CN203338772U - Testing device for welded joints of steam generator adapter tube - Google Patents

Testing device for welded joints of steam generator adapter tube Download PDF

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Publication number
CN203338772U
CN203338772U CN201320287516XU CN201320287516U CN203338772U CN 203338772 U CN203338772 U CN 203338772U CN 201320287516X U CN201320287516X U CN 201320287516XU CN 201320287516 U CN201320287516 U CN 201320287516U CN 203338772 U CN203338772 U CN 203338772U
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China
Prior art keywords
support mechanism
circumferential
scanning
upper support
slide unit
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Withdrawn - After Issue
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CN201320287516XU
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Chinese (zh)
Inventor
周礼峰
张志强
朱性利
肖华
蔡家藩
张志义
丁冬平
周亮
杨勇
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Research Institute of Nuclear Power Operation
China Nuclear Power Operation Technology Corp Ltd
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Research Institute of Nuclear Power Operation
China Nuclear Power Operation Technology Corp Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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Abstract

The utility model relates to the technical field of non-destructive testing on a loop system of a nuclear power station, and particularly discloses a testing device for welded joints of a steam generator adapter tube. The testing device comprises a supporting rod, an upper supporting mechanism, an axial scanning mechanism, a circumferential scanning mechanism, a lower supporting mechanism and a foreign matter collection mechanism, wherein the upper supporting mechanism and an expansion link are fixed at the upper end of the supporting rod, the lower supporting mechanism and the foreign matter collection mechanism are fixed on the lower end of the supporting rod, and the axial scanning mechanism and the circumferential scanning mechanism are arranged on the supporting rod between the upper supporting mechanism and the lower supporting mechanism. In the beginning, the testing device is at a folded state, so that the radial dimension of the testing device can meet the requirements on entering and exiting from a manhole, and during working, the testing device can be unfolded, and the radial direction of the testing device can be fitted to the inner wall of the adapter tube; the axial location and the circumferential location are realized; meanwhile, by adopting the upper supporting mechanism and the lower supporting mechanism, the stability of the testing device is improved; a driving mechanism is used for providing original driving force for the expansion link, the upper supporting mechanism, the lower supporting mechanism and the foreign matter collection mechanism, thus drinking links are reduced, and the dead load of the testing device is reduced.

