CN101916598B - Multifunctional inspection equipment of nuclear reactor pressure vessel nozzle - Google Patents
Multifunctional inspection equipment of nuclear reactor pressure vessel nozzle Download PDFInfo
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- CN101916598B CN101916598B CN2010102568124A CN201010256812A CN101916598B CN 101916598 B CN101916598 B CN 101916598B CN 2010102568124 A CN2010102568124 A CN 2010102568124A CN 201010256812 A CN201010256812 A CN 201010256812A CN 101916598 B CN101916598 B CN 101916598B
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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
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Abstract
The invention relates to a multifunctional inspection equipment of a nuclear reactor pressure vessel nozzle, comprising a bracket body, a scanning device and movable supporting legs, wherein the scanning device comprises a fixed disk, a rotating disk, ultrasonic probe racks and a camera arranged on the rotating disk, the rotating disk is coaxial to the fixed disk and is connected with the fixed disk in a rotating mode, the ultrasonic probe racks are installed on the rotating disk and are distributed along the circumference of the rotating disk; the movable supporting legs are dismountablely arranged on different positions of the bracket body according to the position to be inspected of the nozzle so as to realize ultrasonic inspection of the safe end and nozzle connection welding line, the safe end and main pipeline connection welding line and nozzle and barrel welding line; the camera simultaneously collects the video inspection information of the inner surface of the safe end area; when the welding line of the nozzle and the barrel is inspected, the camera simultaneously obtains the video inspection information of the inner surface of the nozzle section area; the video inspection information collected by the camera is combined with the scanning result of the ultrasonic probe to ensure the accuracy and the reliability of the scanning result and realize the multifunctional inspection of the equipment.
Description
Technical field
The present invention relates to the checkout equipment field of nuclear power plant reactor pressure vessel, particularly ultrasonic, video check equipment to pressure vessel water delivering orifice and water inlet ozzle position at labour/preservice inspection.
Background technology
Nuclear reactor pressure container is one of of paramount importance parts of nuclear power station, is used for fixing, supports and contain reactor core and all in-pile components, is nuclear power plant's unique non-exchange large component in the whole phase in longevity.The quality of nuclear reactor pressure container is to guarantee that Nuclear Power System is normal, the key of safe operation.Nuclear reactor pressure container shown in Figure 13; Its main body is a cylinder 101; Cylinder 101 tops are connected with semisphere upper cover (not shown), flange 102 through bolt assembly; Cylinder 101 bottoms are welded with semisphere low head 103, and spaced radial is welded with a plurality of water inlet ozzles 104 and water outlet ozzle 105 on the cylinder cylindrical shell, on water inlet ozzle 104 and water outlet ozzle 105, are welded with a safe end 106 respectively; Safe end 106 welds with trunk line 107 mutually, and whole ozzle and the built-up welding of safe end inside surface have the thick stainless steel weld overlays of the about 5mm of one deck.Quality for the definite kernel reactor pressure vessel; In the inspection specification and outline of nuclear power plant and nuclear power unit; Each weld seam on the pressure vessel and other position have been proposed the Compulsory Feature of Non-Destructive Testing, and specified respectively and before putting into operation with after moving the certain hour interval, pressure vessel is implemented the preceding and inservice inspection of labour.Result with inservice inspection before the labour provides extremely important foundation for the state of analyzing pressure vessel.
Non-Destructive Testing to each ozzle place of nuclear reactor pressure container comprises: the weld seam detection (being designated 1002 positions among Figure 13) of the weld seam detection of ozzle outer end and safe end junction (as being designated 1001 positions among Figure 13), safe end and trunk line junction, ozzle and cylindrical shell attachment weld detect the video check of (being designated 1003 position among the figure), ozzle and safe end inside surface stainless steel weld overlays.Checkout facility of the prior art, on the one hand, its volume is bigger; Take more nuclear island resource, on the other hand, checked operation is dumb; The often effectively scanning of weld seam that is connected with cylindrical shell for ozzle; Video-unit perhaps is not set can not carry out video check to the overlay cladding inside surface, and the examination scope that can accomplish is restricted, and this safe operation to pressure vessel produces certain potential safety hazard.
