CN114217043A - Nondestructive detection method for pipeline girth weld - Google Patents
Nondestructive detection method for pipeline girth weld Download PDFInfo
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- CN114217043A CN114217043A CN202111573069.XA CN202111573069A CN114217043A CN 114217043 A CN114217043 A CN 114217043A CN 202111573069 A CN202111573069 A CN 202111573069A CN 114217043 A CN114217043 A CN 114217043A
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/207—Welded or soldered joints; Solderability
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a nondestructive testing method for a pipeline girth weld, which comprises the following steps: s1, hoisting the welded pipeline; s2, hoisting the pipeline to a pipeline girth weld nondestructive testing device; s3, cleaning the girth welding seam through a pipeline girth welding seam nondestructive testing device; s4, detecting the girth welding seam after cleaning the girth welding seam; and S5, hoisting the pipeline away from the pipeline girth weld nondestructive testing device after detecting the girth weld seam. When the double-shaft motor drives the first supporting mechanism and the second supporting mechanism to operate, the pipeline can be driven to rotate, the transmission mesh belt can be driven to rotate at the same time, and the contact positions of the transmission mesh belt and the pipeline are opposite in rotation direction, so that the cleaning speed of the transmission mesh belt on the circumferential welding seam of the pipeline is improved.
Description
Technical Field
The invention belongs to the technical field of welding seam detection equipment, and particularly relates to a nondestructive detection method for a pipeline girth welding seam.
Background
At present, when nondestructive detection is carried out on the pipeline girth weld seam, most of pipeline girth weld seams are detected by holding a weld seam detector through related technicians, the detection time is long, the requirement on the related technicians is high, and the technicians are difficult to ensure stable measurement effect after long-time measurement, so that the accuracy of the measurement result is directly influenced.
Moreover, after the pipeline is completely welded, dirt is easily remained near the welding seam, so that the later detection work is further influenced, the accuracy of the detection result is further reduced, and therefore the traditional pipeline girth welding seam detection mode needs to be improved.
Disclosure of Invention
Aiming at the problems, the invention provides a nondestructive testing method for a pipeline girth weld, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a nondestructive testing method for a pipeline girth weld comprises the following steps:
s1, hoisting the welded pipeline;
s2, hoisting the pipeline to a pipeline girth weld nondestructive testing device;
s3, cleaning the girth welding seam through a pipeline girth welding seam nondestructive testing device;
s4, detecting the girth welding seam after cleaning the girth welding seam;
s5, hoisting the pipeline away from the pipeline girth weld nondestructive testing device after detecting the girth weld seam;
the nondestructive testing device for the pipeline circumferential weld comprises a base, wherein a first rolling supporting mechanism and a second rolling supporting mechanism are installed at the top of the base, a cleaning mechanism is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, a transverse plate is arranged above the cleaning mechanism and fixedly connected with one side of the base through a vertical plate, and a weld detector is arranged at the lower part of the transverse plate.
Preferably, the first rolling support mechanism comprises two groups of first anti-slip rollers, the two groups of first anti-slip rollers are fixedly connected with the upper surface of the base through support frames, and the first anti-slip rollers are rotatably connected with the support frames;
the second rolling support mechanism comprises two groups of second anti-slip rollers, the two groups of second anti-slip rollers are fixedly connected with the upper surface of the base through support frames, and the second anti-slip rollers are rotatably connected with the support frames;
and a double-shaft motor is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, and the first anti-slip roller and the second anti-slip roller are respectively connected with the output end of the double-shaft motor.
Preferably, the cleaning mechanism comprises four groups of driving rollers, two ends of each group of driving rollers are rotatably connected with a supporting plate, the four groups of driving rollers are respectively connected with the base through the supporting plates, two groups of driving rollers are positioned above the base, the other two groups of driving rollers are positioned below the base, a driving mesh belt is arranged on the outer sides of the four groups of driving rollers, and the outer side surfaces of the driving mesh belt are connected with bristles;
one end of a group of driving rollers close to the double-shaft motor is connected with a driven gear, the output end of the double-shaft motor is connected with a driving gear, and the driven gear is in meshing transmission with the driving gear.
