CN100424507C - Large-bore pipe ring welded seam phased-array ultrasonic automatic detection system - Google Patents
Large-bore pipe ring welded seam phased-array ultrasonic automatic detection system Download PDFInfo
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Abstract
The present invention discloses a phased array ultrasonic automatic detection system for detecting circumferential welding seams of large-diameter pipelines. The detection system comprises a main control part, a special pipeline crawling device part, an ultrasonic wafer array probe part, a superior machine intelligent graphic processing part, a cable part and a special equipment vehicle, wherein the ultrasonic wafer array probe part is installed on the special pipeline crawling device part, the main control part and the superior machine intelligent graphic processing part are arranged in the special equipment vehicle, and the main control part and the superior machine intelligent graphic processing part in the equipment vehicle are connected with the special pipeline crawling device part through the cable part. The detection system is provided with the phased array probe in small size and light weight, and has the advantages of flexible parametric variation, large detectable range of pipeline diameter, fewer necessity probes for full-thickness/diameter detection, low operating cost, etc.; the pipeline diameter range is from 4 inchs to 56 inches.
Description
Background technology
In the detection of pipeline welding quality, traditional detection mainly adopts visual detection, ray detection, manual ultrasonic detection etc., and wherein, visual detection is the method for using the earliest, generally also is used for the weldquality of small-bore pipeline.For the annular butt-weld of large diameter pipeline (referring generally to caliber more than 1 meter), if it will be very difficult adopting ray detection, at first on the girth joint of pipe, stick the sensitizing film of an astragal magazine, flaw detection personnel operation ray inspection machine emission x ray, the weldquality situation is filmed, obtain the weld seam photo at scotography, photographic fixing, flushing, airing then, pass judgment on weldquality by appointees again.This method has under the situation of plumbous room protection in testing laboratory; staff's healthy and safe also the needs keeps a close eye on; yet under the situation of pipeline field construction; there is not good safeguard measure; can constitute a threat to the workmen, operating personnel more be should be noted that the harm that prevents that ray from causing human body.In addition, each road mouth of pipe of large diameter pipeline all needs a lot of sensitizing films, and fund expends huge, also needs a large amount of time paster, shooting, development, photographic fixing, flushing, airing, judge.Can not participate in the line production of engineering construction, have a strong impact on project progress.
Along with the raising of the automaticity of the development of China's pipe-line construction and preparation of construction, the application of automatically welding equipment becomes a kind of trend.The quality testing of the weld seam of finishing for full-automatic welding equipment, traditional detection technique be the needs of incompatible development already.
Recently, the automatic ultrasonic detection technique is applied to the detection of petroleum gas long-distance transport pipes butt-weld quality again, automatic ultrasonic detection technique growth momentum is powerful, early stage fully-automatic ultrasonic detection system is a plurality of probes to be combined form the probe dish, each probe has fixing the acoustic beam transmit direction and the depth of focus, cover the whole welding line subregion thereby reach,, finish weld seam detection by mechanical automatic scanning.But conventional many probe automatic ultrasonic detection systems exist system and adjust the big and probe shortcoming that accommodation is narrow and equipment is heavy of difficulty in the detection to different wall, different tube diameters, unlike material pipe welding seam quality.
Integrate, though radiography detection and ultrasonic detection technology have been brought into play very big effect for the testing of petroleum gas long distance pipeline butt-weld quality.But traditional line photograph detects and ultrasound examination exists many shortcomings:
1, detection speed is slow, particularly pipeline girth weld is detected, and its detection speed is more slow, has a strong impact on related project progress.
2, testing result has subjective factor, and relevant with operating personnel's level and accountability.
3, the measurement difficulty of the oneself height of depth of defect direction or defective is very big, so the engineering threshold analysis adopts ECA to be difficult to realize.
4, radiographic inspection has serious injury to health, and workload exceeds standard and can cause human leukocytes decline even cause leukaemia.
5, existing system in the detection to different wall, different tube diameters, unlike material pipe welding seam quality, to adjust difficulty big and probe accommodation is narrow and equipment is heavy.
