CN204203170U - Dividing plate main weld detection system - Google Patents
Dividing plate main weld detection system Download PDFInfo
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- CN204203170U CN204203170U CN201420749957.1U CN201420749957U CN204203170U CN 204203170 U CN204203170 U CN 204203170U CN 201420749957 U CN201420749957 U CN 201420749957U CN 204203170 U CN204203170 U CN 204203170U
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- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 239000000523 sample Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000000034 method Methods 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 10
- 230000007547 defect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a kind of dividing plate main weld detection system.Dividing plate main weld detection system comprises: main frame; Driving mechanism, is arranged on described main frame and also can drives described main frame automatic moving; Curvature regulates turning axle, is hinged on described main frame; Detecting module, is connected to described curvature and regulates on turning axle; Described detecting module comprises: voussoir and the probe be pushed against on described voussoir, and described probe is linear array probe, and described voussoir has the curved surface workplace consistent with dividing plate curvature to be detected; Position recording device, is arranged on described driving mechanism.The utility model improves detection efficiency, reduces labour intensity.
Description
Technical field
The utility model relates to the detection field of steam turbine high pressure dividing plate, is specifically related to a kind of dividing plate main weld detection system.
Background technology
Steam turbine high pressure dividing plate main weld due to partition body thickness large, welded gaps is little, cause welding difficulty large, easily occur weld defects, dividing plate subjects high temperature, gas shock, vibration and pressure differential in unit running process, and the defect existed in manufacture process is easy to expand, dividing plate is caused to be out of shape, to come off, leave hidden trouble to unit operation, unit time serious, can be caused non-ly to stop, rotor scraps, cause huge economic loss to applying unit.
Detection at present for high pressure dividing plate main weld inherent vice has two kinds of situations, and one is that butt welded seam inherent vice does not detect; One method uses conventional Ultrasound detection method butt welded seam inherent vice to detect.Use conventional Ultrasound detection method butt welded seam inherent vice is detected, this method uses monocrystalline or twin lamella compressional wave normal probe, probe is directly placed on dividing plate outer arc or inner arcuate surface moves, the A sweep signal of testing staff's optical viewer, therefrom differentiates flaw echo simultaneously.
In sum, there is following problem in prior art: manual detection efficiency is low, easily cause undetected.
Utility model content
The utility model provides a kind of dividing plate main weld detection system, and to solve in Ultrasonic Detection, manual detection efficiency is low, easily causes undetected problem.
For this reason, the utility model proposes a kind of dividing plate main weld detection system, described dividing plate main weld detection system comprises:
Main frame;
Driving mechanism, is arranged on described main frame and also can drives described main frame automatic moving;
Curvature regulates turning axle, is hinged on described main frame;
Detecting module, is connected to described curvature and regulates on turning axle;
Described detecting module comprises: voussoir and the probe be pushed against on described voussoir, and described probe is linear array probe, and described voussoir has the curved surface workplace consistent with dividing plate curvature to be detected;
Position recording device, is arranged on described driving mechanism.
Further, described dividing plate main weld detection system also comprises: couplant supply and control module, connect described probe.
Further, described position recording device comprises: scrambler;
Described driving mechanism comprises:
Motor, is arranged on described main frame;
Magnetic driving wheel, is arranged on and described main frame is connected with described motor and is positioned at the bottom of described main frame;
Magnetic engaged wheel, is arranged on and described main frame is connected with described magnetic driving wheel and is positioned at the bottom of described main frame;
Driving gear set, to be arranged on described main frame and to be connected between described magnetic engaged wheel and described scrambler.
Further, described curvature regulates the number of turning axle to be two, and two described curvature regulate turning axle be arranged in parallel and lay respectively on described main frame, and the number of described detecting module is two, and the investigative range of two described detecting modules not exclusively overlaps.
Further, described dividing plate main weld detection system also comprises: phased array detector, connects described position recording device and described probe.