Through adopting above-mentioned technical scheme, when first supporting mechanism of biax motor drive and second supporting mechanism operate, can drive the pipeline and rotate, can drive the transmission guipure rotation simultaneously, transmission guipure and pipeline contact position turn to opposite to the clearance speed of pipeline girth weld gap has been improved to the transmission guipure.
Preferably, a first hydraulic telescopic rod is fixedly installed on the lower surface of the base, the lower end of the first hydraulic telescopic rod is connected with a bottom plate, a first reset spring is connected between the bottom plate and the base, two sides of the bottom plate are bent downwards to form folded plates, and an auxiliary roller is rotatably connected between the two groups of the folded plates;
and a second hydraulic telescopic rod is connected below the transverse plate, the second hydraulic telescopic rod is communicated with the first hydraulic telescopic rod through a liquid guide pipe, and the welding seam detector is connected with the transverse plate through the second hydraulic telescopic rod.
By adopting the technical scheme, when the pipeline to be detected is hoisted to the first supporting mechanism and the second supporting mechanism, the lower edge of the pipeline can downwards extrude the transmission mesh belt in a horizontal state, the auxiliary roller which is pressed against the lower part of the transmission mesh belt can be upwards pulled at the moment so as to extrude the first hydraulic telescopic rod, and the first hydraulic telescopic rod and the second hydraulic telescopic rod are driven so as to extend the second hydraulic telescopic rod when the first hydraulic telescopic rod is shortened, so that the first baffle plate is downwards pushed, and the welding seam detector is convenient to be closer to the pipeline to be detected; the larger the diameter of the pipeline to be detected is, the smaller the extrusion degree of the lower edge of the pipeline on the transmission mesh belt is, and at the moment, the smaller the shortening degree of the first hydraulic telescopic rod is, the smaller the downward movement degree of the welding seam detector driven by the second hydraulic telescopic rod is; on the contrary, the smaller the diameter of the pipeline to be detected is, the larger the extrusion degree of the lower edge of the pipeline to the transmission mesh belt is, at the moment, the larger the shortening degree of the first hydraulic telescopic rod is, and the larger the downward movement degree of the welding seam detector driven by the second hydraulic telescopic rod is.
Preferably, a convex block is arranged on the side face of the auxiliary roller, at least two groups of sliding rods are connected to one side, close to the auxiliary roller, of the convex block, cavities corresponding to the sliding rods are arranged on the inner side of the auxiliary roller, piston plates are connected to the two groups of cavities in a sliding mode, the piston plates are connected with one ends of the sliding rods, the sliding rods penetrate through the auxiliary roller and are in sliding contact with the auxiliary roller, air guide holes are communicated between adjacent cavities, a rotary joint is connected to one side of the auxiliary roller and is communicated with the air guide holes, one side of each rotary joint is communicated with a one-way air outlet valve, a one-way air inlet valve is installed on the side face of the auxiliary roller and is communicated to the cavities through an air inlet pipe, and a spring used for pushing the piston plates outwards is arranged in the cavities;
the lower end of the second hydraulic telescopic rod is connected with a first baffle, a folding air bag is arranged below the first baffle, a second baffle is arranged below the folding air bag, a second reset spring is connected between the first baffle and the second baffle, and the folding air bag is communicated with the rotary joint through an air duct.
Through adopting above-mentioned technical scheme, can drive the auxiliary roller rotatory when the transmission guipure operation, the lug compresses the air that the cavity was discharged repeatedly and fills folding gasbag and make folding gasbag inflation, and folding gasbag makes the second baffle move down to the drive welding seam detector removes to the pipeline, guarantees the contact effect of welding seam detector and pipeline, thereby guarantees the detection effect of welding seam detector to pipeline girth weld seam.
Preferably, the side surface of the auxiliary roller is provided with an air blowing nozzle, the air blowing nozzle faces one side of the bump, a pressure release valve is installed in the cavity, and the air blowing nozzle is communicated with the pressure release valve.
By adopting the technical scheme, the auxiliary roller is driven to rotate when the transmission mesh belt runs, once the air exhausted by the lug repeated compression cavity is difficult to be filled into the folding air bag, the air in the cavity is exhausted by the relief valve after reaching a certain value, and therefore the cleaning work of the transmission mesh belt is carried out by exhausting through the air blowing nozzle.
Preferably, the upper surface of the first baffle is connected with a second magnet, the lower surface of the transverse plate is provided with a first magnet corresponding to the second magnet, the first magnet and the second magnet are adsorbed when being close to each other, the air duct penetrates through the space between the first magnet and the second magnet, and the air duct is tightly pressed and closed when being adsorbed by the first magnet and the second magnet.
Through adopting above-mentioned technical scheme, before the extension of second hydraulic stretching pole, first magnet and second magnet adsorb to turn off the air duct with this extrusion, when making drive transmission guipure rotate, the air of extruding in the cavity can only clear up the drive transmission guipure through the relief valve and follow the blowout of blowing nozzle, can also clear up the brush hair with this, guarantees the clearance effect to pipeline girth welding gap of later stage brush hair.
Preferably, the bristles are metal bristles.
Through adopting above-mentioned technical scheme, when the transmission guipure rotated, can improve the clearance effect to pipeline welding position.
The invention has the technical effects and advantages that:
1. when the double-shaft motor drives the first supporting mechanism and the second supporting mechanism to operate, the pipeline can be driven to rotate, the transmission mesh belt can be driven to rotate at the same time, and the contact positions of the transmission mesh belt and the pipeline are opposite in rotation direction, so that the cleaning speed of the transmission mesh belt on the circumferential welding seam of the pipeline is improved;
2. when a pipeline to be detected is hoisted to the first supporting mechanism and the second supporting mechanism, the lower edge of the pipeline can downwards extrude the transmission mesh belt in a horizontal state, the auxiliary roller which is pressed against the lower part of the transmission mesh belt can be upwards pulled to extrude the first hydraulic telescopic rod, and the first hydraulic telescopic rod and the second hydraulic telescopic rod are driven to extend, so that the second hydraulic telescopic rod extends when the first hydraulic telescopic rod is shortened, the first baffle is downwards pushed, and a welding line detector is convenient to be closer to the pipeline to be detected;
3. the auxiliary roller is driven to rotate when the transmission mesh belt runs, the lug repeatedly compresses air discharged from the cavity to fill the folded air bag to expand the folded air bag, and the folded air bag enables the second baffle to move downwards, so that the welding seam detector is driven to move towards the pipeline, the contact effect of the welding seam detector and the pipeline is ensured, and the detection effect of the welding seam detector on the circumferential welding seam of the pipeline is ensured; and when the lug and the transmission mesh belt are repeatedly contacted, the transmission mesh belt can be driven to vibrate, so that the transmission mesh belt is cleaned in a vibrating manner, and the cleaning effect on the transmission mesh belt and bristles on the transmission mesh belt is further improved
4. When the transmission mesh belt runs, the auxiliary roller is driven to rotate, once the air exhausted by the lug repeated compression cavity is difficult to be filled into the folding air bag, the air in the cavity is exhausted by the pressure relief valve after reaching a certain value, and therefore the cleaning work of the transmission mesh belt is carried out through the exhaust of the air blowing nozzle.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows an isometric view of the present invention;
FIG. 2 shows a schematic bottom structure of the present invention;
FIG. 3 shows a schematic front view of the present invention;
FIG. 4 shows an enlarged view of area A of FIG. 3 of the present invention;
FIG. 5 shows an enlarged view of area B of FIG. 3 of the present invention;
fig. 6 shows a schematic cross-sectional structure of the auxiliary roller of the present invention.
