upper-part in-reactor component upper and lower part guide cylinder is all installed, any installation for formulating position guide cylinder, not by top
Operating space and accessibility are limited at supporting plate, or avoid removing more guiding to meet operating space and personnel's accessibility
Cylinder；B) used as core level key equipment, guide cylinder fastening bolt screw screw thread is once damaged in-pile component, the flow and technique of reparation
Will be extremely complex, and bottom press-in technique, it is fixed in the non-cooperation plane of bottom guide cylinder lower flange by pulling claw, and directly make
Near supported on both sides pin, body screwed hole damage risk is evaded completely, and power transmission is more directly, process of press in guide cylinder
It is difficult to incline, supporting pin press-in is more steady, effective.
Two pull bars and pulling claw are installed on an arm-tie, can be real by the downward jacking arm-tie of single screw mandrel torquing operations
Existing two lateral bracing struts are synchronously drop-down, facilitate one man operation and bottom guide cylinder lower flange both sides uniform force and support can be effectively ensured
Sell the uniformity of press-in.
Two lateral bracing strut bottoms are connected by screw thread with arm-tie, when instrument is installed, can make arm-tie water with adjusting yoke length
It is flat；It is inclined if there is asynchronous or unilateral pressure in supporting pin process of press in, can also be by the nut-screw rod knot of pull bar bottom
Structure carries out unilateral feeding adjustment.
Two lateral bracing strut bottom screws section is fixed by the screw certain with arm-tie spacing, and light bar segment passes through spacing in the middle of pull bar
Plate both sides add the fixed pulling claw in top and are matched according to the support base appearance and size of both sides meter support post with the pilot hole of spacing
Processing, so by spacing measure at upper, middle and lower three, pulling claw is slided caused by can effectively preventing instrument stress from sliding or deforming
It is de-, it is ensured that the stability of tool operation and supporting pin press-in.
This screw thread jackscrew mechanism of middle screw mandrel and two lateral bracing struts, by pitch and screws angle or the number of turns and controls, and enters
To accurate, controllable, be capable of achieving that supporting pin is slow, smoothly press-in, be completely suitable for guide cylinder return during dress CVAP instrument and
Wire synchronization installation situation (gap is minimum, about 1~2mm), and can effectively evade collide with or extrude caused by damage risk.
Big for the supporting pin assembling magnitude of interference, tool design is calculated and fully meets intensity requirement；And matched somebody with somebody by wire rod thread
Close design and calculate and screw mandrel moment of torsion can be converted to pressure suffered by supporting pin, so as to the pressure for controlling supporting pin suffered when being pressed into.
Brief description of the drawings
Fig. 1 is upper and lower part guide cylinder scheme of installation；
Fig. 2 is a kind of structural representation of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles of the invention
Figure；
Fig. 3 is to use a kind of pad instrument pulling claw peace installed for upper-part in-reactor component control rod guide tubes and bundles of the invention
Dress schematic diagram.
Wherein：1. top guide cylinder, 2. bottom guide cylinder, 3. upper support board, 4. upper core plate, 5. spacer flanger fastening
Bolt, 6. opening supports pin, 7. bottom guide cylinder lower flange, 8. upper core plate metering orifice, 9. pulling claw, 10. pull bar, 11. is spacing
Plate, 12. coarse thread screw mandrels, 13. arm-ties, 14. in-pile instrument support columns.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in accompanying drawing 2,3, a kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles, including pulling claw
9th, pull bar 10, limiting plate 11, coarse thread leading screw 12 and arm-tie 13.Limiting plate 11 is located at the top of arm-tie 13.Coarse thread leading screw 12 is passed through
The center of arm-tie 13, upper end is fixed on the center of the lower surface of limiting plate 11.The lower end of pull bar 10 is fixedly connected with arm-tie 13, in
Portion passes through limiting plate 11, and upper end is fixedly connected with pulling claw 9.The lower end of pulling claw 9 is in close contact with opening supports pin 6.
