CN107703163B - Bispin formula high-pressure line welding seam positioner that detects a flaw - Google Patents
Bispin formula high-pressure line welding seam positioner that detects a flaw Download PDFInfo
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- CN107703163B CN107703163B CN201710956748.2A CN201710956748A CN107703163B CN 107703163 B CN107703163 B CN 107703163B CN 201710956748 A CN201710956748 A CN 201710956748A CN 107703163 B CN107703163 B CN 107703163B
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Abstract
The invention discloses a double-rotation type high-pressure pipeline welding seam flaw detection positioning device which comprises a connecting mechanism, a supporting frame, a supporting and traveling mechanism, a gamma source containing and conveying positioning unit and a video transmission and positioning unit, wherein the gamma source containing and conveying positioning unit is connected with the video transmission and positioning unit; two ends of the connecting mechanism are respectively provided with a support frame, and the outer end surface of each support frame is provided with a support walking mechanism; the center of the support frame is arranged in a hollow way and is communicated with the hollow channel of the connecting mechanism; the gamma source accommodating, conveying and positioning unit is arranged in a hollow channel between the connecting mechanism and the support frame, and the video transmission and positioning unit is arranged at the front end of the gamma source accommodating, conveying and positioning unit. The invention has good sensitivity, small influence of scattered rays and high defect detection rate; the central transillumination detection of the pipeline welding seam with large difficulty coefficient can be realized; the transillumination time is greatly shortened, and the operation efficiency is obviously improved; the automatic walking device is not influenced by any station, can automatically walk, improves the using effect, is convenient to operate, and enlarges the testing range.
Description
Technical Field
The invention relates to the technical field of high-pressure pipeline weld seam flaw detection, in particular to a double-rotation type high-pressure pipeline weld seam flaw detection positioning device.
Background
Flaw detection, also called "non-destructive inspection", is a technique for inspecting metal surfaces and welds for defects. The internal defects of the welding seam generally comprise air holes, cracks, slag, incomplete penetration, incomplete fusion and the like. Common nondestructive testing methods for internal defects of welds include ultrasonic testing (ultrasonic testing and TOFD), and radiation testing (X-ray and gamma-ray). The X-ray or gamma ray is used to penetrate through the weld metal and the photographic negative is used for exposure, and the image is used as photographic negative, so that it can be checked at any time, just like X-ray for human body. The pipeline welding joint in the general industrial device needs to be subjected to ray detection according to the requirements of design files, and nondestructive inspection data needs to be kept and filed.
With the requirement that high-pressure thick-wall metal pipelines are used as medium conveying channels in domestic large industrial devices, such as high-pressure hydrogenation devices in the refining industry, steam turbine generator sets in the power industry, nuclear power devices and the like, the welding quality of the pipelines directly relates to the reliability of transportation. As novel equipment for detecting the quality of welding seams, the research and application of pipeline detection equipment become hot spots of research at home and abroad.
When a flaw detection mechanism in an existing high-pressure pipeline walks in the pipeline, manual pushing is usually performed, the mode increases the workload of personnel, and the application range is low. And all are fixed knot structure, can't bend to lead to accredited testing organization can't carry out the flaw detection to the crooked position of pipeline, the result of use is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-rotation type high-pressure pipeline welding seam flaw detection positioning device, which can realize visual and accurate positioning during the transillumination of the gamma source center of a multi-elbow connected high-pressure pipeline welding seam, can be used for detecting welding seams with different pipe diameters and solves the problems of low work efficiency and unstable quality of flaw detection in a high-pressure pipeline.
