阅读说明：本技术 环焊缝射线检测装置 (Circumferential weld ray detection device ) 是由 刘全利 皮亚东 薛岩 王雪 高静 吕新昱 周广言 牛连山 于晨松 于 2020-04-30 设计创作，主要内容包括：本公开提供了一种环焊缝射线检测装置,属于焊缝检测技术领域。环焊缝射线检测装置包括轨道、成像面板、扫查器、射线源、控制器,所述轨道呈环形,用于套在管道上,所述成像面板安装在所述扫查器上,所述扫查器可移动地设置在所述轨道上；所述射线源用于提供成像用的射线；所述控制器,用于与上位机建立连接以接收控制指令,所述控制器被配置为,根据所述控制指令控制所述扫查器沿所述轨道移动、向所述上位机发送所述成像面板上形成的图像。该环焊缝射线检测装置可以实时得到数字化的检测结果,以便于后续对检测结果进行复核查验。(The utility model provides a girth weld ray detection device belongs to welding seam and detects technical field. The girth weld ray detection device comprises a track, an imaging panel, a scanning device, a ray source and a controller, wherein the track is annular and is used for being sleeved on a pipeline, the imaging panel is arranged on the scanning device, and the scanning device is movably arranged on the track; the ray source is used for providing rays for imaging; the controller is used for establishing connection with an upper computer to receive a control instruction, and the controller is configured to control the scanner to move along the track and send an image formed on the imaging panel to the upper computer according to the control instruction. The girth weld ray detection device can obtain a digital detection result in real time so as to conveniently recheck and check the detection result subsequently.)

1. The girth weld ray detection device is characterized in that the girth weld ray detection device (100) comprises a track (1), an imaging panel (2), a scanner (3), a ray source (4) and a controller, wherein the track (1) is annular and is used for being sleeved on a pipeline, the imaging panel (2) is installed on the scanner (3), and the scanner (3) is movably arranged on the track (1);

the radiation source (4) is used for providing rays for imaging;

the controller is used for establishing connection with an upper computer to receive a control instruction, and the controller is configured to control the scanner (3) to move along the track (1) and send the image formed on the imaging panel (2) to the upper computer according to the control instruction.

2. The girth weld ray detection device according to claim 1, wherein the rail (1) comprises a circular arc-shaped body (1a), joints (1b) at two ends of the body (1a) and a plurality of elastic gaskets (1c), the joints (1b) at two ends of the body (1a) are connected through connecting bolts (12), and the elastic gaskets (1c) are located on the inner wall of the body (1 a).

3. The girth weld ray detection device according to claim 1, wherein the scanner (3) comprises a bottom plate (31), and an eccentric wheel mechanism (32), a first locking mechanism (33), a second locking mechanism (34) and a driving mechanism (35) which are respectively arranged on the bottom plate (31);

the eccentric mechanism (32) comprises four wheels arranged in a matrix on the base plate (31), the four wheels comprising a first eccentric (321), a second eccentric (322), a main driving wheel (323) and a driven wheel (324);

the first locking mechanism (33) is configured to adjust a distance between the first eccentric (321) and the main drive wheel (323) such that the first eccentric (321) and the main drive wheel (323) clamp the track (1);

the second locking mechanism (34) is configured to adjust the distance between the second eccentric (322) and the driven wheel (324) so that the second eccentric (322) and the driven wheel (324) clamp the track (1);

the driving mechanism (35) is configured to drive the main driving wheel (323) to rotate.

4. The girth weld ray detection device according to claim 3, wherein the first locking mechanism (33) and the second locking mechanism (34) are identical in structure;

the first locking mechanism (33) comprises a first rotating rod (331), a first connecting rod (332), a second connecting rod (333) and a first handle (331a), one end of the first rotating rod (331) is hinged to the bottom plate (31), the other end of the first rotating rod (331) is hinged to one end of the first connecting rod (332), the other end of the first connecting rod (332) is hinged to one end of the second connecting rod (333), the other end of the second connecting rod (333) is connected with a rotating shaft of the first eccentric wheel (321), and the first handle (331a) is connected to the first rotating rod (331).

5. The circumferential weld radiographic inspection device of claim 3, wherein the drive mechanism (35) comprises a servo motor, and an output shaft of the servo motor is in transmission connection with a rotating shaft of the main drive wheel (323).