Description

A kind of steam generator welding inspection of adapter device
Technical field
The utility model belongs to nuclear power station one circuit system technical field of nondestructive testing, is specifically related to a kind of steam generator welding inspection of adapter device.
Background technology
According to the related request of ASME standard, the steam generator of nuclear power generating sets is taken over the heavy wall weld seam of dissimilar metal welding line as major loop, belong to rules and must examine content, and test range is weld seam inwall 1/3 wall thickness.
Up to now, the steam generator of nuclear power generating sets is taken over the ultrasonic examination of weld seam, all selects the mode that approaches from the weld seam outer wall.Along with the design improvement of nuclear power generating sets, the wall thickness dimension of taking over weld seam has a larger increase before.Be subject to the limitation of ultrasonic examination method itself, for the heavy wall weld seam, need implement to check from taking over the weld seam inwall, can cover the test range of weld seam.
In the steam generator of part advanced Nuclear Power unit, its low head is the hemisphere of a diameter 4500mm.There is a dividing plate end socket inside, there is boss adapter inside, stops pore structure, as selected to be examined weld seam from taking over inner approaching, the unique channel of its turnover hydroecium is the manhole of hydroecium, people's bore dia is 457.2mm only, and the internal diameter of taking over weld seam is 657.4mm, and adapter and manhole deposit 45 ° of angles, and the water chamber structure feature is brought very big difficulty to the accessibility of ultrasonic scan device and foreign matter collection etc.Therefore, need a kind of steam generator welding inspection of adapter device of development badly, this testing fixture can, smoothly by manhole and taking over positioned internal, scanning and foreign matter collection, be to realize the welding line ultrasonic self-verifying.
Summary of the invention
The purpose of this utility model is to provide a kind of steam generator welding inspection of adapter device, can solve ultrasonic weld seam testing fixture smoothly by manhole and in the technical matters of taking over positioned internal, scanning and foreign matter collection.
The technical solution of the utility model is as follows: a kind of steam generator welding inspection of adapter device, this testing fixture comprises support bar, upper support mechanism, axial scanning and searching mechanism, circumferential scanning and searching mechanism, lower support mechanism and foreign matter collection mechanism, post upper is fixed with upper support mechanism and expansion link, lower end is fixed with lower support mechanism and foreign matter collection mechanism, be provided with axial scanning and searching mechanism and circumferential scanning and searching mechanism on the support bar between upper support mechanism and lower support mechanism, wherein, expansion link is positioned at the top of support bar, itself and support bar are the loop bar structure, but expansion link upward sliding, the supporting boot driven in upper support mechanism outwards stretches, itself and nozzle inner wall are fitted fully, realize the axial and circumferential location of this testing fixture, upper support mechanism drives lower support mechanism by steel wire, and the compression boots in lower support mechanism are outwards launched, and the foreign matter collection mechanism of installing in lower support mechanism can launch with the stretching, extension that compresses boots, realizes the collecting function to the upper end foreign matter, be provided with axial scanning and searching mechanism on support bar, and axially the end of scanning and searching mechanism is equipped with the axial probe pallet, axially scanning and searching mechanism drives the screw mandrel rotation by drive motor by gear pair, and drives the nut axially-movable, realizes axial scanning, also be provided with circumferential scanning and searching mechanism on support bar, it can circumferentially rotate along support bar, and the circumferential probe tray that drives circumferential scanning and searching mechanism end rotates, and realizes circumferential scanning.
Described upper support mechanism comprises upper support mechanism slide unit, the upper support mechanism base, supporting boot, pull bar and connecting rod A, wherein, the upper support mechanism base is fixed on support bar, upper support mechanism slide unit is enclosed within on expansion link, and can be by lockable mechanism, that upper support mechanism slide unit is relative with expansion link fixing, supporting boot is connected with the upper support mechanism base by parallelogram lindage, and the connecting rod A on parallelogram lindage is connected with upper support mechanism slide unit by pull bar, when expansion link drive upper support mechanism slide unit is moved upward, upper support mechanism slide unit drives supporting boot by pull bar and outwards launches, and fit fully with nozzle inner wall.
