CN103985425B - Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device - Google Patents
Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device Download PDFInfo
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- CN103985425B CN103985425B CN201410233804.6A CN201410233804A CN103985425B CN 103985425 B CN103985425 B CN 103985425B CN 201410233804 A CN201410233804 A CN 201410233804A CN 103985425 B CN103985425 B CN 103985425B
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- screwed hole
- pressure container
- wiper blade
- container flange
- reactor pressure
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device, it includes body, checks arm, probe mechanism and air bubble eliminating device, and air bubble eliminating device includes wiping pedestal, has resilient wiper blade.The present invention installs air bubble eliminating device below probe mechanism additional, it is not only simple in structure, can be as standalone module, it is directly mounted on the inspection arm of reactor pressure vessel checking machine and checks, and the generation of junk can be avoided, prevent foreign matter from entering the situation of reactor, margin of safety improves, air bubble eliminating device has certain flexibility safe distance adaptation function simultaneously, prevent the situation of wiper blade contact tension damage equipment, and then significantly get rid of bubble and the foreign matter impact on ultrasonic signal, reduce workload and the degree of accuracy of increase signal that field data is checked.
Description
Technical field
The present invention relates to a kind of ultrasonic scanning device, particularly to a kind of nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device.
Background technology
Nuclear reactor pressure container is one of of paramount importance parts of nuclear power station, is used for fixing, supports and contains reactor core and all in-pile components, is large component the most non-exchange in nuclear power plant's phase in whole longevity.The quality of nuclear reactor pressure container is to ensure that Nuclear Power System is normal, the key of safe operation.
For determining the quality of nuclear reactor pressure container, in nuclear power plant and the inspection specification of nuclear power unit and outline, each weld seam on pressure vessel and other position are proposed the Compulsory Feature of Non-Destructive Testing, and pressure vessel is implemented to use as a servant front and inservice inspection before putting into operation and after running intervals by appointment respectively.Before labour, the result with inservice inspection is that the state analyzing pressure vessel provides extremely important foundation.
Present invention ultrasonic method before the labour of the flange screwed hole of nuclear power plant reactor pressure vessel and during inservice inspection, water logging mode is used to implement scanning above flange, the type is ultrasonic when being necessary to ensure that scanning, and flange surface does not has the impact of bubble and floating foreign body, so ultrasonic signal could correctly focus on, and in inspection area along the direction refraction set, thus discovered whether the defect such as crackle or foreign matter, it is ensured that power station put into operation after safe mass.
In container in primary Ioops water, because of reasons such as temperature changes, causing to gather many tiny bubbles in flange surface, the air in bubble will produce deviation to the refraction path of ultrasonic signal；Meanwhile, the most in-service before, water float thing is more, it is easy to be deposited on flange surface, ultrasound data acquisition end can produce more interference display, affect the readability of signal and increase the detection time, and final analysis is caused difficulty.
The bubble produced for flange surface, when the preservice inspection in power station, can use the artificial method driving away bubble in advance, but when inservice inspection is implemented in power station, and due to strong radiation environment and the fuller impact of water level, personnel cannot arrive at；For deposition or floating foreign body, need the mode by video during field conduct, this orientation is carried out repeatedly scanning and confirmation, extends review time and unnecessary repetition measure.
For case above, the present invention has removal flange blibbing and the function of foreign matter, ends the applying date, and the equipment that is not yet found to have in field carries out invention design for this situation.
Present is to implementing to check the following several schemes of main employing herein: 1. manual examination (check): use the mode of hand hold transducer tool rack.This mode, because of the factor such as the mode impact of site environment dosage, personnel's experience and harvester, checks that result has and cannot store and the shortcoming such as reproduction, it is often more important that on-the-spot also easily cause foreign matter and falls into the risk of reactor；And when checking due to nuclear power plant reactor pressure vessel, having the features such as high radiativity, what personnel should be the fewest is in scene.The most independent scanner: this kind of mode structure is complicated, adds Innovation Input, and equipment needs to separately maintain, and has foreign body falling equivalent risk the most equally.PIMZOR and TAMZOR of such as TECNATOM design.The equipment that is not yet found to have in this area at present carries out invention design for this situation.