6. The girth weld ray detection device according to claim 3, wherein the bottom plate (31) comprises a first bottom plate (311) and a second bottom plate (312), and one edge of the first bottom plate (311) is hinged with one edge of the second bottom plate (312); the first eccentric (321) and the main drive wheel (323) are arranged on the first base plate (311), and the second eccentric (322) and the driven wheel (324) are arranged on the second base plate (312).

7. The girth weld ray detection device of claim 6, wherein the scanner (3) further comprises a curvature adjustment plate (37), the curvature adjustment plate (37) is an isosceles triangle, three corners of the curvature adjustment plate (37) are respectively provided with a first through hole (37a), a second through hole (37b) and a third through hole (37c), a first pin shaft (371) is arranged in the first through hole (37a), a second pin shaft (372) is arranged in the second through hole (37b), and a third pin shaft (373) is arranged in the third through hole (37c), the first pin shaft (371) is hinged to the first base plate (311), the second pin shaft (372) is hinged to the second base plate (312), and the first base plate (311) and the second base plate (312) are hinged through the third pin shaft (373).

8. The girth weld ray detection device according to claim 3, wherein a panel bracket (38) is further arranged on the scanner (3), the panel bracket (38) is fixedly connected with the bottom plate (31), and the imaging panel (2) is detachably connected with the panel bracket (38).

9. The girth weld ray detection device according to claim 8, wherein the scanner (3) further comprises a height adjustment mechanism (39), the height adjusting mechanism (39) comprises a connecting arm (391), at least two connecting rods (392), two sleeves (393) and a lock nut (394), the connecting arm (391) is fixedly connected with the bottom plate (31), the two sleeves (393) are fixedly arranged on the connecting arm (391), one end of the connecting rod (392) is fixedly connected with the panel bracket (38), the other end of the connecting rod (392) passes through the sleeve (393), the two connecting rods (392) are perpendicular to the panel bracket (38), each sleeve (393) is provided with a threaded through hole, the locking nut (394) is disposed in the threaded through hole, and the other end of the connecting rod (392) is locked in the sleeve (393) by the locking nut (394).

10. The girth weld ray detection device according to claim 3, wherein the scanner (3) further comprises a speed reduction mechanism (30) disposed between the drive mechanism (35) and the main drive wheel (323).

Technical Field

The disclosure relates to the technical field of weld joint detection, in particular to a girth weld ray detection device

Background

A plurality of pipelines are usually connected through a welding technology in pipeline engineering, after the pipelines are welded, the girth welds of the pipelines need to be detected, and if the detection results of the girth welds are unqualified, the pipelines need to be re-welded to ensure the welding quality.

At present, the radiographic inspection of the circumferential weld of the pipeline usually adopts a film imaging mode. The radiation source is arranged in the pipeline, the film is arranged outside the pipeline, and the rays emitted by the radiation source can penetrate through the welding seam to form images on the film.

However, in the above-described film imaging system, the film needs to be developed in a dark room, and the detection result cannot be given in real time, resulting in low detection efficiency. And the detection result obtained by the film imaging mode is an image, the film with the image needs to be stored and stored so as to be convenient for subsequent recheck and check, but the film storage cost is high and the difficulty is high. Generally, after being stored for 4-6 years, the film is easy to age, and the original image can be discolored or faded, so that the negative film cannot be checked again.

Disclosure of Invention

The embodiment of the disclosure provides a girth weld ray detection device, which can obtain a digital detection result in real time, improve the detection efficiency and facilitate the follow-up rechecking and checking of the detection result. The technical scheme is as follows:

the embodiment of the disclosure provides a girth weld ray detection device, which comprises a track, an imaging panel, a scanning device, a ray source and a controller, wherein the track is annular and is used for being sleeved on a pipeline;

the ray source is used for providing rays for imaging;

the controller is used for establishing connection with an upper computer to receive a control instruction, and the controller is configured to control the scanner to move along the track and send an image formed on the imaging panel to the upper computer according to the control instruction.

Optionally, the rail includes a circular arc-shaped body, joints located at two ends of the body, and a plurality of elastic gaskets, the joints at two ends of the body are connected by connecting bolts, and the plurality of elastic gaskets are located on an inner wall of the body.