Summary of the invention
The present invention seeks to provides a kind of equipment that can carry out comprehensive multifunctional examining to pressure vessel nozzle for the deficiency that overcomes prior art.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of multifunctional inspection equipment of nuclear reactor pressure vessel nozzle, it comprises
Rack body, described rack body comprise the front end supporting module that is used to stretch in the pressure vessel nozzle, be used to be positioned at rear end supporting module on the pressure container cylinder wall, be connected between front end supporting module and the rear end supporting module and the corresponding to guide assembly of ozzle axis direction;
Scanning equipment, it comprises the shaft collar that is slidably disposed on the guide assembly, and the rotate rolling disc that be connected coaxial with shaft collar, be installed on the rolling disc and the ultrasonic probe frame that circumferentially distributes along rolling disc and be arranged on the camera on the rolling disc;
The movable supporting leg; It is removably disposed on the diverse location of guide assembly according to ozzle examine position, and described movable supporting leg uses double stroke cylinder and removable cylinder web joint to be used for contacting with the inwall at ozzle different-diameter place with opertaing device in location that ozzle directly makes progress.
In optimize a kind of mode of implementing according to technique scheme; Described front end supporting module and rear end supporting module are provided with a buoyant mass respectively; And described buoyant mass makes entire equipment be in the state that buoyancy and gravity balance each other under water, and described checkout facility pushes in the examine ozzle through auxiliary operating lever.Through adopting the front end buoyant mass to cooperate with the rear end buoyant mass; Make entire equipment be in buoyancy and the gravity state that balances each other under water; Thereby make entire equipment to get into ozzle easily or from ozzle, extract out; It is very short that the ring that takies nuclear island hangs the resource time, and having overturned existing checkout facility needs large-scale supporting leg be positioned at the pattern that pressure vessel flange face top is checked.And because the entire equipment volume is less, a plurality of identical devices can check to several ozzles simultaneously that video and ultrasonic examination signal are gathered simultaneously, thereby save a large amount of supervision time, shorten the supervision time of whole pressure vessel.
Further, described movable supporting leg is three, and three described movable supporting legs equal angles distributions in same circumference, guarantees entire equipment fixedlying positioning in ozzle.
Each described movable supporting leg comprise with guide assembly dismantle mutually connection supporting seat, be used to connect cylinder assembly the cylinder web joint, be fixed on the supporting seat and double stroke cylinder that the flexible direction of its piston rod and slide rail are axially perpendicular, with the piston rod of cylinder on be fixedly connected and material is the head gasket of polyurethane elastomer.
Part also is installed on the described rolling disc gives prominence to universal ball in the rolling disc periphery.
Described universal ball is arranged between adjacent two ultrasonic probe framves and ultrasonic probe frame and the camera.
Because the utilization of technique scheme; The present invention compared with prior art has advantage: the present invention is through adopting the movable supporting leg; The position-adjustable of movable supporting leg on guide assembly, like this, when carrying out the ultrasonic examination of safe end and ozzle attachment weld and safe end and trunk line attachment weld; The movable supporting leg is arranged on the guide assembly near the rear end supporting module; To guarantee the radial location of entire equipment in ozzle,, can realize detection to ozzle and safe end and safe end and main pipe welding seam through the axial and circumferential motion of control scanning equipment on guide rail; When needs are checked the weld seam at ozzle and cylindrical shell place; The movable supporting leg is moved on the guide assembly near the front end supporting module; The control scanning equipment moves at the supporting module place to the back-end; Thereby can realize detection, make more comprehensive the ultrasonic scan of pressure vessel nozzle to weld seam between ozzle and pressure container cylinder.Simultaneously, scanning equipment of the present invention also is provided with camera, during two weld seams of scanning safe end; Camera is gathered the video check information of safe end zone inside surface simultaneously; When checking the weld seam at ozzle and cylindrical shell place, camera obtains the video check information of ozzle section zone inside surface simultaneously, and camera sends out video check information real-time in the ozzle; Two sections zone stacks cover the desired whole nozzle area video check scope of scrutiny program; The video check information of camera collection is combined with the scanning result of ultrasonic probe, guarantee scanning result's accuracy and reliability, realize the multifunctional examining of equipment.