Summary of the invention
It is an object of the invention to provide a kind of nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device that can have and drive away bubble function.
nullFor solving above-mentioned technical problem，The present invention adopts the following technical scheme that a kind of nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device，Screwed hole is checked from the screwed hole face of pressure container flange by it，It include can circumferentially rotatable with own axes for rotating shaft and can along axis move up and down body、The inspection arm that one end is vertically connected on the sidewall of described body and can stretch along its rotor shaft direction vertical、It is arranged on the probe mechanism on the other end of described inspection arm，Described probe mechanism includes the base being provided with for screwed hole carries out checking ultrasonic probe，Described base is paralleled with pressure container flange screwed hole face，Its face relative with the screwed hole face of pressure container flange is lower surface，It also includes the air bubble eliminating device being installed on the lower surface of described base，Described air bubble eliminating device includes the wiping pedestal being connected with the lower surface of described base、The most a piece of it be arranged in described wiping pedestal and have resilient wiper blade，When bubble removing and inspection screwed hole，Described wiper blade pushes against on screwed hole face，Ultrasonic probe and screwed hole face from.
Optimizing, the lower half of every described wiper blade is first-class spaced is provided with a plurality of gap.
Optimize, described wiping pedestal is in T shape, it is by transverse plate and is vertically connected on the longitudinal plate in the middle part of it and forms, two pieces of parallel clamping plate it are additionally provided with on described transverse plate lower surface, described clamping plate downwardly extend along the direction of its lower surface vertical, and described wiper blade is arranged between two pieces of described clamping plate.
Further, being arranged with wiper blade described in two panels between two pieces of described clamping plate, be additionally provided with the resilient float support plate of tool described in two panels between wiper blade, described wiper blade downwardly extends and exceedes described clamping plate and described float support plate.
Further, described wiper blade is fixed on described float support plate, is connected the spring having for buffering between described float support plate with described transverse plate lower surface.
Further, the end face that described float support plate is relative with described transverse plate lower surface is its upper surface, the face relative with this upper surface is its lower surface, groove is offered on the upper surface of described float support plate, it is equipped with, on the upper and lower end face of described float support plate, the bolt being slidably connected with its phase, the end of thread of described bolt is threadeded mutually with described transverse plate lower surface, and described spring housing is located on described bolt and is arranged in described groove.
Optimizing, described probe mechanism also includes the installing plate being connected on the described inspection arm other end, the lower surface of described installing plate is provided with and connects its rotary joint with described base, and the rotating shaft of described rotary joint is paralleled with the rotating shaft of body.
The beneficial effects of the present invention is: the present invention installs air bubble eliminating device on base additional, it is not only simple in structure, can be as standalone module, it is directly mounted on the inspection arm of reactor pressure vessel checking machine and checks, and the generation of junk can be avoided, prevent foreign matter from entering the situation of reactor, margin of safety improves, air bubble eliminating device has certain flexibility safe distance adaptation function simultaneously, prevent the situation of wiper blade contact tension damage equipment, and then significantly get rid of bubble and the foreign matter impact on ultrasonic signal, reduce the workload that field data is checked and the degree of accuracy increasing signal.
Accompanying drawing explanation
Accompanying drawing 1 is nuclear power plant reactor pressure container flange section cylinder schematic diagram；
Accompanying drawing 2 is the top view of accompanying drawing 1；
State and the schematic diagram in bubble removing region when accompanying drawing 3 is the bubble removing of this device；
State and the schematic diagram of scanning zone when accompanying drawing 4 is the scanning of this device；
Accompanying drawing 5 is the explosive view of air bubble eliminating device；
Accompanying drawing 6 is the front view of air bubble eliminating device；
Accompanying drawing 7 is the three-dimensional view of probe mechanism；
In accompanying drawing: 1, body；2, arm is checked；3, probe mechanism；4, flange face contact region；5, flange sealing surface；6, screwed hole；7, pressure container flange；8, scanning zone；9, bubble removing region；31, base；32, air bubble eliminating device；33, installing plate；34, rotary joint；311, ultrasonic probe；321, wiping pedestal；322, wiper blade；323, float support plate；324, spring；325, groove；326, bolt；3211, transverse plate；3212, longitudinal plate；3213, clamping plate.
Detailed description of the invention
The present invention is described in detail below by the embodiment shown in below in conjunction with the accompanying drawings:
This nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device, as shown in Figure 1, 2, screwed hole 6 is checked from the screwed hole face of pressure container flange by it, as shown in Figure 3, it includes generally cylindrical body 1, the inspection arm 2 that one end is vertically connected on the sidewall of body 1, the probe mechanism 3 being arranged on the other end of inspection arm 2 and air bubble eliminating device 32, body 1 can be circumferentially rotatable with own axes for rotating shaft and can move up and down along axis, checks that arm 2 can stretch along its rotor shaft direction vertical.
