CN1376909A - Gamma-ray detecting method and device for in-duty pipeline network - Google Patents
Gamma-ray detecting method and device for in-duty pipeline network Download PDFInfo
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- CN1376909A CN1376909A CN 01107270 CN01107270A CN1376909A CN 1376909 A CN1376909 A CN 1376909A CN 01107270 CN01107270 CN 01107270 CN 01107270 A CN01107270 A CN 01107270A CN 1376909 A CN1376909 A CN 1376909A
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Abstract
A gamma ray method for measuring the thickness of in-duty pipeline, the thickness of deposis layer, the thickness of wrapper layer, and the depth and distribution of corroded pits features that a probe can receive the gamma-ray signal which has passed through the pipeline and the signal is analyzed to obtain said parameters. Said detector device is composed of gamma-ray source, receiving probe, signal analyzing processor and display. It has high safety.
Description
The present invention relates to a kind of gamma-rays detection method and device, relate in particular to the method and apparatus of a kind of gamma-rays detection at duty pipeline network.
The industrial and mineral pipe network has outer cladding mostly, and valve is often arranged midway, move towards complicated, and the caliber variation is more, and therefore the detection in duty pipeline network pipe wall thickness, precipitation thickness distribution becomes a difficult problem, and methods such as routine is ultrasonic, ray all are difficult for solving.Chinese patent 89101884.0 " method and apparatus of measuring tube wall erosion " discloses in a kind of employing pulse-echo ultrasound probe insertion high pressure gasifier wall and has fixed a point to bury, monitor that corroding method, the defective of this method are to be used for the general inspection of pipe network underground.Chinese patent 96102080.8 disclosed " mobile gamma digital imaging nondestructive inspection method and device and purposes " adopts gamma-rays to check container, lorry, pressure vessel etc., and this method then needs to protect specially the place.Chinese patent 99224389.0 disclosed " gamma-rays pipe detection device " adopts the inspection of ray film making method building the quality of pipeline laying, its defective be to make film need be stronger ray, influence safety, and also only be applicable to the not seam inspection of enclosure wall tube.
The objective of the invention is to overcome the deficiencies in the prior art and provide a kind of do not destroy pipeline cladding, quick and precisely check in method and this method of duty pipeline network employed at the duty pipeline network pick-up unit.
Detection method of the present invention can be finished by following steps:
1., the gamma-rays pick-up unit is installed on the tested pipeline;
2., start gamma-rays scanning tested pipeline, the gamma-rays that passes tested pipeline is received by probe;
3., the signal that receives of probe carries out sending into display after the data processing through multiple tracks signal analysis and processing device, shows the scanning curve figure by the transmitted intensity behind the tested pipeline;
4., scan-data is carried out Flame Image Process, record the parameters such as thickness, precipitation thickness, cladding thickness of tested pipeline, and the hot spot hole degree of depth and distribution plan.
Purpose of the present invention can realize by following technical measures: gamma-rays comprises gamma ray projector machine, receiving transducer, driving mechanism, signal analysis and processing device and display at the duty pipeline network pick-up unit, gamma ray projector machine and gamma-ray receiving transducer are contained in the programmed scanning mechanism, lay respectively at the both sides of tested pipeline, the signal of receiving transducer is delivered to display through the signal analysis and processing device.
Purpose of the present invention also can realize by following technical measures: gamma-rays comprises scanning planker, driving mechanism, substrate in the programmed scanning mechanism of duty pipeline network pick-up unit, and substrate is fixed on the tested pipeline by fixing snap ring.
Purpose of the present invention also can realize by following technical measures: gamma-rays comprises that at the duty pipeline network pick-up unit ray becomes the gamma ray projector machine of fan-shaped emission and linear array receiving transducer to be contained on the shelf, lays respectively at the both sides of tested pipeline.
The present invention has following advantage than prior art: scan the fluoroscopic examination pipeline by adopting gamma-rays, electronic surveying probe received signal and computer data Flame Image Process, the method for drawing tube wall and precipitation measurement curve, can under the situation of stripping channel cladding not, detect pipe wall thickness, beds of precipitation thickness and distribution situation in real time, exactly at duty pipeline network.Do not need radial scan also can obtain tube wall and precipitation measurement curve fast when adopting linear array programmed scanning mechanism, and scanning vertically also can obtain and the similar two-dimentional pipeline wall thickness of perspective photograph, precipitation and some hole distributed image.Because the present invention adopts low-activity HIGH ENERGY GAMMA RAY SOURCE, narrow slit directionally aligning structure, high sensitivity electronics receiving transducer, make this somascope need with gamma intensity significantly reduce, thereby improved radsafe, so be used in the online detection of carrying out the in-service pipeline net under the working condition.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 scans the structural representation of online pipe network pick-up unit for the embodiment of the invention one single probe gamma-rays.
Fig. 2 uses the gamma-rays of single probe for the embodiment of the invention one and scans the synoptic diagram of online pipe network detection method.
Fig. 3 scans the structural representation of online pipe network pick-up unit for embodiment of the invention two wires array scanning mechanism gamma-rays.
As depicted in figs. 1 and 2, the used gamma-rays of the detection method of embodiment one comprises gamma-ray machine 1, receiving transducer 4, programmed scanning mechanism 5, signal analysis and processing device 8, display 7 at the duty pipeline network pick-up unit.Gamma ray projector machine 1 is contained on the programmed scanning machine plate 2, and gamma ray projector machine 1 and gamma-ray receiving transducer 4 are contained in the both sides of tested pipeline respectively, and the signal of receiving transducer 4 is delivered to display 7 through signal analysis and processing device 8.Programmed scanning mechanism comprises scanning planker 2, motor leading screw driving mechanism 5, substrate 3, and substrate 3 is fixed on the tested pipeline by fixing snap ring 6 again.
As shown in Figure 2, the detection method of the present invention of embodiment one employing is finished by following steps:
Open fixedly two semicircles of snap ring 6, be enclosed within the tested position of pipeline, the fixedly snap ring 6 that closes is installed in the gamma-rays pick-up unit on the tested pipeline;
Start the programmed scanning driving mechanism 5 of gamma-rays pick-up unit, drag gamma ray projector machine 1 and probe 4, the scanning tested pipeline;
When the gamma-rays of gamma ray projector machine 1 emission passed tested pipeline, transmitted intensity was decayed by following formula:
In the formula, I
0Be the incident gamma intensity, I is decay back gamma intensity.Compare II
0Can analyze the situation of tested pipeline with I.
By 4 signals that receive after gamma-rays pass tested pipeline of popping one's head in;
The signals that probe 4 is received amplify, send into computerized multiple tracks signal analysis and processing device 8, are shown the parametric lines such as thickness, cladding thickness of tested pipelines by display 7.
As shown in Figure 3, the used gamma-rays of the detection method among the embodiment two comprises gamma ray projector machine 9, linear array probe 11 and the scanning bracket 10 of ray with fan-shaped emission at the duty pipeline network pick-up unit.Gamma ray projector machine 9 and linear array probe 11 are installed in the programmed scanning mechanism 10, and gamma ray projector machine 9 and linear array receiving transducer 11 are contained in the both sides of tested pipeline respectively.The output of linear array probe 11 is connected to multiple tracks signal analysis and processing device 8, and signal analysis and processing device 8 connects display 7.
The method that embodiment two adopts can be finished by following steps:
The programmed scanning mechanism 10 of gamma-rays linear array pick-up unit is installed on the tested pipeline;
Open gamma ray projector machine 9, ray passes whole tested pipeline cross section with fan-shaped subtended angle emission, and when the gamma-rays of gamma ray projector machine 9 emissions passed tested pipeline, transmitted intensity was decayed by following formula:
In the formula, I
0Be the incident gamma intensity, I is decay back gamma intensity.Compare II
0Can analyze the situation of tested pipeline with I.
Receive the signal that gamma-rays passes the tested pipeline cross section by probe 11;
The signal that linear array receiving transducer 11 is received amplifies, sends into computerized multiple tracks signal analysis and processing device 8, carries out analyzing and processing, sends into display 7 then, parametric lines such as the thickness in a cross section of demonstration tested pipeline, cladding thickness, precipitation thickness.
When the scanning mechanism 10 that starts gamma-rays linear array pick-up unit scans tested pipeline vertically; By the synchronous scanning data processing, obtain duct thickness, cladding thickness, precipitation thickness map and the corrosive pipeline point hole degree of depth and the distribution plan in a series of cross sections.When scanning mechanism 10 rotates around pipeline, utilize the CT data processing software also can obtain pipeline section figure.
Claims (4)
1, a kind of in the duty pipeline network detection method, it is characterized in that and can finish by following steps:
1., the gamma-rays pick-up unit is installed on the tested pipeline;
2., start gamma-rays scanning tested pipeline, the gamma-rays that passes tested pipeline is received by probe (4);
3., the signal that receives of probe (4) sends into display (7) after multiple tracks signal analysis and processing device (8) carries out data processing, show the scanning curve figure by the transmitted intensity behind the tested pipeline;
4., scan-data is carried out Flame Image Process, record the parameters such as thickness, precipitation thickness, cladding thickness of tested pipeline, and the hot spot hole degree of depth and distribution plan.
2, a kind of at the employed gamma-rays of duty pipeline network detection method at the duty pipeline network pick-up unit, comprise gamma ray projector machine (1), receiving transducer (4), driving mechanism (5), signal analysis and processing device (8) and display (7), it is characterized in that: gamma ray projector machine (1) and gamma-ray receiving transducer (4) are contained in the programmed scanning mechanism, lay respectively at the both sides of tested pipeline, the signal of receiving transducer (4) is delivered to display (7) through signal analysis and processing device (8).