Description of drawings
Accompanying drawing 1 is a kind of checkout facility perspective view that technical scheme is implemented according to the present invention;
Accompanying drawing 2 is the front view of checkout facility shown in the accompanying drawing 1;
(omit with the ozzle axial line is the opposite side of axis of symmetry to accompanying drawing 3 for the movable supporting leg is arranged on checkout facility constitutional diagram near the rear end supporting module;
Accompanying drawing 4 is the structural perspective of checkout facility movable supporting leg of the present invention;
Accompanying drawing 5 is the structural perspective of a guide assembly of checkout facility of the present invention;
Accompanying drawing 6 is the scanning equipment front view of checkout facility of the present invention (probe holder and camera do not show above that);
Accompanying drawing 7 is an A-A direction cut-open view in the accompanying drawing 8;
Accompanying drawing 8 is for being equipped with the scanning equipment front view of probe holder and camera;
Accompanying drawing 9 is the probe holder perspective view;
Accompanying drawing 10 is in the extended configuration front view for probe holder;
Accompanying drawing 11 is in the contraction state front view for probe holder;
Accompanying drawing 12 is a probe holder motion principle sketch;
Accompanying drawing 13 is existing construction of pressure vessel cut-open view;
Accompanying drawing 14 is arranged on the checkout facility constitutional diagram (omitting with the ozzle axial line is the opposite side of axis of symmetry) near the front end supporting module for the movable supporting leg;
Wherein: 1, front end supporting module; 11, buoyant mass; 12, cylinder assembly; 13, fixed support plate;
2, rear end supporting module; 21, buoyant mass; 22, end face pole 23, control lever web member; 24, suspension ring; 25, ultrasonic range finder sensor; 26, level inclination meter; 20, control lever;
3, guide assembly; 31, slide rail; 311, aluminium section bar; 312, V-type rail; 32, front end-plate; 33, end plate; 34, axial actuating mechanism; 341, electric machine assembly; 342, feed screw nut combination; 343, slide block; 35, axially near switch;
4, scanning equipment; 41, shaft collar; 42, rolling disc; 43, probe holder; 431, ultrasonic probe; 432, retainer; 433, first order structure of linear motion; 4331, fixed pedestal; 4332, movable base plate; 4333, drive cylinder; 4334, universal ball; 4335, plunger; 4336, guide pole; 4337, lower connecting plate;
434, second level structure of linear motion; 4341, interlock piece; 4342, sliding bar; 4343, constant force spring seat; 4344, constant force spring; 4345, push back handle;
44, circumferential driving mechanism; 441, circumferential electric machine assembly; 442, gear; 443, gear guide; 444, pulley; 45, camera; 46, universal ball; 48, circumferentially near switch;
5, movable supporting leg; 51, supporting seat; 52, cylinder; 53, head gasket; 54, cylinder web joint;
Embodiment
Below in conjunction with accompanying drawing, specify the supersonic inspection device particular content of enforcement preferred for this invention for example:
Because checkout facility of the present invention stretches in the pressure vessel nozzle and detects; At first the view direction of equipment is carried out a definition at this; In the hope of more clearly demonstrating its architectural feature, we are called front end with the end that equipment at first gets into ozzle, like Fig. 1, right side shown in Figure 2; The other end that equipment is positioned on the pressure container cylinder inwall at last is called the rear end, like Fig. 1, left side shown in Figure 2.