Described lower support mechanism comprises lower support mechanism base, lower support mechanism slide unit and compresses boots, wherein, the lower support mechanism base is fixed on the lower end of support bar, lower support mechanism slide unit is enclosed within on support bar, and lower support mechanism slide unit passes through steel wire, walking around the pulley that is fixed on the support bar lower end is fixedly connected with upper support mechanism slide unit, when upper support mechanism slide unit is moved upward, drive lower support mechanism slide unit by steel wire and move downward, the compression boots that are connected with the lower support mechanism base are outwards launched.
Described foreign matter collection mechanism comprises air bag and umbrella cloth, and wherein, air bag is arranged on and compresses on boots, and the bottom that compresses boots is equipped with umbrella cloth, and, when airbag aeration after, umbrella cloth and adapter tube wall is fully fitted.
In described lower support mechanism, several springs are installed, when upper support mechanism is closed, automatically close by the spring which is provided with in lower support mechanism.
Described circumferential scanning and searching mechanism comprises circumferential gear, circumferential gear ring, circumferential movement turntable and probe tray mechanism, wherein, the circumferential movement turntable is enclosed within on support bar, and on ring, circumferential gear ring is installed in the circumferential movement turntable, the circumferential gear of installing at the circumferential movement turntable is driving time rotational by motor, drive the circumferential movement turntable and revolve round the sun around circumferential gear ring, realize being arranged on the circumferential scanning of probe tray mechanism on the circumferential movement turntable.
Described probe tray mechanism comprises that sliding screw and nut, double rocker mechanism comprise crank block, connecting rod B and pallet connecting rod and circumferential probe tray, circumferentially probe tray is connected with the circumferential movement turntable by three parallel pallet connecting rods, and the pallet connecting rod is by connected connecting rod B, drive the pallet connecting rod swings between 0 ° and 90 °, wherein, the other end of connecting rod B is connected with crank block, and crank block be arranged on the circumferential movement turntable on sliding screw and the nut on nut be connected; When circumferential probe tray will be opened, the motor of installing on the circumferential movement turntable drives the leading screw rotation of sliding screw and nut, thereby drive, nut moves down and relative this nut rotation of driving crank slide block, crank block drivening rod B, connecting rod B drives the pallet connecting rod and swings between 0 ° and 90 °, realizes opening and regaining of circumferential probe tray.
Remarkable result of the present utility model is: a kind of steam generator welding inspection of adapter device described in the utility model is when original state, upper support mechanism, probe tray mechanism and lower support mechanism and foreign matter collection device are all in rounding state, its radial dimension can meet access manhole's requirement, and in working order the time, upper support mechanism, probe tray mechanism and lower support mechanism and foreign matter collection device are in open configuration, and it is radially fitted with nozzle inner wall; Supporting boot by upper support mechanism and closure plate boss contacts and compress with hole surface only, realize that the axial and circumferential of testing fixture are located; Simultaneously, umbrella cloth and the air bag in lower support mechanism and foreign matter collection device, arranged, realized testing fixture and the isolation of taking over bottom, played the effect of foreign matter collection, as the supporting mechanism of testing fixture lower end, improved the stationarity of testing fixture in the scanning process simultaneously; Expansion link, upper support mechanism and lower support mechanism and foreign matter collection device provide former driving force by same driving mechanism, have reduced the driving link, have reduced equipment self-weight.
The accompanying drawing explanation
Fig. 1 is a kind of steam generator welding inspection of adapter apparatus structure schematic diagram described in the utility model;
Fig. 2 is circumferentially scanning and searching mechanism and circumferentially probe tray mechanism structure schematic diagram in Fig. 1;
