CN107976486A - Nuclear power station control rod guide tubes and bundles split pin probe assembly - Google Patents
Nuclear power station control rod guide tubes and bundles split pin probe assembly Download PDFInfo
- Publication number
- CN107976486A CN107976486A CN201711048963.9A CN201711048963A CN107976486A CN 107976486 A CN107976486 A CN 107976486A CN 201711048963 A CN201711048963 A CN 201711048963A CN 107976486 A CN107976486 A CN 107976486A
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- China
- Prior art keywords
- fixed frame
- split pin
- buffer unit
- chip
- nuclear power
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/227—Details, e.g. general constructional or apparatus details related to high pressure, tension or stress conditions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of nuclear power station control rod guide tubes and bundles split pin probe assembly, it includes chip of popping one's head in, chip fixed frame for fixed probe chip, bottom plate and the first Buffer Unit being connected between bottom plate and chip fixed frame, the second Buffer Unit is additionally provided between first Buffer Unit and chip fixed frame, second Buffer Unit includes the middle plate being connected with the first Buffer Unit, the cylinder that is sheathed on plate and the elastic rubber ring for being fixed on inner barrel, the fixation of chip fixed frame is inserted in elastic rubber ring and there are gap between middle plate, probe chip is higher by distance of the height more than the supreme Turbogrid plates lower face in split pin groove bosom of the second Buffer Unit part with chip fixed frame, the distance is compression distance.The present invention can adaptive location error and installation error, ultrasonic probe and split pin contact are constant, are conducive to the repeatability of ultrasonic examination.
Description
Technical field
The present invention relates to nuclear power detection field, more particularly to a kind of nuclear power station control rod guide tubes and bundles split pin probe assembly.
Background technology
Control rod guide tubes and bundles split pin is located in nuclear power plant reactor upper-part in-reactor component, and it is that rod is oriented in order to control that it, which is acted on,
Cylinder provides positioning and lateral support, and can control rod fall important on request when being nuclear power generating sets power adjusting and emergent shutdown
Influence factor.Repeatedly there is split pin failure phenomenon in external nuclear power station, its consequence is embodied in two aspects, one is control rod is led
Misplace to cylinder, and then influence control rod drop time, the second is the opening pin member of fracture is returned as foreign matter into nuclear power station one
Circulated in road, other important equipments can be damaged, influence the integrality of nuclear power generating equipment.It is therefore desirable to control rod guide tubes and bundles opening
Pin implements inservice inspection, to monitor the quality state in its operational process, improves the reliability, security, integrality of nuclear power station.
Inservice inspection generally carries out during nuclear power generating sets overhaul.During overhaul, upper-part in-reactor component component is integrally deposited
It is placed in component pond.To carry out the ultrasonic examination of split pin key area, insertion opening pin that a kind of flat need to be popped one's head in is recessed
In groove, groove in installment state width between 2.696mm~2.896mm, and by probe wafer size limited, probe assembly is wide
Degree is higher in 2.4mm or so, Underwater Navigation required precision.And the opening recessed upper Turbogrid plates bottom surface 37.75mm of pin end, this is right
The observation and positioning of split pin end face bring great difficulty.In addition, nuclear power generating sets 20 years of operation for many years after, the deformation of parts
Split pin deflection to a certain degree may be caused with factors such as build-up tolerances, therefore needs probe assembly that there is certain flexibility, can
Adapt to the situation；Further, since ultrasonic probe and the constant repeatability for being just beneficial to ultrasonic examination of split pin contact, and
Generally require to set pressure detecting and adjusting mechanism to provide this constant pressure, set on the less probe assembly of size
Said structure difficulty is very big.