Fig. 1 to Fig. 3 shows the checkout facility according to enforcement preferred for this invention, its mainly by front end supporting module 1, rear end supporting module 2, be detachably connected on the guide assembly 3 between front end supporting module 1 and the rear end supporting module 2, scanning equipment 4 and the movable supporting leg 5 that is arranged on the guide assembly 3 formed.Front end supporting module 1, rear end supporting module 2 and guide assembly 3 constitute the rack body of checkout facility of the present invention.Wherein, Front end supporting module 1 mainly plays the effect of guiding and radial location in ozzle; Rear end supporting module 2 is mainly used in realization equipment on the pressure container cylinder inwall and along the axial location of ozzle; Guide assembly 3 mainly plays the support of scanning equipment 4 and drives scanning equipment 4 above that along the ozzle axial linear movement, and movable supporting leg 5 plays the usefulness to the radial location of equipment in ozzle.Have relative independence between above-mentioned each module, each module gross weight is no more than 100kg, and the length of guide assembly 3 also is no more than 2 meters; So need not any hoisting device just can get into nuclear island; In the limited space of nuclear island, it can be assembled easily, need not to take the existing ring of nuclear island and hangs resource.To introduce the concrete structure of each functional module below:
Front end supporting module 1 mainly comprises buoyant mass 11, three cylinder assemblies 12, fixed support plate 13; Buoyant mass 11 is positioned at foremost, and it is the circle that has breach, and its diameter is less than the ozzle internal diameter; Three cylinder assemblies 12 are the hexagonal angle degree and are installed on the fixed support plate 13; Back up pad 13 parallels setting with buoyant mass 11, and both centers point-blank can be fixedly connected through joint pin between back up pad 13 and the buoyant mass 11.Described three cylinder assemblies 12 get into before the ozzle before assembling or not fully; Piston rod in the cylinder is in contraction state, and each cylinder assembly 12 is contained between buoyant mass 11 and the fixed support plate 12, after getting into ozzle fully; Control cylinder assembly 12 makes cylinder piston rod extend along the ozzle radial direction; Front end and ozzle inwall until each cylinder assembly 12 offset, and be as shown in Figure 3, thus the radial location of opertaing device front end and ozzle.
Rear end supporting module 2 mainly by a buoyant mass 21, be fixed on the buoyant mass 21 and four end face poles 22 along the circumferential direction being evenly distributed on buoyant mass 21 outsides are formed; Simultaneously; Thereby on rear end supporting module 2, also being provided with is used for being connected with control lever 20 whole checkout facility is pushed or pulls out the control lever web member 23 of ozzle and is arranged on the suspension ring 24 that buoyant mass 21 centers are used to lift by crane whole checkout facility, as shown in Figure 2.
Need to prove; Because pressure vessel is among the deep water; And internal tank also is full of has water; Get into abreast in the ozzle in order to convert into again after making checkout facility of the present invention to drop in the container by vertical direction easily, among the present invention, the buoyant mass 11 of front end supporting module 1 and suffered the equating with the gravity of entire equipment in pressure vessel of the buoyant mass 21 of rear end supporting module 2 to buoyancy; Thereby make entire equipment be in the zero-g state, guaranteed that control lever 20 can push equipment in the ozzle to be detected easily.