In order to solve the technical problems, the invention adopts the following technical scheme:
a double-rotation type high-pressure pipeline welding seam flaw detection positioning device comprises a connecting mechanism, a support frame, a support walking mechanism, a gamma source containing and conveying positioning unit and a video transmission and positioning unit;
two ends of the connecting mechanism are respectively provided with a support frame, and the outer end surface of each support frame is provided with a support walking mechanism;
the connecting mechanism comprises a left universal joint supporting rod, a right universal joint supporting rod, a universal joint ball, a left universal joint connecting pipe, a right universal joint connecting pipe and a spring, the left universal joint supporting rod and the right universal joint supporting rod are coaxially arranged, universal joint balls are respectively arranged at two adjacent ends of the left universal joint supporting rod and the right universal joint supporting rod, and the universal joint balls are respectively arranged in the left universal joint connecting pipe and the right universal joint connecting pipe; the left universal joint support rod, the left universal joint connecting pipe, the right universal joint connecting pipe and the right universal joint support rod are arranged in sequence; the spring is arranged between the left universal joint connecting pipe and the right universal joint connecting pipe to connect the left universal joint connecting pipe and the right universal joint connecting pipe; the centers of the left universal joint support rod, the universal joint ball, the left universal joint connecting pipe, the right universal joint support rod and the spring axis are all arranged in a hollow mode, and a hollow channel of the connecting mechanism is formed together;
the support frame is respectively provided with a left end of a left universal joint support rod and a right end of a right universal joint support rod, and the center of the support frame is arranged in a hollow manner and is communicated with a hollow channel of the connecting mechanism; the gamma source accommodating, conveying and positioning unit is arranged in a hollow channel between the connecting mechanism and the support frame, and the video transmission and positioning unit is arranged at the front end of the gamma source accommodating, conveying and positioning unit;
the supporting and traveling mechanism comprises a moving wheel, a frame, an electric cylinder, a two-way motor and a supporting plate, wherein the inner end of the moving wheel is connected with the two-way motor, the two-way motor is arranged in the supporting plate, the supporting plate is arranged on the inner side of the moving wheel, the two-way motor penetrates through the supporting plate to be connected with the moving wheel, the electric cylinder is arranged at the lower end of the supporting plate and is embedded on the bottom end face in the frame, the frame is arranged on the outer end face of the supporting frame, and the moving wheel and the supporting plate are both arranged;
the gamma source containing and conveying positioning unit comprises a source conveying pipe, a source positioning pipe and a steel strand, wherein the source conveying pipe is arranged in a hollow channel between the connecting mechanism and the support frame, the source positioning pipe is arranged at the top end of the hollow channel, the gamma source is arranged at the front end of the steel strand, and the steel strand positions the gamma source in the source positioning pipe through the source conveying pipe; the gamma source sequentially passes through the support frame, the right universal joint support rod, the universal joint ball at the center of the right universal joint connecting pipe, the spring, the universal joint ball at the center of the left universal joint connecting pipe, the left universal joint support rod and the support frame arranged at one end of the left universal joint support rod through the source transmission pipe, and is locked after reaching the source positioning pipe;
the video transmission and positioning unit comprises a light emitting unit and a camera shooting unit; the light emitting unit comprises a fixing mechanism, a rotary adjusting mechanism and two light emitters; the fixing mechanism is used for fixing the whole light emitting unit at the front end of the source positioning tube; the two light ray emitters are symmetrically arranged on two sides of a gamma source of the source positioning tube, and the light ray irradiation angles are symmetrical relative to the gamma source; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the light ray emitter and used for adjusting the light ray emitting direction of the light ray emitting mechanism and controlling the light ray to irradiate at or near the welding seam;
the camera shooting unit also comprises a fixing mechanism, a rotation adjusting mechanism, a camera shooting sensor and a display mechanism; the fixing mechanism is used for fixing the camera sensor on the support frame; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the camera sensor and used for adjusting the visual angle of the camera sensor; the display mechanism displays an output result of the image sensor.
Further, the support frame is equipped with two, it is equipped with six to support running gear, six it is the same to support the running gear structure, two the support frame outer end all evenly is equipped with three support running gear.
Further, the universal joint ball symmetry sets up in the spring both sides, all be provided with fastening bolt on left side universal joint connecting pipe and the right universal joint connecting pipe, and fastening bolt is connected with left universal joint connecting pipe and right universal joint connecting pipe respectively through the screw thread, and the fastening bolt lower extreme sets up the universal joint ball.
Furthermore, three multi-section fixed arms are evenly arranged at the outer end of the supporting frame, and the tail ends of the multi-section fixed arms are connected with a frame supporting the traveling mechanism.
Furthermore, a flexible hose is mounted at the upper end of the support frame and arranged above the left universal joint support rod and the right universal joint support rod, and the flexible hose is connected with the support frame through bolts.
Furthermore, the outer ends of the left universal joint support rod and the right universal joint support rod are respectively provided with an external thread, the center of the support frame is provided with an internal thread, and the left universal joint support rod and the right universal joint support rod are connected with the support frame through the internal thread and the external thread.
The gamma source conveying pipe is designed in the center of the whole connecting mechanism, and has the function that in operation, the gamma source conveying steel strand is connected with the device and sends a gamma source to a source positioning pipe at the end part of the whole device through the source conveying pipe;
the video transmission and positioning unit can preset the angles of the light ray emitter and the camera sensor according to the pipe diameter; the light ray emitters are symmetrically arranged on two sides of a gamma source ray of the source positioning tube, the gamma source ray shines through to a welding seam, the light ray emitters are linear infrared ray emitters, and therefore when the welding seam with different pipe diameters is detected, even though the light source emitted by the light ray emitting mechanism is preset through the rotary adjusting mechanism and does not accurately shine on the welding seam, due to the symmetrical arrangement of the light ray emitters, when the preset shining angle is reduced due to the pipe diameter to be detected, shining points of the two light sources of the light ray emitters are located on two sides of the plane of the welding seam shined through by the gamma source, and when the preset shining angle is increased due to the pipe diameter to be detected, the two light sources of the light ray emitters are crossed; no matter the pipe diameter compares grow or diminish with the pipe diameter of predetermineeing the angle of illumination, its intersect is located the plane of the welding seam of gamma source transillumination all the time, and the light source that all can guarantee the transmission shines to the welding bead on, and real-time image can be caught to the image sensor to implement the monitor picture and reach outside monitor, can stop the propelling movement of device, accomplish video transmission and positioning unit's location.
The linear infrared emitter described in this patent is a line type in which the irradiation surface of infrared rays is long, and is a technical concept different from a light source in which the irradiation surface is a point type light or a surface type light.
During the use, the staff observes the pipeline internal diameter that needs to detect a flaw earlier, then the staff starts electronic jar, electronic jar work drives the backup pad and outwards removes, the backup pad outwards removes and drives two-way motor and outwards removes, two-way motor outwards removes and drives and remove the wheel and outwards remove, and then can realize removing the wheel and remove from the frame, when removing the wheel and outwards removing suitable position, the staff stops electronic jar, then the staff starts two-way motor, two-way motor work drives and removes the wheel and rotate automatic movement in the pipeline, also can carry out its length of automatically regulated.
When moving pipeline department of bending, can realize that the universal joint bracing piece of rear end rotates round the universal joint ball, and then drive the universal joint ball and rotate, along with the crooked position in the pipeline is removed to right universal joint connecting pipe, and then lead to the universal joint connecting pipe to rotate, can stretch the spring simultaneously, and then drive left universal joint connecting pipe and rotate round the universal joint ball, this design can be crooked, the bending range has been enlarged, more be favorable to being suitable for different pipe diameters and the pipeline of angle of buckling.
The real-time image is captured by a camera sensor of the video transmission and positioning unit, the implementation monitoring picture is transmitted to an external monitor, when the gamma source moves to a proper position near the welding seam, the pushing of the device can be stopped, the light ray emitter irradiates at two sides of the welding seam, and the gamma source performs transillumination to complete the detection of the welding seam.
These technical solutions, including the improved technical solution and the further improved technical solution, can also be combined or combined with each other, thereby achieving better technical effects.
By adopting the technical scheme, the invention has the following beneficial effects:
the double-rotation type high-pressure pipeline welding seam flaw detection positioning device can realize the ray detection of the large thick-wall prefabricated pipeline and the welding joint of the installed pipeline, and has the advantages of uniform transillumination thickness, good sensitivity, small scattered ray influence and high defect detection rate compared with double-wall single-shadow transillumination; the central transillumination detection of the pipeline welding seam with large difficulty coefficient can be realized; the transillumination time is greatly shortened, and the operation efficiency is obviously improved; the arrangement of the fastening bolt is convenient for fixing the universal joint ball, the multi-section fixing arm can adapt to the pipeline flaw detection of different diameters, and the flexible hose improves the connection effect; the supporting and traveling mechanism is arranged, so that the device can automatically travel without being influenced by any station in the detection of the welding seam of the welding joint of the pipeline, the use effect is improved, the operation is convenient, and the test range is enlarged; the arrangement of the light ray emitting unit and the double light ray emitter can meet the transillumination of different pipe diameters, the angle of the light ray emitting unit does not need to be adjusted, and the transillumination accuracy is improved.
Drawings
Fig. 1 is an overall schematic view of the present patent.
Fig. 2 is a schematic view of the connection mechanism of this patent.
Fig. 3 is a schematic view of the supporting and traveling mechanism of the present patent.
Fig. 4 is a schematic view of the gamma source transillumination position of the present patent.
In the figure, 1-connecting mechanism, 2-supporting frame, 3-supporting running mechanism, 11-left universal joint supporting rod, 12-universal joint ball, 13-left universal joint connecting pipe, 14-right universal joint connecting pipe, 15-spring, 16-right universal joint supporting rod, 31-moving wheel, 32-frame, 33-electric cylinder, 34-two-way motor, 35-supporting plate, 41-source positioning pipe, 51-light emitter, 52-camera sensor and 6-gamma source.
The arrows indicate the light irradiation direction and the gamma source transillumination direction, a ' is the welding seam position of the pipeline a to be detected, b ' is the welding seam position of the pipeline b to be detected, c ' is the welding seam position of the pipeline c to be detected, and the pipe diameter a is more than b and less than c.
Detailed Description
The patent is further explained below with reference to the figures and examples. The scope of protection of the patent is not limited to the specific embodiments.
Example 1
As shown in figures 1-4, the double-rotation type high-pressure pipeline welding seam flaw detection positioning device comprises a connecting mechanism 1, a support frame 2, a support walking mechanism 3, a gamma source containing and conveying positioning unit and a video transmission and positioning unit;
the two ends of the connecting mechanism 1 are respectively provided with a support frame 2, and the outer end surface of each support frame 2 is evenly provided with three support travelling mechanisms 3; the connecting mechanism 1 comprises a left universal joint support rod 11, a right universal joint support rod 16, a universal joint ball 12, a left universal joint connecting pipe 13, a right universal joint connecting pipe 14 and a spring 15, wherein the left universal joint support rod 11 and the right universal joint support rod 16 are coaxially arranged, universal joint balls 12 are respectively arranged at two adjacent ends, and the universal joint balls 12 are respectively arranged inside the left universal joint connecting pipe 13 and the right universal joint connecting pipe 14; the left universal joint support rod 11, the left universal joint connecting pipe 13, the right universal joint connecting pipe 14 and the right universal joint support rod 16 are arranged in sequence; the spring 15 is arranged between the left universal joint connecting pipe 13 and the right universal joint connecting pipe 14 to connect the two; the axial centers of the left universal joint support rod 11, the universal joint ball 12, the left universal joint connecting pipe 13, the right universal joint connecting pipe 14, the right universal joint support rod 16 and the spring 15 are all arranged in a hollow mode, and a hollow channel of the connecting mechanism 1 is formed jointly.
The universal joint balls 12 are symmetrically arranged on two sides of the spring 15, fastening bolts are arranged on the left universal joint connecting pipe 13 and the right universal joint connecting pipe 14 and are respectively connected with the left universal joint connecting pipe 13 and the right universal joint connecting pipe 14 through threads, and the universal joint balls 12 are arranged at the lower ends of the fastening bolts.
The supporting frame 2 is respectively provided with the left end of a left universal joint supporting rod 11 and the right end of a right universal joint supporting rod 16, the outer ends of the left universal joint supporting rod 11 and the right universal joint supporting rod 16 are respectively provided with an external thread, the center of the supporting frame 2 is provided with an internal thread, and the left universal joint supporting rod 11 and the right universal joint supporting rod 16 are connected with the supporting frame 2 through the internal thread and the external thread; the center of the support frame 2 is arranged in a hollow way and is communicated with the hollow channel of the connecting mechanism 1; the upper end of the support frame 2 is provided with a flexible hose which is arranged at the upper sides of the left universal joint support rod 11 and the right universal joint support rod 16, and the flexible hose is connected with the support frame 2 through bolts; the gamma source accommodating and conveying positioning unit is arranged in a hollow channel between the connecting mechanism 1 and the support frame 2, and the video transmission and positioning unit is arranged at the front end of the gamma source accommodating and conveying positioning unit.
The supporting and traveling mechanism 3 comprises a moving wheel 31, a frame 32, an electric cylinder 33, a two-way motor 34 and a supporting plate 35, the inner end of the moving wheel 31 is connected with the two-way motor 34, the two-way motor 34 is arranged inside the supporting plate 35, the supporting plate 35 is arranged on the inner side of the moving wheel 31, the two-way motor 34 penetrates through the supporting plate 35 to be connected with the moving wheel 31, the electric cylinder 33 is arranged at the lower end of the supporting plate 35, the electric cylinder 33 is embedded on the bottom end face inside the frame 32, the frame 32 is installed on the outer end face of the supporting frame 2, and the moving; three multi-section fixing arms are evenly arranged at the outer end of each supporting frame 2, and the tail ends of the multi-section fixing arms are connected with a framework 32 supporting the travelling mechanism 3.
The gamma source containing and conveying positioning unit comprises a source conveying pipe, a source positioning pipe 41 and a steel strand, wherein the source conveying pipe is arranged in a hollow channel between the connecting mechanism 1 and the support frame 2, the source positioning pipe 41 is arranged at the top end of the hollow channel, the gamma source 6 is arranged at the front end of the steel strand, and the gamma source 6 is positioned in the source positioning pipe 41 by the steel strand through the source conveying pipe; the gamma source 6 passes through the support frame 2, the right universal joint support rod 16, the universal joint ball 12 at the center of the right universal joint connecting pipe 14, the spring 15, the universal joint ball 12 at the center of the left universal joint connecting pipe 13, the left universal joint support rod 11 and the support frame 2 arranged at one end of the left universal joint support rod 11 in sequence through the source transmission pipe, and is locked after reaching the source positioning pipe 41;
the video transmission and positioning unit comprises a light emitting unit and a camera shooting unit; the light emitting unit comprises a fixing mechanism, a rotation adjusting mechanism and a light emitter 51; the fixing mechanism is used for fixing the whole light emitting unit at the front end of the source positioning tube 41; the light emitter 51 is used for emitting linear light, and the light emitter 51 is symmetrically arranged at two sides of the gamma source 6 of the source head positioning tube 41; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the light emitter 51 and is used for adjusting the light emitting direction of the light emitting mechanism and controlling the light to irradiate at or near the welding seam;
the camera unit also comprises a fixing mechanism, a rotation adjusting mechanism, a camera sensor 52 and a display mechanism; the fixing mechanism is used for fixing the camera sensor 52 on the support frame 2; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the camera sensor 52 and is used for adjusting the visual angle of the camera sensor 52; the display means displays the output result of the image sensor 52.
The gamma source conveying pipe is designed in the center of the whole connecting mechanism 1, and has the functions that in operation, the gamma source conveying steel strand is connected with the device and the gamma source 6 is conveyed into a source positioning pipe 41 at the end part of the whole device through the source conveying pipe;
the video transmission and positioning unit can preset the angles of the light ray emitter 51 and the camera sensor 52 according to the pipe diameter; the two light emitters 51 are symmetrically arranged on two sides of a gamma source ray of the source positioning tube 41, the gamma source ray shines through to a welding seam, and the light emitters 51 are linear infrared emitters, so that when the welding seam with different pipe diameters is detected, even if a light source emitted by a light emitting mechanism is preset through a rotary adjusting mechanism and is not accurately projected onto the welding seam, due to the symmetrical arrangement of the light emitters 51, when a preset irradiation angle is reduced due to the pipe diameter to be detected, irradiation points of the two light sources of the light emitters 51 are located on two sides of a welding seam plane shined through by the gamma source 6, and when the preset irradiation angle is increased due to the pipe diameter to be detected, the two light sources of the light emitters 51 are crossed when the two light sources are not; no matter the pipe diameter is bigger or smaller than the pipe diameter of the preset irradiation angle, the intersection point is always positioned on the plane of the welding seam transilluminated by the gamma source 6, the emitted light source can be ensured to be projected onto the welding bead, the camera sensor 52 can capture real-time images, and monitoring pictures are transmitted to an external monitor, so that the pushing of the device can be stopped, and the positioning of the video transmission and positioning unit is completed.
During the use, the staff observes the pipeline internal diameter that needs the flaw detection earlier, then the staff starts electronic jar 33, electronic jar 33 work drives backup pad 35 and outwards removes, backup pad 35 outwards removes and drives two-way motor 34 and outwards removes, two-way motor 34 outwards removes and drives and remove wheel 31 and outwards remove, and then can realize removing wheel 31 and remove from frame 32, when removing wheel 31 and outwards removing suitable position, the staff stops electronic jar 33, then the staff starts two-way motor 34, two-way motor 34 work drives and removes wheel 31 and rotate at pipeline internal automatic movement, also can carry out its length of automatically regulated.
When moving pipeline department of bending, can realize that the universal joint bracing piece of rear end rotates round universal joint ball 12, and then drive universal joint ball 12 and rotate, along with the crooked position in the pipeline is removed to right universal joint connecting pipe 14, and then lead to the universal joint connecting pipe to rotate, can stretch spring 15 simultaneously, and then drive left universal joint connecting pipe 13 and rotate round universal joint ball 12, this design can be crooked, the bending range has been enlarged, more be favorable to being suitable for different pipe diameters and the pipeline of the angle of buckling.
The real-time image is captured by a camera sensor 52 of the video transmission and positioning unit, the monitoring picture is transmitted to an external monitor, when the gamma source 6 moves to a proper position near the welding seam, the pushing of the device can be stopped, the light ray emitter 51 irradiates at two sides of the welding seam, and the gamma source 6 performs transillumination to complete the detection of the welding seam.
Claims (6)
1. The utility model provides a bispin formula high-pressure line welding seam positioner that detects a flaw which characterized in that: the device comprises a connecting mechanism, a supporting frame, a supporting and traveling mechanism, a gamma source accommodating, conveying and positioning unit and a video transmission and positioning unit;
two ends of the connecting mechanism are respectively provided with a support frame, and the outer end surface of each support frame is provided with a support walking mechanism;
the connecting mechanism comprises a left universal joint supporting rod, a right universal joint supporting rod, a universal joint ball, a left universal joint connecting pipe, a right universal joint connecting pipe and a spring, the left universal joint supporting rod and the right universal joint supporting rod are coaxially arranged, universal joint balls are respectively arranged at two adjacent ends of the left universal joint supporting rod and the right universal joint supporting rod, and the universal joint balls are respectively arranged in the left universal joint connecting pipe and the right universal joint connecting pipe; the left universal joint support rod, the left universal joint connecting pipe, the right universal joint connecting pipe and the right universal joint support rod are arranged in sequence; the spring is arranged between the left universal joint connecting pipe and the right universal joint connecting pipe to connect the left universal joint connecting pipe and the right universal joint connecting pipe; the centers of the left universal joint support rod, the universal joint ball, the left universal joint connecting pipe, the right universal joint support rod and the spring axis are all arranged in a hollow mode, and a hollow channel of the connecting mechanism is formed together;
the support frame is respectively provided with a left end of a left universal joint support rod and a right end of a right universal joint support rod, and the center of the support frame is arranged in a hollow manner and is communicated with a hollow channel of the connecting mechanism; the gamma source accommodating, conveying and positioning unit is arranged in a hollow channel between the connecting mechanism and the support frame, and the video transmission and positioning unit is arranged at the front end of the gamma source accommodating, conveying and positioning unit;
the supporting and traveling mechanism comprises a moving wheel, a frame, an electric cylinder, a two-way motor and a supporting plate, wherein the inner end of the moving wheel is connected with the two-way motor, the two-way motor is arranged in the supporting plate, the supporting plate is arranged on the inner side of the moving wheel, the two-way motor penetrates through the supporting plate to be connected with the moving wheel, the electric cylinder is arranged at the lower end of the supporting plate and is embedded on the bottom end face in the frame, the frame is arranged on the outer end face of the supporting frame, and the moving wheel and the supporting plate are both arranged;
the gamma source containing and conveying positioning unit comprises a source conveying pipe, a source positioning pipe and a steel strand, wherein the source conveying pipe is arranged in a hollow channel between the connecting mechanism and the support frame, the source positioning pipe is arranged at the top end of the hollow channel, the gamma source is arranged at the front end of the steel strand, and the steel strand positions the gamma source in the source positioning pipe through the source conveying pipe; the gamma source sequentially passes through the support frame, the right universal joint support rod, the universal joint ball at the center of the right universal joint connecting pipe, the spring, the universal joint ball at the center of the left universal joint connecting pipe, the left universal joint support rod and the support frame arranged at one end of the left universal joint support rod through the source transmission pipe, and is locked after reaching the source positioning pipe;
the video transmission and positioning unit comprises a light emitting unit and a camera shooting unit; the light emitting unit comprises a fixing mechanism, a rotary adjusting mechanism and two light emitters; the fixing mechanism is used for fixing the whole light emitting unit at the front end of the source positioning tube; the two light ray emitters are symmetrically arranged on two sides of a gamma source of the source positioning tube, and the light ray irradiation angles are symmetrical relative to the gamma source; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the light ray emitter and used for adjusting the light ray emitting direction of the light ray emitting mechanism and controlling the light ray to irradiate at or near the welding seam;
the camera shooting unit also comprises a fixing mechanism, a rotation adjusting mechanism, a camera shooting sensor and a display mechanism; the fixing mechanism is used for fixing the camera sensor on the support frame; the rotary adjusting mechanism is respectively connected with the fixing mechanism and the camera sensor and used for adjusting the visual angle of the camera sensor; the display mechanism displays an output result of the image sensor.