Wherein pulling claw 9 has two, and the profile of pulling claw 9 (avoids supporting pin to consolidate according to bottom guide cylinder flange in the bottom 7 respectively
Determine nut) and the profile of in-pile instrument support column bottom support bracket 14 be designed processing, both made full use of device structure to avoid
Interfere with apparatus body, it is ensured that the active area of pulling claw 9 and flange 7, and can be with the process of press in of opening supports pin 6
Carry out spacing using in-pile instrument support column bottom support bracket 14 and be oriented to, prevent outer of pulling claw 9 and slip.Wherein limiting plate 11 is
Rectangular flat, intermediate lands part contacts with the lower surface of upper core plate 4, and both sides machined the unthreaded hole coordinated with pull bar 10.Wherein
Arm-tie 13 is rectangular flat, and thickness is more than limiting plate 11, and center machined the screwed hole coordinated with screw mandrel 12, both sides processing
The unthreaded hole coordinated with pull bar 10 bottom.Wherein pull bar 10 has two, and top is threaded and convex shoulder, can be by nut
It is connected with pulling claw 9；Centre is light bar segment, and the unthreaded hole with the both sides of limiting plate 11 coordinates, and plays spacing, guide effect, prevents
Pull bar 10 deforms, deflection and cause pulling claw 9 to slip, polished rod pars infrasegmentalis is machined with two planes in addition, facilitate open-end wrench to draw
Bar 10 carries out reaction and fixes；Bottom is threaded, and coordinates with the unthreaded hole of the both sides of arm-tie 13, and by upper and lower two nuts with
Fixation, instrument installs the starting stage can make the level of arm-tie 13 by adjusting the length of two lateral bracing struts 10, and then ensure both sides
The uniform force of pull bar 10, it is inclined if there is asynchronous or unilateral pressure in the process of press in of supporting pin 6, can also be by pull bar 10
The nut of bottom, screw-rod structure carry out unilateral feeding adjustment.Wherein coarse thread screw mandrel 12 coordinates shape with the screwed hole in the middle of arm-tie 13
Into jackscrew mechanism, the head of screw mandrel 12 withstands on the center of limiting plate 11, by screwing the turret head of the bottom of screw mandrel 12, drives arm-tie 13
Two lateral bracing struts 10 and pulling claw 9 are realized that supported on both sides pin 6 is steady, are synchronously pressed into lower feeding.
In the present embodiment, pulling claw 9, pull bar 10, limiting plate 11, coarse thread screw mandrel 12 and arm-tie 13 use stainless steel material
It is made.
As shown in accompanying drawing 2,3, so that bottom guide cylinder N-11 is installed as an example, during work：The guide cylinder N- below upper core plate 4
11 correspondence positions install supporting pin pressing in tool, make two pulling claws 9 of pressing in tool and pull bar 10 from upper core plate metering orifice 8 or
Stretched into the corresponding hole of meter support column bottom bearing 14 and 180 ° symmetrical act on the upper surface two of bottom guide cylinder lower flange 7
Side, just avoids supporting pin fixing nut position；Successively limiting plate 11 and (the coarse thread screw mandrel 12 of arm-tie 13 are inserted in from the lower section of pull bar 10
Arm-tie 13 is suitably screwed into), the length of appropriate adjusting yoke 10 makes the level of arm-tie 13 and is consolidated with arm-tie 13 by tightening nut
Fixed, limiting plate 11 is held out against and touch upper core plate 4 by appropriate adjustment screw mandrel 12；Make the band of arm-tie 13 using spanner rotary screw mechanism 12
Move two lateral bracing struts 10 and the uniform stressed of pulling claw 9 and guide cylinder lower flange 7 will be pulled down, make the synchronous insertion upper core plate of supporting pin 6
Pin-and-hole is until (the attention completely in place of bottom guide cylinder 2：The both sides pulling claw 9 of pressing in tool should be made in the process of press in of supporting pin 6 and drawn
The uniform force of bar 10, synchro-feed, it is ensured that supported on both sides pin 6 is synchronous to be pushed).
All any modification, equivalent and improvement for being made etc. within spirit of the present utility model and principle, all should be
Within protection domain of the present utility model.
Claims (3)
1. it is a kind of for upper-part in-reactor component control rod guide tubes and bundles install pad instrument, it is characterised in that：It includes pulling claw
(9), pull bar (10), limiting plate (11), coarse thread leading screw (12) and arm-tie (13)；Top of the limiting plate (11) positioned at arm-tie (13)；
Through the center of arm-tie (13), upper end is fixed on the center of limiting plate (11) lower surface to coarse thread leading screw (12)；Pull bar (10)
Lower end is fixedly connected with arm-tie (13), and middle part passes through limiting plate (11), and upper end is fixedly connected with pulling claw (9)；Pulling claw (9) lower end with
Opening supports pin (6) is in close contact.
