CN110954564A - Pipeline welding seam center transillumination method and device capable of rolling with gamma source - Google Patents
Pipeline welding seam center transillumination method and device capable of rolling with gamma source Download PDFInfo
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- CN110954564A CN110954564A CN201911332870.8A CN201911332870A CN110954564A CN 110954564 A CN110954564 A CN 110954564A CN 201911332870 A CN201911332870 A CN 201911332870A CN 110954564 A CN110954564 A CN 110954564A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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Abstract
A pipeline weld center transillumination method capable of rolling with a gamma source is applied to a transmission system, the transmission system comprises a mobile device, and the method comprises the following steps: arranging a gamma source tube on the moving device, and adjusting the position of the gamma source tube on the moving device to enable the gamma source tube to be positioned at the center of a target pipeline; moving the moving device in the target pipeline to move one end of the gamma source pipe to the center of the welding seam; extending a gamma source from one end of a gamma source pipe, which extends out of a target pipeline, into the gamma source pipe, extending the gamma source from the other end of the gamma source pipe, irradiating a welding line by the gamma source, and exposing a film wrapped outside the welding line by the gamma source; and judging whether the welding seam has defects through the exposed film. The invention ensures that the gamma source is positioned at the center of the welding seam by controlling the distance of the moving device entering the pipeline, ensures the precision of the placement position of the gamma source, and ensures that the gamma source is positioned at the center of the pipeline and the center of the welding seam at the same time.
Description
Technical Field
The invention relates to a pipeline weld joint detection method, in particular to a pipeline weld joint center transillumination method capable of rolling along with a gamma source.
Background
The gamma rays can penetrate through the metal material to different degrees, and have sensitization effect on the photographic film. By utilizing the performance, when the ray passes through the welding seam to be inspected, the ray has different intensity on the film and different photosensitive degree of the film due to different absorption capacity of the welding seam defect to the ray, so that the shape, the position and the size of the defect can be accurately, reliably and nondestructively displayed. At the same time, to minimize distortion of the defective image on the negative, the most effective method is to transilluminate the source centrally within the tube.
With the development of industrial projects in China towards large scale, the application of large-wall-thickness equipment is continuously increased, the projects of transporting the west gas and the east gas are continuously expanded, and the most effective detection method for the large-wall-thickness equipment and the long-distance pipeline of transporting the west gas and the east gas is to use a gamma-ray source for central transillumination. Especially for the detection of long-distance pipelines, most pipelines are in the field, mountain areas and other areas without power supplies, the gamma rays can effectively solve the problem without power supplies, the detection speed of the gamma rays is high, and the detection method of similar projects is preferred because the negative defects obtained through the central transillumination of the gamma rays have high truth. At present, when a pipeline is detected, a worker only places a gamma source pipe into the pipeline and extends out the gamma source from one end of the gamma source pipe, which is positioned in the pipeline.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a pipeline welding seam center transillumination method capable of carrying a gamma source to roll, wherein the position accuracy of the gamma source is ensured.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
in a first aspect, a piping weld center transillumination method capable of rolling with a gamma source is provided, which is applied to a transmission system, wherein the transmission system comprises a mobile device, and the method comprises the following steps:
arranging a gamma source tube on the moving device, and adjusting the position of the gamma source tube on the moving device to enable the gamma source tube to be positioned at the center of a target pipeline;
moving the moving device in the target pipeline to move one end of the gamma source pipe to the center of the welding seam;
extending a gamma source from one end of a gamma source pipe, which extends out of a target pipeline, into the gamma source pipe, extending the gamma source from the other end of the gamma source pipe, irradiating a welding line by the gamma source, and exposing a film wrapped outside the welding line by the gamma source;
and judging whether the welding seam has defects through the exposed film.
The invention discloses a pipeline weld center transillumination method capable of carrying gamma source rolling, wherein a moving device is moved in a target pipeline to move one end of a gamma source pipe to the center position of a weld, and the method comprises the following steps:
and fixing the moving device to fix one end of the gamma source pipe to the center of the welding seam.
The invention discloses a gamma source rolling pipeline weld center transillumination method, wherein the device moves in a target pipeline to the position of the weld center, and the method comprises the following steps:
and calculating the distance from the center of the welding seam to one end of the gamma source pipe, and moving the moving device to the direction of the target welding seam by the corresponding distance.
The second aspect provides a pipeline weld center transillumination device capable of rolling with a gamma source, which comprises:
a fixing mechanism for fixing the target gamma source tube;
the fixing mechanism is arranged on the supporting mechanism;
and the moving wheel is arranged at the bottom of the supporting mechanism and used for moving the whole device.