Further, described dividing plate main weld detection system also comprises: compress torsion spring, be connected between described voussoir and described main frame.
Further, described dividing plate main weld detection system also comprises:
Traversing framework, connects described curvature and regulates turning axle;
Traversing rack guide rail, is arranged on described traversing framework;
Traversing bearing seat, to be arranged on described traversing rack guide rail and to connect described voussoir;
Traversing knob, connects described traversing bearing seat, and by the turn of described traversing knob, described traversing bearing seat is traversing on described traversing rack guide rail.
In the utility model, drive voussoir automatic moving on dividing plate to be detected to carry out scanning by driving mechanism, achieve the automatic detection of dividing plate main weld, improve detection efficiency, reduce labour intensity, overcome manual detection efficiency low, easily cause undetected problem.
And then the utility model adopts curved surface voussoir, and ensure that the stability of coupling, testing result is reproducible.The utility model adopts linear array probe, adds the region that a scanning can detect, improves work efficiency.The utility model adopts phased-array technique to realize detecting the real time record of data, and detecting data can multiplanar imaging, and intuitive display, various signal easily distinguishes, decreases erroneous judgement.
Accompanying drawing explanation
Fig. 1 is the perspective view of main frame of the present utility model and detecting module;
Fig. 2 is the perspective view that detecting module of the present utility model and curvature regulate turning axle;
Fig. 3 is the perspective view of main frame of the present utility model;
Fig. 4 is the perspective view of driving mechanism of the present utility model;
Fig. 5 shows the perspective view of couplant of the present utility model supply and control module from main apparent direction;
Fig. 6 shows the inside perspective view of couplant of the present utility model supply and control module from main apparent direction.
Drawing reference numeral illustrates:
1- detection module 2- adjust the curvature of the axis of rotation 3- main frame 4- drive mechanism 6- coupling agent supply and control module 11- probe 12- wedge 13- hose fittings 14- wedge clamping frame 15- compression torsion 16- sliding knob 17- sliding bearing 18- pipe fittings 19- universal fittings 21- sliding rack rails 22- sliding frame 24- adjusting the curvature of the plunger 31- handles and curvature adjustment panel 32- On the cover 41- Motor 42- axle 43- transmitting gearset 44- capstan 45- Power Interface 51- driven wheel 52- transmission gear set 53- encoder 54- encoder interface 61- box 62- handle 63- flow control valve 64- Intake 65- water hole 66- Power Switch 67- pump switch 68- motor speed control knob 69- Output Power Interface 610- power transformer 611- motor speed controller 612- pumps
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and the utility model is described.
The utility model proposes a kind of dividing plate main weld detection system, as shown in Figure 1, described dividing plate main weld detection system comprises:
Main frame 3;
Driving mechanism 4, as shown in Figure 4, to be arranged on described main frame 3 and can to drive described main frame 3 automatic moving on dividing plate to be detected, such as, carries out the continuous moving of circumference along the circular arc lateral surface of dividing plate to be detected or medial surface;
Curvature regulates turning axle 2, as depicted in figs. 1 and 2, is hinged on described main frame 3;
Curvature pilot plunger 24, as depicted in figs. 1 and 2, is arranged on described main frame 3, curvature pilot plunger 24 with comprise curvature and regulate the traversing framework 22 of turning axle 2 to be connected, regulate turning axle to be positioned on main frame 3 traversing framework 22 and curvature;
Detecting module 1, is connected to described curvature and regulates on turning axle 2;
As shown in Figure 2, described detecting module 1 comprises: voussoir 12 and the probe 11 be pushed against on described voussoir, and described probe 11 is linear array probe, launches and accepts detection signal; Described voussoir 12 has the curved surface workplace consistent with dividing plate curvature to be detected, namely the curvature of the circumference of voussoir 12 is consistent with dividing plate curvature to be detected, can fit completely with workpiece configurations, ensure the stable coupling in testing process, voussoir 12 is fixed in voussoir gripper frame 14;
Position recording device, is arranged on described driving mechanism 4, carries out the position of recording scanning, such as, and record probe or the position of voussoir 12 in scanning process.