Summary of the invention
Detect the problem that exists at above-mentioned conventional ultrasound, the invention provides a kind of large-bore pipe ring welded seam phased-array ultrasonic automatic detection system.
In order to address the above problem, the present invention adopts following technical scheme: this phased-array ultrasonic automatic detection system comprises main control part, pipe special crawl device part, ultrasound wave wafer array probe part, host computer intelligent graphic processing section, cable section, equipment special car, wherein
Ultrasound wave wafer array probe partly is installed on the pipe special crawl device part,
Main control part, host computer intelligent graphic processing section are placed in the equipment special car,
Main control part, host computer intelligent graphic processing section in the equipment special car partly are connected with the pipe special crawl device by cable section.
Described main control part comprises industrial control computer, radiating portion, receiving unit and the Control Software that is stored in industrial control computer;
Described pipe special crawl device partly comprises walking guide rail, crystal and contract block assembly, gear train, coupling liquid output unit.
Described ultrasound wave wafer array probe partly comprises left and right sides crystal array;
Described host computer intelligent graphic processing section comprises a host computer, man-machine interface, display;
Described cable section comprises three branch cables and 128 ultrasonic lines, and wherein, a branch cable is the motor-driven cable, and a branch cable is the scrambler cable, and a branch cable is a umbilical cable.
A data model is arranged in the Control Software of described industrial control computer, the data that host computer can be descended are through calculating and handle control data and the program that has formed this weld seam detection, and control data comprises that focal position, refraction point position, each acoustic beam participate in the crystal numbering that transmits and receives, the delay time that each crystal transmits and receives.
Described industrial control computer has been selected 14 slots of standard for use, comprises 4 PCI notches and 10 ISA notches, and cpu motherboard wherein, network interface card are inserted on the PCI notch, and two expelling plates and four dash receivers are inserted on the ISA notch.
Described walking guide rail is clamping and dismantling on tested pipeline easily, and the walking guide rail has tooth bar, and the pipe special crawl device is accurately walked;
Described crystal and contract block assembly are that the organic material before crystal and the crystal is formed the wedge assembly, spacing between the contract piece and lateral attitude can be regulated by accurate screw mandrel, the effect of being stressed of contract block assembly is pressed on the surface of contact of pipeline by roller, and maintenance certain clearance, when surface of contact is subjected to big resistance, automatically lifting mechanism can make the contract piece lift, and prevents damaged in collision contract piece;
Described gear train comprises servomotor, optical disc encoding device, motor-driven control and address code processor;
Described coupling liquid output unit is the support that has the output aperture of a plurality of coupling liquid and the contract piece is installed, and when coupling liquid is subjected to the pressure of pump, coupling liquid is evenly sprayed, and forms the good coupling between contract piece and the surface of contact.
Described left and right sides crystal array is the linear wafer array, and each array has 64 wafers, and each wafer all directly is connected to a radiating circuit, and each wafer requires the emission ultrasound wave according to control, and the direction of ultrasonic emitting, intensity and time delay can change.
Described man-machine interface comprises modules such as login password, basic parameter setting, operational factor setting and calculating, characterization processes are selected, test figure record, detection data storage, system help;
Because the present invention has adopted above-mentioned large-bore pipe ring welded seam phased-array ultrasonic automatic detection system, compares with the fully-automatic ultrasonic checkout equipment of routine, mainly has the following advantages:
1, the little and lightweight phased array probe of volume.
2, because use the electronic parameter setting, the parameter variation of whole detection system has greater flexibility.
3, the phased array probe system is made up of functional module.
4, by calling file is set, changes system settings fast, adapt to different operating modes.
5, increase number of partitions, improve the resolution of defective quantitative accuracy and imaging.
6, adopt phase array focusing, improve the defective lateral resolution.
7, can to detect the pipeline diameter range big in system, can be from 4 (101mm) inch to 56 (1420mm) inch.
8, the probe quantity that through thickness/diameter detection is necessary is few, and the cost of operation reduces.
9, reduction of system's adjustment difficulty and probe accommodation are wide, use flexibly.
Institute the pipeline girth weld flaw detection has obvious advantage from above-mentioned phased-array ultrasonic automatic detection system, should detect the developing direction of representing world's inspection technique automatically by phased-array ultrasonic.
