CN108269628A - A kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly - Google Patents
A kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly Download PDFInfo
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- CN108269628A CN108269628A CN201611261082.0A CN201611261082A CN108269628A CN 108269628 A CN108269628 A CN 108269628A CN 201611261082 A CN201611261082 A CN 201611261082A CN 108269628 A CN108269628 A CN 108269628A
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- probe
- component
- fuel assembly
- emergency escape
- axis
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
-
- 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 present invention relates to fuel assembly ultrasound fields, specifically disclose a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly.The top guidance set that fuel assembly to be checked is used to support in the device is mounted on the bottom plate of slab construction, on the bottom plate of side that probe and its driving mechanism and emergency escape component are mounted on top guidance set, and the probe component in probe and its driving mechanism can be moved along horizontal X axis left and right directions and horizontal Y-axis front-rear direction, for all standing inspection to the fuel rod in fuel assembly；Emergency escape component is fixedly connected with probe and its driving mechanism, under emergency conditions, probe and its driving mechanism to be detached to the range for removing fuel assembly on the guidance set of top.The device can realize positioning of the fuel assembly relative to check device；All standing ultrasonic examination to arranged in squares fuel rod；It avoids damaging fuel rod during two axle movement by torque force limiting device, probe component telescopic cylinder.
Description
Technical field
The invention belongs to fuel assembly ultrasound fields, and in particular to a kind of square arrangement damaged fuel assembly
Ultrasonic inspection apparatus.
Background technology
In pressurized-water reactor nuclear power plant, nuclear fuel is installed in the thin-walled cladding tubes sealed by end plug, and cladding materials is closed for zirconium
End plug is welded on the both ends of cladding tubes using the welding method of electron beam, piezoresistive weldering or argon tungsten-arc welding by gold, then will
Several fuel rods fit together, and form nuclear fuel assembly.Nuclear fuel assembly is generated by the fission reaction in reactor core
Thermal energy.It is an extremely important component of nuclear power station, is first of barrier for preventing nuclear fuel from leaking.
M310, ACPR1000 and CPR1000 pressurized-water reactor nuclear power plant in China use AFA-3G type fuel assemblies, and fuel rod is pressed
17x17 is arranged.Fuel assembly is made of fuel rod, bottom nozzle and upper tube socket, guide pipe and gauge pipe and a variety of screen works.Often
A fuel assembly contains 289 stick positions, is arranged according to the square grid of 17x17, respectively by 264 fuel rods, 24 controls
Stick guide pipe and 1 neutron flux measurement pipe.Fuel rod includes fuel pellet, fuel can, holddown spring, upper end plug and lower end
Several part compositions such as plug.Due to reactor core complexity, severe operating condition and high radioactivity, fuel assembly packet can be caused
The variation of shell material performance, if involucrum inherently there are certain defect, the commissure particularly at end plug and cladding tubes, just
Defect expanding is probably generated in the process of running, eventually leads to nuclear fuel assembly breakage.Fuel assembly breakage will directly be led
Radioactive substance is caused to enter primary Ioops, entire reactor building environmental dose and radioactive contamination level is caused to be increased sharply, very
To shutdown, strong influence unit safety, stable operation.By implementing ultrasonic examination to fuel assembly, burst slug is determined
The stick position of burst slug stick in component and component, and damaged fuel assembly hermetically sealed can is sealed up for safekeeping or burst slug stick is carried out with
It changes, so as to which radioactive substance be avoided to continue into nuclear reactor primary Ioops.
When ultrasonic inspection apparatus checks, ultrasonic probe is for every fuel rod transmitting and receives ultrasonic signal (specially plate
Wave), when ultrasonic signal passes through tube wall, when the inner wall of fuel rod has water, ultrasonic signal can significantly decay.Therefore, can pass through
Judge the how many fuel rods to distinguish the good fuel rod of watertightness with reveal of attenuation of the ultrasonic signal received.The combustion revealed
The echo-signal of charge bar can be less than the good fuel rod of watertightness.
