A kind of cable installation for the detection of horizontal steam generator heat-transfer pipe vortex
Technical field
The technology belongs to cable installation field, and in particular to a kind of to be used for what horizontal steam generator heat-transfer pipe vortex detected
Cable installation.
Background technology
In nuclear power station, steam generator heat-transfer pipe is the capital equipment of nuclear power station and the pressure side of reactor cooling system
Boundary, pressure boundary area account for more than 70% primary Ioops boundary.Since heat-transfer pipe is the thin-wall tube of 1mm or so, Er Qieyun
Row operating mode is very severe, so heat-transfer pipe is always primary Ioops pressure boundary link the weakest.International nuclear power operational data
Statistics shows that about more than 50% is occurring the different degrees of breakage of heat-transfer pipe with steam generator.Domestic and international each nuclear power
Country periodically implements preservice inspection and inservice inspection to steam generator heat-transfer pipe.
The steam generator for horizontal double collecting pipe structures that the steam generator of VVER-1000M units uses, heat-transfer pipe are adopted
With horizontally disposed, referred to as horizontal steam generator.More than 10000 heat-transfer pipe is stood by internal diameter φ 834mm, wall thickness 171mm two
Heat-transfer pipe is divided into cold and hot two large divisions by formula header, and using hydraulic pressure and mechanical expanding on header.
In view of the particularity of horizontal steam generator structure, probe positioning used and taper attachment and vertical steam generator
It is entirely different.Pipe vortex detection device needs to initially pass through the manhole of φ 500mm, enters back into the header of internal diameter φ 834mm, high 5m
It is interior, carry out eddy current inspection.
Invention content
It is an object of the invention to:A kind of cable installation for the detection of horizontal steam generator heat-transfer pipe vortex is provided,
It avoids the problem that cable winds occur during the motion for equipment, improves the safety of cable, employ cable structure, ensure that
The reliability of equipment..
Technical scheme is as follows:A kind of horizontal steam generator heat-transfer pipe vortex detection device, including upper end
Rotating platform, double column guide rails, hoistable platform and double taper attachments;Hoistable platform carries double taper attachments along double column guide rails
It moves up and down, and rotating platform drives double column guide rails, hoistable platform and the rotation of double taper attachments;Double taper attachments 4 drive whirlpool
Flow the movement of probe;
In the rotating platform, upper strata flange is fixed by pillar with lower floor flange;Gear wheel is fixed on the flange of upper strata;
Electrical box A is then fixed on lower floor's flange;Cable rotating mechanism is arranged between lower floor's flange, upper strata flange;Support base is fixed
On rotating ring, electrical box B and double column guide rails are each attached on support base;Motor mount is also secured on rotating ring,
Motor mount is fixedly arranged above motor, and lower section is equipped with pinion gear;By the driving of motor, rotating ring drives double column guides
Rail rotates.
The cable rotating mechanism includes outer ring, inner ring, support plate, baffle and rotation drag chain;Outer ring is consolidated with lower floor flange
Fixed, the stent above inner ring is fixed with rotating ring;Support plate is fixed on outer ring, and baffle is then fixed on the supporting plate, baffle
Bottom surface and the bottom of inner ring are not contacted there are certain gap;Rotate connector A, the connector B at drag chain both ends respectively with inner ring and outer
Circle is fixed;The trepanning in inner ring so that the cable in rotation drag chain can be pierced by from inner ring;It is hollow inside double column guide rails
Structure, face trepanning corresponding with the hole in inner ring so that cable can be from inner ring directly through double column guide rails, and finally connection is electric
Gas box B.
Stent above the inner ring is screwed with rotating ring.
The top connection of lifting drag chain is fixed on support base, and lower contact is fixed on hoistable platform, and cable envelope is lifting
Inside drag chain.
The remarkable result of the present invention is:
1) increase in eddy current testing device, cable is divided into several sections, convenient for the dismounting of equipment and the repair of cable and more
It changes.
2) using the scheme of electric cable rotary structure, the equipment risk that cable is wound in rotary course is solved, raising is set
Standby safety.
3) electric cable rotary structure is arranged between two layers of flange up and down, and foreign matter is avoided to enter in electric cable rotary structure, is caused
The failure of cable.
