CN104155366A - Ultrasonic non-destructive pipeline detection device - Google Patents
Ultrasonic non-destructive pipeline detection device Download PDFInfo
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- CN104155366A CN104155366A CN201410384354.0A CN201410384354A CN104155366A CN 104155366 A CN104155366 A CN 104155366A CN 201410384354 A CN201410384354 A CN 201410384354A CN 104155366 A CN104155366 A CN 104155366A
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Abstract
The invention relates to an ultrasonic non-destructive pipeline detection device, which is composed of a control center, a mobile detection device, a mechanical motion unit and a combined EMAT sensor; through the mobile detection device, the ultrasonic non-destructive pipeline detection device is adhered to the outer wall of a pipeline and moves in the axial direction; according to the change of ultrasonic energy and propagation time, the corrosion to the inner wall of the pipeline is positioned in the axial direction of the pipeline; after the axial position, where corrosion exists, is determined, EMAT probes surround the pipeline for a circle in the position, where corrosion exists, for detecting the thickness of the pipeline, so that the positioning and shaping of the corrosive position can be realized. According to the ultrasonic non-destructive pipeline detection device provided by the invention, for various defects of the interiors and the surfaces of workpieces, the advanced EMAT technology and a related signal processing technology are adopted, and relative to magnetic flux leakage method intelligent pipeline inspection, the pipeline under high temperature, high pressure and big environmental noise is detected on a site in the running state, so that the manufacturing and running costs are low, the structure is simple, and the operation is simple and convenient.
Description
Technical field
The invention belongs to pipe detection technical field, relate in particular to a kind of Ultrasonic Nondestructive plumbing installation.
Background technology
At present, the impact of the relatively low EMAT of transducing rate and inevitably environment temperature and on-site noise causes the ultrasonic signal signal to noise ratio (S/N ratio) that receives low, and actual waveform and theoretical waveform error are large, need to obtain correct ultrasound wave feedback energy and travel-time.
EAMT pipe detection system needs professional and technical personnel's compounding practice personnel to work at the scene at present.Technician chooses suitable probe definite ultrasound mode according to pipe detection actual conditions.In axial location, system only shows that the ultrasonic energy detecting is decayed and the variation of velocity of propagation.
Therefore need technician to observe testing result in control center, to providing information the other operating personnel of motion detection device, make marks at the axial location of finding corrosion.
Summary of the invention
The present invention solves the technician that needs who exists in pipe detection technology to observe testing result in control center, to providing information the other operating personnel of motion detection device, make marks at the axial location of finding corrosion, the inefficiency bringing, the technical matters of complex operation and a kind of simple in structure, easy to install, Ultrasonic Nondestructive plumbing installation of increasing work efficiency is provided.
The technical scheme that the present invention takes for the technical matters existing in solution pipe detection technology is:
The Ultrasonic Nondestructive plumbing installation of the embodiment of the present invention, this Ultrasonic Nondestructive plumbing installation comprises: control center, motion detection device, mechanical motion unit, combined type EMAT sensor composition;
For transmitting and receiving the motion detection device of ultrasonic signal;
Be connected by feed cable and signal cable with motion detection device, move for controlling motion detection device, the sending and receiving of ultrasonic signal, and receive the real-time processing of signal and the control center that testing result shows;
Be connected with motion detection device, for realizing the mechanical motion unit of axially-movable and circumferential motion;
Be connected with motion detection device, produce guided wave and two kinds of function combination type EMAT sensors of bulk wave for realizing probe.
The present invention can also adopt following technical measures:
In the present embodiment, motion detection device is made up of a pair of EMAT probe, and each EMAT probe transmits and receives ultrasonic signal separately.
Further, EMAT probe is used in combination, by an EMAT probe transmitting ultrasonic signal, another EMAT probe received ultrasonic signal.