Scanning equipment 4 comprises shaft collar 41 that the slide block 343 with said guide assembly 3 is fixedly connected, a plurality of ultrasonic probe framves 43 that circumferentially distribute with shaft collar 41 coaxial settings and the rolling disc 42 that is rotationally connected, along rolling disc 42 and is installed in the camera 45 on the rolling disc 42.Wherein, Between rolling disc 42 and shaft collar 41, also be provided with circumferential driving mechanism 44; Like Fig. 6 and shown in Figure 7; This circumferential driving mechanism 44 comprises the circumferential electric machine assembly 441 of sealing and fixing on shaft collar 41, the gear 442 that is connected with circumferential electric machine assembly 441 output terminals, is formed on the gear guide 443 that is meshed with gear 442 all rolling disc 42 in, along six pulleys 444 of shaft collar 41 inner periphery stationary distribution; Six pulleys 444 form the ring-shaped guide rail kinematic pairs with gear guide 443 on the rolling disc 42; Gear 442 that circumferential electric machine assembly 441 output terminals are connected and the gear guide 443 formative gear kinematic pairs on the rolling disc 42, concrete motion principle is: under the driving of circumferential electric machine assembly 441, gear 442 rotations; Driving through gear guide 443 makes whole rolling disc 42 rotate, thereby realizes the motion that rotates in a circumferential direction of ultrasonic probe frame 43.
Shown in Figure 8 is the front view that the scanning equipment 4 of a plurality of ultrasonic probe framves 43 and camera 45 is arranged along rolling disc 42 circle distribution; Each ultrasonic probe frame 43 structure such as Fig. 9 are to shown in Figure 11; It comprises ultrasonic probe 431, be connected with ultrasonic probe 431 and with ultrasonic probe 431 between have the retainer 432 of two rotary motion pairs, the two-stage structure of linear motion that can radially make the straight line contractile motion along rolling disc 42 that is connected with retainer 432; First order structure of linear motion 433 comprises the fixed pedestal 4331 that is fixed on the rolling disc 42, is provided with the movable base plate 4332 of universal ball 4334 in above the fixed pedestal 4331 and its upper end, is connected the driving cylinder 4333 between fixed pedestal 4331 and the movable base plate 4332; Movable base plate 4332 is called first order rectilinear motion with respect to the rectilinear motion of fixed pedestal 4331, drives by driving cylinder 4333; Described second level structure of linear motion 434 comprises and is positioned at movable base plate 4332 belows and the interlock piece 4341 that is fixedly connected with movable base plate 4332, is slidably disposed on the sliding bar 4342 on the interlock piece 4341; Described retainer 432 rotates with sliding bar 4342 upper ends and is connected, and described retainer 432 rectilinear motion with respect to movable base plate 4332 under the drive of sliding bar 4342 is called second level rectilinear motion.The motion principle of probe holder 43 can be reduced to shown in figure 12.
Under the effect of above-mentioned two-stage structure of linear motion; Described probe holder 43 has contraction and stretches two states; When probe holder 43 was in contraction state, like Fig. 8 and shown in Figure 11, described movable base plate 4332 was drawn close with fixed pedestal 4331 mutually; And movable base plate 4332 is positioned at the circumference of rolling disc 42, and the projection that described ultrasonic probe 431 makes progress in rolling disc 42 footpaths is lower than the projection that movable base plate 432 makes progress in rolling disc 42 footpaths; When described probe holder 43 is in extended configuration; Like Fig. 9 and shown in Figure 10; Described movable base plate 4332 is away from fixed pedestal 4331 and protrude the periphery at rolling disc 42, and described ultrasonic probe 431 is higher than the projection of movable base plate 432 on rolling disc 42 extend radially lines in the projection on the rolling disc 42 extend radially lines.