Invention content
The purpose of the present invention is to provide a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly, can be real
Ultrasonic examination now is implemented to each fuel rod of the fuel assembly of square arrangement, so that it is determined that whether fuel assembly is damaged and damaged
The stick position of burst slug stick in component.
Technical scheme is as follows：A kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly, the inspection
Device includes bottom plate, top guidance set, probe and its driving mechanism, emergency escape component, rack and fuel assembly and holds out against
Mechanism, wherein, be used to support fuel assembly to be checked top guidance set be mounted on slab construction bottom plate on, probe and its
On the bottom plate of side that driving mechanism and emergency escape component are mounted on top guidance set, and in probe and its driving mechanism
Probe component can be moved along horizontal X axis left and right directions and horizontal Y-axis front-rear direction, for the fuel rod in fuel assembly
All standing inspection；Emergency escape component is fixedly connected with probe and its driving mechanism, under emergency conditions, will probe and
Its driving mechanism is detached from the range for removing fuel assembly on the guidance set of top.
Fuel assembly jacking mechanism there are two being set on the bottom plate of both sides around the top guidance set, and two fuel
Component jacking mechanism is in 90 degree of arranged at right angles；Wherein, fuel assembly jacking mechanism include hold out against cylinder mounting base, hold out against cylinder with
And front end withstanding tight block, cylinder is held out against by holding out against cylinder mounting base on bottom plate, and close to the top of top guidance set
Tight cylinder head portions are equipped with front end withstanding tight block；After fuel assembly imports top guidance set, the cylinder rod for holding out against cylinder stretches out, and leads to
It crosses front end withstanding tight block and compresses fuel assembly bottom nozzle, so as to which fuel assembly be fixed.
The bottom plate of the top guidance set side is equipped with calibration component switching mechanism, is installed including oscillating cylinder
Seat, oscillating cylinder and calibration component, wherein, oscillating cylinder is mounted on by oscillating cylinder mounting base on bottom plate, oscillating cylinder
On calibration component is installed, by oscillating cylinder drive calibration component put to or remove top guidance set.
Rack is additionally provided on the bottom plate, and video monitoring system and terminal box are equipped in rack, wherein, video prison
Viewing system can carry out video monitoring to top guidance set；The video monitoring system uses radiation hardness camera；The wiring
Box is probe and its driving mechanism and other power electrical apparatus.
The probe and its driving mechanism include probe component, X-axis driving part and Y-axis driving part, wherein, it visits
Head part is connected with X-axis driving part and Y-axis driving part, is realized and visited by X-axis driving part and Y-axis driving part
Head part is whole to be run along X-axis and two axis of Y-axis；The probe component includes probe component fixed seat, probe component sliding seat, visits
Head part telescopic cylinder and ultrasonic inspection probe, wherein, it is mounted with the probe component fixed seat and Y of ultrasonic inspection probe
Y-axis driving nut in axis driving part is fixedly connected, and under the action of Y-axis driving part, realizes ultrasonic inspection probe in Y
It is moved forward or back in axis direction；Probe component sliding seat is fixedly connected with probe component telescopic cylinder, by the way that air pressure is adjusted
Probe component telescopic cylinder can drive probe component sliding seat to be moved forward and backward relative to probe component fixed seat is opposite.
The emergency escape component include emergency escape component guide frame, emergency escape pin assemblies, rope wheel component with
And cable loop, wherein, emergency escape component guide frame include be mounted on bottom plate on linear axis and linear bearing, probe and its
Driving mechanism integral installation passes through the rope installed on emergency escape component guide frame on emergency escape component guide frame
Wheel assembly and cable loop pull probe and its driving mechanism to be retreated along Y direction；On emergency escape component guide frame also
Emergency escape pin assemblies are installed, for limiting probe on emergency escape component guide frame and its driving mechanism and bottom plate
It is mobile.