4) trepanning on the inner ring and column of cable rotational structure so that cable can pass through hollow column from drag chain,
Electrical box is connected, the winding that cable will not be with other parts, scratch problem is ensure that, cable is protected.
5) it in cable rotational structure, is fixed on outer ring using support plate, in the rotary course of drag chain, to rotary mop
Chain guides, and ensures the safety of drag chain.
6) lifting drag chain is applied in the environment of long stroke standing.Cable envelope avoids cable in drag chain is lifted
It winds and scratches during exercise in hoistable platform and double taper attachments, ensure the safe and reliable operation of equipment.
Description of the drawings
Fig. 1 is the cable installation schematic diagram of the present invention for the detection of horizontal steam generator heat-transfer pipe vortex;
Fig. 2 is that the cable installation rotating platform of the present invention for the detection of horizontal steam generator heat-transfer pipe vortex shows
It is intended to;
Fig. 3 is that the cable installation lifting drag chain of the present invention detected for horizontal steam generator heat-transfer pipe vortex shows
It is intended to;
Fig. 4 is the cable installation of the present invention for the detection of horizontal steam generator heat-transfer pipe vortex
In figure:1 rotating platform, 2 pairs of column guide rails, 3 hoistable platforms, 4 pairs of taper attachments, 5 lower floor's flanges, 6 upper strata flanges,
7 pillars, 8 gear wheels, 9 electrical box A, 10 electric cable rotary structures, 11 rotating rings, 12 support bases, 13 electrical box B, the installation of 14 motors
Seat, 15 motors, 16 pinion gears, 17 outer rings, 18 inner rings, 19 support plates, 20 baffles, 21 rotation drag chains, 22 connector A, 23 stents, 24
Lift drag chain, 25 top connections, 26 lower contacts, 27 connector B, 28 holes
Specific embodiment
A kind of horizontal steam generator heat-transfer pipe vortex detection device includes the rotating platform 1 of upper end, double column guide rails 2,
Hoistable platform 3 and double taper attachments 4.Hoistable platform 3 carries double taper attachments 4 and moves up and down along double column guide rails 2, and rotates
Platform 1 drives double column guide rails (2), hoistable platform 3 and double taper attachments 4 to rotate.Double taper attachments 4 drive the fortune of eddy current probe
It is dynamic.
Rotating platform 1 includes lower floor's flange 5, upper strata flange 6, pillar 7, gear wheel 8, electrical box A9, cable rotating mechanism
10th, rotating ring 11, support base 12, electrical box B13, motor mount 14, motor 15, pinion gear 16, column 2.
Upper strata flange 6 is fixed by pillar 7 and lower floor flange 5.Gear wheel 8 is fixed on upper strata flange 6.Electrical box A9 is then
It is fixed on lower floor's flange 5.Cable rotating mechanism 10 is arranged between lower floor's flange 5, upper strata flange 6.Support base 12 is fixed on
On rotating ring 11, electrical box B13 and double column guide rails 2 are each attached on support base 12.Motor mount 14 is also secured at rotation
On ring 11, motor 15 is fixedly arranged above in motor mount 14, lower section is equipped with pinion gear 16.By the driving of motor 15,
Rotating ring 11 drives double column guide rails 2 to rotate.
Cable rotating mechanism 10 includes outer ring 17, inner ring 18, support plate 19, baffle 20 and rotation drag chain 21.Outer ring 17 with
Lower floor's flange 5 is fixed, and the stent 23 of 18 top of inner ring is screwed with rotating ring 11.Support plate 19 is fixed on outer ring 17,
Baffle 20 is then fixed in support plate 19, and the bottom surface of baffle 20, there are certain gap, is not contacted with the bottom of inner ring 18.Rotation
Connector A (22), the connector B27 at 21 both ends of drag chain are fixed respectively with inner ring 18 and outer ring 17.The trepanning 28 in inner ring 18 so that rotation
Turning the cable in drag chain 21 can be pierced by from inner ring 18.It is hollow structure inside double column guide rails 2, with the hole 28 in inner ring 18
Corresponding face trepanning so that cable can finally connect electrical box B13 from inner ring 18 directly through double column guide rails 2.
The top connection 25 of lifting drag chain 24 is fixed on support base 12, and lower contact 26 is fixed on hoistable platform 3, cable packet
Network is inside lifting drag chain 24.