Advantage and good effect that the present invention has are: Ultrasonic Nondestructive plumbing installation provided by the invention is to inside workpiece and surperficial number of drawbacks, as: weld metal crack, be mingled with pore etc. and detect, locate, assess and diagnose.Be mainly used in each fields such as national economy such as oil, chemical industry and aviation.The present invention has adopted advanced EMAT technology and relevant signal processing technology, detect with respect to leakage method intelligent pipeline, carry out Site Detection for High Temperature High Pressure in running status and the large pipeline of environmental noise, manufacture and operating cost are low, device structure is simple, easy and simple to handle.
Brief description of the drawings
Fig. 1 is the Ultrasonic Nondestructive plumbing installation structural representation that the embodiment of the present invention provides.
In figure: 1, control center; 2, motion detection device.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1:
Fig. 1 is the structural representation of a kind of Ultrasonic Nondestructive plumbing installation provided by the invention, and this Ultrasonic Nondestructive plumbing installation comprises: control center 1 and motion detection device 2;
2 of motion detection devices are made up of a pair of EMAT probe, and each EMAT probe can transmit and receive ultrasonic signal separately; Also can be used in combination, by an EMAT probe transmitting ultrasonic signal, another EMAT probe received ultrasonic signal;
EMAT probe can be realized the function of dry detection, high temperature detection, ultrasound mode detection: the sending and receiving of non-contact type ultrasonic; without use couplant between probe and pipeline; therefore be applicable to coarse pipe surface; can there is the pipe detection of protecting paint by effects on surface; and be not subject to surface blot; oxidation, and irregular impact.EMAT probe can move continuously and without cooling device under 450 DEG C of high temperature.EMAT probe vertical pipe surface, control simply, do not need the angle converter in conventional ultrasound wave method, produce different waveforms in order to change ultrasound wave incident angle, bulk wave and various guided wave can be produced, the cross-polarized shear wave that piezo-electric acoustical sensor can not produce can be produced especially.
Be connected by feed cable and signal cable with motion detection device 2, control the movement of motion detection device 2, the sending and receiving of ultrasonic signal, and receive the real-time processing of signal and the control center 1 that testing result shows;
Realize the location of corrosion on pipeline axial and circumference, motion detection device 2 need to can move at axial and circumference both direction.Motion is vertically unique scan mode of existing Ultrasonic Nondestructive pipe electromagnetic acoustic sensor metallic conduit detection system.On motion detection device 2, add the mechanical motion unit same EMAT sensor ultrasonic flaw detection along circular motion; Can be together with the mechanical hook-up axially scanning with circumferencial direction, realize the bidimensional setting to corrosion.
The implementation method of this Ultrasonic Nondestructive plumbing installation is:
Motion detection device 2 adheres at pipeline outer wall, vertically operation.
According to the variation in ultrasonic energy and travel-time, first the corrosion of inner-walls of duct is located on pipeline axial.
Motion detection device 2 gait of march at least can reach 4m/min.According to the difference of testing requirement, within 1 hour, approximately can detect pipeline 200m left and right.Motion detection device 2 positioning precisioies at least 5～6mm axial length, registration.The expert system of motion detection device 2 based on man-machine interface and in real time demonstration, provide various ultrasound wave dispersion curves.And according to the application of different pipe detection, provide choosing and the suggestion of ultrasound mode of probe, by two-dimensional figure, show in real time the geometric configuration of corrosion.
After defining the axial location of corrosion, EMAT probe, detects duct thickness, thereby realizes location and setting to corrosion position around duct wall one week at this position ring.
The filtering method based on MatchingPursuit principle that adopts exploitation is a kind of time-frequency domain method.This algorithm is according to the frequency of the guided wave signals of transmitting, and on time domain and frequency domain, the variation from trace signals frequency and waveform simultaneously, can, in the case of very low signal to noise ratio (S/N ratio), filter out useful signal.This filtering method is the advanced algorithm of signal process field, and first Application is in EMAT pipe detection.
Adopt temperature compensation algorithm in the situation that of serviceability temperature instrument not, automatically to carry out temperature compensation to ultrasonic signal.Be applicable to hot environment, the variation of temperature also directly affects the variation of ultrasonic propagation.By the energy attenuation of guided wave and the variation of velocity of propagation, the axial location of instruction damage fast, after axial location is determined, uses bulk wave measuring tube wall thickness, realize the location of corrosion in pipe circumference, final location and the setting of determining the bidimensional of corrosion on duct wall.As shown in Figure 1, control center 1 of the present invention also comprises: control computing machine, ultrasonic exciting signal transmitter unit, ultrasonic signal receiving element, motion detection device motion control unit and power delivery unit; Motion detection device 2 also comprises: motor driving and positioning unit, mechanical motion unit and combined type EMAT probe.
Location and the setting of bidimensional of corrosion position: first at the current axial location of motion detection device 2, that pops one's head in by EMAT is used in combination (transmitting, another receives), along the circumferential direction produces guided wave in duct wall.Determine on the circumference of this axial location, whether there is corrosion according to the double index of ultrasonic energy decay and velocity of propagation variation.If there is corrosion, EAMT pops one's head in again around pipeline circular scan, and the pattern that uses single probe to transmit and receive produces bulk wave and carrys out measuring tube wall thickness, determines the position of corrosion on circumference.According to two location axially and on circumference, final realization corroding location and the setting on duct wall.
This Ultrasonic Nondestructive plumbing installation relies on the hardware and software integrated technology of EMAT technology and ultrasonic signal processing.EMAT technology, by its inner magnetic field and AC power, is directly brought out ultrasound wave at detected pipe interior, is a kind of contactless detection means, is highly suitable for the automatic detection of long-distance pipe.EMAT technology, without use couplant between sensor and pipeline outer wall, is not subject to pipeline surface blot, oxidation and irregular impact, thereby provides the foundation for realizing quick and full automatic detection simultaneously.On this basis, the pick-up unit of this detection system is at pipeline outer wall automatic creeping, realizes traditional point by point scanning formula method continuous gapless that is beyond one's reach and automatically detects.Do well out of high-frequency signal and the controllability of EMAT, this detection system can provide and point by point scanning formula method same precision testing result simultaneously.
Design different EMAT excitation field and coil according to different testing requirements, can in duct wall, produce the various guided waves such as shear wave, compressional wave, sharp keen ripple and Lamb wave, make probe seriation and the specialization of pick-up unit, thereby reduce operation easier, improve detection efficiency.
This Ultrasonic Nondestructive pipeline vehicular method for detecting pipeline merges the exclusive technological innovations such as bidimensional location and setting, realizes quick, the accurate and full automatic Non-Destructive Testing to various metal pipe internal wall corrosion conditions.This processes system and all compares same category of device with system integration aspect and have technical breakthrough in EMAT probe, ultrasonic signal, manufacture and operating cost low, easy and simple to handle.
The above is only to preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, every foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, and equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (3)
1. a Ultrasonic Nondestructive plumbing installation, is characterized in that, this Ultrasonic Nondestructive plumbing installation comprises: control center, motion detection device, mechanical motion unit, combined type EMAT sensor composition;
For transmitting and receiving the motion detection device of ultrasonic signal;
Be connected by feed cable and signal cable with motion detection device, move for controlling motion detection device, the sending and receiving of ultrasonic signal, and receive the real-time processing of signal and the control center that testing result shows;
Be connected with motion detection device, for realizing the mechanical motion unit of axially-movable and circumferential motion;
Be connected with motion detection device, produce guided wave and two kinds of function combination type EMAT sensors of bulk wave for realizing probe.
2. Ultrasonic Nondestructive plumbing installation as claimed in claim 1, is characterized in that, motion detection device is made up of a pair of EMAT probe, and each EMAT probe transmits and receives ultrasonic signal separately.
3. Ultrasonic Nondestructive plumbing installation as claimed in claim 2, is characterized in that, EMAT probe is used in combination, by an EMAT probe transmitting ultrasonic signal, another EMAT probe received ultrasonic signal.
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| CN201410384354.0A CN104155366A (en) | 2014-08-06 | 2014-08-06 | Ultrasonic non-destructive pipeline detection device |
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| CN201410384354.0A CN104155366A (en) | 2014-08-06 | 2014-08-06 | Ultrasonic non-destructive pipeline detection device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707108A (en) * | 2017-02-08 | 2017-05-24 | 浙江中新电力发展集团有限公司 | Detection device for full life cycle of transmission and distribution equipment based on guided wave technology and operating method thereof |
| CN107023756A (en) * | 2017-05-26 | 2017-08-08 | 成都润泰茂成科技有限公司 | A kind of ray pipeline corrodes scanning imaging system |
| CN107606387A (en) * | 2017-10-17 | 2018-01-19 | 北京理工大学珠海学院 | A kind of self-adapting pipe crawl device and pipe welding line detecting method |
| CN107643059A (en) * | 2016-12-01 | 2018-01-30 | 中国石油化工股份有限公司 | Electromagnetic acoustic on-line positioned thickness gauging method |
| CN107787789A (en) * | 2017-10-19 | 2018-03-13 | 湖南杂交水稻研究中心 | A kind of processing method for improving rice quality |
| RU177945U1 (en) * | 2017-08-09 | 2018-03-16 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптики" (Университет ИТМО) | Device for ultrasonic inspection of the pipeline |
| CN109030630A (en) * | 2018-07-15 | 2018-12-18 | 东北石油大学 | A kind of non-contact automatic tester of electromagnetic acoustic for storage tank bottom plate weld seam |
| CN109060962A (en) * | 2018-08-14 | 2018-12-21 | 中国石油大学(北京) | Test the device of different height sedimentary relative hardness and its application in crude oil storage tank |
| CN109844517A (en) * | 2016-10-19 | 2019-06-04 | 塞佩姆股份公司 | The method for automaticly inspecting the welding bead in the slot for being deposited on and being formed between two sheet metals to be assembled |
| CN110006998A (en) * | 2019-04-25 | 2019-07-12 | 上海工程技术大学 | It is a kind of for detecting the detection system and detection method of hollow pipe fitting weld seam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109844517A (en) * | 2016-10-19 | 2019-06-04 | 塞佩姆股份公司 | The method for automaticly inspecting the welding bead in the slot for being deposited on and being formed between two sheet metals to be assembled |
| CN107643059A (en) * | 2016-12-01 | 2018-01-30 | 中国石油化工股份有限公司 | Electromagnetic acoustic on-line positioned thickness gauging method |
| CN106707108A (en) * | 2017-02-08 | 2017-05-24 | 浙江中新电力发展集团有限公司 | Detection device for full life cycle of transmission and distribution equipment based on guided wave technology and operating method thereof |
| CN107023756A (en) * | 2017-05-26 | 2017-08-08 | 成都润泰茂成科技有限公司 | A kind of ray pipeline corrodes scanning imaging system |
| RU177945U1 (en) * | 2017-08-09 | 2018-03-16 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптики" (Университет ИТМО) | Device for ultrasonic inspection of the pipeline |
| CN107606387A (en) * | 2017-10-17 | 2018-01-19 | 北京理工大学珠海学院 | A kind of self-adapting pipe crawl device and pipe welding line detecting method |
| CN107787789A (en) * | 2017-10-19 | 2018-03-13 | 湖南杂交水稻研究中心 | A kind of processing method for improving rice quality |
| CN109030630A (en) * | 2018-07-15 | 2018-12-18 | 东北石油大学 | A kind of non-contact automatic tester of electromagnetic acoustic for storage tank bottom plate weld seam |
| CN109060962A (en) * | 2018-08-14 | 2018-12-21 | 中国石油大学(北京) | Test the device of different height sedimentary relative hardness and its application in crude oil storage tank |
| CN110006998A (en) * | 2019-04-25 | 2019-07-12 | 上海工程技术大学 | It is a kind of for detecting the detection system and detection method of hollow pipe fitting weld seam |
| CN110006998B (en) * | 2019-04-25 | 2021-10-26 | 扬州东升汽车零部件股份有限公司 | Detection system and detection method for detecting welding seam of hollow pipe fitting |
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Application publication date: 20141119 |