X-ray nondestructive testing device for circumferential weld of elbow cylinder part

Abstract

According to the X-ray nondestructive testing device for the circumferential weld of the elbow cylinder part, supporting frames are uniformly distributed on a base, supporting wheels are arranged at the top ends of the supporting frames, and the elbow cylinder part is placed on the supporting wheels with the short end facing upwards; a positioning frame is arranged on the base, and a positioning puller bolt is arranged at the top of the positioning frame; two sets of posture-adjusting fastening belts are arranged below the elbow cylinder part in a crossed manner, one end of each posture-adjusting fastening belt is hooked with a part cylinder opening, and the other end of each posture-adjusting fastening belt is hooked with a base; a positioning fastening belt is arranged above the elbow cylinder part, and the two ends of the positioning fastening belt are hooked on the base; the portable X-ray transmitter is located in front of the base and installed on the three-axis movement mechanism through the adapter frame. A film is adhered to the circumferential outer surface of the circumferential welding seam; a lead sleeve is fixed outside the film. According to the invention, an X-ray nondestructive testing mode is introduced into the circumferential weld defect detection of the elbow cylinder part, and compared with a traditional manual ultrasonic flaw detection mode, the labor intensity can be effectively reduced, and the working efficiency can be further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of nondestructive testing, and in particular relates to an X-ray nondestructive testing device for circumferential welds of elbow cylinder parts. Background Art

[0002] For elbow cylindrical parts manufactured by welding, there are multiple circumferential welds evenly distributed along the bend direction on the parts. In order to verify the welding quality of the parts, all circumferential welds on the parts need to be inspected for defects. At present, the circumferential welds of elbow cylindrical parts are usually inspected by manual ultrasonic flaw detection, but manual ultrasonic flaw detection has the problems of high labor intensity and low work efficiency. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides an X-ray nondestructive testing device for the circumferential welds of elbow cylindrical parts, which introduces the X-ray nondestructive testing method into the circumferential weld defect detection of elbow cylindrical parts. Compared with the traditional manual ultrasonic flaw detection method, it can effectively reduce labor intensity and further improve work efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an X-ray nondestructive testing device for the circumferential weld of an elbow cylindrical part, comprising a base, a support frame, a support wheel, a positioning frame, a positioning and tightening bolt, a posture adjustment fastening belt, a positioning and tightening belt, a portable X-ray transmitter, an adapter frame, a three-axis motion mechanism, a film and a lead sleeve; four support frames are evenly arranged on the base, a support wheel is arranged at the top of each support frame, and the elbow cylindrical part is placed above the four support frames through the four support wheels, and the short end of the elbow cylindrical part faces upward; two positioning frames are arranged on the base, and the two positioning frames are symmetrically distributed on the left and right sides of the elbow cylindrical part, and two positioning frames are arranged side by side on the top of each positioning frame. The tightening bolt and the positioning tightening bolt are directly opposite to the outer surface of the elbow cylindrical part; the number of the posture adjustment fastening belts is two, the two are cross-distributed and located below the elbow cylindrical part, one end of the posture adjustment fastening belt is connected to the barrel of the elbow cylindrical part through a hook, and the other end of the posture adjustment fastening belt is connected to the base through a hook; the number of the positioning fastening belts is three, the three positioning fastening belts are located above the elbow cylindrical part, and both ends of the positioning fastening belts are connected to the base through hooks; the portable X-ray transmitter is located in front of the base, the portable X-ray transmitter is installed on the adapter frame, and the adapter frame is installed on the three-axis motion mechanism; the film is pasted on the circumferential outer surface of the circumferential weld, and the lead sleeve is fixedly mounted on the outside of the film.

[0005] Four universal casters are evenly arranged at the four corners below the base.

[0006] Four supporting bolts are evenly arranged at the four corners of the base.

[0007] A detachable armrest is arranged behind the base.

