CN112525928B - Welding seam ray detection film hidden bag fixing device - Google Patents
Welding seam ray detection film hidden bag fixing device Download PDFInfo
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- CN112525928B CN112525928B CN202011117548.6A CN202011117548A CN112525928B CN 112525928 B CN112525928 B CN 112525928B CN 202011117548 A CN202011117548 A CN 202011117548A CN 112525928 B CN112525928 B CN 112525928B
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- 238000003466 welding Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a welding line radiographic inspection film hidden bag fixing device capable of realizing the fixation of a film hidden bag of a whole welding line at one time, which comprises a fixing belt, wherein at least two adjusting slide blocks are connected in series, the adjusting slide blocks are connected with the fixing belt through mounting holes arranged on the adjusting slide blocks and plug blocks matched with the mounting holes, the plug blocks are made of elastic rubber, the adjusting slide blocks are made of materials which are rigid compared with the plug blocks, each adjusting slide block is connected with a hidden bag fixing assembly through a group of connecting and positioning mechanisms, and each hidden bag fixing assembly comprises a positioning block and a hidden bag gasket which is connected with the positioning block in a telescopic adjusting manner. The invention adopts the large-area gasket contact, can ensure that the film is effectively clung to the workpiece, improves the quality of the detection film, can realize the film hidden pocket fixation of the whole welding line at one time, effectively improves the detection efficiency, and is particularly suitable for the radiation detection film hidden pocket fixation of the tube body and the connecting pipe fillet welding line with various specifications.
Description
Technical Field
The invention relates to the field of weld joint ray detection, in particular to a fixing device for detecting a film hidden bag.
Background
With the rapid development of chemical technology, large-scale complex high-parameter chemical heat exchanger products are continuously emerging, normal operation of the products is guaranteed under severe operation conditions, and quality control of welding seams becomes important. The fillet weld is discontinuous in structure, complex in stress distribution after bearing and serious in stress concentration, and the fillet weld on important welding seams such as sealing heads and cylinder bodies is converted into welding seams similar to an embedded structure of a butt welding seam by processing flanges on the fillet weld, so that the butt welding seams are butt welding seams according to TSG 0001-2012 of boiler safety technology supervision regulations and TSG21-2016 of fixed pressure vessel safety technology supervision regulations, and 100% ray detection is required according to NB/T47013.
During the radial detection of the embedded welding seam, the radial detection device is arranged on one side of the welding seam, and a dark bag filled with a special radial detection film is arranged on the other side of the welding seam. Because the embedded welding seam structure is special, the common belt binding and various tightening devices are difficult to borrow force and cannot be implemented. The prior hidden pocket is mainly fixed by an adhesive tape or a magnetic clamp, but the hidden pocket is damaged due to the fact that the adhesive tape has adhesive marks, the subsequent process is easily affected by the residual adhesive marks on a workpiece, the magnetic clamp is in point contact, the adhesive tape is easily bulged, the quality of a negative film is easily detected by image rays, the adhesive tape and the magnetic clamp can be fixed one by one, the adhesive tape and the magnetic clamp are easily fallen or shifted in the detection process, the re-shooting is caused, and the image detection efficiency and the detection quality are improved.
At present, a film hidden bag fixing device which can be conveniently used in fillet weld ray detection does not exist.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the welding seam ray detection film hidden bag fixing device capable of realizing the film hidden bag fixing of the whole welding seam at one time.
The technical scheme adopted for solving the technical problems is as follows: the device comprises a fixing belt which is connected with at least two adjusting sliding blocks in series, wherein the adjusting sliding blocks are connected with the fixing belt through mounting holes arranged on the adjusting sliding blocks and plugs matched with the mounting holes, and each adjusting sliding block is connected with a dark bag fixing assembly through a group of connecting and positioning mechanisms.
The hidden bag fixing assembly comprises a positioning block and a hidden bag gasket which is connected with the positioning block in a telescopic and adjustable mode.
The hidden bag gasket is formed by compounding a rigid supporting plate and a flexible rubber pad.
The positioning block is connected with a lifting button, the tail end of the lifting button is fixedly connected with the hidden bag gasket, and a spring is sleeved between the lifting button and the positioning block.