The emergency escape pin assemblies include emergency escape pin mount, emergency escape axis pin, emergent bar of pulling pin, meet an urgent need
Compressed spring and emergent extension spring, wherein, emergent bar of pulling pin is oriented to by emergent extension spring with emergency escape component to be tied
Emergency escape pin mount on structure is connected, and the emergent bar other end of pulling pin is sleeved on emergency escape axis pin and by emergency escape pin
The emergent compressed spring being cased on axis is pressed in emergency escape pin groove, and is equipped in the pin hole of emergency escape pin rod upper end
Pin, and the pin is made to be connected with rope wheel component；Emergency escape pin rod is inserted into bottom plate, by probe and its driving mechanism and bottom plate
It is relatively fixed；In case of emergency, cable loop is pulled by lower part buckle stock, cable loop pulls emergent pull pin through rope wheel component
Bar extracts emergency escape axis pin, and under a stretching force from bottom plate, realizes that probe and its whole of driving part retreat, from
And be detached from probe component from fuel assembly, ensure the safety of fuel assembly.
The X-axis driving part and Y-axis driving part are using leading screw, nut type of drive, using linear axis and directly
Spool holds realization and is oriented to, and in the gear drive of motor driving leading screw rotation, is equipped with torque force limiting device, so as to limit left and right
The driving force of horizontal direction X-axis and front-rear direction Y-axis avoids ultrasonic monitoring probe from damaging fuel rod.
Lower part guidance set is additionally provided with below the bottom plate, including 4 straight pins and connecting plate, wherein, straight pin
One end is fixedly connected with bottom plate, and cylinder pin end connects to form rigid structure by connecting plate the other end two-by-two, and available for pair
Fuel stores the positioning of screen work.
The remarkable result of the present invention is：A kind of ultrasonic examination of square arrangement damaged fuel assembly of the present invention
Device has the following advantages：1) realize that damaged fuel assembly check device stores lattice in fuel by lower part guidance set, bottom plate
Positioning, the support of frame；2) fuel assembly is imported in damaged fuel assembly check device by top guidance set, fuel assembly
Jacking mechanism is fixed in the guidance set of top by fuel assembly, realizes positioning of the fuel assembly relative to check device；3) it visits
Head and its driving mechanism driving probe component two axle movement in fuel assembly, realize all standing to arranged in squares fuel rod
Ultrasonic examination；It avoids damaging fuel rod during two axle movement by torque force limiting device, probe component telescopic cylinder；4) going out
Existing electric fault or it is other in emergency circumstances, pass through emergency escape component and realize fuel assembly and damaged fuel assembly ultrasonic examination
The disengaging of device ensures the safety of fuel assembly.
Description of the drawings
Fig. 1 is a kind of ultrasonic inspection apparatus front view of square arrangement damaged fuel assembly of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is probe and its structure diagram of driving mechanism in Fig. 1；
Fig. 4 is the structure diagram of probe component in Fig. 1；
Fig. 5 is emergency escape modular construction schematic diagram in Fig. 1；
Fig. 6 is emergency escape pin assemblies structure diagram in Fig. 5；
Fig. 7 is that component switching mechanism structure diagram is demarcated in Fig. 1；
In figure：1st, bottom plate；2nd, top guidance set；3rd, probe and its driving mechanism；4th, video monitoring system；5th, wiring
Box；6th, emergency escape component；7th, rack；8th, component switching mechanism is demarcated；9th, lower part guidance set；10th, fuel assembly holds out against machine
Structure；11st, probe component；12nd, X-axis driving part；13rd, Y-axis driving part；14th, probe component fixed seat；15th, probe component is slided
Dynamic seat；16th, probe component telescopic cylinder；17th, ultrasonic inspection probe；18th, emergency escape component guide frame；19th, emergency escape
Pin assemblies；20th, rope wheel component；21st, cable loop；22nd, emergency escape pin mount；23rd, emergency escape axis pin；24th, it meets an urgent need and pulls pin
Bar；25th, emergent compressed spring；26th, emergent extension spring；27th, oscillating cylinder mounting base；28th, oscillating cylinder；29th, component is demarcated；
30th, straight pin；31st, connecting plate；32nd, cylinder mounting base is held out against；33rd, cylinder is held out against；34th, front end withstanding tight block.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail the present invention.