As shown in Figure 7, probe mechanism 3 includes the base 31 being provided with ultrasonic probe 311, it is connected to check the installing plate 33 on arm 2 other end, connect the rotary joint 34 of installing plate 33 and base 31, base 31 is made up of lucite and it is paralleled with the screwed hole face of pressure container flange, its face relative with the screwed hole face of pressure container flange is its lower surface, installing plate 33 includes and checks that arm 2 end is fixedly connected and the riser perpendicular with it and the transverse slat perpendicular with riser, rotary joint 34 is arranged on the lower surface of transverse slat, the lower end of rotary joint 34 is fixedly connected with the upper surface of base 31, the pivot center of rotary joint 34 is paralleled with the pivot center of body 1.
Ultrasonic probe 311 can have multiple, and in the present embodiment, ultrasonic probe 311 has one, and it, for checking flange face screwed hole, i.e. carries out scanning to scanning zone in Fig. 48.
As shown in Figure 5,6, air bubble eliminating device 32 includes the wiper blade 322 that wiping pedestal 321, two panels are arranged in wiping pedestal 321, the float support plate 323 being arranged between two panels wiper blade 322.Wiping pedestal 321 is in T shape, and it is by transverse plate 3211 and is vertically connected on the longitudinal plate 3212 in the middle part of it and forms, and transverse plate 3211 lower surface is additionally provided with two pieces of parallel clamping plate 3213, and clamping plate 3213 downwardly extend along the direction of its lower surface vertical.Two panels wiper blade 322 is arranged on the both sides of float support plate 323 and is arranged in together with float support plate 323 between two clamping plates 3213, the end face that float support plate 323 is relative with transverse plate 3211 lower surface is its upper surface, the face relative with this upper surface is its lower surface, groove 325 is offered on the upper surface of float support plate 323, the bolt 326 being slidably connected with its phase it is equipped with on the upper and lower end face of float support plate 323, the end of thread of bolt 326 is threadeded mutually with transverse plate 3211 lower surface, the spring 324 for buffering it is arranged with on bolt 326, spring 324 is arranged in groove 325, certain buffer distance is there is between itself and transverse plate 3211 lower surface.The length direction of wiper blade 322 is paralleled with the arragement direction of ultrasonic probe 311.Wiper blade 322 and float support plate 323 are made by polyurethane, and it can bear certain amount of radiation and have certain elasticity, are effectively prevented the situation of wiper blade contact tension damage equipment.Base 31 lower surface is 60mm to the distance of the lower surface of float support plate 323, and wiper blade 322 stretches out a length of 20mm of groove that two clamping plates 3213 is formed, therefore, at bubble removing with when checking screwed hole, can guarantee that ultrasonic probe 311 and screwed hole face from.Bubble removing region 9 is as shown in Figure 3, during normally wiping bubble off, two sides relying primarily on wiper blade 322 carry out secondary wiping, the lower half of the wiper blade 322 of every is first-class spaced is provided with a plurality of gap, wiper blade 322 the latter half is divided into some sections, and the gap in two pieces of wiper blade 322 is staggered, it is further ensured that removing out air bubble apparatus 32 does not wipes phenomenon firmly with flange surface generation.The lucite position installed due to probe belongs to breakable member, so the most not by contact load.
To sum up, the invention have the advantages that
1, air bubble eliminating device simple in construction, only need to increase 4 threaded securing bores positions (internally installed thread bush) on ring flange newly, do not affect installation and the signal scanning of former ultrasonic probe, the dismounting from rotary joint of the whole ring flange is not produced and interfere, it is alternatively arranged as standalone module, is directly mounted on the inspection arm of reactor pressure vessel checking machine and checks；
2, can avoid the generation of junk, prevent foreign matter from entering the situation of reactor, margin of safety improves；
3, drive away bubble function and there is certain flexibility safe distance adaptation function, prevent the situation of wiper blade contact tension damage equipment；The function driving away bubble and ultrasonic scan can simultaneously or independently be carried out, and is independent of each other mutually；
4, notable eliminating bubble and the foreign matter impact on ultrasonic signal, reduces the workload that field data is checked and the degree of accuracy increasing signal；
5, wiper blade and float support plate are made by polyurethane, without halogen, it is possible to resistance to boric acid；
6, rotate a circle and can complete threaded interior hole scanning.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to present invention spirit or modification, all should contain within protection scope of the present invention.