In the present embodiment; First order structure of linear motion 433 also further comprises the bulb plunger 4335 that is arranged on fixed pedestal 4331 upper ends, be located in the fixed pedestal 4331 slidably and guide pole 4336 that upper end and movable base plate 4332 are fixedly connected, guide pole 4336 lower ends be located at the lower connecting plate 4337 that drives on cylinder 4333 cylinder bodies and be fixedly connected.Second level structure of linear motion 434 further comprise constant force spring 4344 that the constant force spring seat 4343 that is fixedly connected with sliding bar 4342 lower ends, an end winding other end and interlock piece 4341 in constant force spring seat 4343 be fixedly connected, middle and movable base plate 4332 rotate be connected an end and sliding bar 4342 mutually chute be connected that the other end and described bulb plunger 4335 face mutually push back handle 4345.When probe holder 43 is in extended configuration; Shown in figure 11, guide pole 4336 is risen to a height synchronously by movable base plate 4332, pushes back handle 4345 and is in free state; Constant force spring seat 4343 is drawn close with interlock piece 4341 mutually; Via the driving of constant force spring 4344, sliding bar 4342 is upwards released, and ultrasonic probe is in the position that is higher than movable base plate 4332; When probe holder 43 by extended configuration in the contraction state transfer process, the piston rod that drives cylinder 4333 shrinks, movable base plate 4332 is drawn close to fixed pedestal 4331; Bulb plunger 4335 on fixed pedestal 4331 contacts with pushing back handle 4345, along with the further contraction of cylinder, and the end that plunger 4335 will push back handle 4345 jack-up that makes progress; The other end that pushes back handle 4345 turning axle between wherein rotates, thereby plunger 4335, pushes back between handle 4345 and the sliding bar 4342 and form leverage, according to lever principle; Sliding bar 4342 will move downward; Thereby overcome the acting force of constant force spring 4344, promote constant force spring seat 4343 and move downward, be under movable base plate 4332 surface levels until ultrasonic probe 431; Shown in figure 11, promptly realize the conversion of probe holder 43 from the extended configuration to the contraction state.
In the present embodiment, each probe holder 43 is provided with two ultrasonic probes 431, so corresponding each ultrasonic probe 431 is respectively arranged with the second level straight-line motion mechanism 434 that is connected with movable base plate 4332, on rolling disc 42, is divided into seven described probe holders 43 of cloth.
Above-mentioned probe holder structure and action principle that the present invention implemented are illustrated; Its major advantage is: when probe holder shrinks; Ultrasonic probe 431 is getting into ozzle or from ozzle, in the extraction, is avoiding ultrasonic probe 431 to contact with the ozzle inwall under universal ball 4334; But contact with the ozzle inwall, thereby prevent that the ultrasonic probe frame from scratching the ozzle inwall by the surface smooth universal ball 4334 of ten minutes; When probe holder is in extended configuration; Ultrasonic probe 431 is higher than the position of universal ball 4334 under the effect of constant force spring 4344; And owing to have two rotary motion pairs between ultrasonic probe 431 and the retainer 432; Ultrasonic probe 431 always can keep fitting with the ozzle face, and the constant pulling force that equals constant force spring 4344 of applying power, has guaranteed the robust motion of scanning.
On each slide rail 31, be connected with a movable supporting leg 5 respectively, and movable supporting leg 5 is 120 degree distributions on same periphery.The structure of each movable supporting leg 5 is as shown in Figure 4, it comprises the supporting seat 51 that is connected through screw with slide rail 31, be fixedly installed on the supporting seat 51 and cylinder 52 that the flexible direction of its piston rod and slide rail 31 are axially perpendicular, with the piston rod of cylinder 52 on the material that is fixedly connected be the head gasket 53 of polyurethane elastomer.The fixed position scalable of movable supporting leg 5; When needs carry out the inspection of weld seam between ozzle and safe end and safe end and the trunk line; Movable supporting leg 5 is fixed on the guide assembly 3 near rear end supporting module 2, as shown in Figure 3, when needs carry out between ozzle and cylindrical shell the attachment weld inspection; Movable supporting leg 5 is fixed on the guide assembly 3 near front end supporting module 2, shown in figure 14.