Description of drawings
Fig. 1 is a phased-array ultrasonic automatic detection system theory diagram of the present invention.
Fig. 2 is a phased-array ultrasonic automatic detection system Application Example synoptic diagram of the present invention.
Embodiment
See also Fig. 1 and in conjunction with shown in Figure 2, large-bore pipe ring welded seam phased-array ultrasonic automatic detection system of the present invention comprises main control part 1, pipe special crawl device part 2, ultrasound wave wafer array probe part 3, host computer intelligent graphic processing section 4, cable section 5, equipment special car 6, wherein
Ultrasound wave wafer array probe part 3 is installed on the pipe special crawl device part 2,
Main control part 1, host computer intelligent graphic processing section 4 are placed in the equipment special car 6,
Main control part 1 in the equipment special car 6, host computer intelligent graphic processing section 4 are connected with pipe special crawl device part 2 by cable section 5.
Described main control part 1 is actually a phased array detector (concrete structure and principle about this detector are open in the patent that another piece applied for simultaneously), and main control part comprises industrial control computer, radiating portion, receiving unit and the Control Software that is stored in industrial control computer.
Main control part 1 is composed of a personal-machine interface at host computer, can import before each test: data such as the speed of sound transmission, temperature in caliber, thickness of pipe, pipe numbering, date, the material.By with the control computer that these signals is sent to main control part that communicates to connect of main control part network interface card, the reference data when forming simultaneously that file is made various figures as host computer and preserving file as data.
The main control computer of main control part 1 (slave computer) has a data model, control data and trace routine that data various calculating of process that host computer can be descended and processing have formed this weld seam detection, control data comprise that focal position, refraction point position, each acoustic beam participate in the crystal numbering that transmits and receives, the delay time that each crystal transmits and receives etc.So, the restriction of uncontrolled scheme quantity, by the multidimensional variable that man-machine interface obtains, by the control method that mathematical model generates, controlling schemes is more, more flexible, more accurate.
Before detecting beginning, the slave computer of main control part 1 forms the control data array with above-mentioned control data, and direct data bus by system writes launches the CPLD at different levels that receive on the hardware integrated circuit board.
CPLD at different levels are after receiving frame-synchronizing impulse, by the sequential of having set, send the various gating pulse in this frame cross section, to control the gating in each loop, the selection of the logical mode of each emission, reception, time-delay, A/D, D/A change-over circuit, signal amplification quantity and signal band, the data-switching time of A/D transition card etc.
In this frame, wait CPLD work to finish after, slave computer reads whole test datas on the A/D transition card by data bus, and these data are written as file, is sent to host computer by network interface card.
The slave computer data transfer rate of main control part 1 is fast, the standardization level height of device software, hardware, functional reliability height.Selected for use PCI and ISA to mix the standard bus.Wherein have cpu motherboard, network interface card to be inserted on the PCI notch, two expelling plates and four dash receivers are inserted on the ISA notch.Select 14 slots of standard for use, comprised 4 PCI notches and 10 ISA notches.The data reading speed of ISA notch can meet the reading speed requirement greater than 8Mbit/S
Because computing machine and whole electronic hardware are mounted in operation in the equipment cart 6, can be through the jolting of the road surface of the non-constant of condition, so equipment has the highly reliable stability on very strong shock resistance and the physical construction; Simultaneously, the antidusting ability of height and the electric cabinet that good anti-power supply disturbs are arranged.
Two of expelling plates, every 64 road transmitter unit, every expelling plate excites corresponding launching circuit by the pulse that the CPLD on this expelling plate sends 16 tunnel different delayed time chronologically.
Four of dash receivers, every correspondence 32 road crystal.After signal enters each receiving element, at first pass through the low noise amplifier of controllable gain, remake the A/D conversion then, because the initial pulse asynchronism(-nization) (CPLD by each road sends) of A/D conversion has correspondingly promptly done to receive time-delay, its amount of delay, has been given CPLD at different levels by bus and has been provided with before test by main control computer.After the A/D translation data reaches the required byte of test, under the unified clock of CPLD at different levels, simultaneously the data that receive are carried out the D/A conversion, and simulating signal is sent plate simulate outward and add.