[0008] The portable X-ray transmitter and the adapter frame are hinged, and an electric drive joint is arranged at the hinge.

[0009] Three laser rangefinders are evenly arranged on the portable X-ray transmitter along the circumferential direction, and the three laser rangefinders and the X-ray emission port of the portable X-ray transmitter are in the same cross section.

[0010] Beneficial effects of the present invention:

[0011] The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts of the present invention introduces the X-ray nondestructive testing method into the circumferential weld defect detection of elbow cylindrical parts. Compared with the traditional manual ultrasonic flaw detection method, it can effectively reduce labor intensity and further improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts of the present invention (viewing angle 1);

[0013] Figure 2 It is a structural schematic diagram of an X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts of the present invention (viewing angle 2);

[0014] Figure 3 It is a schematic cross-sectional structure diagram (viewing angle 3) of an X-ray nondestructive testing device for circumferential welds of cylindrical elbow parts of the present invention (the portable X-ray transmitter is not shown);

[0015] In the figure, 1 is a base, 2 is a support frame, 3 is a support wheel, 4 is a positioning frame, 5 is a positioning and tightening bolt, 6 is a posture adjustment fastening belt, 7 is a positioning and tightening belt, 8 is a portable X-ray transmitter, 9 is an adapter frame, 10 is an elbow cylindrical part, 11 is a circular weld, 12 is a universal caster, 13 is a support foot bolt, 14 is a detachable armrest, 15 is an electric drive joint, and 16 is a laser rangefinder. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] like Figures 1 to 3As shown, an X-ray nondestructive testing device for the circumferential weld of an elbow cylindrical part comprises a base 1, a support frame 2, a support wheel 3, a positioning frame 4, a positioning and tightening bolt 5, a posture adjustment fastening belt 6, a positioning and tightening belt 7, a portable X-ray transmitter 8, an adapter frame 9, a three-axis motion mechanism, a film and a lead sleeve; the base 1 is evenly provided with four support frames 2, and the top of each support frame 2 is provided with a support wheel 3, and the elbow cylindrical part 10 is placed above the four support frames 2 through the four support wheels 3, and the short end of the elbow cylindrical part 10 faces upward; two positioning frames 4 are provided on the base 1, and the two positioning frames 4 are symmetrically distributed on the left and right sides of the elbow cylindrical part 10, and each positioning frame 4 has two positioning and tightening bolts 5 arranged in parallel on the top, and the positioning and tightening bolts 5 are arranged on the top of the positioning frame 4. The tightening bolt 5 is directly opposite to the outer surface of the elbow cylindrical part 10; the number of the posture adjustment fastening belts 6 is two, the two are cross-distributed and located below the elbow cylindrical part 10, one end of the posture adjustment fastening belt 6 is connected to the tube mouth of the elbow cylindrical part 10 through a hook, and the other end of the posture adjustment fastening belt 6 is connected to the base 1 through a hook; the number of the positioning fastening belts 7 is three, the three positioning fastening belts 7 are located above the elbow cylindrical part 10, and both ends of the positioning fastening belts 7 are connected to the base 1 through hooks; the portable X-ray transmitter 8 is located in front of the base 1, the portable X-ray transmitter 8 is installed on the adapter frame 9, and the adapter frame 9 is installed on the three-axis motion mechanism; the film is pasted on the circumferential outer surface of the circumferential weld 11, and the lead sleeve is fixedly mounted on the outside of the film.

[0018] Four universal casters 12 are evenly arranged at the four corners below the base 1 .

[0019] Four support bolts 13 are evenly distributed at the four corners of the base 1 .

[0020] A detachable armrest 14 is provided at the rear of the base 1 .

[0021] The portable X-ray transmitter 8 and the adapter frame 9 are hinged, and an electric drive joint 15 is provided at the hinge.

[0022] Three laser rangefinders 16 are evenly distributed along the circumferential direction on the portable X-ray transmitter 8 , and the three laser rangefinders 16 and the X-ray emission port of the portable X-ray transmitter 8 are in the same cross section.