Checkout facility of the present invention also comprise be used to detect entire equipment ozzle axially with axial direction on the whether stable and detent mechanism that is used for definite scanning equipment initial position on axial and circumferential; It mainly comprises ultrasonic range finder sensor 25 on two opposing end faces poles 22 that are installed in rear end supporting module 2, is installed in the level inclination meter 26 of the inboard of buoyant mass 21; Referring to Fig. 2; Ultrasonic range finder sensor 25 is used to detect the distance of end face pole 22 front ends and pressure container cylinder inwall, and level inclination meter 26 is used for detecting in real time the pitch angle of supersonic inspection device along the pressure vessel nozzle X-direction.Scanning module 4 by being installed in axially realizing near switch 35 on the guide assembly 3, is seen Fig. 2 at the initial position on the guide assembly 3.Scanning module 4 circumferentially realizes that near switch 48 referring to Fig. 6, this switch base near switch 48 is arranged on the shaft collar 41 at the initial position that makes progress in week by mounted thereto, and the switch probe is installed on the rolling disc 42.
The particular exam process is following:
(1), the movable supporting leg is provided with: the position that being fixed on of movable supporting leg is shown in Figure 2, before not getting into ozzle, each probe holder and movable supporting leg all are in contraction state on the scanning equipment;
(2), coarse positioning: entire equipment is dropped in the pressure vessel; Be connected with control lever web member on the equipment through control lever; Checkout facility is slowly sent into ozzle to be measured; The front end supporting module of checkout facility is introduced in the ozzle, and guide assembly and scanning equipment then get into ozzle, make the cylinder inboard wall of end face pole and nuclear reactor pressure container on the supporting module of rear end relative at last;
(3), axial and circumferential location: slowly adjust control lever and with equipment as far as possible toward the ozzle medial movement; Through observing the output signal of ultrasonic range finder sensor and level inclination meter; The position of vernier device in ozzle; The cylinder of the cylinder assembly of forward end supporting module and each movable supporting leg is sent into air pressure, makes each cylinder along stretching out towards ozzle inwall direction, with the location of completion equipment in ozzle;
(4), the scanning in ozzle and safe end and safe end and main pipe welding seam zone: stretch out direction ventilation pressure for the driving cylinder of ultrasonic probe frame; Make all ultrasonic probe framves be in extended configuration, the ultrasonic probe and the ozzle inwall that are fixed on the ultrasonic probe frame are fitted.Through be set on the guide assembly axially near switch and be arranged on shaft collar and rolling disc between circumferentially near the trigger pip of switch output, confirm the initial position of probe holder on axial and circumferential, the scanning planning execution scanning task that can require according to scrutiny program then; Typical scanning mode has two kinds: a kind of detection of being called; Promptly circumferentially from 0 ° of scanning to 361 °, axial stepping 5mm, then; Circumferentially get back to 0 ° from 361 °; Axially stepping 5mm is so back and forth, regional up to covering whole safe end weld seam examine; Another kind is called sizing, promptly axially from the 0mm position to the 426mm position, circumferentially stepping is 0.4 °, axially from the 426mm position to the 0mm position, circumferentially stepping is 0.4 °, so back and forth, up to covering whole safe end weld seam examine zone; In this process, camera is also gathered the also video check signal of real-time Transmission safe end zone inner wall surface simultaneously, implements the video check of this regional extent;
(5), equipment water outlet adjustment movable supporting leg position: after accomplishing the scanning in safe end zone; Each cylinder of controlling each probe holder, movable supporting leg, front end supporting module shrinks; Through control lever checkout facility is slowly shifted out in ozzle; All in ozzle, shift out until entire equipment, use ring to hang at last or the rear end supporting module of other boom hoisting and equipment on suspension ring be connected so that equipment is hung out in nuclear reactor pressure container; The fixed position of movable supporting leg 5 is adjusted into position shown in Figure 14, continues to drop in the pressure vessel nozzle, scanning equipment is carried out the scanning action in the ozzle section, accomplishes ozzle and the ultrasonic scan of cylindrical shell weld seam and the video check of ozzle section;
(6), accomplish scanning: after treating that above-mentioned two regional scannings are intact, entire equipment is hung out in pressure vessel fully, each module of entire equipment is separated come, to take out of nuclear island respectively, the final completion checked operation.