Optionally, the scanner comprises a base plate, and an eccentric wheel mechanism, a first locking mechanism, a second locking mechanism and a driving mechanism which are respectively arranged on the base plate;

the eccentric wheel mechanism comprises four wheels which are arranged on the bottom plate in a matrix manner, and the four wheels comprise a first eccentric wheel, a second eccentric wheel, a main driving wheel and a driven wheel;

the first locking mechanism is configured to adjust a distance between the first eccentric and the main drive wheel such that the first eccentric and the main drive wheel clamp the track;

the second locking mechanism is configured to adjust a distance between the second eccentric and the driven wheel such that the second eccentric and the driven wheel clamp the track;

the driving mechanism is configured to drive the main driving wheel to rotate.

Optionally, the first locking mechanism and the second locking mechanism are identical in structure;

first locking mechanism includes dwang, first connecting rod, second connecting rod and handle, the one end of dwang articulates on the bottom plate, the other end of dwang with the one end of first connecting rod is articulated, the other end of first connecting rod with the one end of second connecting rod is articulated, the other end of second connecting rod with the rotation axis connection of first eccentric wheel, the handle is connected on the dwang.

Optionally, the driving mechanism comprises a servo motor, and an output shaft of the servo motor is in transmission connection with a rotating shaft of the main driving wheel.

Optionally, the bottom plate comprises a first bottom plate and a second bottom plate, and one edge of the first bottom plate is hinged to one edge of the second bottom plate; the first eccentric and the main drive wheel are disposed on the first base plate, and the second eccentric and the driven wheel are disposed on the second base plate.

Optionally, the scanning device further comprises a curvature adjusting plate, the curvature adjusting plate is an isosceles triangle plate, three corners of the curvature adjusting plate are respectively provided with a first through hole, a second through hole and a third through hole, a first pin shaft is arranged in the first through hole, a second pin shaft is arranged in the second through hole, a third pin shaft is arranged in the third through hole, the first pin shaft is hinged to the first bottom plate, the second pin shaft is hinged to the second bottom plate, and the first bottom plate is hinged to the second bottom plate through the third pin shaft.

Optionally, a panel bracket is further arranged on the scanning device, the panel bracket is fixedly connected with the bottom plate, and the imaging panel is detachably connected with the panel bracket.

Optionally, the scanning device further comprises a height adjusting mechanism, the height adjusting mechanism comprises a connecting arm, two connecting rods, two sleeves and a locking nut, the connecting arm is fixedly connected with the bottom plate, the two sleeves are fixedly arranged on the connecting arm, one end of each connecting rod is fixedly connected with the panel support, the other end of each connecting rod penetrates through the corresponding sleeve, the two connecting rods are perpendicular to the panel support and are arranged on the corresponding sleeve, each connecting rod is provided with a threaded through hole, the locking nut is arranged in the corresponding threaded through hole, and the other end of each connecting rod is locked in the corresponding sleeve through the locking nut.

Optionally, the scanner further comprises a speed reduction mechanism disposed between the drive mechanism and the main drive wheel.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

through providing a girth joint ray detection device, the device replaces original film through adopting the formation of image panel, and when the ray that the source of radiation sent in the pipeline passed the welding seam and shoots formation image on the formation of image panel, can convert this image into data transmission to the host computer through the controller, is shown the image data that detects by the host computer. Meanwhile, a control instruction sent by an upper computer can be received through the controller, so that the controller can control the scanner to move along the rail according to the control instruction so as to drive the imaging panel to rotate around the girth weld for a circle, the dynamic continuous detection of the girth weld of the pipeline is realized, and the digital detection result of the weld detection can be obtained in real time. And the detection result can be stored by the upper computer so as to be convenient for rechecking and checking the detection result subsequently.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating a circumferential weld radiographic inspection device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a track mount provided by an embodiment of the present disclosure;

FIG. 3 is a front view of a scanner provided by embodiments of the present disclosure;

FIG. 4 is a schematic structural diagram of a base plate according to an embodiment of the present disclosure;

FIG. 5 is a view from the direction A of FIG. 3;

FIG. 6 is a view from the direction B of FIG. 3;

FIG. 7 is a top view of a portion of a scanner according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a curvature adjustment plate provided in an embodiment of the present disclosure;

FIG. 9 is a block diagram illustrating a curved bottom plate according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of a partial structure of a scanner provided in an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a height adjustment mechanism provided in an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic use view of a circumferential weld ray detection device provided in an embodiment of the present disclosure, and as shown in fig. 1, the circumferential weld ray detection device is used for detecting a circumferential weld of a pipeline.

The girth weld ray detection device 100 comprises a track 1, an imaging panel 2, a scanner 3, a ray source 4 and a controller.

The track 1 is annular and is used for being sleeved on the pipeline 200, the imaging panel 2 is arranged on the scanner 3, and the scanner 3 is movably arranged on the track 1.

The radiation source 4 is used to provide radiation for imaging.

The controller is used for establishing connection with the upper computer so as to receive a control instruction, and the controller is configured to control the scanner 3 to move along the track 1 and send images formed on the imaging panel 2 to the upper computer according to the control instruction.

The device replaces original film through adopting the formation of image panel, and when the ray that the radiation source sent in the pipeline passed the welding seam and penetrated formation image on the formation of image panel, can convert this image into data transmission to the host computer through the controller, is shown the image data that detects by the host computer. Meanwhile, a control instruction sent by an upper computer can be received through the controller, so that the controller can control the scanner to move along the rail according to the control instruction so as to drive the imaging panel to rotate around the girth weld for a circle, the dynamic continuous detection of the girth weld of the pipeline is realized, and the digital detection result of the weld detection can be obtained in real time. And the detection result can be stored by the upper computer so as to be convenient for rechecking and checking the detection result subsequently.

In the present embodiment, a dynamic DR (Digital Radiography) detection principle is adopted to detect the girth weld. The radiation source 4 emits X-rays, the imaging panel is a cadmium telluride flat panel detector, i.e., a cadmium telluride Semiconductor material is fixed on the glass substrate, and the X-ray signals are directly converted into electrical signals, which are then received and processed into digital signals by a CMOS (Complementary Metal Oxide Semiconductor) circuit.

It should be noted that, in this embodiment, the girth weld ray detection apparatus 100 may further include a transmission module, and the transmission module may include a first transmission module and a second transmission module. The first transmission module is installed in the scanning device, the second transmission module is installed in the upper computer, and the first transmission module and the second transmission module are both wireless communication units so as to facilitate data transmission.

For example, the first transmission module and the second transmission module may transmit data through a 3G/4G/5G network, wifi, bluetooth, or the like.

Fig. 2 is a schematic view of a rail installation provided by an embodiment of the present disclosure, as shown in fig. 2, the rail 1 includes a circular arc-shaped body 1a, joints 1b located at two ends of the body 1a, and a plurality of elastic gaskets 1c, the joints 1b at two ends of the body 1a are connected by a connecting bolt 12, and the plurality of elastic gaskets 1c are located on an inner wall of the body 1 a.

In this embodiment, the arc-shaped body 1a may be made of a steel strip having a certain strength. A plurality of elastic washers 1c may be fixed to the body 1a by bolts.

When the pipeline is used specifically, the arc-shaped body 1a can be arranged around the pipeline 200, so that the body 1a can be sleeved at a set position outside the pipeline 200. Then, the joints 1b at both ends of the body 1a are lockingly coupled by the coupling bolts 12, and the distances between the rail 1 and the pipeline 200 are measured from four measuring points, respectively. Wherein, the four measuring points are four measuring points which are sequentially spaced by 90 degrees along the circumferential direction of the track 1. Then, the connecting bolt 12 is tightened or loosened, and the distance between the two joints 1b is changed so that the distances between the rail 1 and the outer wall of the pipe 200 are all equal at the four measuring points, and the rail 1 can be closely fitted to the pipe 200 following the roundness of the pipe 200. At this point, the installation of the track 1 is completed and the scanner 3 is then installed on the track 1. When the scanner 3 rotates for one circle along the track 1, the distance from the imaging panel 2 to the outer wall of the pipeline 200 can be ensured to be consistent all the time, so that the accuracy of the final detection result is ensured.

In this embodiment, the elastic pad 1c has an arc structure with a convex middle part. A plurality of elastic gasket 1c are located between track 1 and pipeline 200, can make body 1a and pipeline 200 between have certain interval, are convenient for install scanner 3, simultaneously, can also make track 1 have certain elastic deformation, laminating pipeline 200 that can be better.

Exemplarily, in the present implementation, the girth weld ray detection apparatus 100 includes four elastic spacers 1c, and the four elastic spacers 1c are sequentially disposed at intervals of 90 ° in the circumferential direction of the rail 1.

It should be noted that, the tracks 1 with different sizes can be correspondingly arranged for pipelines with different pipe diameters, so as to be suitable for pipelines with various pipe diameters. For example, the girth weld ray detection device provided by the embodiment of the disclosure is suitable for the quality detection of the girth weld of the steel pipeline with the diameter of 200-1422 mm. The axial length of the rail 1 can be set to 125mm and the thickness to 30 mm.

Fig. 3 is a front view of a scanner provided in an embodiment of the present disclosure, and as shown in fig. 3, the scanner 3 includes a base plate 31, and an eccentric wheel mechanism 32, a first locking mechanism 33, a second locking mechanism 34 (see fig. 5), and a driving mechanism 35, which are respectively disposed on the base plate 31.

Fig. 4 is a schematic structural diagram of a bottom plate provided in the embodiment of the present disclosure, and as shown in fig. 4, four mounting holes 31a are arranged at four corners of the bottom plate 31 in a matrix.

Optionally, the bottom plate 31 is further provided with a plurality of threaded holes for mounting the eccentric mechanism 32, the first locking mechanism 33, the second locking mechanism 34 and the driving mechanism 35, which are fixed on the bottom plate 31, respectively.

Fig. 5 is a view taken along direction a of fig. 3, and as shown in fig. 5, the eccentric wheel mechanism 32 includes four wheels arranged in a matrix on the base plate 31. The four wheels include a first eccentric 321, a second eccentric 322, a main drive wheel 323, and a driven wheel 324. Wherein four wheels are respectively disposed in the four mounting holes 31 a.

The first locking mechanism 33 is configured to adjust a distance between the first eccentric 321 and the main driving wheel 323 such that the first eccentric 321 and the main driving wheel 323 clamp the rail 1.

The second locking mechanism 34 is configured to adjust the distance between the second eccentric 322 and the driven wheel 324 such that the second eccentric 322 and the driven wheel 324 clamp the track 1.

Note that, in the present embodiment, the four wheels are each provided with a groove 32a (see fig. 3) in the circumferential direction for mounting the rail 1. When clamping the rail, the rail 1 is located in the grooves 32a of the four wheels.

The drive mechanism 35 is configured to drive the main drive wheel 323 to rotate.

In particular use, the first locking mechanism 33 and the second locking mechanism 34 can be controlled to enable the first eccentric 321 and the main driving wheel 323 and the second eccentric 322 and the driven wheel 324 to clamp the rail 1 respectively. And then the driving mechanism is controlled to drive the main driving wheel 323 to rotate, so as to drive the first eccentric wheel 321, the second eccentric wheel 322 and the driven wheel 324 to move along the circumferential direction of the track 1, and the scanner 3 rotates around the track 1 for one circle.

Alternatively, the driving mechanism 35 is a servo motor, and an output shaft of the servo motor is in transmission connection with a rotating shaft of the main driving wheel 323. The driving mechanism 35 is connected to a controller, and the controller is configured to control the servo motor to drive the main driving wheel 323 to rotate according to a control command. The rotating speed of the main driving wheel 323 can be controlled by inputting different control instructions, so that the rotating speed of the scanner 3 rotating along the track 1 is controlled, the scanner 3 can be ensured to circumferentially walk along the track 1, and the dynamic detection task is completed.

Fig. 6 is a view from the B direction of fig. 3, and as shown in fig. 6, in the present embodiment, the scanner 3 further includes a power supply 36 provided on the base plate 31. The power supply is used for supplying power to all electrical appliances in the scanner 3. For example, a servo motor may be powered to drive the main drive wheel 323 in rotation.

Optionally, as shown in fig. 6, the scanner 3 further includes a speed reduction mechanism 30 disposed between the drive mechanism 35 and the main drive wheel 323.

Alternatively, the reduction mechanism 30 includes a planetary reduction gear and a worm gear reduction gear (not shown in the drawings). The planetary reducer is in transmission connection with an output shaft of the servo motor, the worm gear reducer is in transmission connection with the planetary reducer, and an output shaft of the worm gear reducer is in transmission connection with a rotating shaft of the main driving wheel 323.

Illustratively, the reduction ratio of the reduction mechanism 30 may be set to 322: 1.

In this embodiment, the driving mechanism 35 may be controlled to rotate according to a control signal sent by the upper computer, for example, the power of the driving mechanism 35 is controlled to be 90W. The driving mechanism 35 is connected with the speed reducing mechanism 30, the moment of the speed reducing mechanism 30 is large at the moment, the scanning device 3 can be guaranteed to stably walk, the dynamic detection image quality is good, and the driving mechanism 35 rotates at a high speed and drives the main driving wheel 323 to rotate after passing through the driving mechanism 35, so that the scanning device 3 walks on the track 1.

Fig. 7 is a partial structural plan view of a scanner provided in an embodiment of the present disclosure, and as shown in fig. 7, in this embodiment, the first locking mechanism 33 and the second locking mechanism 34 have the same structure.

The first locking mechanism 33 includes a first rotating lever 331, a first link 332, a second link 333, and a first handle 331 a. One end of the first rotating rod 331 is hinged to the base plate 31, the other end of the first rotating rod 331 is hinged to one end of the first connecting rod 332, the other end of the first connecting rod 332 is hinged to one end of the second connecting rod 333, the other end of the second connecting rod 333 is connected to a rotating shaft of the first eccentric wheel 321, and the first handle 331a is connected to the first rotating rod 331.

In one implementation of the present embodiment, as shown in fig. 7, the first connecting rod 332 and the second connecting rod 333 are pulled by rotating the first handle 331a of the first locking mechanism 33 clockwise, so that the first eccentric 321 rotates clockwise, and the distance between the first eccentric 321 and the main driving wheel 323 becomes smaller, so that the first eccentric 321 and the main driving wheel 323 clamp the track 1.

By rotating the first handle 331a of the first locking mechanism 33 counterclockwise, the first connecting rod 332 and the second connecting rod 333 are pulled, so that the first eccentric 321 rotates counterclockwise, and the distance between the first eccentric 321 and the main driving wheel 323 is increased, and the track is disengaged from the first eccentric 321 or the groove of the main driving wheel 323.

Likewise, the second locking mechanism 34 includes a second rotating lever 341, a third link 342, a fourth link 343, and a second handle 341 a. One end of the second rotating rod 341 is hinged to the bottom plate 31, the other end of the second rotating rod 341 is hinged to one end of the third connecting rod 342, the other end of the third connecting rod 342 is hinged to one end of the fourth connecting rod 343, the other end of the fourth connecting rod 343 is connected to the rotating shaft of the second eccentric wheel 322, and the second handle 341a is connected to the second rotating rod 341.

In one implementation of the present embodiment, the third connecting rod 342 and the fourth connecting rod 343 are pulled by rotating the second handle 341a of the second locking mechanism 34 counterclockwise, so that the second eccentric 322 rotates counterclockwise, the distance between the second eccentric 322 and the driven wheel 324 is reduced, and the second eccentric 322 and the driven wheel 324 clamp the track 1.

By rotating the second handle 341a of the second locking mechanism 34 clockwise, the second connecting rod 342 and the fourth connecting rod 343 can be pulled, so that the second eccentric 322 rotates clockwise, the distance between the second eccentric 322 and the driven wheel 324 increases, and the track 1 is disengaged from the grooves of the second eccentric 322 and the driven wheel 324.

The first locking mechanism 33 and the second locking mechanism 34 are arranged to facilitate the installation and the disassembly of the scanner and the rail.

Alternatively, referring to fig. 4, the base plate 31 includes a first base plate 311 and a second base plate 312, and one side of the first base plate 311 is hinged to one side of the second base plate 312. A first eccentric 321 and a main driving wheel 323 are provided on the first base plate 311, and a second eccentric 322 and a driven wheel 324 are provided on the second base plate 312. By providing the bottom plate 31 in the form of two bottom plate hinges, so as to bend the bottom plate 31 according to the shape of the duct 200, the bottom plate 31 is arranged to conform to the outer wall of the duct 200.

Fig. 8 is a schematic structural diagram of a curvature adjustment plate according to an embodiment of the present disclosure, and as shown in fig. 8, the scanner 3 further includes a curvature adjustment plate 37, and the curvature adjustment plate 37 is an isosceles triangular plate. Three corners of the curvature adjustment plate are respectively provided with a first through hole 37a, a second through hole 37b and a third through hole 37 c.

Referring to fig. 4, a first pin 371 is disposed in the first through hole 37a, a second pin 372 is disposed in the second through hole 37b, and a third pin 373 is disposed in the third through hole 37 c. The first pin 371 is hinged to the first base plate 311, the second pin 372 is hinged to the second base plate 312, and the first base plate 311 is hinged to the second base plate 312 through a third pin 373.

In specific use, the curvature adjusting plate 37 can adjust the first bottom plate 311 and the second bottom plate 312 to match the curvature of the outer wall of the pipeline 200.

Fig. 9 is a curved structure diagram of a bottom plate provided in the embodiment of the present disclosure, as shown in fig. 9, when the first bottom plate 311 and the second bottom plate 312 are disposed at an angle.

Optionally, as shown in fig. 3, a panel bracket 38 is further disposed on the scanner 3, the panel bracket 38 is fixedly connected to the bottom plate 31, and the imaging panel 2 is detachably connected to the panel bracket 38.

Fig. 10 is a schematic view of a partial structure of a scanner provided in an embodiment of the present disclosure, and as shown in fig. 10, the panel bracket 38 has a rectangular frame structure.

Illustratively, the imaging panel 2 and the panel bracket 38 are detachably and fixedly connected by bolts.

Optionally, the scanner 3 further includes a height adjusting mechanism 39, the height adjusting mechanism 39 includes a connecting arm 391, two connecting rods 392, two sleeves 393 and a lock nut 394, the connecting arm 391 is fixedly connected with the bottom plate 31, the two sleeves 393 are fixedly arranged on the connecting arm 391, one end of the connecting rod 392 is fixedly connected with the panel bracket 38, the other end of the connecting rod 392 is arranged through the sleeves 393, and the two connecting rods 392 are arranged perpendicular to the panel bracket 38.

In other implementations of the present embodiment, the links 392 and the sleeves 393 in the height adjustment mechanism 39 can also be provided in other numbers, for example, can be provided to include 4 or 8 links 392, and 4 or 8 sleeves 393, etc., for example.

Fig. 11 is a schematic view of a height adjusting mechanism according to an embodiment of the present disclosure, and as shown in fig. 11, each sleeve 393 is provided with a threaded through hole, a lock nut 394 is disposed in the threaded through hole, and the other end of the connecting rod 392 is locked in the sleeve 393 by the lock nut 394.

In the present embodiment, the distance between the imaging panel 2 and the outer surface of the duct 200 can be maintained at 10 to 30mm by the height adjusting mechanism 39.

Illustratively, the imaging panel 2 is maintained at a distance of 20mm from the outer surface of the conduit 200 by the height adjustment mechanism 32.

In this embodiment, the controller may be fixedly disposed on the driven wheel 324.

The controller may be a DSP (Digital Signal processing) controller. The controller may be used to convert the acquired images into data. And the controller can be further used for sending a trigger signal to enable the imaging panel to acquire an image formed on the imaging panel by the ray source. The trigger signal may be a TTL (transistor-transistor logic) level signal.

The following briefly describes, with reference to fig. 1, a method for using a girth weld ray detection apparatus provided by an embodiment of the present disclosure:

1. the rail 1 is mounted on the pipeline 200.

2. Placing the radiation source 4 in the pipeline 200 to ensure that the radiation emitted by the radiation source 4 can pass through the pipeline 200;

3. the imaging panel 2 is mounted and fixed on the panel bracket 38.

4. The scanner 3 is placed over the track 1 and the first locking mechanism 33 and the second locking mechanism 34 are locked so that the track 1 is located in the groove of the first eccentric 321 and the main drive wheel 323 and the first eccentric 321 and the main drive wheel 323 clamp the track 1, so that the track 1 is located in the groove of the second eccentric 322 and the driven wheel 324 and the second eccentric 322 and the driven wheel 324 clamp the track 1.

5. And receiving a control instruction sent by the upper computer, enabling the controller to control the driving mechanism 35 according to the control instruction, driving the main driving wheel 323 to rotate, and driving the first eccentric wheel 321, the second eccentric wheel 322 and the driven wheel 324 to move along the circumferential direction of the track 1.

6. The controller controls the imaging panel 2 to collect the image formed by the radiation source 4 on the imaging panel 2, and converts the image into data to be sent to the transmission module.

7. The controller transmits the data to the upper computer, so that the upper computer stores and displays the data.

The circumferential weld ray detection device provided by the embodiment of the disclosure adopts the most advanced digital imaging technology at present, is better than the conventional film imaging mode in the aspects of detection information quantity, image gray scale, remote transmission, convenience, practicality and the like, and can meet the technical requirements of conventional detection.

The construction field industrial application test proves that the circumferential weld ray detection device provided by the embodiment of the disclosure can meet the requirements of related detection standards, and has the advantages of accurate detection defects and safe and reliable detection process when being applied to pipeline circumferential weld detection.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.