In the figure: 1. a base; 2. a first anti-slip roll; 3. a second anti-slip roll; 4. a driving roller; 5. a vertical plate; 6. a transverse plate; 7. a weld detector; 8. a transmission mesh belt; 9. a double-shaft motor; 10. a drive gear; 11. a driven gear; 12. a first hydraulic telescopic rod; 13. a base plate; 14. a first return spring; 15. an auxiliary roller; 16. a second hydraulic telescopic rod; 17. a bump; 18. a slide bar; 19. a cavity; 20. a piston plate; 21. a rotary joint; 22. a first baffle plate; 23. a second baffle; 24. folding the airbag; 25. a blowing nozzle; 26. a pressure relief valve; 27. a one-way air outlet valve; 28. folding the plate; 29. an air vent; 30. a one-way intake valve; 31. an air inlet pipe; 32. a gas blowing hole; 33. a first magnet; 34. a second magnet; 35. a second return spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the invention provides a nondestructive testing method for a pipe girth weld, which comprises the following steps:
s1, hoisting the welded pipeline;
s2, hoisting the pipeline to a pipeline girth weld nondestructive testing device;
s3, cleaning the girth welding seam through a pipeline girth welding seam nondestructive testing device;
s4, detecting the girth welding seam after cleaning the girth welding seam;
s5, hoisting the pipeline away from the pipeline girth weld nondestructive testing device after detecting the girth weld seam;
the nondestructive testing device for the circumferential weld of the pipeline comprises a base 1, wherein a first rolling supporting mechanism and a second rolling supporting mechanism are installed at the top of the base 1, a cleaning mechanism is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, a transverse plate 6 is arranged above the cleaning mechanism, the transverse plate 6 is fixedly connected with one side of the base 1 through a vertical plate 5, and a weld detector 7 is arranged on the lower portion of the transverse plate 6.
As an embodiment of the invention, the first rolling support mechanism comprises two groups of first anti-slip rollers 2, the two groups of first anti-slip rollers 2 are fixedly connected with the upper surface of the base 1 through a support frame, and the first anti-slip rollers 2 are rotatably connected with the support frame;
the second rolling support mechanism comprises two groups of second anti-slip rollers 3, the two groups of second anti-slip rollers 3 are fixedly connected with the upper surface of the base 1 through support frames, and the second anti-slip rollers 3 are rotatably connected with the support frames;
a double-shaft motor 9 is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, and the first anti-slip roller 2 and the second anti-slip roller 3 are respectively connected with the output end of the double-shaft motor 9.
As an embodiment of the invention, the invention further comprises that the cleaning mechanism comprises four groups of driving rollers 4, two ends of each group of driving rollers 4 are rotatably connected with supporting plates, the four groups of driving rollers 4 are respectively connected with the base 1 through the supporting plates, two groups of driving rollers 4 are positioned above the base 1, the other two groups of driving rollers 4 are positioned below the base 1, driving mesh belts 8 are arranged on the outer sides of the four groups of driving rollers 4, and the outer side surfaces of the driving mesh belts 8 are connected with bristles;
one end of a group of driving rollers 4 close to the double-shaft motor 9 is connected with a driven gear 11, the output end of the double-shaft motor 9 is connected with a driving gear 10, and the driven gear 11 is in meshing transmission with the driving gear 10.
Through adopting above-mentioned technical scheme, when biax motor 9 drive first supporting mechanism and second supporting mechanism operation, can drive the pipeline and rotate, can drive transmission guipure 8 simultaneously and rotate, transmission guipure 8 and pipeline contact position turn to opposite to the clearance speed of transmission guipure 8 to pipeline girth weld gap has been improved.