The content of the invention
Can be adaptive and constant contact pressure can be provided so as to ensureing that detection is repeatable the object of the present invention is to provide a kind of
The nuclear power station control rod guide tubes and bundles split pin probe assembly of property.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of nuclear power station control rod guide tubes and bundles opening
Probe assembly is sold, it includes probe chip, the chip fixed frame for fixing the probe chip, bottom plate and is connected to described
The first Buffer Unit between bottom plate and the chip fixed frame, between first Buffer Unit and the chip fixed frame also
Equipped with the second Buffer Unit, second Buffer Unit include be connected with first Buffer Unit middle plate, be sheathed on institute
State the cylinder on plate and be fixed on the elastic rubber ring of the inner barrel, the chip fixed frame fixation is inserted in described
There are gap, the probe chip and the chip fixed frame in elastic rubber ring and between the middle plate to be higher by described second and delay
The height for rushing components is more than the distance of the supreme Turbogrid plates lower face in split pin groove bosom, which is compression distance.
Optimization, the probe assembly further includes the lid for being covered on the cylinder and being sheathed on the chip fixed frame
Plate.
Optimization, the middle plate lower face has the extending column that extends downwardly and by extending column bottom along extending column
The annular slab to extend radially outwardly, first Buffer Unit include multiple while are arranged in the annular slab and the bottom plate
Lead, be sheathed on each lead and the support spring between the annular slab and the bottom plate, it is described
Lead both ends, which are equipped with, prevents its nut to come off from annular slab and bottom plate.
Optimization, the chip fixed frame bottom has the snap-gauge that extends radially outward, in the elastic rubber ring
Portion offers the through hole of perforation, and the through-hole wall is equipped with the card slot to match with the retainer ring, and the snap-gauge is arranged in institute
State in card slot.
Optimization, the 1~5mm of compression distance.
Further, the snap-gauge is in runway shape, it has two parallel straight flanges and is connected between two straight flanges
Arc-shaped side.
The beneficial effects of the present invention are：The present invention can adaptive location error and in-pile component installation error, probe
Chip and split pin contact are constant, are conducive to the repeatability of ultrasonic examination.
Brief description of the drawings
Fig. 1：The three-dimensional view of probe assembly；
Fig. 2：The sectional view of probe assembly；
Fig. 3：The sectional view of probe assembly；
Fig. 4：After probe assembly is adjacent to split pin groove, probe assembly cover board and upper Turbogrid plates bottom surface distance 3mm.
Embodiment
Shown embodiment is described in detail below the present invention below in conjunction with the accompanying drawings：
As shown in Figure 1, 2, 3, nuclear power station control rod guide tubes and bundles split pin probe assembly includes probe chip 71, for fixing
The probe chip fixed frame 72 of chip 71, bottom plate 78, be connected between the bottom plate 78 and the chip fixed frame 72
First Buffer Unit and the second Buffer Unit between first Buffer Unit and the chip fixed frame 72.
Second Buffer Unit include be connected with first Buffer Unit middle plate 75, be sheathed on the middle plate 75
On cylinder 74, the elastic rubber ring 79 that is fixed on inside the cylinder 74 and be covered on the cylinder 74 and be sheathed on institute
State the cover board 73 on chip fixed frame 72, the chip fixed frame 72 fix be inserted in the elastic rubber ring 79 and with it is described
There are gap, the probe chip 71 between middle plate 75 to be higher by the height of the second Buffer Unit part with the chip fixed frame 72
Degree is more than the distance of supreme 722 lower face of Turbogrid plates in 721 groove bosom of split pin, which is compression distance, the compression
1~5mm of distance.72 bottom of chip fixed frame has the snap-gauge 716 extended radially outward, the elastic rubber ring 79
Middle part offers the through hole of perforation, and the through-hole wall is equipped with the card slot to match with the snap-gauge 716, and the snap-gauge 716 blocks
In the card slot.The snap-gauge is in runway shape, it has two parallel straight flanges and the arc being connected between two straight flanges
Shape side.When probe chip 71 needs adaptability rotation to make, elastic rubber ring 79 is completed with 72 rotational deformation of chip fixed frame
Resetted after detection.