As shown in Figure 1 and Figure 2, a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly, including bottom plate 1, top
Guidance set 2, probe and its driving mechanism 3, emergency escape component 6, rack 7 and fuel assembly jacking mechanism 10, wherein, combustion
Material component jacking mechanism 10, top guidance set 2, probe and its driving mechanism 3 and emergency escape component 6 are fixed on tablet knot
On the bottom plate 1 of structure, guidance set 2 size in top is slightly larger than fuel assembly square dimensions to be checked, for fuel assembly
Bottom nozzle provides support, and determines height of the fuel assembly in ultrasonic inspection apparatus；Fuel assembly jacking mechanism 10 is mounted on
Near top guidance set 2, for fuel assembly being fixed support；Probe and its driving mechanism 3 are mounted on upper guide
To 2 side of structure, and the probe component 11 in probe and its driving mechanism 3 can be moved along horizontal X axis direction and front and rear Y direction
It is dynamic, make probe component 11 that can check the fuel rod in fuel assembly；Emergency escape component 6 is fixed on bottom plate 1, and with
Probe and its driving mechanism 3 are connected, and under special circumstances, and probe and its driving mechanism 3 are driven by emergency escape component 6
In probe component 11 leave fuel assembly range；Rack 7 is also equipped on bottom plate 1, video monitor is installed in rack 7
System 4 is used to be monitored the operation of probe and its driving mechanism 3；Terminal box 5 is also equipped in rack 7, for for spy
Head and its driving mechanism 3 and other power electrical apparatus；Calibration component is also equipped on bottom plate 1 near upper guide structure 2
Switching mechanism 8, for the underwater calibration to damaged fuel assembly check device；Below bottom plate 1, and with upper guide structure 2
The corresponding place in position is equipped with lower part guidance set 9, and during for check device work, be inserted into fuel storage screen work into
Row positioning；
As shown in Figure 3, Figure 4, probe and its driving mechanism 3 include probe component 11, X-axis driving part 12 and Y-axis drive
Dynamic component 13, wherein, probe component 11 is connected with X-axis driving part 12 and Y-axis driving part 13, passes through X-axis driving portion
Part 12 and Y-axis driving part 13 are realized that probe component 11 is whole and are run along X-axis and two axis of Y-axis；X-axis driving part 12 and Y
Axis driving part 13 is realized using linear axis and linear bearing and is oriented to, and drive silk in motor using leading screw, nut type of drive
In the gear drive of thick stick rotation, torque force limiting device is installed, so as to limit the drive of left and right horizontal direction X-axis and front-rear direction Y-axis
Power avoids ultrasonic monitoring probe from damaging fuel rod；Probe component 11 includes probe component fixed seat 14, probe component
Sliding seat 15, probe component telescopic cylinder 16 and ultrasonic inspection probe 17, wherein, it is mounted with ultrasonic inspection probe 17
Probe component fixed seat 14 is fixedly connected, and with the Y-axis driving nut in Y-axis driving part 13 in the work of Y-axis driving part 13
Under, realize that ultrasonic inspection probe 17 moves forward or back in the Y-axis direction；Probe component sliding seat 15 and probe component stretch gas
Cylinder 16 is fixedly connected, and probe component sliding seat 15 can be driven relative to probe component fixed seat by probe component telescopic cylinder 16
14 opposite move forward and backward, and can be by adjusting the air pressure of probe component telescopic cylinder 16, when realizing that ultrasonic inspection probe 17 advances
Pressing force adjusts, and excessive pressing force is avoided to damage fuel rod；
As shown in Figure 5, Figure 6, emergency escape component 6 includes emergency escape component guide frame 18, emergency escape pin assemblies
19th, rope wheel component 20 and cable loop 21, wherein, emergency escape component guide frame 18 includes the straight line being mounted on bottom plate 1
Axis and linear bearing, probe and its 3 integral installation of driving mechanism take off on emergency escape component guide frame 18, and by emergent
From the rope wheel component 20 and cable loop 21 installed on component guide frame 18, probe and its driving mechanism 3 are pulled along Y direction
It retreats；Emergency escape pin assemblies 19 are also equipped on emergency escape component guide frame 18, for limiting emergency escape component
The movement of probe and its driving mechanism 3 on guide frame 18, wherein, emergency escape pin assemblies 19 are installed including emergency escape pin
Seat 22, emergency escape axis pin 23, emergent bar 24 of pulling pin, emergent compressed spring 25 and emergent extension spring 26, wherein, it is emergent to pull out
Pin rod 24 is connected by emergent extension spring 26 with the emergency escape pin mount 22 on emergency escape component guide frame 18,
Emergent 24 other end of bar of pulling pin is sleeved on the emergent compressed spring that will be cased on emergency escape axis pin 23 and on emergency escape axis pin 23
25 are pressed in 23 slot of emergency escape axis pin, and are equipped with pin in 24 upper end pin hole of emergency escape pin rod, and make the pin and rope
Wheel assembly 20 is connected；Emergency escape pin rod 24 is inserted into bottom plate 1, and probe and its driving mechanism 3 and bottom plate 1 is relatively solid
It is fixed；In case of emergency, cable loop 21 is pulled by lower part buckle stock, cable loop 21 pulls emergent pull pin through rope wheel component 20
Bar 24 extracts emergency escape axis pin 23, and under a stretching force from bottom plate 1, after the entirety for realizing probe and its driving part
It moves back, so as to which probe component 11 be detached from from fuel assembly, ensures the safety of fuel assembly；
As shown in fig. 7, calibration component switching mechanism 8 is mounted on top guidance set 2 against probe and its 3 side of driving mechanism
To leftward position on, calibration component switching mechanism includes oscillating cylinder mounting base 27, oscillating cylinder 28 and calibration component 29,
Wherein, oscillating cylinder 28 is mounted on by oscillating cylinder mounting base 27 on bottom plate 1, and calibration component is equipped on oscillating cylinder 28
29, when being demarcated under water, put by oscillating cylinder 28 by component 29 is demarcated to top guidance set 2, probe component 11
Under X-axis driving part 12 and Y-axis driving part 13 or so, calibration component 29 is detected；It is carried out to combustion gas component
During inspection, using oscillating cylinder 28, by calibration component 29 along being put counterclockwise from top to 2 position of top guidance set is deviateed, protect
Card does not influence the normal work of probe component 11, top guidance set 2；
The fuel assembly jacking mechanism 10 there are two the position settings of two, on the right side of guidance set 2 and front on top, and two
Fuel assembly jacking mechanism is in 90 degree of arranged at right angles；Wherein, fuel assembly jacking mechanism 10 includes holding out against cylinder mounting base 32, top
Tight cylinder 33 and front end withstanding tight block 34 hold out against cylinder 33 by holding out against cylinder mounting base 32 on bottom plate 1, and close
33 end of cylinder that holds out against of top guidance set 2 is equipped with front end withstanding tight block 34；Top guidance set 2 is imported in fuel assembly
Afterwards, the stretching of 33 cylinder rod of cylinder is held out against, fuel assembly bottom nozzle is compressed by front end withstanding tight block 34, so as to which fuel assembly be consolidated
It is fixed；
The lower part guidance set 9 installed below bottom plate 1 includes 4 straight pins 30 and connecting plate 31, wherein, straight pin 30
One end is fixedly connected with bottom plate, and straight pin 30 is formed rigid structure by the other end by connecting plate；When implementing to check, lower part
Guiding parts 9 is inserted into fuel storage screen work, realizes that damaged fuel assembly supersonic detection device is determined in fuel stores screen work
Position.