In figure: 1, support bar; 2, expansion link; 3, upper support mechanism slide unit; 4, upper support mechanism base; 5, supporting boot; 6, pull bar; 7, connecting rod A; 8, axial scanning and searching mechanism; 9, circumferential scanning and searching mechanism; 10, steel wire; 11, lower support mechanism slide unit; 12, lower support mechanism base; 13, air bag; 14, compress boots; 15, umbrella cloth; 16, pulley; 17, axial probe pallet; 18, circumferential gear; 19, circumferential gear ring; 20, circumferential movement turntable; 21, lead screw and nut; 22, crank block; 23, connecting rod B; 24, pallet connecting rod; 25, circumferential probe tray; 26, lockable mechanism.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, a kind of steam generator welding inspection of adapter device, comprise support bar 1, upper support mechanism, axial scanning and searching mechanism 8, circumferential scanning and searching mechanism 9, lower support mechanism and foreign matter collection mechanism, wherein, support bar 1 is hollow round bar structure, its upper end is fixed with upper support mechanism and expansion link 2, and lower end is fixed with lower support mechanism and foreign matter collection mechanism, is provided with axial scanning and searching mechanism 8 and circumferential scanning and searching mechanism 9 on the support bar 1 between upper support mechanism and lower support mechanism, expansion link 2 is positioned at the top of support bar 1, between itself and support bar 1, is the loop bar structure, and expansion link 2 can, with respect to support bar 1 relative sliding, be realized the flexible of expansion link 2, upper support mechanism comprises upper support mechanism slide unit 3, upper support mechanism base 4, supporting boot 5, pull bar 6 and connecting rod A7, wherein, upper support mechanism base 4 is fixed on support bar 1, upper support mechanism slide unit 3 is enclosed within on expansion link 2, and can be by lockable mechanism 26, that upper support mechanism slide unit 3 is relative with expansion link 2 fixing, supporting boot 5 is connected with upper support mechanism base 4 by parallelogram lindage, and the connecting rod A7 on parallelogram lindage is connected with upper support mechanism slide unit 3 by pull bar 6, when expansion link 2 drive upper support mechanism slide units 3 are moved upward, upper support mechanism slide unit 3 drives supporting boot 5 by pull bar 6 and outwards launches, and fit fully with nozzle inner wall, wherein, supporting boot 5 with take over boss side surfaces and only hole surface contact, realize the axial and circumferential location of testing fixture integral body, the lower support mechanism of installing in support bar 1 lower end comprises lower support mechanism base 12, lower support mechanism slide unit 11 and compression boots 14, wherein, lower support mechanism base 12 is fixed on the lower end of support bar 1, lower support mechanism slide unit 11 is enclosed within on support bar 1, and lower support mechanism slide unit 11 is by steel wire 10, walking around the pulley 16 that is fixed on support bar 1 lower end is fixedly connected with upper support mechanism slide unit 3, upper support mechanism slide unit 3 is moved upward, driving lower support mechanism slide unit 11 by steel wire 10 moves downward, the compression boots 14 that are connected with lower support mechanism base 12 are outwards launched, foreign matter collection mechanism comprises air bag 13 and umbrella cloth 15, and wherein, air bag 13 is arranged on and compresses on boots 14, and the bottom that compresses boots 14 is equipped with umbrella cloth 15, and, after air bag 13 inflations, umbrella cloth 15 and adapter tube wall is fully fitted, several springs are installed in lower support mechanism, and when upper support mechanism is closed, lower support mechanism can close simultaneously, axial scanning and searching mechanism 8 is installed on support bar 1, and axially the end of scanning and searching mechanism 8 is equipped with axial probe pallet 17, axially scanning and searching mechanism 8 drives the screw mandrel rotation by drive motor by gear pair, and drives the nut axially-movable, realizes axial scanning, circumferentially scanning and searching mechanism 9 comprises circumferential gear 18, circumferential gear ring 19, circumferential movement turntable 20 and probe tray mechanism, wherein, circumferential movement turntable 20 is enclosed within on support bar 1, and circumferential gear ring 19 is installed on the interior ring of circumferential movement turntable 20, the circumferential gear 18 of installing at circumferential movement turntable 1 is driving time rotational by motor, drive circumferential movement turntable 20 around circumferential gear ring 19 revolution, realization is arranged on the circumferential scanning of probe tray mechanism on circumferential movement turntable 20, wherein, probe tray mechanism comprises sliding screw and nut 21, double rocker mechanism comprises fork 22, connecting rod B23 and pallet connecting rod 24 and circumferential probe tray 25, circumferentially probe tray 25 is connected with circumferential movement turntable 20 by three parallel pallet connecting rods 24, and pallet connecting rod 24 is by connected connecting rod B23, drive pallet connecting rod 24 swings between 0 ° and 90 °, wherein, the other end of connecting rod B23 is connected with crank block 22, and crank block 22 be arranged on circumferential movement turntable 20 on sliding screw and the nut on nut 21 be connected, when circumferential probe tray 25 will be opened, the motor of installing on circumferential movement turntable 20 drives the leading screw rotation of sliding screw and nut 21, thereby drive, nut moves down and relative this nut rotation of driving crank slide block 22, crank block 22 drivening rod B23, connecting rod B23 drives pallet connecting rod 24 and swings between 0 ° and 90 °, realizes opening and regaining of circumferential probe tray 25.