One of comprehensive plate does that total simulation of 32 tunnel adds, excitation power supply voltage control signal generator, motor walk line control circuit, hydraulic pump control etc.
One of total A/D conversion integrated circuit board is bought finished product, and its requirement is:
100MHz, 8 bit data precision can be by outer synchronizing pulse triggering synchronous.
Can control A/D conversion by control end, and toward RAM in, write data in order, as not have this signal and then stop to read and write.
Can be by the pulse of zero clearing control end input 2-10 microsecond, after the pulse, the pointer that writes data returns zero-address to begin to write.
And require to have the sense data subroutine, can read into certain data volume from input data first address and end.
The data bus of expelling plate and dash receiver and address bus meet industrial computer isa bus standard
Transmitting and receiving the adjustable delay precision is 2ns, transmit and receive whole employing digital delaying circuits, digital delaying circuit is to be controlled by software program more than the 10ns, and 2ns-10ns is by digital delaying circuit control (by gating control), and time control length is 25000ns.
Signal amplifies bandwidth 1-6MHz, 2-12MHz, but 5-20MHz and straight-throughly be with four kinds of program settings.
Pulse output: 50V-200V; Pulse width: 20ns-500ns
Amplifier dynamic range: 56Db/ passage.
Described pipe special crawl device partly comprises walking guide rail, crystal and contract block assembly, gear train, coupling liquid output unit.
Described walking guide rail is clamping and dismantling on tested pipeline 7 easily, and guide rail has tooth bar, and crawl device is accurately walked.
Described crystal and contract block assembly are that the organic material before crystal and the crystal is formed the wedge assembly, spacing between the contract piece and lateral attitude can be regulated by accurate screw mandrel, the effect of being stressed of contract block assembly is pressed on the surface of contact of pipeline by roller, and maintenance certain clearance, when surface of contact is subjected to big resistance, automatically lifting mechanism can make the contract piece lift, and prevents damaged in collision contract piece;
Described gear train comprises servomotor, optical disc encoding device, motor-driven control and address code processor;
Described coupling liquid output unit is to be arranged on the output aperture that contract piece in the contract block assembly has a plurality of coupling liquid, when coupling liquid is subjected to the pressure of pump, coupling liquid is evenly sprayed, and forms the good coupling between contract piece and the surface of contact.
Whole crawl device mainly adopts almag to make, and weight＞20Kg is convenient to dismounting and is moved.
Described ultrasound wave wafer array probe partly comprises left and right sides crystal array.
Described left and right sides crystal array is the linear wafer array, and each array has 64 wafers, and each wafer all directly is connected to a radiating circuit, and each wafer requires the emission ultrasound wave according to control, and the direction of ultrasonic emitting, intensity and time delay can change.
Each wafer emission size 1 * 10mm, frequency of operation is 5MHz, long 30 meters of cable tail.
Described host computer intelligent graphic processing section comprises a host computer, man-machine interface, display.
Described man-machine interface comprises modules such as login password, basic parameter setting, operational factor setting and calculating, characterization processes are selected, test figure record, detection data storage, system help.
In host computer, be solidified with the Flaw Image software for display, this software is the information processing and the image software for display of a special use, can distribute the data high-speed Large Volume Data (each weld seam scanning maximum data capacity 20M) that slave computer is sent up according to passage to be presented on the screen in real time.Accomplish accurately, at a high speed, do not have to omit.This software is shape, position and the size of visual defects and weld seam intuitively, and can show with the three-dimensional picture mode.
Described cable section comprises three branch cables and 128 ultrasonic lines, and wherein, a branch cable is the motor-driven cable, and a branch cable is the scrambler cable, and a branch cable is a umbilical cable.
Also have a coupling water supply line, a reinforcing wirerope and outer protective jacket to be connected to equipment cart in addition.
In an embodiment of the present invention, equipment special car 6 is to be formed by 17 IVECO vehicles transformations of the way, and this car is used for along pipeline construction direction fast detecting welding quality.After the pipeline welding, tube-cooled is when being enough to contact, and this detection system just can be started working, because after welding a period of time, some deviations can appear in automatic welding device, and detection system can detect early stage slip and can in time offer counsel, thereby reduces the number of rejects and seconds rate.This system can the participation process control and management, improves construction quality, the quickening progress.