Video monitoring system 4 can be oriented to components to top and carry out video monitoring, realize that fuel assembly imports damaged combustion
Video monitoring when material component inspection device, ultrasonic inspection probe enter fuel assembly avoids improper operation to fuel assembly, fuel
Stick damages.Video monitoring system is nearer apart from fuel assembly, therefore irradiation dose is larger, need to use the camera of resistance to irradiation.
Terminal box 5 realizes that the transfer of X-axis and Y-axis driving part motor, ultrasonic inspection probe and each pneumatic component connects
It connects, realizes that damaged fuel assembly ultrasonic inspection apparatus controls cable to separate with it, avoid control cable by damaged fuel assembly
Ultrasonic inspection apparatus pickup.
Claims (9)
1. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly, it is characterised in that：The check device includes bottom plate
(1), top guidance set (2), probe and its driving mechanism (3), emergency escape component (6), rack (7) and fuel assembly top
Tight mechanism (10), wherein, it is used to support bottom plate of the top guidance set (2) mounted on slab construction of fuel assembly to be checked
(1) on, probe and its driving mechanism (3) and emergency escape component (6) are mounted on the bottom plate of the side of top guidance set (2)
(1) on, and pop one's head in and its driving mechanism (3) in probe component (11) can be along before and after horizontal X axis left and right directions and horizontal Y-axis
Direction is moved, for all standing inspection to the fuel rod in fuel assembly；Emergency escape component (6) and probe and its driving machine
Structure (3) is fixedly connected, under emergency conditions, probe and its driving mechanism (3) being detached from and removed on top guidance set (2)
The range of fuel assembly.
2. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
It is set on the bottom plate (1) of described top guidance set (2) the surrounding both sides there are two fuel assembly jacking mechanism (10), and two fire
Expect component jacking mechanism (10) in 90 degree of arranged at right angles；Wherein, fuel assembly jacking mechanism (10) is including holding out against cylinder mounting base
(32), cylinder (33) and front end withstanding tight block (34) are held out against, cylinder (33) is held out against and is mounted on by holding out against cylinder mounting base (32)
On bottom plate (1), and cylinder (33) end is being held out against equipped with front end withstanding tight block (34) close to top guidance set (2)；In fuel
After component imports top guidance set (2), the stretching of cylinder (33) cylinder rod is held out against, fuel stack is compressed by front end withstanding tight block (34)
Part bottom nozzle, so as to which fuel assembly be fixed.
3. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
The bottom plate (1) of described top guidance set (2) side is equipped with calibration component switching mechanism (8), pacifies including oscillating cylinder
Seat (27), oscillating cylinder (28) and calibration component (29) are filled, wherein, oscillating cylinder (28) passes through oscillating cylinder mounting base (27)
On bottom plate (1), calibration component (29) is installed on oscillating cylinder (28), calibration component is driven by oscillating cylinder (28)
(29) put to or remove top guidance set (2).
4. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
Rack (7) is additionally provided on the bottom plate (1), and video monitoring system (4) and terminal box (5) are equipped in rack (7),
In, video monitoring system (4) can carry out video monitoring to top guidance set (2)；The video monitoring system uses radiation hardness
Camera；The terminal box (5) is probe and its driving mechanism (3) and other power electrical apparatus.
5. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
The probe and its driving mechanism (3) include probe component (11), X-axis driving part (12) and Y-axis driving part (13),
Wherein, probe component (11) is connected with X-axis driving part (12) and Y-axis driving part (13), passes through X-axis driving part
(12) and Y-axis driving part (13) is realized that probe component (11) is whole and is run along X-axis and two axis of Y-axis；The probe component
(11) including probe component fixed seat (14), probe component sliding seat (15), probe component telescopic cylinder (16) and ultrasound inspection
Probing head (17), wherein, it is mounted with the probe component fixed seat (14) of ultrasonic inspection probe (17) and Y-axis driving part
(13) the Y-axis driving nut in is fixedly connected, and under the action of Y-axis driving part (13), realizes ultrasonic inspection probe (17)
It moves forward or back in the Y-axis direction；Probe component sliding seat (15) is fixedly connected with probe component telescopic cylinder (16), by can
Probe component sliding seat (15) can be driven relative to probe component fixed seat by adjusting the probe component telescopic cylinder (16) of air pressure
(14) it is opposite to move forward and backward.
6. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
The emergency escape component (6) includes emergency escape component guide frame (18), emergency escape pin assemblies (19), rope wheel component
(20) and cable loop (21), wherein, emergency escape component guide frame (18) including the linear axis that is mounted on bottom plate (1) and
Linear bearing, probe and its driving mechanism (3) integral installation take off on emergency escape component guide frame (18), and by emergent
From the rope wheel component (20) and cable loop (21) installed on component guide frame (18), probe and its driving mechanism (3) are pulled
It is retreated along Y direction；Emergency escape pin assemblies (19) are also equipped on emergency escape component guide frame (18), for limiting
The movement of probe and its driving mechanism (3) and bottom plate (1) on emergency escape component guide frame (18).
7. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 6, it is characterised in that：
The emergency escape pin assemblies (19) include emergency escape pin mount (22), emergency escape axis pin (23), emergent bar of pulling pin
(24), emergent compressed spring (25) and emergent extension spring (26), wherein, emergent bar (24) of pulling pin passes through extension spring of meeting an urgent need
(26) it is connected with the emergency escape pin mount (22) on emergency escape component guide frame (18), emergent bar (24) of pulling pin is another
One end is sleeved on emergency escape axis pin (23) and is pressed on the emergent compressed spring (25) being cased on emergency escape axis pin (23)
In emergency escape axis pin (23) slot, and pin is installed, and make the pin and pulley set in the pin hole of emergency escape pin rod (24) upper end
Part (20) is connected；Emergency escape pin rod (24) is inserted into bottom plate (1), by probe and its driving mechanism (3) and bottom plate (1) phase
To fixation；In case of emergency, cable loop (21) is pulled by lower part buckle stock, cable loop (21) is drawn through rope wheel component (20)
Dynamic emergent bar (24) of pulling pin extracts emergency escape axis pin (23), and under a stretching force from bottom plate (1), realize probe and its
The whole of driving part (3) retreats, and so as to which probe component (11) be detached from from fuel assembly, ensures the safety of fuel assembly.
8. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 5, it is characterised in that：
The X-axis driving part (12) and Y-axis driving part (13) are using leading screw, nut type of drive, using linear axis and directly
Spool holds realization and is oriented to, and in the gear drive of motor driving leading screw rotation, is equipped with torque force limiting device, so as to limit left and right
The driving force of horizontal direction X-axis and front-rear direction Y-axis avoids ultrasonic monitoring probe from damaging fuel rod.
9. a kind of ultrasonic inspection apparatus of square arrangement damaged fuel assembly according to claim 1, it is characterised in that：
Lower part guidance set (9) is additionally provided with below the bottom plate (1), including 4 straight pins (30) and connecting plate (31), wherein,
Straight pin (30) one end is fixedly connected with bottom plate (1), and straight pin (30) end connects shape to the other end by connecting plate (31) two-by-two
Into rigid structure, and available for the positioning to fuel storage screen work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261082.0A CN108269628B (en) | 2016-12-30 | 2016-12-30 | Ultrasonic inspection device for square arranged damaged fuel assemblies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261082.0A CN108269628B (en) | 2016-12-30 | 2016-12-30 | Ultrasonic inspection device for square arranged damaged fuel assemblies |
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| Publication Number | Publication Date |
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| CN108269628A true CN108269628A (en) | 2018-07-10 |
| CN108269628B CN108269628B (en) | 2023-10-20 |
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| CN108269628B (en) | 2023-10-20 |
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