In the utility model, drive voussoir automatic moving on dividing plate to be detected to carry out scanning by driving mechanism, achieve the automatic detection of dividing plate main weld, improve detection efficiency, reduce labour intensity, overcome manual detection efficiency low, easily cause undetected problem.
Further, as shown in Figure 6, described dividing plate main weld detection system also comprises: couplant supply and control module 6, connect described probe 11.As shown in Figure 5, couplant supply and control module 6 comprise casing 61, casing 61 is cuboid, fixing, encapsulation inner structure, be provided separately with main frame 3, couplant supply and control module 6 provide couplant (being such as water), to realize the coupling of testing process by pipeline to detecting module 1.Couplant supply and control module 6 and connect to be formed with driving mechanism 4 by circuit and be connected, the startup of control driving mechanism 4 and the speed of travel of detecting module 1 on examined workpiece (dividing plate).Water pipe head 18 and hose adapter 13, for detecting module 1 provides couplant.Universal pipe joint 19 connects outside water pump, and universal pipe joint communicates with water pipe head 18, and couplant flows out from water pump, by universal pipe joint 19, water pipe head 18, water pipe head 13, finally for voussoir provides couplant.
As shown in Figure 5, couplant supply and control module 6 also comprise: be arranged on the handle 62 on casing 61, be convenient for carrying.Flowrate control valve 63, is arranged on casing 61, and inner water pump therewith operation valve is connected, and can control discharge.Water inlet, is arranged on casing 61, and by water inlet, water pump is from acquisition water source, the external world (couplant).Apopore 65, is arranged on casing 61, water pump by apopore for scanning equipment provides current (couplant).Power switch 66, is arranged on casing 61, controls the power switch of scanning equipment.Pump switch 67, is arranged on casing 61, controls the power switch of water pump.Electric machine speed regulation knob 68 is arranged on casing 61, and electric machine speed regulation knob connects motor internal speed regulator, controls the speed of travel of scanning equipment on examined workpiece by regulating machine governor.Out-put supply interface 69, is arranged on casing 61, gives feeding electric motors after being communicated with power interface 45.As shown in Figure 6, power transformer 610, is arranged on casing 61, external voltage is changed into equipment required voltage.Machine governor 611, is arranged on casing 61, controls motor rotation speed, thus controls the speed of travel of scanning equipment (detecting module).Water pump 612, accepts external source, for scanning equipment provides current.The each water pump water-supply-pipe in water pump 612 both sides, one is that the water inlet pipe of water pump is connected with water inlet 64, and one is that rising pipe is connected with apopore 65, has flowrate control valve 63 before apopore 65, the flow of couplant can be controlled, to adapt to the needs detected by rotary throttle.
Further, as shown in Figure 4, described position recording device comprises: scrambler 53, to realize accurate record;
Described driving mechanism 4 comprises:
Motor 41, is arranged on described main frame, provides power for driving;
Magnetic driving wheel 44, be arranged on and described main frame be connected with described motor and be positioned at the bottom of described main frame, magnetic driving wheel 44 can by magnetic-adsorption on examined workpiece (dividing plate), when magnetic driving wheel 44 rotates, magnetic driving wheel 44 can be walked on workpiece, thus drives whole device to move on workpiece; Wheel shaft 42 is connected with magnetic driving wheel 44, and simultaneously magnet pulley can regulate its position on wheel shaft as required.Driving gear set 43 connects motor and wheel shaft, transmits power; Power interface 45, one end is connected with motor, and one end is connected with power supply, for motor provides electric power;
Magnetic engaged wheel 51, is arranged on and described main frame 3 is connected with described magnetic driving wheel 44 and is positioned at the bottom of described main frame; Magnetic engaged wheel 51 carries out driven movement with magnetic driving wheel 44;
Driving gear set 52, to be arranged on described main frame 3 and to be connected between described magnetic engaged wheel 51 and described scrambler 53.Encoder interfaces 54, one end connects scrambler, and one end connects detecting instrument (being such as phased array detector), by the signal transmission of scrambler to detecting instrument.Magnetic engaged wheel 51 drives scrambler 53 to rotate by driving gear set 52, realizes the record of probe or voussoir shift position.The concrete structure of above-mentioned drives structure, can be stable provide the continuous, accurate of motivational guarantee and transmission for probe or voussoir move, be convenient to control.