The connecting and positioning mechanism comprises a first connecting rod and a second connecting rod which are mutually hinged, the first connecting rod is hinged with the adjusting slide block, the second connecting rod is connected with the positioning block through a universal ball joint, the first connecting rod is connected with the second connecting rod through a supporting rod, and two ends of the supporting rod can move and be fixed along the first connecting rod and the second connecting rod.
The first connecting rod and the second connecting rod are rods with sliding grooves, and two ends of the supporting rod are respectively fixed on small sliding blocks which are in sliding connection with the sliding grooves on the first connecting rod and the second connecting rod.
The small sliding block is provided with a small sliding block positioning device acting on the sliding groove.
The fixing belt is provided with two fixing holes which are arranged side by side, and two mounting holes which are arranged at intervals are formed in the corresponding adjusting sliding blocks.
A lock catch with adjustable length is connected between the head end and the tail end of the fixing belt.
The chock is made of rubber having elasticity, and the adjustment slider is made of a material having rigidity as compared with the chock.
The beneficial effects of the invention are as follows: the large-area gasket contact is adopted, so that the film can be effectively clung to a workpiece, the quality of a detection negative film is improved, the film hidden bag fixing of the whole welding line can be realized at one time, the fixing and taking-down operation is convenient, the detection efficiency can be effectively improved, and the film hidden bag fixing device is suitable for fixing the radiographic detection film hidden bags of the tube bodies and the connecting tube fillet welding lines with various specifications. The fixing of other equipment of the fillet weld type structure can also be realized by referring to the device of the invention.
Drawings
FIG. 1 is a schematic illustration of a fillet weld of an embedded structure.
FIG. 2 is a schematic view of a weld radiographic inspection film bag fixing device for bag fixing according to the present invention.
Fig. 3 is a schematic view of the bag-in-place fixture assembly of fig. 2.
FIG. 4 is a schematic view of the connection portion of the first link and the support bar in FIG. 2.
Marked in the figure as: 1-shell, 2-weld joint, 3-connecting pipe, 4-film hidden bag, 5-fixed belt, 6-adjusting slide block, 7-connecting positioning mechanism, 8-hidden bag fixing component, 9-lock catch, 10-spring, 61-mounting hole, 62-chock, 71-articulated joint, 72-connecting rod I, 73-articulated point, 74-connecting rod II, 75-universal ball joint, 76-supporting rod, 761-chute, 762-small slide block positioning device, 763-small slide block, 81-positioning block, 82-hidden bag gasket, 83-lifting button, 821-supporting plate, 822-rubber pad.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1, 2 and 3, the welding seam radiographic inspection film dark bag fixing device of the present invention includes a fixing belt 5 connected in series with a plurality of adjusting sliders 6, the adjusting sliders 6 are connected with the fixing belt 5 through a mounting hole 61 provided on the adjusting sliders 6 and a plug 62 matching with the mounting hole 61, wherein the plug 62 is provided with a hole for the fixing belt 5 to pass through, the plug 62 is made of elastic rubber, the adjusting sliders 6 are made of a material having rigidity compared with the plug 62, and each plug 62 can be fixed at a proper position on the fixing belt 5 by utilizing friction between the rubber and the fixing belt 5 and between the adjusting sliders 6, so that the relative position of each adjusting slider 6 and the fixing belt 5 is determined, meanwhile, each adjusting slider 6 is connected with a dark bag fixing assembly 8 through a set of connecting and positioning mechanisms 7, so that the plurality of dark bag fixing assemblies 8 are arranged in a circle, and can be used for fixing one circle of film dark bags 4, thus all required fixing work of the whole circular film dark bags 4 can be completed at one time, and the efficiency of detecting work can be effectively improved.
When in use, the number of needed film dark bags 4 is determined according to the length of the annular welding seam, and the same number of adjusting sliding blocks 6 are correspondingly strung in the fixed belt 5.
As shown in fig. 2, the dark bag fixing assembly 8 comprises a positioning block 81 and a dark bag gasket 82, the positioning block 81 is connected with a lifting button 83, the tail end of the lifting button 83 is fixedly connected with the dark bag gasket 82, and a spring 10 is sleeved between the lifting button 83 and the positioning block 81, so that the dark bag gasket 82 can be telescopically adjusted in a certain range relative to the positioning block 81, and the film dark bag 4 is fixed between the dark bag gasket 82 and the shell 1 by utilizing spring force. The fixed area of the hidden bag gasket 82 is increased, so that the film can be guaranteed to be clung to a workpiece, the quality of the detected film is improved, the hidden bag gasket 82 is formed by compounding the rigid support plate 821 and the flexible rubber pad 822, and therefore flexible protection is formed for the hidden bag 4 of the film, and the film is prevented from being damaged.
As shown in fig. 2, in practical application, the relative position between the fixed position of the film bag and the fixed belt needs to be adjusted, and the adjustment is realized by adjusting the position between the adjusting positioning block 81 and the adjusting sliding block 6, and in particular, the invention is realized by connecting the positioning mechanism 7. The connecting and positioning mechanism 7 comprises a first connecting rod 72 and a second connecting rod 74 which are mutually hinged at a hinge point 73, the first connecting rod 72 and the adjusting slide block 6 are hinged at a hinge joint 71, the hinge joint 71 is arranged on the adjusting slide block 6, the second connecting rod 74 is connected with a positioning block 81 through a universal ball joint 75, the universal ball joint 75 is arranged on the positioning block 81, the first connecting rod 72 and the second connecting rod 74 are also connected through a supporting rod 76, two ends of the supporting rod 76 can move along the first connecting rod 72 and the second connecting rod 74 and are fixed, the supporting rod 76 is used for adjusting the opening angle of the first connecting rod 72 and the second connecting rod 74 so as to determine the approximate distance between the positioning block 81 and the adjusting slide block 6, and the purpose of adopting the universal ball joint 75 is to properly adjust the orientation of a hidden bag gasket 82 so as to reliably fix the hidden film bag 4.
Referring to fig. 4, the first link 72 and the second link 74 are rods with sliding grooves, two ends of the supporting rod 76 are respectively fixed on a small slide block 763 slidably connected with the sliding grooves 761 on the first link 72 and the second link 74, and the small slide block 763 is provided with a small slide block positioning device 762 acting on the sliding grooves 761. After the support bar 76 is adjusted in place, it is positioned by a small slide positioning device 762. For example, the small slide positioning device 762 may be a nut that can press the small slide 762 onto the chute 761, or other positioning devices may be used.
As shown in fig. 1, a lock catch 9 with adjustable length is connected between the head end and the tail end of the fixing strap 5, so as to fix the connecting tubes 3 with different diameters conveniently, the fixing strap 5 is provided with two fixing holes 61 arranged side by side, and two mounting holes 61 arranged at intervals are correspondingly arranged on the adjusting slide block 6, so that the adjusting slide block 6 is fixed more firmly, the position of the hidden bag gasket 82 is fixed, and finally, the hidden film bag 4 is fixed better.
Therefore, the invention is suitable for fixing the radiographic inspection film hidden bags of the cylinder bodies and the connecting pipes with various specifications, has no limitation on the materials of the cylinder bodies and the connecting pipes, and is a universal and practical inspection device.
Examples:
taking the example that the applicant completes the fixation of the radiographic inspection hidden bag film of the butt welding seam of the embedded structure of the tube body connecting tube of a chemical container, 9 steps are taken as an example, wherein the steps 1-2 are the processing of the sliding rod part, the step 3 is the processing of the hidden bag gasket part, the step 4 is the fixing belt part, and the steps 5-9 are the using operation of the device, and the detailed operation of each step is as follows.