When pipeline 7 being detected with detection of the present invention system, the weld seam of whole pipe is divided into many little zones, each regional degree of depth is 2 millimeter, covers the root of weld, hot weld district, fill area and lid respectively and emits the district.Can cover the zone of all detections when making ultrasonic scanning.Ultrasound wave sends from phased array probe, the wafer of each array of phased array probe can both require the emission ultrasound wave according to control, and can change direction, intensity and the time delay of emission, wafer is installed on the pipe crawling device, feasible probe just in time places the weld seam both sides respectively, crawl device can be along one week of pipeline circumferential movement by telepilot control, and one week of operation only needs about 1 minute.Host computer is mainly used in user's operation, can import basic pipe parameter and controlled variable, the operation interface input ultrasonic waves transmitted bundle parameter in host computer.Detect preceding according to institute's accepted standard, after defective in the calibration reflector simulation workpiece is finished, data are sent to the next industrial control computer by network connectivity, industrial control computer is also controlled the wafer that transmits and receives, angle, focal length and the focal spot size of emission acoustic beam according to calculated with mathematical model, control emission wafer sends the ultrasound wave of different angles scope, receives the echo that wafer receives reflection.Emission is to be excited at interval at short notice according to a plurality of probe wafers, and the accurate control by to time-delay can produce different angles, different focal and not confocal acoustic beam in pipe welding seam.The echo of required focus forms A, B scanning all by time interval displacement, and TOFD (pulse echo and time difference diffraction) scanning and transversal scanning ripple.These echoes are collected, convert the host computer that is sent to host computer intelligent graphic processing section after the numeral through the high speed transfer card to through the A/D card, the image processing software of host computer becomes bidimensional or three-dimensional image to be presented on the screen reduction of data, the welding image of ultrasonic scanning just has been presented on the screen in real time like this, the user can observe the welding quality of weld seam, searches weld defects.Data can also be kept in the CD, and the data of each road weld seam of reservation can be in order to analyzing verification.This preserving type is also preserved good many of film than radiographic inspection.
The network interface card of main control part 1 by industrial control computer and the network interface card of host computer carry out and the communicating by letter of host computer, and communication protocol is TCP/IP, and it is optional that traffic rate is designed to 10M/100M.
Before test beginning, be installed in the man-machine interface on the host computer, parameters such as the caliber of existing input, thickness of pipe are passed to main control part with document form, in order to change controlled variable.
Main control part 1 computing machine calculates these data of importing on the host computer man-machine interface through Analysis of Mathematical, other produces one and transmits data format file, before detecting startup, is sent to by network interface card in the file of host computer.
In addition, the host computer PaintShop can call required relevant data, as the useful data of making figure in the database of the man-machine interface of host computer.
Main control part 1 becomes file and file with the detected data organization of each frame after beginning detection, be sent to the data storage area (hard disk) of host computer.
Crawl device is connected to the I/O mouth with the signal of main control part and is connected.
Can be started detection system by the operator on crawl device, after the start-up operation signal reaches main control part, after confirming to allow with various chain signals, send the motor rotational pulse by the main control part main control computer, start-up system begins test simultaneously.Simultaneously, crawl device is sent to main control part with warning message, for the main control part judgment processing.
More than control is all undertaken by the cable between test site and the equipment special car.
Be that private cable by 128 lines in the leader cable carries out being connected in main control part 1 and the ultrasound wave wafer array between 128 wafers.Each wafer is connected to directly all that riches all the way radio road.