As an embodiment of the invention, the invention further comprises that a first hydraulic telescopic rod 12 is fixedly installed on the lower surface of the base 1, the lower end of the first hydraulic telescopic rod 12 is connected with a bottom plate 13, a first return spring 14 is connected between the bottom plate 13 and the base 1, two sides of the bottom plate 13 are bent downwards to form folded plates 28, and an auxiliary roller 15 is rotatably connected between the two groups of folded plates 28;
the lower part of the transverse plate 6 is connected with a second hydraulic telescopic rod 16, the second hydraulic telescopic rod 16 is communicated with the first hydraulic telescopic rod 12 through a liquid guide pipe, and the welding seam detector 7 is connected with the transverse plate 6 through the second hydraulic telescopic rod 16.
By adopting the technical scheme, when a pipeline to be detected is hoisted to the first supporting mechanism and the second supporting mechanism, the lower edge of the pipeline can downwards extrude the transmission mesh belt 8 in a horizontal state, the auxiliary roller 15 which is pressed against the lower part of the transmission mesh belt 8 can be upwards pulled at the moment so as to extrude the first hydraulic telescopic rod 12, and the first hydraulic telescopic rod 12 and the second hydraulic telescopic rod 16 are driven, so that the second hydraulic telescopic rod 16 extends when the first hydraulic telescopic rod 12 is shortened, the first baffle 22 is downwards pushed, and the welding seam detector 7 is convenient to be closer to the pipeline to be detected; the larger the diameter of the pipeline to be detected is, the smaller the extrusion degree of the lower edge of the pipeline on the transmission mesh belt 8 is, at the moment, the smaller the shortening degree of the first hydraulic telescopic rod 12 is, and the smaller the degree of the second hydraulic telescopic rod 16 driving the welding seam detector 7 to move downwards is; on the contrary, the smaller the diameter of the pipeline to be detected is, the larger the extrusion degree of the lower edge of the pipeline to the transmission mesh belt 8 is, at this time, the larger the shortening degree of the first hydraulic telescopic rod 12 is, and the larger the degree of the second hydraulic telescopic rod 16 driving the weld seam detector 7 to move downwards is.
As an embodiment of the present invention, the present invention further comprises that the side of the auxiliary roller 15 is provided with a bump 17, one side of the lug 17 close to the auxiliary roller 15 is connected with at least two groups of sliding rods 18, the inner side of the auxiliary roller 15 is provided with a cavity 19 corresponding to the sliding rods 18, the two groups of cavities 19 are both connected with a piston plate 20 in a sliding way, the piston plate 20 is connected with one end of the sliding rod 18, the sliding rod 18 penetrates through the auxiliary roller 15 and is in sliding contact with the auxiliary roller 15, air guide holes 29 are communicated between adjacent cavities 19, one side of the auxiliary roller 15 is connected with a rotary joint 21, the air guide hole 29 is communicated with the rotary joint 21, one side of the rotary joint 21 is communicated with a one-way air outlet valve 27, the side surface of the auxiliary roller 15 is provided with a one-way air inlet valve 30, the one-way air inlet valve 30 is communicated to the cavity 19 through an air inlet pipe 31, and a spring for pushing the piston plate 20 outwards is arranged in the cavity 19;
the lower end of the second hydraulic telescopic rod 16 is connected with a first baffle 22, a folding air bag 24 is arranged below the first baffle 22, a second baffle 23 is arranged below the folding air bag 24, a second return spring 35 is connected between the first baffle 22 and the second baffle 23, and the folding air bag 24 is communicated with the rotary joint 21 through an air duct.