Further, as shown in Figure 1, described curvature regulates the number of turning axle 2 to be two, two described curvature regulate turning axle 2 be arranged in parallel and lay respectively at the top of described main frame, the number of described detecting module 1 is two, and the investigative range of two described detecting modules not exclusively overlaps or to stagger setting along the axis of dividing plate to be detected.Like this, the surface of the dividing plate that covering that can be wider is to be detected, accomplishes that scanning is without dead angle, improves scanning efficiency.Probe 11 is such as strip, the axis of the parallel dividing plate to be detected of length direction, scanning direction is the circumference of dividing plate to be detected, the probe 11 of two detecting modules 1 be arranged in parallel and the probe 11 of two detecting modules 1 in the setting of axially staggering of dividing plate to be detected, the coverage of the probe 11 of two detecting modules 1 includes the lateral surface of the dividing plate of detection.
Further, described dividing plate main weld detection system also comprises: phased array detector (not shown), connects described position recording device and described probe.Phased array detector, for launching electric pulse, acquisition testing data, encoder data, stores data, realizes the multiplanar imaging of testing result, can analyze testing result fast and accurately.Phased array detector can be arranged on outside couplant supply and control module and main frame, mobile with main frame, reduces the burden of main frame movement, increases the dirigibility of main frame movement, increase the stability detecting and analyze.
Further, as shown in Figure 2, described dividing plate main weld detection system also comprises: compress torsion spring 15, be connected between described voussoir and described main frame.Compressing torsion spring 15 is arranged on main frame, when probe detects, compresses torsion spring 15 and provides snap-in force for voussoir and probe, make it be adjacent to examined workpiece.
Further, as shown in Figure 2, described dividing plate main weld detection system also comprises:
Traversing framework 22, connects described curvature and regulates turning axle 2, traversing framework has traversing scale, is convenient to quantitative movable length;
Traversing rack guide rail 21, is arranged on described traversing framework 22, has tooth bar;
Traversing bearing seat 17, to be arranged on described traversing rack guide rail 21 and to connect described voussoir 11;
Traversing knob 16, connects described traversing bearing seat 17, and traversing knob 16 is such as gear or connects gear, and by the turn of described traversing knob 16, described traversing bearing seat 17 is traversing on described traversing rack guide rail 21.
Voussoir is fixed in voussoir gripper frame.Voussoir gripper frame, is arranged on main frame 3, for fixing voussoir and probe, fixes voussoir by each two jackscrews in both sides.Rotate the pinion rotation that traversing knob makes in traversing bearing seat, gear, in traversing rack guide rail generation relative movement, realizes the transverse shifting of probe and self-clamping module.Traversing bearing seat, connecting wedge gripper frame, is placed on traversing guide rail, and when regulating traversing knob, traversing bearing seat produces transverse movement, thus drives the transverse shifting of voussoir and probe.Controlled the lateral attitude of voussoir and probe by adjusting knob, by the scale on traversing framework, accurate adjustment probe detects position.
As shown in Figure 3, main frame 3 comprises: handle and curvature regulate panel 31 and upper cover plate 32.Handle and curvature to regulate on panel 31 hole on the lower to regulate turning axle 2 to be connected with curvature, and top one arranges aperture is connected with curvature pilot plunger 24, is adapted to the detection of the dividing plate of different curvature by the position of curvature pilot plunger 24 in aperture.Upper cover plate 32 protects driving mechanism and the position recording device of main frame inside.
After curvature regulates turning axle to assemble, whole probe and self-clamping module can regulate centered by turning axle by curvature rotates, now corresponding hole in the empty group of the arc on panel 31 can be regulated to match curvature pilot plunger 24 and curvature according to the curvature of workpiece configurations is different, traversing framework 22 is positioned on main frame 3, make curvature regulate turning axle or the detecting module curvature certain with main frame 3 one-tenth, detection is implemented.
The utility model also proposes a kind of dividing plate main weld detection method, and described dividing plate main weld detection method comprises:
Steps A: probe is pushed against on voussoir, drive voussoir automatic moving on dividing plate to be detected to carry out scanning by driving mechanism, described probe is linear array probe, and described voussoir has the curved surface workplace consistent with dividing plate curvature to be detected;
Step B: in the process of voussoir movement, by the position of position recording device record scanning;
Step C: the image obtained according to probe and the position of position recording device record, realizes the record detecting data.
Further, magnetic driving wheel is driven to realize the movement of voussoir on dividing plate to be detected by motor.
Further, phased-array technique is adopted to realize detecting the real time record of data.
Detection method of the present utility model or process are such as follows:
1, regulate active magnetic wheel, driven magnetic wheel axial spacing, ensure that each magnet pulley all can expedite movement at surface of the work.
2, regulate curvature to regulate turning axle, make scanning equipment (detecting module) that the dividing plate curvature detected can be adapted to.
3, probe, voussoir are installed on scanning equipment, are adjusted to correct position.Probe wire is connected with detector;
4, with signal wire, encoder interfaces one end is connected with detector.
5, pump outlet is connected to universal pipe joint 19, and with flexible pipe, hose adapter 13 is connected with water pipe head 18;
6, with wire connecting power interface 45 and out-put supply interface 69, to feeding electric motors.
7, external power source is connected with the power supply connecting box (electrical power source connection part) of casing.
8, flexible pipe is used to be connected with external water source or couplant by water inlet 64.
9, setting and method is detected:
Use linear array probe, 5MHz64 array element linear array probe can be used, adopt the mode of 0 ° or the linear scanning of low-angle, excitation ultrasound ripple.Instrument arranges 4 windows, an A view, B view, a C view, a D view.
10, after being provided with, scanning equipment (detecting module) is adsorbed onto the scanning face of workpiece.
11, open water pump, regulate couplant flow, make couplant at the uniform velocity stable be transported to bottom voussoir;
12, connect motor push button, regulate motor speed, make the movement that scanning equipment energy is stable.
13, scanning equipment is moved to detection reference position, start to detect and data acquisition.
B view can be observed in testing process and identify the defect detecting position in real time fast, by recording detection data, the size of defect on each view can be obtained.
The positional information detected and detection data are preserved by after the collection of phased array detector.
Advantage of the present utility model has:
1) motorized motions scanning equipment (detecting module), improves detection efficiency, realizes the mechanical scanning of testing process, reduces human factor to the impact of testing result.
2) adopt scrambler record probe positions, set up and detect data and the corresponding relation detecting position, and real time record is carried out to detection data.
3) use phased array detection technique, use linear array probe, the sensing range of a scanning is increased, improve detection efficiency, use phase array focusing technology to improve detection sensitivity and signal to noise ratio (S/N ratio) simultaneously.
4) use phased-array technique to realize detecting the multiplanar imaging function of data, make intuitive display result accurate.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.For each ingredient of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (7)
1. a dividing plate main weld detection system, is characterized in that, described dividing plate main weld detection system comprises:
Main frame;
Driving mechanism, is arranged on described main frame and also can drives described main frame automatic moving;
Curvature regulates turning axle, is hinged on described main frame;
Detecting module, is connected to described curvature and regulates on turning axle;
Described detecting module comprises: voussoir and the probe be pushed against on described voussoir, and described probe is linear array probe, and described voussoir has the curved surface workplace consistent with dividing plate curvature to be detected;
Position recording device, is arranged on described driving mechanism.