Step 1: as shown in fig. 2, an L-shaped adjusting slider 6 is machined, on which two mounting holes 61 and corresponding plugs 62 are machined, the diameters of the mounting holes 61 and the plugs 62 being matched for fixing the adjusting slider 6 to the fixing band 5. The body of the adjusting slide 6 is made of rigid materials, such as alloy steel, and the plug 62 can be made of rubber with slight flexibility. The L-shaped adjusting slide block has the advantages that the part matched with the fixing belt can be as close to the outer wall of the connecting pipe as possible, which is equivalent to firm bundling, so that the adjusting slide block 6 can be reliably fixed, and the position far away from the outer wall of the connecting pipe in the L-shaped structure is used for installing a hinge joint 71 which is described later, so that the connecting and positioning mechanism 7 is easy to arrange and adjust, and the situation that a certain distance exists between the normal welding seam position and the outer wall of the connecting pipe is adapted.
Step 2: as shown in fig. 2 and 4, the connecting and positioning mechanism 7 is processed, two connecting rods with proper lengths are prepared, a first connecting rod 72 and a second connecting rod 74 are connected through a hinge, the other end of the first connecting rod 72 is connected with a hinge head 71, the hinge head 71 is mounted on the adjusting slide block 6, the first connecting rod 72 is connected with the adjusting slide block 6 in the step 1, and the other end of the second connecting rod 74 is connected with a universal ball joint 75. The side surfaces of the first connecting rod 72 and the second connecting rod 74 are provided with sliding grooves 761, so that two ends of the supporting rod 76 can slide on the two connecting rods respectively and are fixed by a small sliding block positioning device 762. The connecting rod and the supporting rod can be made of rigid and light alloy materials. The connecting rod type connecting and positioning mechanism 7 has a certain adjustment margin in the axis direction of the connecting pipe, can adapt to the distance change between the position of the welding line and the outer wall of the connecting pipe through flexible adjustment in a certain range, presses and fixes the film hidden bag 4 in the direction close to positive pressure as much as possible, and has good adaptability.
Step 3: as shown in fig. 2 and 3, the processing dark bag fixing assembly 8, the dark bag fixing assembly 8 includes a positioning block 81 and a dark bag gasket 82, the dark bag gasket 82 is formed by compounding a rigid support plate 821 and a flexible rubber pad 822, the rigid support plate 821 is made of alloy materials, a lifting button 83 is connected to the positioning block 81, the tail end of the lifting button 83 is fixedly connected with the support plate 821 of the dark bag gasket 82, a spring 10 is sleeved on the lifting button 83, the spring 10 is located between the support plate 821 and the positioning block 81, and is a pressure spring, the movement of the dark bag gasket 82 in the vertical direction is realized through the lifting button 83, and the positioning block 81 is connected with a second connecting rod 74 through a universal ball joint 75.
Step 4: as shown in fig. 2, a fixing band 5 is prepared, the fixing band 5 may be made of a slightly flexible iron wire or steel wire, and a lock catch 9 with adjustable length is connected between the head end and the tail end of the fixing band 5.
Step 5: and determining the number of film transilluminations, namely the number of film dark bags 4, according to the corresponding detection standard and the specification and the size of the welding seam. A film pouch 4 corresponds to the connecting and positioning mechanism 7 and the pouch fixing assembly 8 processed in steps 1 to 3. The prepared corresponding numbers of connecting and positioning mechanisms 7 and the hidden bag fixing assemblies 8 are fixed on the fixing belt 5 through the adjusting slide blocks 6 in an equidistant sleeving manner.
Step 6: the length of the fixing band 5 is adjusted according to the specification of the connecting pipe 3, and the fixing band 5 fixed with all the adjusting slide blocks 6 is fastened on the connecting pipe 3 through the lock catch 9. In this process, the height of the whole device is adjusted, preferably so that most of the bag gaskets 82 just contact the weld 2.
Step 7: the support rods 76 are adjusted according to the curvature change of the weld 2 so that the pouch gasket 82 of each device corresponds to the position of the weld 2.
Step 8: the prepared film camera bags 4 are placed one by one between the camera bag spacer 82 and the weld 2. By adjusting the lifting knob 83, the distance between the hidden pocket spacer 82 and the welding seam 2 is shortened, so that the film hidden pocket 4 is tightly clamped between the hidden pocket spacer 82 and the welding seam 2.
Step 9: when the inspection is again performed to confirm that all the film bags 4 have been reliably fixed, the fixing work of the film bags 4 for radiation detection is completed.