75 lower face of middle plate has the extending column 714 that extends downwardly and by 714 bottom of extending column along extending column
714 annular slab 715 to extend radially outwardly, first Buffer Unit include multiple while are arranged in the annular slab 715
With the lead 76 in the bottom plate 78, be sheathed on each lead 76 and positioned at the annular slab 715 and the bottom
Support spring 77 between plate 78,76 both ends of lead, which are equipped with, prevents its spiral shell to come off from annular slab 715 and bottom plate 78
Cap 717.
As shown in figure 4, when probe assembly tip contact 721 end face of split pin, if any certain deviations or installation
Error, probe assembly can lean on elastic rubber ring 79 and support spring 77 to deform upon adjust automatically posture；When probe assembly top
After termination contacts 721 groove top of split pin, (mechanism such as cylinder can be real for the vertical lifting mechanism that driving probe moves up and down
Existing, non-invention emphasis, this will not be repeated here) continue to rise, until cover board 73 is contacted with upper Turbogrid plates 722, support spring 77
Start to compress with elastic rubber ring 79.At this time, probe assembly and 721 contact of split pin are support spring 77 and elastic rubber
Circle 79 produces the elastic force of the deformation of 1~5mm altogether, and remains unchanged, and in the present embodiment, the coefficient of elasticity of rubber is 10N/
Mm, by adjusting gel content and hardness to realize, pop one's head in the most preferably 30N that is under pressure, therefore optimal during deformation 3mm.This probe assembly
With certain flexibility, adaptive location error and installation error, and can be achieved with ultrasound without the equipment of additional detected pressure
Probe is constant within the required range with 721 contact of split pin, is conducive to the repeatability of ultrasonic examination.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that spirit is made, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of nuclear power station control rod guide tubes and bundles split pin probe assembly, it includes probe chip, for fixing the probe crystalline substance
Chip fixed frame, bottom plate and the first Buffer Unit being connected between the bottom plate and the chip fixed frame of piece, it is special
Sign is：The second Buffer Unit, the second buffering group are additionally provided between first Buffer Unit and the chip fixed frame
Part is including the middle plate being connected with first Buffer Unit, the cylinder being sheathed on the middle plate and is fixed on the cylinder
Internal elastic rubber ring, between the chip fixed frame fixation is inserted in the elastic rubber ring and exists between the middle plate
Gap, the height that the probe chip is higher by the second Buffer Unit part with the chip fixed frame are more than split pin groove most
The distance of the supreme Turbogrid plates lower face in depths, the distance are compression distance.
2. nuclear power station control rod guide tubes and bundles split pin probe assembly according to claim 1, it is characterised in that：The probe
Component further includes the cover board for being covered on the cylinder and being sheathed on the chip fixed frame.
3. nuclear power station control rod guide tubes and bundles split pin probe assembly according to claim 1, it is characterised in that：The middle plate
Lower face is with the extending column extended downwardly and by the annular slab that extends radially outwardly of the extending column bottom along extending column, institute
State the first Buffer Unit include lead that is multiple while being arranged in the annular slab and the bottom plate, be sheathed on it is each described
Support spring on lead and between the annular slab and the bottom plate, the lead both ends, which are equipped with, prevents it from ring
The nut to come off on shape plate and bottom plate.
4. nuclear power station control rod guide tubes and bundles split pin probe assembly according to claim 1, it is characterised in that：The chip
Fixed frame bottom has the snap-gauge extended radially outward, and the through hole of perforation is offered in the middle part of the elastic rubber ring, described
Through-hole wall is equipped with the card slot to match with the snap-gauge, and the snap-gauge is arranged in the card slot.
5. nuclear power station control rod guide tubes and bundles split pin probe assembly according to claim 1, it is characterised in that：The compression
1~5mm of distance.