The invention relates to a gamma source rolling pipeline welding seam center transillumination device, wherein a fixing mechanism comprises:
a first fixing member, one end of which is disposed on the supporting mechanism and has:
the first fixing hole penetrates through the first fixing piece and is matched with the target gamma source tube;
a second fixing member, one end of which is provided on the support mechanism, having:
and the second fixing hole penetrates through the second fixing piece, is the same as the first fixing hole in height, and is matched with the target gamma source tube.
The gamma source rolling pipeline welding seam center transillumination device is characterized in that the moving wheel is a magnetic roller.
The invention relates to a gamma source rolling pipeline welding seam center transillumination device, which further comprises:
the first control device is used for controlling the movement of the movable roller;
and the second control device is in communication connection with the first control device and can control the first control device.
The invention relates to a gamma source rolling pipeline welding seam center transillumination device, wherein a fixing mechanism comprises:
and the third fixing pieces are arranged at the positions of the first fixing hole and the second fixing hole respectively and are used for fixing the target gamma source tube.
The gamma-source rolling pipeline welding seam center transillumination device is characterized in that a plurality of first fixing holes are formed in the first fixing piece from bottom to top; the second fixing holes are multiple and are respectively formed in the second fixing piece from bottom to top.
Compared with the prior art, the invention has the beneficial effects that:
when the gamma source pipe is used, the gamma source pipe is placed on the moving device, the position of the gamma source pipe is adjusted on the moving device, the gamma source pipe is located at the center of the pipeline, then one end of the gamma source pipe is moved to the center of the welding seam by the moving device, the gamma source is conveyed to the center of the welding seam from the gamma source pipe, the position of the welding seam is irradiated by the gamma source, a film wrapped outside the welding seam irradiates the welding seam through the gamma source and then exposes the film, whether the welding seam has defects or not is judged by the exposed film, and the position of the gamma source pipe is adjusted by the moving device before entering the target pipeline and cannot be changed after entering the pipeline, so that the position of the gamma source pipe can be ensured and the gamma source pipe is located at the center of the; meanwhile, the distance of the moving device entering the pipeline is controlled, so that the gamma source is positioned at the center of the welding line, the precision of the placement position of the gamma source is ensured, and the gamma source is positioned at the center of the pipeline and at the same time is positioned at the center of the welding line.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the method of the present invention;
FIG. 2 is a view of an embodiment of the apparatus of the present invention;
FIG. 3 is a view of the device of the present invention in use;
Detailed Description
Referring to fig. 1-3, it should be understood by those skilled in the art that the terms "upper", "lower", "below", and the like, in the present disclosure, refer to an orientation or positional relationship shown in the drawings, which is for convenience in describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus the terms should not be construed as limiting the present invention.
It should be noted that, as the industrial project in China is developing towards a large scale, the application of the large-wall-thickness equipment is increasing, the project of transporting west gas and east gas is expanding, and the most effective detection method for the large-wall-thickness equipment and the long-distance pipeline of transporting west gas and east gas is to use a gamma-ray source for central transillumination. Especially for the detection of long-distance pipelines, most pipelines are in the field, mountain areas and other areas without power supplies, the gamma rays can effectively solve the problem without power supplies, the detection speed of the gamma rays is high, and the detection method of similar projects is preferred because the negative defects obtained through the central transillumination of the gamma rays have high truth. At present, when a pipeline is detected, a worker only places a gamma source pipe into the pipeline and extends out the gamma source from one end of the gamma source pipe, which is positioned in the pipeline.
Based on the above, the invention provides a pipeline weld center transillumination method capable of rolling with a gamma source, which is applied to a transmission system, wherein the transmission system comprises a mobile device, and the method comprises the following steps:
s101, arranging a gamma source pipe on the moving device, and adjusting the position of the gamma source pipe on the moving device to enable the gamma source pipe to be located at the center of a target pipeline;
s102, moving the moving device in the target pipeline to move one end of the gamma source pipe to the center of the welding seam;
s103, extending a gamma source from one end of a gamma source pipe, which extends out of a target pipeline, into the gamma source pipe, extending the gamma source from the other end of the gamma source pipe, irradiating a welding seam by the gamma source, and exposing a film wrapped outside the welding seam by the gamma source;
s104, judging whether the welding seam has defects through the exposed film.
When the gamma source pipe is used, the gamma source pipe is placed on the moving device, the position of the gamma source pipe is adjusted on the moving device, the gamma source pipe is located at the center of the pipeline, then one end of the gamma source pipe is moved to the center of the welding seam by the moving device, the gamma source is conveyed to the center of the welding seam from the gamma source pipe, the position of the welding seam is irradiated by the gamma source, a film wrapped outside the welding seam irradiates the welding seam through the gamma source and then exposes the film, whether the welding seam has defects or not is judged by the exposed film, and the position of the gamma source pipe is adjusted by the moving device before entering the target pipeline and cannot be changed after entering the pipeline, so that the position of the gamma source pipe can be ensured and the gamma source pipe is located at the center of the; meanwhile, the distance of the moving device entering the pipeline is controlled, so that the gamma source is positioned at the center of the welding line, the precision of the placement position of the gamma source is ensured, and the gamma source is positioned at the center of the pipeline and at the same time is positioned at the center of the welding line.
It should be noted that the target pipeline refers to a pipeline to be detected, the position in the center of the target pipeline refers to the position in the central axis of the target pipeline, the target weld refers to a weld to be detected, and the position in the center of the target weld refers to the position in the center of the width of the target weld.
In some embodiments, moving the moving means in the target pipe to move the gamma-source pipe to the weld center position includes:
and fixing the moving device to fix one end of the gamma source pipe to the center of the welding seam.
After one end of the gamma source pipe is fixed at the center of the welding seam, the moving device is fixed, so that one end of the gamma source pipe is fixed at the center of the welding seam, and the gamma source can be fixed at the center of the target pipeline and the center of the target welding seam.
In some embodiments, moving the moving means in the target pipe to move the gamma-source pipe to the weld center position includes:
calculating the distance from the center of the welding seam to one end of the gamma source pipe, and moving the mobile device to the direction of the target welding seam by the corresponding distance;
and moving the corresponding distance according to the calculated distance, so that one end of the gamma source pipe can be effectively moved to the central position of the welding seam.
In general, the γ source is provided in the γ source device, and after the γ source tube is moved to a corresponding position, the γ source is called by the γ source device and moved to a corresponding position by the γ source tube.
The embodiment provides a pipeline weld center transillumination device capable of rolling with a gamma source, which comprises:
a fixing mechanism 100 for fixing the target gamma source tube;
the supporting mechanism 200, the fixing mechanism 100 is arranged on the supporting mechanism 200;
and a moving wheel 300 provided at the bottom of the supporting mechanism 200 for moving the entire apparatus.
When the device is used specifically, the target gamma source tube is fixed on the fixing mechanism, the supporting mechanism is moved through the moving wheel, the fixing mechanism is arranged on the supporting mechanism, and then the fixing mechanism is moved, so that the target gamma source tube is fixed.
Illustratively, the supporting mechanism may be implemented by a supporting plate, as shown in fig. 2, but is not limited thereto.
In some embodiments, the securing mechanism 100 includes:
the first fixing member 110 is disposed on the supporting mechanism 200 at one end, and includes:
a first fixing hole 111, which penetrates through the first fixing member 110, and the first fixing hole 111 is matched with the target gamma source tube;
the second fixing member 120, one end of which is provided to the support mechanism 200, includes:
and a second fixing hole 121, wherein the second fixing hole 121 penetrates the second fixing member 120, and has the same height as the first fixing hole 111, and the first fixing hole 111 is matched with the target gamma source tube.
When the device is used specifically, the target gamma source tube is arranged in the first fixing hole and the second fixing hole, and the target gamma source tube is fixed through the first fixing hole and the second fixing hole.
For example, the moving wheel 300 is a magnetic roller, and when the moving wheel moves to a corresponding position, the moving wheel may be attracted to the target pipe by opening the magnetic roller.
In some embodiments, further comprising:
a first control means 400 for controlling the movement of the moving wheel 300;
and a second control device, which is in communication connection with the first control device 400 and can control the first control device 400.
The second control device controls the first device and further controls the moving distance of the moving wheel, and the target gamma source tube is moved to the target position by controlling the moving distance of the moving wheel.
The first control device adopts a controller to control a driving motor of the roller, the driving motor is not shown in the figure, which is the prior art and is not described in detail herein; the second control device can adopt a remote controller, and the first control device is controlled by the remote controller so as to control the distance of rolling movement.
In some embodiments, the securing mechanism 100 includes:
and the third fixing pieces are arranged at the positions of the first fixing hole and the second fixing hole respectively and are used for fixing the target gamma source tube.
The third fixing member is not shown in the drawings, and is used for fixing the gamma source tube when the gamma source tube needs to be fixed after passing through the first fixing hole and the second fixing hole, and the third fixing member may adopt a snap, a clamping piece, etc., which are prior art and will not be described in detail herein.
The first fixing holes 111 are multiple and are respectively arranged on the first fixing piece 110 from bottom to top; the plurality of second fixing holes 121 are respectively disposed on the second fixing member 120 from bottom to top.
The first fixing holes 111 and the second fixing holes 121 are provided in plural, so that the height of the target gamma source tube can be adjusted according to the diameter of the pipeline, and the device can be applied to target pipelines with different diameters.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, which is defined by the claims.
Claims (9)
1. A pipeline welding seam center transillumination method capable of rolling with a gamma source is applied to a transmission system, the transmission system comprises a moving device, and the method comprises the following steps:
arranging a gamma source tube on the moving device, and adjusting the position of the gamma source tube on the moving device to enable the gamma source tube to be positioned at the center of a target pipeline;
moving the moving device in the target pipeline to move one end of the gamma source pipe to the center of the welding seam;
extending a gamma source from one end of a gamma source pipe, which extends out of a target pipeline, into the gamma source pipe, extending the gamma source from the other end of the gamma source pipe, irradiating a welding line by the gamma source, and exposing a film wrapped outside the welding line by the gamma source;
and judging whether the welding seam has defects through the exposed film.
2. The method for transilluminating the weld center of the pipeline with the rolling gamma source as claimed in claim 1, wherein the moving device is moved in the target pipeline to move one end of the gamma source pipe to the position of the weld center, and comprises the following steps:
and fixing the moving device to fix one end of the gamma source pipe to the center of the welding seam.
3. The gamma-source rolling pipe weld center transillumination method according to claim 1, wherein the device is moved in the target pipe to the weld center position, comprising:
and calculating the distance from the center of the welding seam to one end of the gamma source pipe, and moving the moving device to the direction of the target welding seam by the corresponding distance.
4. A pipeline welding seam center transillumination device capable of rolling along with a gamma source is characterized by comprising:
a fixing mechanism (100) for fixing the target gamma source tube;
a support mechanism (200), the fixing mechanism (100) being provided on the support mechanism (200);
and the moving wheel (300) is arranged at the bottom of the supporting mechanism (200) and is used for moving the whole device.
5. The gamma-source rolling pipe weld center transillumination device according to claim 4, wherein the fixing mechanism (100) comprises:
a first fixing member (110) having one end provided to the support mechanism (200) and including:
a first fixing hole (111), wherein the first fixing hole (111) penetrates through the first fixing piece (110), and the first fixing hole (111) is matched with the target gamma source tube;
a second fixing member (120) having one end provided to the support mechanism (200) and including:
and the second fixing hole (121) penetrates through the second fixing piece (120), the height of the second fixing hole (121) is the same as that of the first fixing hole (111), and the first fixing hole (111) is matched with the target gamma source tube.
6. The portable gamma-source rolling pipe weld center transillumination device according to claim 4, wherein the moving wheel (300) is a magnetic roller.
7. The portable gamma-source rolling pipe weld center transillumination device according to claim 4, further comprising:
a first control device (400) for controlling the movement of the moving roller;
and the second control device is in communication connection with the first control device and can control the first control device.
8. The portable gamma-source rolling pipe weld center transillumination device according to claim 4, wherein the fixing mechanism (100) comprises:
and the third fixing pieces are arranged at the positions of the first fixing hole and the second fixing hole respectively and are used for fixing the target gamma source tube.
9. The pipeline weld center transillumination device capable of carrying out rolling by using the gamma source as claimed in claim 4, wherein a plurality of first fixing holes (111) are respectively formed in the first fixing piece (110) from bottom to top; the second fixing holes (121) are multiple and are respectively arranged on the second fixing piece (120) from bottom to top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332870.8A CN110954564A (en) | 2019-12-23 | 2019-12-23 | Pipeline welding seam center transillumination method and device capable of rolling with gamma source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911332870.8A CN110954564A (en) | 2019-12-23 | 2019-12-23 | Pipeline welding seam center transillumination method and device capable of rolling with gamma source |
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| CN110954564A true CN110954564A (en) | 2020-04-03 |
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| CN201911332870.8A Pending CN110954564A (en) | 2019-12-23 | 2019-12-23 | Pipeline welding seam center transillumination method and device capable of rolling with gamma source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112730467A (en) * | 2020-12-22 | 2021-04-30 | 福建福清核电有限公司 | Central method radiographic inspection positioning method |
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Application publication date: 20200403 |