The device of the embodiment is also suitable for fixing the inserted and riding type fillet weld radiographic inspection film hidden bags and other inspection equipment of the fillet weld structure, and can be realized by referring to the device of the invention.
Claims (1)
1. The method for fixing the film hidden bag for detecting the welding seam rays is used for detecting the welding seam (2) around the connecting pipe (3), and is characterized in that: the used welding seam ray detection film dark bag fixing device comprises a fixing belt (5) which is connected with at least two adjusting slide blocks (6) in series, wherein the adjusting slide blocks (6) are connected with the fixing belt (5) through mounting holes (61) arranged on the adjusting slide blocks (6) and plug blocks (62) matched with the mounting holes (61), each adjusting slide block (6) is connected with a dark bag fixing assembly (8) through a group of connecting and positioning mechanisms (7), and the fixing method comprises the following steps:
step 1, two mounting holes (61) and corresponding plugs (62) are processed on an adjusting slide block (6), and the diameters of the mounting holes (61) and the plugs (62) are matched;
step 2, processing a connecting and positioning mechanism (7), wherein the connecting and positioning mechanism (7) comprises a first connecting rod (72) and a second connecting rod (74) which are mutually hinged, the other end of the first connecting rod (72) is connected with a hinge joint (71), the hinge joint (71) is arranged on an adjusting slide block (6), the second connecting rod (74) is connected with a positioning block (81) through a universal ball joint (75), sliding grooves (761) are processed on the side surfaces of the first connecting rod (72) and the second connecting rod (74), and a supporting rod (76) is connected to a small slide block (763) which is in sliding and positioning fit with the sliding grooves (761);
step 3, processing a dark bag fixing assembly (8), wherein the dark bag fixing assembly (8) comprises a positioning block (81) and a dark bag gasket (82) which is connected with the positioning block (81) in a telescopic adjustment mode, the dark bag gasket (82) is formed by compounding a rigid supporting plate (821) and a flexible rubber pad (822), a lifting button (83) is connected to the positioning block (81), the tail end of the lifting button (83) is fixedly connected with the supporting plate (821) of the dark bag gasket (82), a spring (10) is sleeved on the lifting button (83), the spring (10) is positioned between the supporting plate (821) and the positioning block (81) and is a pressure spring, and the positioning block (81) is connected with a connecting rod II (74) through a universal ball joint (75);
step 4, preparing two fixing belts (5), wherein a lock catch (9) with adjustable length is connected between the head end and the tail end of the fixing belts (5);
step 5, determining the number of film transillumination sheets, namely the number of film dark bags (4), according to the detection standard and the specification and the size of the welding seam, wherein one film dark bag (4) corresponds to one connecting and positioning mechanism (7) and one dark bag fixing assembly (8), and the prepared corresponding number of connecting and positioning mechanisms (7) and dark bag fixing assemblies (8) are fixed on a fixing belt (5) through equidistant sleeving of an adjusting slide block (6);
step 6, adjusting the length of the fixing belt (5), and fastening the fixing belt (5) fixed with all the adjusting sliding blocks (6) on the connecting pipe (3) through the lock catch (9);
step 7: according to the curvature change of the welding line (2), adjusting each supporting rod (76) to enable the hidden pocket gasket (82) of each device to correspond to the position of the welding line (2);
and 8, placing the prepared film dark bags (4) between the dark bag gaskets (82) and the welding lines (2) one by one, and shortening the distance between the dark bag gaskets (82) and the welding lines (2) by adjusting the lifting buttons (83), so that the film dark bags (4) are tightly clamped between the dark bag gaskets (82) and the welding lines (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011117548.6A CN112525928B (en) | 2020-10-19 | 2020-10-19 | Welding seam ray detection film hidden bag fixing device |
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| CN202011117548.6A CN112525928B (en) | 2020-10-19 | 2020-10-19 | Welding seam ray detection film hidden bag fixing device |
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| CN112525928B true CN112525928B (en) | 2023-10-31 |
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| CN113484340B (en) * | 2021-06-10 | 2023-01-24 | 中车唐山机车车辆有限公司 | Welding seam ray detection device and detection method |
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