Claims (6)
- null1. a nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device，Screwed hole is checked above the screwed hole face of pressure container flange by it，It include can circumferentially rotatable with own axes for rotating shaft and can along axis move up and down body (1)、The inspection arm (2) that one end is vertically connected on the sidewall of described body (1) and can stretch along its rotor shaft direction vertical、It is arranged on the probe mechanism (3) on the other end of described inspection arm (2)，Described probe mechanism (3) includes the base (31) being provided with the ultrasonic probe (311) for checking screwed hole，Described base (31) is paralleled with pressure container flange screwed hole face，Its face relative with the screwed hole face of pressure container flange is lower surface，It is characterized in that: it also includes the air bubble eliminating device (32) being installed on the lower surface of described base (31)，Described air bubble eliminating device (32) includes the wiping pedestal (321) being connected with the lower surface of described base (31)、The most a piece of it be arranged in described wiping pedestal (321) and have resilient wiper blade (322)，When bubble removing and inspection screwed hole，Described wiper blade (322) pushes against on screwed hole face，Ultrasonic probe (311) and screwed hole face from，Described probe mechanism (3) also includes the installing plate (33) being connected on described inspection arm (2) other end，It is provided with on the lower surface of described installing plate (33) and connects its rotary joint (34) with described base (31)，The rotating shaft of described rotary joint (34) is paralleled with the rotating shaft of body (1).
- Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device the most according to claim 1, it is characterised in that: the lower half of every described wiper blade (322) is first-class spaced is provided with a plurality of gap.
- Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device the most according to claim 1, it is characterized in that: described wiping pedestal (321) is in T shape, it is by transverse plate (3211) and is vertically connected on the longitudinal plate (3212) in the middle part of it and forms, two pieces of parallel clamping plate (3213) it are additionally provided with on described transverse plate (3211) lower surface, described clamping plate (3213) downwardly extend along the direction of its lower surface vertical, and described wiper blade (322) is arranged between two pieces of described clamping plate (3213).
- Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device the most according to claim 3, it is characterized in that: between two pieces of described clamping plate (3213), be arranged with wiper blade described in two panels (322), being additionally provided with the resilient float support plate (323) of tool between wiper blade described in two panels (322), described wiper blade (322) downwardly extends and exceedes described clamping plate (3213) and described float support plate (323).
- Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device the most according to claim 4, it is characterized in that: described wiper blade (322) is fixed on described float support plate (323), between described float support plate (323) and described transverse plate (3211) lower surface, be connected the spring (324) having for buffering.
- Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device the most according to claim 5, it is characterized in that: described float support plate (323) end face relative with described transverse plate (3211) lower surface is its upper surface, the face relative with this upper surface is its lower surface, groove (325) is offered on the upper surface of described float support plate (323), the bolt (326) being slidably connected with its phase it is equipped with on the upper and lower end face of described float support plate (323), the end of thread of described bolt (326) is threadeded mutually with described transverse plate (3211) lower surface, described spring (324) is set in described bolt (326) and above and is arranged in described groove (325).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233804.6A CN103985425B (en) | 2014-05-29 | 2014-05-29 | Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233804.6A CN103985425B (en) | 2014-05-29 | 2014-05-29 | Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device |
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| Publication Number | Publication Date |
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| CN103985425A CN103985425A (en) | 2014-08-13 |
| CN103985425B true CN103985425B (en) | 2016-08-17 |
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| CN201410233804.6A Active CN103985425B (en) | 2014-05-29 | 2014-05-29 | Nuclear power plant reactor pressure container flange screwed hole ultrasonic scanning device |
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| CN105679385B (en) * | 2014-11-20 | 2017-12-29 | 中广核工程有限公司 | Transportable reaction core pressure vessel kingbolt hole video check instrument |
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| JPS58203032A (en) * | 1982-05-21 | 1983-11-26 | Hitachi Ltd | Manufacture of rubber elastic die |
| JPH01235848A (en) * | 1988-03-17 | 1989-09-20 | Kawasaki Steel Corp | Method and apparatus for ultrasonic flaw detection of screw thread in joint part of pipe |
| JPH02118449A (en) * | 1988-10-28 | 1990-05-02 | Hitachi Ltd | Ultrasonic flaw detecting device |
| CN2299317Y (en) * | 1997-07-22 | 1998-12-02 | 四川电力试验研究院 | Mechanical scanning device for ultrasonic harmless flaw detector |
| US9439571B2 (en) * | 2006-01-20 | 2016-09-13 | Washington University | Photoacoustic and thermoacoustic tomography for breast imaging |
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