Claims (7)

1. a steam generator welding inspection of adapter device, it is characterized in that: this testing fixture comprises support bar (1), upper support mechanism, axial scanning and searching mechanism (8), circumferential scanning and searching mechanism (9), lower support mechanism and foreign matter collection mechanism, support bar (1) upper end is fixed with upper support mechanism and expansion link (2), lower end is fixed with lower support mechanism and foreign matter collection mechanism, be provided with axial scanning and searching mechanism (8) and circumferential scanning and searching mechanism (9) on the support bar (1) between upper support mechanism and lower support mechanism, wherein, expansion link (2) is positioned at the top of support bar (1), itself and support bar (1) are the loop bar structure, expansion link (2) but upward sliding, the supporting boot (5) driven in upper support mechanism outwards stretches, itself and nozzle inner wall are fitted fully, realize the axial and circumferential location of this testing fixture, upper support mechanism drives lower support mechanism by steel wire (10), compression boots (14) in lower support mechanism are outwards launched, and the foreign matter collection mechanism of installing in lower support mechanism can launch with the stretching, extension that compresses boots (14), realizes the collecting function to the upper end foreign matter, be provided with axial scanning and searching mechanism (8) on support bar (1), and axially the end of scanning and searching mechanism (8) is equipped with axial probe pallet (17), axially scanning and searching mechanism (8) drives the screw mandrel rotation by drive motor by gear pair, and drives the nut axially-movable, realizes axial scanning, also be provided with circumferential scanning and searching mechanism (9) on support bar (1), it can circumferentially rotate along support bar (1), and the circumferential probe tray (25) that drives circumferential scanning and searching mechanism (9) end rotates, and realizes circumferential scanning.
2. a kind of steam generator welding inspection of adapter device according to claim 1, it is characterized in that: described upper support mechanism comprises upper support mechanism slide unit (3), upper support mechanism base (4), supporting boot (5), pull bar (6) and connecting rod A(7), wherein, upper support mechanism base (4) is fixed on support bar (1), upper support mechanism slide unit (3) is enclosed within on expansion link (2), and it is relative fixing with expansion link (2) by upper support mechanism slide unit (3) to pass through lockable mechanism (26), supporting boot (5) is connected with upper support mechanism base (4) by parallelogram lindage, and the connecting rod A(7 on parallelogram lindage) by pull bar (6), with upper support mechanism slide unit (3), be connected, make expansion link (2) drive upper support mechanism slide unit (3) while moving upward, upper support mechanism slide unit (3) drives supporting boot (5) by pull bar (6) and outwards launches, and fit fully with nozzle inner wall.
3. a kind of steam generator welding inspection of adapter device according to claim 1, it is characterized in that: described lower support mechanism comprises lower support mechanism base (12), lower support mechanism slide unit (11) and compression boots (14), wherein, lower support mechanism base (12) is fixed on the lower end of support bar (1), lower support mechanism slide unit (11) is enclosed within on support bar (1), and lower support mechanism slide unit (11) is by steel wire (10), walking around the pulley (16) that is fixed on support bar (1) lower end is fixedly connected with upper support mechanism slide unit (3), make upper support mechanism slide unit (3) while moving upward, driving lower support mechanism slide unit (11) by steel wire (10) moves downward, the compression boots (14) that are connected with lower support mechanism base (12) are outwards launched.
4. a kind of steam generator welding inspection of adapter device according to claim 1, it is characterized in that: described foreign matter collection mechanism comprises air bag (13) and umbrella cloth (15), wherein, air bag (13) is arranged on and compresses on boots (14), and the bottom that compresses boots (14) is equipped with umbrella cloth (15), and, after air bag (13) inflation, umbrella cloth (15) and adapter tube wall are fully fitted.
5. according to the described a kind of steam generator welding inspection of adapter device of claim 1 or 3, it is characterized in that: in described lower support mechanism, several springs are installed, when upper support mechanism is closed, in lower support mechanism, by the spring which is provided with, automatically close.
6. a kind of steam generator welding inspection of adapter device according to claim 1, it is characterized in that: described circumferential scanning and searching mechanism (9) comprises circumferential gear (18), circumferential gear ring (19), circumferential movement turntable (20) and probe tray mechanism, wherein, circumferential movement turntable (20) is enclosed within on support bar (1), and on ring, circumferential gear ring (19) is installed in circumferential movement turntable (20), the circumferential gear (18) of installing at circumferential movement turntable (1) is driving time rotational by motor, driving circumferential movement turntable (20) revolves round the sun around circumferential gear ring (19), realization is arranged on the circumferential scanning of probe tray mechanism on circumferential movement turntable (20).
7. a kind of steam generator welding inspection of adapter device according to claim 6, it is characterized in that: described probe tray mechanism comprises sliding screw and nut (21), double rocker mechanism comprises crank block (22), connecting rod B(23) and pallet connecting rod (24) and circumferential probe tray (25), circumferentially probe tray (25) is connected with circumferential movement turntable (20) by three parallel pallet connecting rods (24), and pallet connecting rod (24) is by connected connecting rod B(23), drive pallet connecting rod (24) swings between 0 ° and 90 °, wherein, connecting rod B(23) the other end is connected with crank block (22), and crank block (22) be arranged on circumferential movement turntable (20) on sliding screw and the nut on nut (21) be connected, when circumferential probe tray (25) will be opened, the upper motor of installing of circumferential movement turntable (20) drives the leading screw rotation of sliding screw and nut (21), thereby drive that nut moves down and driving crank slide block (22) this nut rotation relatively, crank block (22) drivening rod B(23), connecting rod B(23) drive pallet connecting rod (24) and swing between 0 ° and 90 °, realize opening and regaining of circumferential probe tray (25).
CN201320287516XU 2013-05-24 2013-05-24 Testing device for welded joints of steam generator adapter tube Withdrawn - After Issue CN203338772U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861540A (en) * 2014-03-31 2014-06-18 衢州图艺工业设计有限公司 Cross-brace type reaction kettle maintenance device
CN104183289A (en) * 2013-05-24 2014-12-03 核动力运行研究所 Testing device for welded joints of steam generator adapter tube
CN109975421A (en) * 2017-12-27 2019-07-05 核动力运行研究所 A kind of synchronous expanded configuration of two sides probe for inner wall of the pipe ultrasonic examination
CN110146597A (en) * 2019-06-04 2019-08-20 国核电站运行服务技术有限公司 Adapter tube butt weld inner wall ultrasound detection head

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104183289A (en) * 2013-05-24 2014-12-03 核动力运行研究所 Testing device for welded joints of steam generator adapter tube
CN104183289B (en) * 2013-05-24 2017-05-17 核动力运行研究所 Testing device for welded joints of steam generator adapter tube
CN103861540A (en) * 2014-03-31 2014-06-18 衢州图艺工业设计有限公司 Cross-brace type reaction kettle maintenance device
CN109975421A (en) * 2017-12-27 2019-07-05 核动力运行研究所 A kind of synchronous expanded configuration of two sides probe for inner wall of the pipe ultrasonic examination
CN109975421B (en) * 2017-12-27 2024-02-09 核动力运行研究所 Synchronous opening structure of probes on two sides for ultrasonic inspection of inner wall of pipeline
CN110146597A (en) * 2019-06-04 2019-08-20 国核电站运行服务技术有限公司 Adapter tube butt weld inner wall ultrasound detection head

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AV01 Patent right actively abandoned
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Granted publication date: 20131211

Effective date of abandoning: 20170517