Checkout facility volume of the present invention is less; Weight is lighter, can drop in the ozzle or from ozzle easily and extract out, simultaneously; It is provided with movable supporting leg and underwater camera head; In the strong fix, can realize the ultrasonic scan and the video check in whole ozzle zone are realized multi-functional operation in ozzle at assurance equipment.
Claims (7)
1. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle, it is characterized in that: it comprises
Rack body, described rack body comprise the front end supporting module, the rear end supporting module that is used to be positioned at the pressure container cylinder inwall that are used to stretch in the pressure vessel nozzle, be connected between front end supporting module and the rear end supporting module and the corresponding to guide assembly of ozzle axis direction;
Scanning equipment, it comprises the shaft collar that is slidably disposed on the guide assembly, and the rotate rolling disc that be connected coaxial with shaft collar, be installed on the rolling disc and the ultrasonic probe frame that circumferentially distributes along rolling disc and be arranged on the camera on the rolling disc;
The movable supporting leg, it is removably disposed on the diverse location of guide assembly according to ozzle examine position, and described movable supporting leg is used for contacting with the ozzle inwall to control described multifunctional inspection equipment in location that ozzle directly makes progress.
2. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 1; It is characterized in that: described front end supporting module and rear end supporting module are provided with a buoyant mass respectively; And described buoyant mass makes whole described checkout facility be in the state that buoyancy and gravity balance each other under water, and described checkout facility pushes in the examine ozzle through auxiliary operating lever.
3. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 1 is characterized in that: described movable supporting leg is three, and three described movable supporting legs equal angles in same circumference distributes.
4. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 3 is characterized in that: each described movable supporting leg comprise with guide assembly dismantle mutually connection supporting seat, be fixed on the supporting seat and cylinder that the flexible direction of its piston rod and the slide rail of described guide assembly are axially perpendicular, with the piston rod of cylinder on be fixedly connected and material is the head gasket of polyurethane elastomer.
5. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 4 is characterized in that: the described cylinder of described movable supporting leg is a double stroke cylinder.
6. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 1 is characterized in that: part also is installed on the described rolling disc gives prominence to the universal ball in the rolling disc periphery.
7. multifunctional inspection equipment of nuclear reactor pressure vessel nozzle according to claim 6 is characterized in that: described universal ball is arranged between adjacent two ultrasonic probe framves and ultrasonic probe frame and the camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102568124A CN101916598B (en) | 2010-08-19 | 2010-08-19 | Multifunctional inspection equipment of nuclear reactor pressure vessel nozzle |
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| CN2010102568124A CN101916598B (en) | 2010-08-19 | 2010-08-19 | Multifunctional inspection equipment of nuclear reactor pressure vessel nozzle |
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| CN101916598B true CN101916598B (en) | 2012-08-08 |
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| CN102509566B (en) * | 2011-10-17 | 2014-03-12 | 中广核检测技术有限公司 | Nuclear rector pressure vessel nozzle safe end welding joint automatic ray inspection device |
| CN102903406B (en) * | 2012-10-12 | 2016-03-16 | 中广核检测技术有限公司 | Nuclear power plant reactor pressure vessel video checking system |
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| CN103761998B (en) * | 2014-01-20 | 2016-04-06 | 中广核检测技术有限公司 | Reactor pressure vessel nozzle inspection probe holder |
| CN104112483B (en) * | 2014-05-29 | 2017-01-18 | 中广核检测技术有限公司 | Ultrasonic scanning device for nuclear power station reactor pressure vessel flange connection band |
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| CN101916598A (en) | 2010-12-15 |
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Address after: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee after: CGNPC Inspection Technology Co., Ltd. Patentee after: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee after: China General Nuclear Power Corporation Address before: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee before: CGNPC Inspection Technology Co., Ltd. Patentee before: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |