CN204758534U - Steam generator heat -transfer pipe eddy current inspection's rotary platform - Google Patents
Steam generator heat -transfer pipe eddy current inspection's rotary platform Download PDFInfo
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- CN204758534U CN204758534U CN201420857898.XU CN201420857898U CN204758534U CN 204758534 U CN204758534 U CN 204758534U CN 201420857898 U CN201420857898 U CN 201420857898U CN 204758534 U CN204758534 U CN 204758534U
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- steam generator
- transfer pipe
- guide rail
- gear wheel
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Abstract
The utility model relates to a steam generator heat -transfer pipe eddy current inspection's rotary platform, including stand guide rail, supporting shoe, rotatory ring, gear wheel, drive assembly, the supporting shoe is fixed on the stand guide rail, rotatory ring cover is outside the stand guide rail, and fixed surface is gone up with rotatory ring to the terminal surface under the supporting shoe, the gear wheel overlaps outside rotatory ring, and leaves the clearance between the rotatory ring, the fixed loop cover is outside the stand guide rail, and the gear wheel is fixed the fixed loop upper surface, the fixed loop lower part is provided with the locating pin, drive assembly with the gear wheel cooperation, the drive big gear revolve. The utility model discloses can improve a whole set of vortex collection equipment's rigidity, the steam generator heat -transfer pipe eddy current inspection of very big improvement collection system circumferential location's precision.
Description
Technical field
The present invention relates to nuclear engineering technical field, be specifically related to the rotation platform that a kind of steam generator heat-transfer pipe vortex detects.
Background technology
In nuclear power station, steam generator heat-transfer pipe is the major equipment of nuclear power station and the pressure boundary of reactor cooling system, and its pressure boundary area accounts for more than 70% of primary Ioops border.Because heat-transfer pipe is the thin walled tube of about 1mm, and operating condition is very severe, so the heat-transfer pipe link that to be primary Ioops pressure boundary the weakest always.International nuclear power run book statistics shows, be about more than 50% all there is heat-transfer pipe breakage in various degree with steam generator.Domestic and international each nuclear power country all regularly implements preservice inspection and inservice inspection to steam generator heat-transfer pipe.
The steam generator of horizontal pair of collecting pipe structure of the steam generator employing of VVER-1000M unit, heat-transfer pipe adopts horizontally disposed, is called horizontal steam generator.More than 10000 heat-transfer pipe passes through internal diameter
heat-transfer pipe is divided into cold and hot two large divisions by 834mm, wall thickness 171mm two vertical headers, and utilizes hydraulic pressure and mechanical expanding on header, shown in Fig. 1.In view of the singularity of horizontal steam generator structure, probe used location and taper attachment completely different from vertical steam generator.Therefore the rotation platform that a kind of novel steam generator heat-transfer pipe vortex detects is needed, to realize the rotation of checkout equipment in steam generator inside.
Summary of the invention
The object of this invention is to provide a kind of rigidity improving a whole set of eddy current collecting device, the rotation platform that the steam generator heat-transfer pipe vortex improving the precision of harvester circumference location greatly detects.
The present invention is achieved in that and comprises column guide rail, back-up block, swivel eye, gear wheel, driven unit by the rotation platform that a kind of steam generator heat-transfer pipe vortex detects;
Back-up block is fixed on column guide rail; Swivel eye is enclosed within outside column guide rail, and back-up block lower surface and swivel eye upper surface are fixed; Gear wheel is enclosed within outside swivel eye, and leaves gap between swivel eye; Fixing shrink ring is outside column guide rail, and gear wheel is fixed on described set collar upper surface; Set collar bottom is provided with register pin; Described driven unit coordinates with described gear wheel, drives described bull gear drive.
Also comprise the over cap that its upper surface is fixed on the base plate of described set collar lower surface, its upper surface is fixed on described base plate lower surface; Described register pin is fixed on described over cap lower surface.
Described driven unit comprises motor cabinet, motor; Described motor cabinet is fixed on described swivel eye upper surface; Described motor output shaft is equipped with pinion wheel, and described pinion wheel engages with described gear wheel.
Also comprise four-point contact ball, it is outer and be arranged between described swivel eye and set collar that it is enclosed within column guide rail.
The invention has the beneficial effects as follows:
(1) the present invention adopts gear wheel to be fixed on the structure of header upper end, improves the circumferential positioning precision of harvester greatly.
(2) the present invention adopts thin-walled four-point contact ball can bear connected load simultaneously, simplifies the supporting structure of harvester, the weight of alleviator.
(3) the present invention adopts plastic part, avoids rotation platform to damage header.
Accompanying drawing explanation
Fig. 1 is horizontal steam generator header and heat-transfer pipe schematic diagram;
Fig. 2 is the rotation platform application schematic diagram that steam generator heat-transfer pipe vortex of the present invention detects;
Fig. 3 is the rotation platform schematic diagram that steam generator heat-transfer pipe vortex of the present invention detects;
In figure: 1-header; 2-heat-transfer pipe; 3-column guide rail; 4-back-up block; 5-swivel eye; 6-gear wheel; 7-pinion wheel; 8-motor cabinet; 9-four-point contact ball; 10-set collar; 11-bottom end cover; 12-base plate; 13-over cap; 14-register pin; 15-motor; 16-wheel box; 17-rotation platform.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Horizontal steam generator is arranged horizontally, both sides vertically arrange a cold and hot end header 1 respectively, the primary Ioops medium come from reactor pressure vessel enters hot junction header 1 and is assigned to each heat-transfer pipe 2 and carries out exchange heat, and then enters cold section of reactor-loop after being pooled to cold junction header 1; Header 1 upper end is provided with manhole and manhole flange.
The rotation platform 17 that steam generator heat-transfer pipe vortex of the present invention detects comprises motor 15, wheel box 16, column guide rail 3, back-up block 4, swivel eye 5, gear wheel 6, pinion wheel 7, motor cabinet 8, four-point contact ball 9, set collar 10, bottom end cover 11, base plate 12, over cap 13, register pin 14;
As shown in Figure 3, two root post guide rails 3 be arranged in parallel, and bottom is connected by web joint; Two back-up block 4 sides are fixed with two column guide rails 3 respectively; Swivel eye 5 is enclosed within outside two root post guide rails 3; Two back-up block 4 lower surfaces and swivel eye 5 upper surface are fixed; Motor cabinet 8 is fixed on described swivel eye upper surface;
Gear wheel 6 is enclosed within outside swivel eye 5, and leaves gap between swivel eye 5;
Gear wheel 6 is fixed on set collar 10 upper surface; Set collar 10 is enclosed within outside column guide rail 3;
Bottom end cover 11 and swivel eye 5 lower surface are fixed; Base plate 12 upper surface and set collar 10 lower surface are fixed, and base plate 12 lower surface and over cap 13 upper surface are fixed; Two register pins 14 are fixed through over cap 13 and base plate 12 lower surface;
Motor 15 is fixed on motor cabinet 8, and is connected with wheel box 16, and wheel box 16 output shaft is equipped with pinion wheel 7; Pinion wheel 7 engages with gear wheel 6.
At plastic protection cover 13 and the register pin 14 of base plate 12 lower end; over cap 13 energy avoiding device scratch header upper end sealing surface; the threaded hole that register pin 14 inserts on the manhole flange of header 1 upper end is fixed axial, prevents rotation platform from damaging sealing surface and the threaded hole at manhole place, header upper end.Four-point contact ball 9 is arranged between swivel eye 5 and set collar 10, play supporting role to two relative movement parts, can bear the connected loads such as axial, radial, reduces the frictional resistance of rotary part in motion process.Motor 15 rotates around gear wheel 6 through wheel box 16 speed change rear drive pinion wheel 7, thus the rotation of driven rotary ring 5 realizes the circumferential movement of the harvester be arranged between column guide rail 3.
The distribute header diameter of section of the reference diameter of gear wheel 6 and heat-transfer pipe is approximately suitable, and the positioning error of rotation depends primarily on the machining precision of gear.When Errors in Gear Processing is identical, the circumferential positioning error of equipment correspondingly compared with prior art can reduce 3 times.
Set collar 10 is provided with thin-walled four-point contact ball 9, and this bearing can bear radial direction, axial load and torque load.By using a bearing to bear connected load, the combination of alternative diagonally contact ball bearing, in pairs taper roll bearing or two kinds of different bearings, optimizes one-piece construction, saves space, decreases overall size, alleviates weight.
The eddy current inspection rotation platform installed based on manhole flange face, header upper end in the present invention is a kind of specialized equipment implementing the detection of horizontal steam generator heat-transfer pipe vortex.In detection, rotation platform 17 is fixed on header upper end, as shown in Figure 2.
Claims (4)
1. a rotation platform for steam generator heat-transfer pipe vortex detection, is characterized in that: comprise column guide rail, back-up block, swivel eye, gear wheel, driven unit;
Back-up block is fixed on column guide rail; Swivel eye is enclosed within outside column guide rail, and back-up block lower surface and swivel eye upper surface are fixed; Gear wheel is enclosed within outside swivel eye, and leaves gap between swivel eye; Fixing shrink ring is outside column guide rail, and gear wheel is fixed on described set collar upper surface; Set collar bottom is provided with register pin; Described driven unit coordinates with described gear wheel, drives described bull gear drive.
2. according to the rotation platform that steam generator heat-transfer pipe vortex according to claim 1 detects, it is characterized in that: also comprise the over cap that its upper surface is fixed on the base plate of described set collar lower surface, its upper surface is fixed on described base plate lower surface; Described register pin is fixed on described over cap lower surface.
3. according to the rotation platform that steam generator heat-transfer pipe vortex according to claim 1 detects, it is characterized in that: described driven unit comprises motor cabinet, motor; Described motor cabinet is fixed on described swivel eye upper surface; Described motor output shaft is equipped with pinion wheel, and described pinion wheel engages with described gear wheel.
4. according to the rotation platform that steam generator heat-transfer pipe vortex according to claim 1 detects, it is characterized in that: also comprise four-point contact ball, it is outer and be arranged between described swivel eye and set collar that it is enclosed within column guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857898.XU CN204758534U (en) | 2014-12-30 | 2014-12-30 | Steam generator heat -transfer pipe eddy current inspection's rotary platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857898.XU CN204758534U (en) | 2014-12-30 | 2014-12-30 | Steam generator heat -transfer pipe eddy current inspection's rotary platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758534U true CN204758534U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420857898.XU Active CN204758534U (en) | 2014-12-30 | 2014-12-30 | Steam generator heat -transfer pipe eddy current inspection's rotary platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806931A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Steam generator heat-transfer pipe eddy current detection rotation platform |
-
2014
- 2014-12-30 CN CN201420857898.XU patent/CN204758534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806931A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Steam generator heat-transfer pipe eddy current detection rotation platform |
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