3, gamma-rays according to claim 2 is characterized in that at the duty pipeline network pick-up unit: programmed scanning mechanism comprises scanning planker (2), driving mechanism (5), substrate (3), and substrate (3) is fixed on the tested pipeline by fixing snap ring (6).
4, gamma-rays according to claim 2 is characterized in that at the duty pipeline network pick-up unit: ray becomes the gamma ray projector machine (9) of fan-shaped emission and linear array receiving transducer (11) to be contained on the shelf, lays respectively at the both sides of tested pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107270 CN1376909A (en) | 2001-03-23 | 2001-03-23 | Gamma-ray detecting method and device for in-duty pipeline network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107270 CN1376909A (en) | 2001-03-23 | 2001-03-23 | Gamma-ray detecting method and device for in-duty pipeline network |
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| CN1376909A true CN1376909A (en) | 2002-10-30 |
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| CN 01107270 Pending CN1376909A (en) | 2001-03-23 | 2001-03-23 | Gamma-ray detecting method and device for in-duty pipeline network |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7561976B2 (en) | 2003-03-11 | 2009-07-14 | Oxand | Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| CN103471534A (en) * | 2012-06-08 | 2013-12-25 | 中国原子能科学研究院 | Pipe network ray detection apparatus |
| CN105571538A (en) * | 2015-12-25 | 2016-05-11 | 中海油能源发展股份有限公司 | Method for gamma-ray programmed partitioning scanning detection of wall thickness of LNG heat insulation coating pipe |
| CN109357645A (en) * | 2018-12-12 | 2019-02-19 | 四川沐迪圣科技有限公司 | A kind of packaged type ultrasonic wave bend pipe measuring thickness device |
| CN109791114A (en) * | 2016-07-27 | 2019-05-21 | 彼得·泰莱基 | The method of the geometric parameter and/or materials behavior of research object is determined by radiography techniques |
| CN110412062A (en) * | 2019-07-24 | 2019-11-05 | 广东石油化工学院 | A kind of diagnosis and monitoring method that Clad pipe corrosion is abnormal |
| CN112610902A (en) * | 2020-12-11 | 2021-04-06 | 吉林建筑大学 | Method for detecting biological scale of pipe network in old city area |
| CN114166157A (en) * | 2021-12-08 | 2022-03-11 | 国能锅炉压力容器检验有限公司 | Method for intelligently quantifying oxide skin in pipe according to ray intensity curve |
-
2001
- 2001-03-23 CN CN 01107270 patent/CN1376909A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1784589B (en) * | 2003-03-11 | 2012-04-18 | 奥克桑德公司 | Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| US7561976B2 (en) | 2003-03-11 | 2009-07-14 | Oxand | Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| CN103471534A (en) * | 2012-06-08 | 2013-12-25 | 中国原子能科学研究院 | Pipe network ray detection apparatus |
| CN103471534B (en) * | 2012-06-08 | 2016-09-14 | 中国原子能科学研究院 | Pipe network ray detecting apparatus |
| CN105571538A (en) * | 2015-12-25 | 2016-05-11 | 中海油能源发展股份有限公司 | Method for gamma-ray programmed partitioning scanning detection of wall thickness of LNG heat insulation coating pipe |
| CN105571538B (en) * | 2015-12-25 | 2018-01-09 | 中海油能源发展股份有限公司 | The method of the program control subarea-scanning detection LNG insulations cladding thickness of pipe wall of gamma-rays |
| CN109791114B (en) * | 2016-07-27 | 2022-08-02 | 彼得·泰莱基 | Method for determining geometrical parameters and/or material state of object under investigation by means of radiography |
| CN109791114A (en) * | 2016-07-27 | 2019-05-21 | 彼得·泰莱基 | The method of the geometric parameter and/or materials behavior of research object is determined by radiography techniques |
| CN109357645A (en) * | 2018-12-12 | 2019-02-19 | 四川沐迪圣科技有限公司 | A kind of packaged type ultrasonic wave bend pipe measuring thickness device |
| CN110412062B (en) * | 2019-07-24 | 2022-03-15 | 广东石油化工学院 | Diagnosis and monitoring method for corrosion abnormity of clad pipeline |
| CN110412062A (en) * | 2019-07-24 | 2019-11-05 | 广东石油化工学院 | A kind of diagnosis and monitoring method that Clad pipe corrosion is abnormal |
| CN112610902A (en) * | 2020-12-11 | 2021-04-06 | 吉林建筑大学 | Method for detecting biological scale of pipe network in old city area |
| CN112610902B (en) * | 2020-12-11 | 2022-07-08 | 吉林建筑大学 | Method for detecting biological scale of pipe network in old city area |
| CN114166157A (en) * | 2021-12-08 | 2022-03-11 | 国能锅炉压力容器检验有限公司 | Method for intelligently quantifying oxide skin in pipe according to ray intensity curve |
| CN114166157B (en) * | 2021-12-08 | 2023-10-20 | 国能锅炉压力容器检验有限公司 | Intelligent quantitative method for oxide skin in tube according to ray intensity curve |
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