6. nuclear power station control rod guide tubes and bundles split pin probe assembly according to claim 4, it is characterised in that：The snap-gauge
In runway shape, it has two parallel straight flanges and the arc-shaped side being connected between two straight flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048963.9A CN107976486B (en) | 2017-10-31 | 2017-10-31 | Split pin probe assembly of nuclear power station control rod guide cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048963.9A CN107976486B (en) | 2017-10-31 | 2017-10-31 | Split pin probe assembly of nuclear power station control rod guide cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107976486A true CN107976486A (en) | 2018-05-01 |
| CN107976486B CN107976486B (en) | 2020-07-07 |
Family
ID=62012964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711048963.9A Active CN107976486B (en) | 2017-10-31 | 2017-10-31 | Split pin probe assembly of nuclear power station control rod guide cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107976486B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824008A (en) * | 2019-11-19 | 2020-02-21 | 中广核检测技术有限公司 | Ultrasonic detection probe and method for cotter pin fastener |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053984A3 (en) * | 1980-12-09 | 1984-03-28 | Paul Thomé | Method and apparatus for the automatic control of the integrity of assembling welds |
| CN201867394U (en) * | 2010-11-18 | 2011-06-15 | 中广核检测技术有限公司 | Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station |
| CN102903407A (en) * | 2012-10-15 | 2013-01-30 | 中广核检测技术有限公司 | Flexible eddy current testing probe for heat transfer pipe of steam generator of nuclear power plant |
| CN103440885A (en) * | 2013-08-28 | 2013-12-11 | 中国核动力研究设计院 | Integral-dismounting sealing piece as well as sealing structure for detector and reaction pile sealing container |
| KR20150001861A (en) * | 2013-06-21 | 2015-01-07 | 성균관대학교산학협력단 | Apparatus for detecting water immersion ultrasonic flaw |
| CN204926807U (en) * | 2015-09-25 | 2015-12-30 | 苏州热工研究院有限公司 | Damaged excellent for location detection ultrasonic probe of nuclear power station fuel assembly |
| CN105806957A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic vortex combined probe structure for checking inner wall and end face of open-ended small-diameter tube |
| CN106328229A (en) * | 2016-09-30 | 2017-01-11 | 中广核检测技术有限公司 | Special air claw for heat transfer pipe plate climbing equipment of steam generator |
-
2017
- 2017-10-31 CN CN201711048963.9A patent/CN107976486B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053984A3 (en) * | 1980-12-09 | 1984-03-28 | Paul Thomé | Method and apparatus for the automatic control of the integrity of assembling welds |
| CN201867394U (en) * | 2010-11-18 | 2011-06-15 | 中广核检测技术有限公司 | Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station |
| CN102903407A (en) * | 2012-10-15 | 2013-01-30 | 中广核检测技术有限公司 | Flexible eddy current testing probe for heat transfer pipe of steam generator of nuclear power plant |
| KR20150001861A (en) * | 2013-06-21 | 2015-01-07 | 성균관대학교산학협력단 | Apparatus for detecting water immersion ultrasonic flaw |
| CN103440885A (en) * | 2013-08-28 | 2013-12-11 | 中国核动力研究设计院 | Integral-dismounting sealing piece as well as sealing structure for detector and reaction pile sealing container |
| CN105806957A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic vortex combined probe structure for checking inner wall and end face of open-ended small-diameter tube |
| CN204926807U (en) * | 2015-09-25 | 2015-12-30 | 苏州热工研究院有限公司 | Damaged excellent for location detection ultrasonic probe of nuclear power station fuel assembly |
| CN106328229A (en) * | 2016-09-30 | 2017-01-11 | 中广核检测技术有限公司 | Special air claw for heat transfer pipe plate climbing equipment of steam generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824008A (en) * | 2019-11-19 | 2020-02-21 | 中广核检测技术有限公司 | Ultrasonic detection probe and method for cotter pin fastener |
| CN110824008B (en) * | 2019-11-19 | 2022-05-24 | 中广核检测技术有限公司 | Ultrasonic detection probe and detection method for control rod guide cylinder cotter pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107976486B (en) | 2020-07-07 |
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