2. The double-rotation type high-pressure pipeline welding seam flaw detection positioning device of claim 1, which is characterized in that: the support frame is equipped with two, it is equipped with six, six to support running gear structure the same, two the support frame outer end all evenly is equipped with three support running gear.
3. The double-rotation type high-pressure pipeline welding seam flaw detection positioning device of claim 1, which is characterized in that: the universal joint ball is symmetrically arranged on two sides of the spring, fastening bolts are arranged on the left universal joint connecting pipe and the right universal joint connecting pipe and are respectively connected with the left universal joint connecting pipe and the right universal joint connecting pipe through threads, and universal joint balls are arranged at the lower ends of the fastening bolts.
4. The double-rotation type high-pressure pipeline welding seam flaw detection positioning device of claim 1, which is characterized in that: three multi-section fixed arms are evenly installed at the outer end of the supporting frame, and the tail ends of the multi-section fixed arms are connected with a frame supporting the traveling mechanism.
5. The double-rotation type high-pressure pipeline welding seam flaw detection positioning device of claim 1, which is characterized in that: the upper end of the support frame is provided with a flexible hose which is arranged on the upper sides of the left universal joint support rod and the right universal joint support rod, and the flexible hose is connected with the support frame through bolts.
6. The double-rotation type high-pressure pipeline welding seam flaw detection positioning device of claim 1, which is characterized in that: the outer ends of the left universal joint support rod and the right universal joint support rod are respectively provided with an external thread, the center of the support frame is provided with an internal thread, and the left universal joint support rod and the right universal joint support rod are connected with the support frame through the internal thread and the external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956748.2A CN107703163B (en) | 2017-10-16 | 2017-10-16 | Bispin formula high-pressure line welding seam positioner that detects a flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956748.2A CN107703163B (en) | 2017-10-16 | 2017-10-16 | Bispin formula high-pressure line welding seam positioner that detects a flaw |
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| CN107703163A CN107703163A (en) | 2018-02-16 |
| CN107703163B true CN107703163B (en) | 2020-12-11 |
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| CN111085771A (en) * | 2019-12-30 | 2020-05-01 | 上海雁南汽车零部件有限公司 | Self-positioning rotary automatic laser welding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1924562A (en) * | 2006-10-13 | 2007-03-07 | 核动力运行研究所 | Main pipe welding seam ray detection and positioning device for nuclear power station steam generator |
| KR100997320B1 (en) * | 2008-09-24 | 2010-11-29 | 주식회사 디섹 | Radioisotope Centering Devices for Radiography of Pipe |
| CN202735267U (en) * | 2012-06-07 | 2013-02-13 | 中国石油天然气第一建设公司 | Pipeline center radiography device |
| CN102749340B (en) * | 2012-06-07 | 2014-08-06 | 中国石油天然气第一建设公司 | Adjustable pipe center transillumination device |
| CN103727351B (en) * | 2013-12-10 | 2016-01-27 | 大连大科科技咨询有限公司 | Pipeline crawl trolley |
| CN103672290B (en) * | 2013-12-11 | 2015-11-18 | 电子科技大学 | Entirely drive creeping type pipeline robot |
| CN105972381B (en) * | 2016-05-05 | 2018-05-25 | 湖北三江航天红阳机电有限公司 | A kind of pipeline inner rays flaw detection robot |
| CN206386618U (en) * | 2017-01-16 | 2017-08-08 | 南京裕扬工程检测有限责任公司 | A kind of γ crawling devices of pipeline film making |
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