By adopting the technical scheme, the auxiliary roller 15 is driven to rotate when the transmission mesh belt 8 operates, the lug 17 repeatedly compresses air discharged from the cavity 19 and fills the folded air bag 24 to expand the folded air bag 24, and the folded air bag 24 enables the second baffle 23 to move downwards, so that the welding seam detector 7 is driven to move towards the pipeline, the contact effect of the welding seam detector 7 and the pipeline is ensured, and the detection effect of the welding seam detector 7 on the girth welding seam of the pipeline is ensured; moreover, when the lug 17 and the transmission mesh belt 8 are contacted repeatedly, the transmission mesh belt 8 is driven to vibrate, so that the transmission mesh belt 8 is cleaned in a vibrating manner, and the cleaning effect on the transmission mesh belt 8 and the bristles on the transmission mesh belt is further improved.
As an embodiment of the invention, the invention further comprises that a blowing nozzle 25 is arranged on the side surface of the auxiliary roller 15, the blowing nozzle 25 faces the side of the bump 17, a pressure relief valve 26 is installed in the cavity 19, and the blowing nozzle 25 is communicated with the pressure relief valve 26.
By adopting the technical scheme, the auxiliary roller 15 is driven to rotate when the transmission mesh belt 8 operates, once the air exhausted by the lug 17 repeatedly compressing the cavity 19 is difficult to be filled into the folding air bag 24, the air pressure in the cavity 19 reaches a certain value and then the relief valve exhausts the air, so that the cleaning work of the transmission mesh belt 8 is carried out by exhausting the air through the air blowing nozzle 25.
As an embodiment of the present invention, the present invention further includes that a second magnet 34 is connected to an upper surface of the first baffle 22, a first magnet 33 corresponding to the second magnet 34 is mounted on a lower surface of the horizontal plate 6, the first magnet 33 and the second magnet 34 are attracted when they are close to each other, the air duct passes through between the first magnet 33 and the second magnet 34, and the air duct is pressed and closed when the first magnet 33 and the second magnet 34 are attracted.
Through adopting above-mentioned technical scheme, before second hydraulic telescoping rod 16 extension, first magnet 33 and second magnet 34 adsorb to turn off the air duct with this extrusion, when making drive mesh belt 8 rotate, the air of extruding in the cavity 19 can only be cleared up drive mesh belt 8 through relief valve 26 and from blowing nozzle 25 blowout, can also clear up the brush hair with this, guarantees the clearance effect to pipeline girth welding gap of later stage brush hair.
As an embodiment of the present invention, the present invention further comprises that the bristles are metal bristles.
Through adopting above-mentioned technical scheme, when transmission mesh belt 8 rotated, can improve the clearance effect to pipeline welding position.
When the pipeline detection device is used, when a pipeline to be detected is hoisted to the first supporting mechanism and the second supporting mechanism, the lower edge of the pipeline can downwards extrude the transmission mesh belt 8 in a horizontal state, the auxiliary roller 15 which is pressed against the lower part of the transmission mesh belt 8 can be upwards pulled at the moment so as to extrude the first hydraulic telescopic rod 12, the first hydraulic telescopic rod 12 and the second hydraulic telescopic rod 16 are driven, so that the second hydraulic telescopic rod 16 extends when the first hydraulic telescopic rod 12 is shortened, the first baffle plate 22 is downwards pushed, the welding seam detection device 7 is convenient to be closer to the pipeline to be detected, and the expansion degree of a subsequent folding air bag 24 is reduced; the larger the diameter of the pipeline to be detected is, the smaller the extrusion degree of the lower edge of the pipeline on the transmission mesh belt 8 is, at the moment, the smaller the shortening degree of the first hydraulic telescopic rod 12 is, and the smaller the degree of the second hydraulic telescopic rod 16 driving the welding seam detector 7 to move downwards is; on the contrary, the smaller the diameter of the pipeline to be detected is, the larger the extrusion degree of the lower edge of the pipeline to the transmission mesh belt 8 is, at this time, the larger the shortening degree of the first hydraulic telescopic rod 12 is, and the larger the degree of the second hydraulic telescopic rod 16 driving the weld seam detector 7 to move downwards is;