The accurate control of utilization computing machine in system of the present invention can make delay time according to certain rules emission and the time-delay of the wafer of crystal battle array receive, to form hyperacoustic paraboloidal emission front and to receive front.Make the ultrasonic acoustic beam of multi beam can focus on tested face of weld, and the angle of the position of removable focus and deflection focus, the fine degree and the order of accuarcy (millimeter level) of flaw detection improved widely.Simultaneously can be only with one group of biserial crystal probe, reach the scanning, the scanning of TOFD rule, coupling state scanning of many acoustic beams multi-angle by different level etc., dwindle and simplified the volume and the kind of probe, simultaneously, also when increasing other scan modes from now on, only need change software and need not change hardware, make system have very big dirigibility.The data storage file that the test back produces can be delivered to host computer by disc transmission or communication and carry out data processing, and can demonstrate and print the wave file of pulse by software, in addition, handle (by corresponding software processes) through fuzzy diagnosis to this figure, can identify the size and the accurate position of fault in material, by printing and screen display.Simultaneously, according to the regulation of standard, requirement can judge this, determines whether and must reprocess this weld seam.
The leading indicator that detection system of the present invention reaches:
Use CPLD and electronic method to realize the time-delay of ultrasonic beam, displacement, dynamically deflection and focusing, reached delay precision and reference time delay that the traditional analog method can't realize, delay precision reached for 2 nanoseconds, and reference time delay has reached 25 microseconds.
Making bore can all test at clock more than 1 minute in the flaw detection of the pipeline girth weld of 6-50 millimeter at 426-1420 millimeter, thickness finishes.
Carrying out image by computing machine shows comprising two peacekeeping 3-D views.Preserve all flaw detection data.Having accurately, the waveform of the amplitude integration of each acoustic beam reflection wave shows and graphic printing.
Have defective position and recognition function big or small, shape accurately, and can have three-dimensional defective patterns to show, and can be with graphic printing.
Whether to defective need the arbitration functions of immediately doing over again or scrapping, and can show and print if having.
Probe is that 64 crystal of two in-line arrangement constitute, and the concussion frequency is the 5M hertz.
System control method comprises the flaw detection of conventional criteria method, transversal crack flaw detection, the flaw detection of TOFD diffracted wave time difference method.
The display packing of system has that conventional two-door lines demonstrations, hyperchannel A sweep demonstration, hyperchannel B scanning show, diffracted wave time difference method (TOFD) demonstration,
Satisfy the code requirement of international flaw detection ASTME-1961-98 and API1104-99.
Meet transfering natural gas from the west to the east project manager portion of CNPC company standard---the clause requirement of the standard of " detection of West-East National Gas Transmission Project pipeline girth weld fully-automatic supersonic ".
Be suitable for caliber:＞32 inches (812.8mm) (only needing to change file is set)
Can survey pipeline wall thickness: 12mm-26mm (only needing to change file and contract piece are set)
Emission: 16/32,128 passage
Receive: 16/32,128 passage
Phased array probe: 5MHz (containing TOFD)
Array element: 64*2 array element
Adjustable excitation pulse time-delay: 0-25 microsecond, 2ns/ step
Receiver time-delay: 0-25 microsecond, 2ns/ step
Adjustable emission voltage: 50-200V
Maximum repetition rate: 10-20KHz display mode: A, B and TOFD
Pipeline scanning and report time:＜10 minutes
Phased array probe dish weight:＜20KG
Machinery scanner: have manually with automatic; Scanning speed: 100mm/s (adjustable);
Position resolution 0.5mm; Bearing accuracy 0.5mm
Operating ambient temperature :-20 ℃---+50 ℃
Power supply: DC24V/AC220V 50Hz
System design oriented manipulation user of service's easy usability
This detection system operating personnel that detect a flaw towards the field, there is good man computer interface in system, is convenient to import data, and operating personnel only need have preliminary computer literacy can operate the input data and carry out the situation analysis of result of detection.
Claims (7)
1. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system is characterized in that:
This phased-array ultrasonic automatic detection system comprises main control part, pipe special crawl device part, ultrasound wave wafer array probe part, host computer intelligent graphic processing section, cable section, equipment special car, and ultrasound wave wafer array probe partly is installed on the pipe special crawl device part; Main control part, host computer intelligent graphic processing section are placed in the equipment special car; Main control part, host computer intelligent graphic processing section in the equipment special car partly are connected with the pipe special crawl device by cable section.
2. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system as claimed in claim 1 is characterized in that:
Described main control part comprises industrial control computer, radiating portion, receiving unit and the Control Software that is stored in industrial control computer;
Described pipe special crawl device partly comprises walking guide rail, crystal and contract block assembly, gear train, coupling liquid output unit;
Described ultrasound wave wafer array probe partly comprises left and right sides crystal array;
Described host computer intelligent graphic processing section comprises a host computer, man-machine interface, display;
Described cable section comprises three branch cables and 128 ultrasonic lines, and wherein, a branch cable is the motor-driven cable, and a branch cable is the scrambler cable, and a branch cable is a umbilical cable.
3. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system as claimed in claim 2, it is characterized in that: a data model is arranged in the Control Software of described industrial control computer, the data that host computer can be descended are through calculating and handle control data and the program that has formed this weld seam detection, and control data comprises that focal position, refraction point position, each acoustic beam participate in the crystal numbering that transmits and receives, the delay time that each crystal transmits and receives.
4. as claim 2 or 3 described large-bore pipe ring welded seam phased-array ultrasonic automatic detection systems, it is characterized in that: described industrial control computer has been selected 14 slots of standard for use, comprise 4 PCI notches and 10 ISA notches, cpu motherboard wherein, network interface card are inserted on the PCI notch, and two expelling plates and four dash receivers are inserted on the ISA notch.
5. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system as claimed in claim 2 is characterized in that:
Described walking guide rail is clamping and dismantling on tested pipeline easily, and the walking guide rail has tooth bar, and the pipe special crawl device is accurately walked;
Described crystal and contract block assembly are that the organic material before crystal and the crystal is formed the wedge assembly, spacing between the contract piece and lateral attitude can be regulated by accurate screw mandrel, the effect of being stressed of contract block assembly is pressed on the surface of contact of pipeline by roller, and maintenance certain clearance, when surface of contact is subjected to big resistance, automatically lifting mechanism can make the contract piece lift, and prevents damaged in collision contract piece;
Described gear train comprises servomotor, optical disc encoding device, motor-driven control and address code processor;
Described coupling liquid output unit is the support that has the output aperture of a plurality of coupling liquid and the contract piece is installed, and when coupling liquid is subjected to the pressure of pump, coupling liquid is evenly sprayed, and forms the good coupling between contract piece and the surface of contact.
6. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system as claimed in claim 2 is characterized in that:
Described left and right sides crystal array is the linear wafer array, and each array has 64 wafers, and each wafer all directly is connected to a radiating circuit, and each wafer requires the emission ultrasound wave according to control, and the direction of ultrasonic emitting, intensity and time delay can change.
7. large-bore pipe ring welded seam phased-array ultrasonic automatic detection system as claimed in claim 2 is characterized in that:
Described man-machine interface comprises that login password, basic parameter setting, operational factor setting and calculating, characterization processes are selected, test figure writes down, detects data storage, system help module.
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| JP5279090B2 (en) * | 2007-09-28 | 2013-09-04 | 株式会社Ｋｊｔｄ | Ultrasonic flaw detection method and apparatus |
| CN101614705B (en) * | 2009-07-29 | 2011-04-06 | 国核电站运行服务技术有限公司 | Overlaying layer stripping ultrasound detection imaging system of major-diameter thick-wall pressure vessel |
| CN101782552B (en) * | 2010-02-05 | 2013-01-16 | 航天科工哈尔滨风华有限公司 | Automatic on-line detecting device for welding lines of mast of wind driven generator |
| CN102608209B (en) * | 2012-02-28 | 2014-08-20 | 上海斌瑞检测技术服务有限公司 | Ultrasonic detecting device and detecting method for interface corrugation of explosive welding composite material |
| CN104897447A (en) * | 2015-06-01 | 2015-09-09 | 广东省特种设备检测研究院 | Sample pipe for verifying testing capability of testing equipment for long-distance buried pipeline |
| CN105352684A (en) * | 2015-09-20 | 2016-02-24 | 辽宁石油化工大学 | Novel portable oil tank detection device capable of remote control |
| CN107367463A (en) * | 2017-07-04 | 2017-11-21 | 九江学院 | A kind of laser ultrasonic detection system and its method based on climbing robot |
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| CN1412552A (en) | 2003-04-23 |
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