2. dividing plate main weld detection system as claimed in claim 1, it is characterized in that, described dividing plate main weld detection system also comprises: couplant supply and control module, connect described probe.
3. dividing plate main weld detection system as claimed in claim 1, is characterized in that,
Described position recording device comprises: scrambler;
Described driving mechanism comprises:
Motor, is arranged on described main frame;
Magnetic driving wheel, is arranged on and described main frame is connected with described motor and is positioned at the bottom of described main frame;
Magnetic engaged wheel, is arranged on and described main frame is connected with described magnetic driving wheel and is positioned at the bottom of described main frame;
Driving gear set, to be arranged on described main frame and to be connected between described magnetic engaged wheel and described scrambler.
4. dividing plate main weld detection system as claimed in claim 1, it is characterized in that, described curvature regulates the number of turning axle to be two, two described curvature regulate turning axle be arranged in parallel and lay respectively on described main frame, the number of described detecting module is two, and the investigative range of two described detecting modules not exclusively overlaps.
5. dividing plate main weld detection system as claimed in claim 1, it is characterized in that, described dividing plate main weld detection system also comprises: phased array detector, connects described position recording device and described probe.
6. dividing plate main weld detection system as claimed in claim 1, it is characterized in that, described dividing plate main weld detection system also comprises: compress torsion spring, be connected between described voussoir and described main frame.
7. dividing plate main weld detection system as claimed in claim 1, it is characterized in that, described dividing plate main weld detection system also comprises:
Traversing framework, connects described curvature and regulates turning axle;
Traversing rack guide rail, is arranged on described traversing framework;
Traversing bearing seat, to be arranged on described traversing rack guide rail and to connect described voussoir;
Traversing knob, connects described traversing bearing seat, and by the turn of described traversing knob, described traversing bearing seat is traversing on described traversing rack guide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420749957.1U CN204203170U (en) | 2014-12-03 | 2014-12-03 | Dividing plate main weld detection system |
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| CN201420749957.1U CN204203170U (en) | 2014-12-03 | 2014-12-03 | Dividing plate main weld detection system |
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| CN204203170U true CN204203170U (en) | 2015-03-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319276A (en) * | 2015-09-29 | 2016-02-10 | 国家电网公司 | Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array |
| CN105334263A (en) * | 2015-09-29 | 2016-02-17 | 国家电网公司 | GIS lead-in and lead-out bushing plug welding line ultrasound phased array detection probe and scanning apparatus |
| CN105717195A (en) * | 2014-12-03 | 2016-06-29 | 国家电网公司 | Separator plate main welding line detection system and method |
| CN108333307A (en) * | 2018-02-07 | 2018-07-27 | 苏州热工研究院有限公司 | A kind of turbine rotor welding point detecting system |
-
2014
- 2014-12-03 CN CN201420749957.1U patent/CN204203170U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717195A (en) * | 2014-12-03 | 2016-06-29 | 国家电网公司 | Separator plate main welding line detection system and method |
| CN105717195B (en) * | 2014-12-03 | 2018-09-07 | 国家电网公司 | Partition board main weld detecting system and detection method |
| CN105319276A (en) * | 2015-09-29 | 2016-02-10 | 国家电网公司 | Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array |
| CN105334263A (en) * | 2015-09-29 | 2016-02-17 | 国家电网公司 | GIS lead-in and lead-out bushing plug welding line ultrasound phased array detection probe and scanning apparatus |
| CN108333307A (en) * | 2018-02-07 | 2018-07-27 | 苏州热工研究院有限公司 | A kind of turbine rotor welding point detecting system |
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