when the double-shaft motor 9 drives the first supporting mechanism and the second supporting mechanism to operate, the pipeline can be driven to rotate, the transmission mesh belt 8 can be driven to rotate at the same time, the contact positions of the transmission mesh belt 8 and the pipeline are opposite in rotation direction, and therefore the cleaning speed of the transmission mesh belt 8 on the circumferential weld seam of the pipeline is improved;
when the transmission mesh belt 8 operates, the auxiliary roller 15 is driven to rotate, the lug 17 repeatedly compresses air discharged from the cavity 19 and fills the folded air bag 24 to expand the folded air bag 24, the folded air bag 24 enables the second baffle 23 to move downwards, so that the welding seam detector 7 is driven to move towards the pipeline, the contact effect of the welding seam detector 7 and the pipeline is ensured, and the detection effect of the welding seam detector 7 on the circumferential welding seam of the pipeline is ensured;
when the transmission mesh belt 8 runs, the auxiliary roller 15 is driven to rotate, once the air exhausted by the lug 17 repeatedly compressing the cavity 19 is difficult to be filled into the folding air bag 24, the air pressure in the cavity 19 reaches a certain value and then the relief valve exhausts, so that the cleaning work of the transmission mesh belt 8 is carried out by exhausting through the air blowing nozzle 25;
and it should also be pointed out that, before second hydraulic stretching pole 16 extends, first magnet 33 and second magnet 34 adsorb to with this extrusion shutoff air duct, make when drive transmission guipure 8 rotates, the air of extruding in the cavity 19 can only be through the relief valve and follow the blowout of gas nozzle 25 and clear up transmission guipure 8, can also clear up the brush hair with this, guarantee the clearance effect to pipeline girth welding gap of later stage brush hair.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A nondestructive testing method for a pipeline girth weld is characterized by comprising the following steps: the method comprises the following steps:
s1, hoisting the welded pipeline;
s2, hoisting the pipeline to a pipeline girth weld nondestructive testing device;
s3, cleaning the girth welding seam through a pipeline girth welding seam nondestructive testing device;
s4, detecting the girth welding seam after cleaning the girth welding seam;
s5, hoisting the pipeline away from the pipeline girth weld nondestructive testing device after detecting the girth weld seam;
the nondestructive testing device for the circumferential weld of the pipeline comprises a base (1), a first rolling supporting mechanism and a second rolling supporting mechanism are installed at the top of the base (1), a cleaning mechanism is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, a transverse plate (6) is arranged above the cleaning mechanism, the transverse plate (6) is fixedly connected with one side of the base (1) through a vertical plate (5), and a weld detector (7) is arranged on the lower portion of the transverse plate (6).
2. The nondestructive testing method for the girth weld of the pipeline as recited in claim 1, wherein:
the first rolling support mechanism comprises two groups of first anti-slip rollers (2), the two groups of first anti-slip rollers (2) are fixedly connected with the upper surface of the base (1) through support frames, and the first anti-slip rollers (2) are rotatably connected with the support frames;
the second rolling support mechanism comprises two groups of second anti-slip rollers (3), the two groups of second anti-slip rollers (3) are fixedly connected with the upper surface of the base (1) through support frames, and the second anti-slip rollers (3) are rotatably connected with the support frames;
a double-shaft motor (9) is arranged between the first rolling supporting mechanism and the second rolling supporting mechanism, and the first anti-slip roller (2) and the second anti-slip roller (3) are respectively connected with the output end of the double-shaft motor (9).