2. the pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles according to claim 1, its feature exists
In：Described pulling claw (9) has two, profile and bottom guide cylinder flange in the bottom (7) and the in-pile instrument support column of pulling claw (9)
The profile of bottom support bracket (14) matches；Limiting plate (11) is rectangular flat, intermediate lands part and upper core plate (4) lower surface
Contact, both sides machined the unthreaded hole coordinated with pull bar (10)；Arm-tie (13) is rectangular flat, and thickness is more than limiting plate (11), in
Heart position machined the screwed hole coordinated with screw mandrel (12), and both sides machined the unthreaded hole coordinated with pull bar (10) bottom；Pull bar
(10) two are had, top is threaded and convex shoulder, is connected with pulling claw (9) by nut；Centre is light bar segment, with limit
The unthreaded hole of position plate (11) both sides coordinates, and polished rod pars infrasegmentalis is machined with two planes；Bottom is threaded, with arm-tie (13) both sides
Unthreaded hole coordinate, it is and fixed thereto by upper and lower two nuts；Coarse thread screw mandrel (12) coordinates with the screwed hole in the middle of arm-tie (13)
Jackscrew mechanism is formed, screw mandrel (12) head withstands on limiting plate (11) center, screws the turret head of screw mandrel (12) bottom, makes arm-tie
(13) two lateral bracing struts (10) and pulling claw (9) are driven to lower feeding.
3. the pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles according to claim 1, its feature exists
In：Described pulling claw (9), pull bar (10), limiting plate (11), coarse thread screw mandrel (12) and arm-tie (13) use stainless steel material system
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225520.3U CN206263862U (en) | 2016-11-15 | 2016-11-15 | A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225520.3U CN206263862U (en) | 2016-11-15 | 2016-11-15 | A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles |
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| Publication Number | Publication Date |
|---|---|
| CN206263862U true CN206263862U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621225520.3U Active CN206263862U (en) | 2016-11-15 | 2016-11-15 | A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107804787A (en) * | 2017-10-23 | 2018-03-16 | 上海第机床厂有限公司 | Guide cylinder lifting device |
| CN107887044A (en) * | 2017-10-27 | 2018-04-06 | 三门核电有限公司 | A kind of reactor bottom in-pile component underwater centralising device at a distance |
| CN109968275A (en) * | 2017-12-28 | 2019-07-05 | 三门核电有限公司 | A kind of live dismounting process of upper-part in-reactor component control rod guide tubes and bundles |
| CN112133463A (en) * | 2020-09-22 | 2020-12-25 | 中广核核电运营有限公司 | Supporting device, in-pile component supporting assembly and mounting method of supporting device |
-
2016
- 2016-11-15 CN CN201621225520.3U patent/CN206263862U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107804787A (en) * | 2017-10-23 | 2018-03-16 | 上海第机床厂有限公司 | Guide cylinder lifting device |
| CN107804787B (en) * | 2017-10-23 | 2024-05-24 | 上海第一机床厂有限公司 | Guide cylinder lifting tool |
| CN107887044A (en) * | 2017-10-27 | 2018-04-06 | 三门核电有限公司 | A kind of reactor bottom in-pile component underwater centralising device at a distance |
| CN107887044B (en) * | 2017-10-27 | 2019-07-19 | 三门核电有限公司 | A kind of reactor lower part in-pile component underwater centralising device at a distance |
| CN109968275A (en) * | 2017-12-28 | 2019-07-05 | 三门核电有限公司 | A kind of live dismounting process of upper-part in-reactor component control rod guide tubes and bundles |
| CN109968275B (en) * | 2017-12-28 | 2020-08-28 | 三门核电有限公司 | On-site dismounting process for upper reactor internals control rod guide cylinder |
| CN112133463A (en) * | 2020-09-22 | 2020-12-25 | 中广核核电运营有限公司 | Supporting device, in-pile component supporting assembly and mounting method of supporting device |
| CN112133463B (en) * | 2020-09-22 | 2023-02-17 | 中广核核电运营有限公司 | Supporting device, in-pile component supporting assembly and mounting method of supporting device |
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