[0023] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0024] First, the elbow cylindrical part 10 is hoisted to the top of the four supporting frames 2. The elbow cylindrical part 10 and the supporting frames 2 are completely supported by four supporting wheels 3, so that the short end of the elbow cylindrical part 10 faces upward.

[0025] After the elbow cylindrical part 10 is hoisted, the four support bolts 13 are first tightened so that the four support bolts 13 are pressed downward on the ground, thereby achieving fixation between the base 1 and the ground.

[0026] After the base 1 is fixed to the ground, two posture-adjusting fastening belts 6 are installed first, with one end of the first posture-adjusting fastening belt 6 hooked on the rear end of the base 1, and the other end of the first posture-adjusting fastening belt 6 hooked on the lower edge of the front tube mouth of the elbow cylindrical part 10, and the tensioner of the first posture-adjusting fastening belt 6 is located at the front end of the base 1. Then, the second posture-adjusting fastening belt 6 is installed, with one end of the second posture-adjusting fastening belt 6 hooked on the front end of the base 1, and the other end of the second posture-adjusting fastening belt 6 hooked on the lower edge of the rear tube mouth of the elbow cylindrical part 10, and the tensioner of the second posture-adjusting fastening belt 6 is located at the rear end of the base 1. At this time, the two posture-adjusting fastening belts 6 are not tightened first.

[0027] When the two posture adjustment fastening belts 6 are installed, three positioning fastening belts 7 are installed, wherein the first positioning fastening belt 7 is located in the middle, and the hooks at both ends of the first positioning fastening belt 7 respectively hook the left and right ends of the base 1, and then the second positioning fastening belt 7 and the third positioning fastening belt 7 are installed, and the second positioning fastening belt 7 and the third positioning fastening belt 7 are symmetrically arranged on both sides of the first positioning fastening belt 7, wherein the second positioning fastening belt 7 is located behind the first positioning fastening belt 7 and slightly inclined backward, and the third positioning fastening belt 7 is located in front of the first positioning fastening belt 7 and slightly inclined forward, and the hooks at both ends of the second positioning fastening belt 7 and the third positioning fastening belt 7 also respectively hook the left and right ends of the base 1, and the three positioning fastening belts 7 are not tightened at this time.

[0028] When the three positioning fastening belts 7 are installed, first operate the tensioner of the second posture adjusting fastening belt 6 behind the base 1 to gradually tighten the second posture adjusting fastening belt 6. After the second posture adjusting fastening belt 6 is tightened, continue to tighten the second posture adjusting fastening belt 6 backwards, and then pull the elbow cylindrical part 10. At this time, the elbow cylindrical part 10 is also moved on the supporting wheel 3 until the plane where the edge of the barrel mouth in front of the elbow cylindrical part 10 is located is approximately 45 degrees to the vertical plane, so as to facilitate the subsequent non-destructive testing of all circumferential welds 11 on the front half of the barrel of the elbow cylindrical part 10.

[0029] After the posture of the elbow cylindrical part 10 is adjusted, the tensioner of the first posture adjustment fastening belt 6 is controlled in front of the base 1 to tighten the first posture adjustment fastening belt 6. At this time, the front and rear directions of the elbow cylindrical part 10 are fixed by the posture adjustment fastening belt 6. Then, the tightening operations of the first positioning fastening belt 7, the third positioning fastening belt 7 and the second positioning fastening belt 7 are completed in sequence. At this time, the upper and lower directions of the elbow cylindrical part 10 are compressed and fixed by the positioning fastening belt 7. Finally, the four positioning and tightening bolts 5 are tightened, and the positioning and tightening bolts 5 complete the compression and fixation of the elbow cylindrical part 10 in the left and rear directions.

[0030] When the elbow cylindrical part 10 is completely fixed, the four support bolts 13 are loosened to make the four support bolts 13 upwardly separated from the ground, thereby releasing the fixation between the base 1 and the ground, and then the detachable armrest 14 is pushed to move the base 1 with the elbow cylindrical part 10 fixed to the location of the portable X-ray transmitter 8. The portable X-ray transmitter 8 has been installed on the three-axis motion mechanism through the adapter frame 9 in advance.

[0031] When the front opening of the elbow cylindrical part 10 enters the moving range of the portable X-ray transmitter 8, it stops moving, and then the four support bolts 13 are re-tightened so that the four support bolts 13 are pressed downward on the ground, thereby re-fixing the base 1 to the ground.

[0032] A circumferential weld 11 to be inspected is selected, and a film is first pasted on the circumferential outer surface of the circumferential weld 11, and then a lead sleeve is fixedly mounted on the outer side of the film.

[0033] After the film and the lead sleeve are installed, the portable X-ray transmitter 8 is first moved to the front tube mouth of the elbow cylindrical part 10 through the three-axis motion mechanism, so that the X-ray emission port of the portable X-ray transmitter 8 is roughly located in the plane where the circumferential weld 11 is located, and then the three laser rangefinders 16 are started. The laser beams emitted by the three laser rangefinders 16 will form three light spots on the inner surface of the circumference of the elbow cylindrical part 10. Then, the spatial position of the portable X-ray transmitter 8 is accurately adjusted through the three-axis motion mechanism and the electric drive joint 15. The function of the electric drive joint 15 is to accurately adjust the pitch angle of the portable X-ray transmitter 8 until the three light spots are all located on the circumferential weld 11, and at the same time ensure that the measurement data of the three laser rangefinders 16 are completely equal. At this time, it means that the center of the portable X-ray transmitter 8 coincides with the center of the plane where the circumferential weld 11 is located.

[0034] When the portable X-ray transmitter 8 completes the precise adjustment of the position, the portable X-ray transmitter 8 can be started, and the X-rays emitted by the X-ray emission port will accurately irradiate the circumferential weld 11. Then the X-ray emission port is controlled to rotate so that the X-rays continuously scan the circumferential weld 11 along the circumferential direction until the circumferential weld 11 is completely scanned by the X-rays. Then the portable X-ray transmitter 8 is turned off. At this time, the film completes the X-ray imaging of the circumferential weld 11, and the non-destructive testing of the first circumferential weld 11 is completed.

[0035] With reference to the nondestructive testing process of the first circumferential weld 11 , the nondestructive testing of all remaining circumferential welds 11 on the front half of the cylinder of the elbow cylindrical part 10 is completed.

[0036] After the nondestructive testing of all the circumferential welds 11 on the front half of the elbow cylindrical part 10 is completed, first withdraw the portable X-ray transmitter 8 from the front tube mouth of the elbow cylindrical part 10, then loosen the four support bolts 13, so that the four support bolts 13 are upwardly separated from the ground, thereby releasing the fixation between the base 1 and the ground, and then push the detachable handrail 14 to rotate the base 1 180 degrees on the spot, so that the rear half of the elbow cylindrical part 10 moves to the front.

[0037] When the rear half of the cylinder of the elbow cylindrical part 10 moves to the front, the tensioner of the second posture adjusting fastening belt 6 moves to the front of the base 1, and the tensioner of the first posture adjusting fastening belt 6 moves to the rear of the base 1. First, loosen the positioning tightening bolt 5, then loosen the three positioning fastening belts 7, and then gradually loosen the tensioner of the second posture adjusting fastening belt 6 located in front of the base 1. At the same time, continue to operate the tensioner of the first posture adjusting fastening belt 6 behind the base 1, and then pull the elbow cylindrical part 10 backward through the first posture adjusting fastening belt 6 until the plane where the edge of the original rear barrel mouth of the elbow cylindrical part 10 that has not been tested is located is approximately 45 degrees to the vertical plane, so as to facilitate the subsequent non-destructive testing of all circumferential welds 11 on the original rear half of the cylinder of the elbow cylindrical part 10.

[0038] After the elbow cylindrical part 10 is readjusted, the tensioner of the second posture adjustment fastening belt 6 is operated in front of the base 1 to tighten the second posture adjustment fastening belt 6. At this time, the front and rear directions of the elbow cylindrical part 10 are fixed again by the posture adjustment fastening belt 6. Then, the tightening operation of the three positioning fastening belts 7 is completed again in sequence to complete the compression and fixation of the elbow cylindrical part 10 in the up and down directions, and finally the four positioning and tightening bolts 5 are re-tightened to complete the compression and fixation of the elbow cylindrical part 10 in the left and rear directions.

[0039] After the elbow cylindrical part 10 is changed in direction and fully fixed again, the detachable handrail 14 is first removed from the base 1 to remove the detachable handrail 14 from blocking the portable X-ray transmitter 8, and then the four foot bolts 13 are re-tightened so that the four foot bolts 13 are pressed downward on the ground, thereby re-fixing the base 1 to the ground. Subsequently, the portable X-ray transmitter 8 is moved back to the original rear tube mouth of the elbow cylindrical part 10, and the non-destructive testing process of the circumferential weld 11 on the front half of the cylinder of the elbow cylindrical part 10 is referred to, and the non-destructive testing of all the circumferential welds 11 on the rear half of the cylinder of the elbow cylindrical part 10 can be completed.

[0040] The solutions in the embodiments are not intended to limit the protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the protection scope of the present invention.

Claims

1. An X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts, characterized by: It includes a base, a support frame, a support wheel, a positioning frame, a positioning and tightening bolt, a posture adjustment fastening belt, a positioning and tightening belt, a portable X-ray transmitter, an adapter frame, a three-axis motion mechanism, a film and a lead sleeve; four support frames are evenly arranged on the base, a support wheel is arranged on the top of each support frame, and the elbow cylindrical parts are placed above the four support frames through the four support wheels, and the short ends of the elbow cylindrical parts are facing upwards; two positioning frames are arranged on the base, and the two positioning frames are symmetrically distributed on the left and right sides of the elbow cylindrical parts, and two positioning and tightening bolts are arranged in parallel on the top of each positioning frame, and the positioning and tightening bolts are connected to the surface of the elbow cylindrical parts The two surfaces are facing each other; there are two posture-adjusting fastening belts, which are cross-distributed and located below the elbow cylindrical parts; one end of the posture-adjusting fastening belt is connected to the tube mouth of the elbow cylindrical parts through a hook, and the other end of the posture-adjusting fastening belt is connected to the base through a hook; there are three positioning fastening belts, which are located above the elbow cylindrical parts, and both ends of the positioning fastening belts are connected to the base through hooks; the portable X-ray transmitter is located in front of the base, the portable X-ray transmitter is installed on an adapter frame, and the adapter frame is installed on a three-axis motion mechanism; the film is pasted on the circumferential outer surface of the circumferential weld, and the lead sleeve is fixedly mounted on the outside of the film.

2. The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts according to claim 1 is characterized in that: Four universal casters are evenly arranged at the four corners below the base.

3. The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts according to claim 1 is characterized in that: Four supporting bolts are evenly arranged at the four corners of the base.

4. The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts according to claim 1 is characterized in that: A detachable armrest is arranged behind the base.

5. The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts according to claim 1 is characterized in that: The portable X-ray transmitter and the adapter frame are hinged, and an electric drive joint is arranged at the hinge.

6. The X-ray nondestructive testing device for circumferential welds of elbow cylindrical parts according to claim 1, characterized in that: Three laser rangefinders are evenly arranged on the portable X-ray transmitter along the circumferential direction, and the three laser rangefinders and the X-ray emission port of the portable X-ray transmitter are in the same cross section.

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