3. The nondestructive testing method for the girth weld of the pipeline as recited in claim 2, wherein:
the cleaning mechanism comprises four groups of driving rollers (4), two ends of each group of driving rollers (4) are rotatably connected with supporting plates, the four groups of driving rollers (4) are respectively connected with the base (1) through the supporting plates, two groups of driving rollers (4) are positioned above the base (1), the other two groups of driving rollers (4) are positioned below the base (1), a driving mesh belt (8) is arranged on the outer side of each group of driving rollers (4), and bristles are connected to the outer side of each driving mesh belt (8);
one end of a group of transmission rollers (4) close to the double-shaft motor (9) is connected with a driven gear (11), the output end of the double-shaft motor (9) is connected with a driving gear (10), and the driven gear (11) is in meshing transmission with the driving gear (10).
4. The nondestructive testing method for the girth weld of the pipeline as recited in claim 3, wherein:
a first hydraulic telescopic rod (12) is fixedly installed on the lower surface of the base (1), the lower end of the first hydraulic telescopic rod (12) is connected with a bottom plate (13), a first return spring (14) is connected between the bottom plate (13) and the base (1), two sides of the bottom plate (13) are bent downwards to form folded plates (28), and an auxiliary roller (15) is rotatably connected between the two groups of folded plates (28);
the lower part of the transverse plate (6) is connected with a second hydraulic telescopic rod (16), the second hydraulic telescopic rod (16) is communicated with the first hydraulic telescopic rod (12) through a liquid guide pipe, and the welding seam detector (7) is connected with the transverse plate (6) through the second hydraulic telescopic rod (16).
5. The nondestructive testing method for the girth weld of the pipeline as recited in claim 4, wherein:
the side of supplementary roller (15) is equipped with lug (17), one side that lug (17) is close to supplementary roller (15) is connected with at least two sets of slide bar (18), the inboard of supplementary roller (15) is equipped with cavity (19) that correspond with slide bar (18), and is two sets of equal sliding connection has piston plate (20) in cavity (19), piston plate (20) with the one end of slide bar (18) is connected, slide bar (18) pass supplementary roller (15) and with supplementary roller (15) sliding contact, communicate air guide hole (29) between adjacent cavity (19), one side of supplementary roller (15) is connected with rotary joint (21), air guide hole (29) with rotary joint (21) intercommunication, rotary joint (21) one side intercommunication has one-way air outlet valve (27), the side-mounting of supplementary roller (15) has one-way admission valve (30), the one-way air inlet valve (30) is communicated to the cavity (19) through an air inlet pipe (31), and a spring used for pushing the piston plate (20) outwards is arranged in the cavity (19);
the lower extreme of second hydraulic stretching pole (16) is connected with first baffle (22), the below of first baffle (22) is equipped with folding gasbag (24), the below of folding gasbag (24) is equipped with second baffle (23), first baffle (22) with be connected with second reset spring (35) between second baffle (23), folding gasbag (24) pass through the air duct with rotary joint (21) intercommunication.
6. The nondestructive testing method for the girth weld of the pipeline as recited in claim 5, wherein:
the side of auxiliary roller (15) is equipped with blowing nozzle (25), blowing nozzle (25) are towards lug (17) one side, install relief valve (26) in cavity (19), blowing nozzle (25) with relief valve (26) intercommunication.
7. The nondestructive testing method for the girth weld of the pipeline as recited in claim 5 or 6, wherein:
the upper surface of first baffle (22) is connected with second magnet (34), the lower surface mounting of diaphragm (6) has first magnet (33) that correspond with second magnet (34), first magnet (33) with adsorb when second magnet (34) are close to, the air duct passes from between first magnet (33) and second magnet (34), compresses tightly when first magnet (33) and second magnet (34) adsorb and closes the air duct.
8. The nondestructive testing method for the girth weld of the pipeline according to any one of claims 3, 4 and 5, wherein:
the bristles are metal bristles.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166195A (en) * | 2022-08-03 | 2022-10-11 | 河北华建检测试验有限责任公司 | Intelligent metal material nondestructive test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166195A (en) * | 2022-08-03 | 2022-10-11 | 河北华建检测试验有限责任公司 | Intelligent metal material nondestructive test equipment |
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