CN218727235U

CN218727235U - Pipeline welding seam device of detecting a flaw

Info

Publication number: CN218727235U
Application number: CN202222721531.2U
Authority: CN
Inventors: 刘金生; 张蔚; 田小玉; 蒋睿锴; 张政
Original assignee: Tianke Terry Testing Tianjin Co ltd
Current assignee: Tianke Terry Testing Tianjin Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-03-24
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a pipeline welding seam device of detecting a flaw mainly relates to the nondestructive inspection field. Comprises a clamping mechanism, a guide mechanism and a probe; fixture presss from both sides the dress with the pipeline that awaits measuring and fixes, fixture and guiding mechanism fixed connection, guiding mechanism includes the arc guide rail, the bilateral symmetry of arc guide rail is equipped with the arc spout, be equipped with the arc draw runner rather than sliding fit in the arc spout, the outside terminal surface of arc draw runner exposes the outside at the arc spout, the both ends of arc draw runner are equipped with door type frame respectively, the outside terminal surface at the arc draw runner is fixed to opening one side of door type frame, be equipped with anchor clamps on the door type frame, the probe passes through anchor clamps fixedly. The beneficial effects of the utility model reside in that: can realize relapseing arc to the welding seam fixing on the pipeline and survey.

Description

Pipeline welding seam device of detecting a flaw

Technical Field

The utility model relates to a nondestructive inspection field specifically is a pipeline welding seam device of detecting a flaw.

Background

For the welded part of the pipeline, weld seam detection is required periodically, which is one of the main businesses of nondestructive detection, and mainly adopts sensing equipment to detect cracks or defects inside metal materials or parts. The commonly used flaw detection methods include: x-ray flaw detection, ultrasonic flaw detection, eddy current flaw detection, gamma-ray flaw detection, etc. The method has the advantages that the pipe fitting and the welding seam are not damaged, and the defects of internal cracks, inclusions, air holes, incomplete penetration, incomplete fusion and the like can be screened. Many probes are operated by sliding along the direction of extension of the weld, and for pipes the weld is typically a circumferential loop, requiring repeated inspection around the pipe along the weld. The operation is completed by a worker holding the probe at present, the operation difficulty is high, the encircling cannot be continuously completed, completely coincident repeated routes are difficult to obtain, the detection efficiency is low, and the defect positioning and judging difficulty is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline welding seam device of detecting a flaw, it can be fixing on the pipeline, and the arc that realizes relapseing is surveyed to the welding seam, helps laborsaving and efficient to judge defective position.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a pipeline weld seam flaw detection device comprises a clamping mechanism, a guide mechanism and a probe;

the fixture presss from both sides with the pipeline that awaits measuring and adorns fixedly, fixture and guiding mechanism fixed connection, guiding mechanism includes the arc guide rail, the bilateral symmetry of arc guide rail is equipped with the arc spout, be equipped with in the arc spout rather than sliding fit's arc draw runner, the outside terminal surface of arc draw runner exposes in the outside of arc spout, the both ends of arc draw runner are equipped with door type frame respectively, the outside terminal surface at the arc draw runner is fixed to opening one side of door type frame, be equipped with anchor clamps on the door type frame, the probe passes through anchor clamps fixedly.

The clamping mechanism comprises a first hoop and a second hoop, the first hoop and the second hoop are arc-shaped plate structures which are symmetrically arranged relatively, rubber pads are arranged on inner rings of the first hoop and the second hoop, and locking screws are arranged at two ends of the first hoop and two ends of the second hoop respectively.

The first hoop is fixedly provided with a connecting plate, the length direction of the connecting plate is consistent with the axis direction of the first hoop, and the guide mechanism is fixed on the connecting plate.

The arc guide rail is arc-shaped with radian not less than 180 degrees, the open-ended interval of the arc guide rail is greater than the inner diameter of the inner ring of the first hoop, the arc guide rail and the first hoop are coaxially arranged, the arc chute extends along the direction of the arc guide rail and is also arc-shaped with the first hoop and the same axis.

And the inner side end face, the upper side end face and the lower side end face of the arc-shaped slide bar are respectively provided with a retainer with steel balls.

Contrast prior art, the beneficial effects of the utility model reside in that:

the device can be clamped and fixed on a pipeline to be detected, after the device is fixed close to a welding seam to be detected, the device can be relatively limited with the pipeline, the arc flaw detection stroke at equal intervals along the peripheral surface of the welding seam is obtained through the guide mechanism, the probe can repeatedly scan the welding seam at equal intervals, manual alignment and control are not needed, the operation difficulty and the strength are greatly reduced, and the detection efficiency is improved by quickly determining and rechecking and positioning the position of a suspected defect.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Figure 2 is a front view of figure 1 of the present invention.

Figure 3 is a side view of the present invention of figure 1.

Fig. 4 is a schematic view of the assembly split of the guiding mechanism of the present invention.

The reference numbers shown in the figures:

1. a first hoop; 2. a second hoop; 3. a connecting plate; 4. an arc-shaped guide rail; 5. an arc-shaped chute; 6. an arc-shaped slide bar; 7. a holder; 8. a gantry frame; 9. a transverse plate; 10. a clamp; 11. and (4) installing a shaft.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.

Example (b): pipeline welding seam device of detecting a flaw

During operation, the detection of a welding seam at one end needs to detect flaws for multiple times, the welding seam is roughly passed once, places possibly having problems are marked, then flaws are repeatedly detected on suspected marking points, and if manual control is adopted, the position of each walking is slightly different, so that the accuracy and the efficiency of judging the position of a defect are influenced.

The state of the pipeline also has a great influence, the bottom of the horizontal pipeline is difficult to operate, the circumferential flaw detection operation really examines the operation level of workers very much, a frame bracket with wheels is made in the past, the bracket is held and pressed on the pipeline to walk, the effect is not good, and the pipeline is easy to walk askew. So I through improving, further designed this device:

comprises a clamping mechanism, a guide mechanism and a probe;

the clamping mechanism is used for clamping and fixing the pipeline, so that fixing and positioning are realized, and the device can be kept in an immovable position all the time in detection after being fixed.

Fixture adopts our common staple bolt structure, uses current staple bolt to weld and process the improvement, specifically includes first staple bolt 1 and second staple bolt 2, first staple bolt 1 and second staple bolt 2 are the C type arc plate structure that relative symmetry set up respectively, the inner circle of first staple bolt 1 and second staple bolt 2 is equipped with the rubber pad, increases fixed reliability, and antiskid to avoid the oppression damage to the pipeline.

The two ends of the first hoop 1 and the second hoop 2 are respectively provided with a locking screw, the first hoop 1 and the second hoop 2 can be used for being clamped on a pipeline, and the two ends of the first hoop 1 and the second hoop 2 are locked and fixed through the locking screws.

The first hoop 1 is fixedly provided with a connecting plate 3 through welding, the length direction of the connecting plate 3 is consistent with the axial direction of the first hoop 1, and the guide mechanism is fixed on the connecting plate 3.

The guide mechanism comprises an arc-shaped guide rail 4, the arc-shaped guide rail 4 is fixedly welded on the connecting plate 3, the arc-shaped guide rail 4 is in an arc shape with the radian of 200 degrees and is arranged concentrically with the first hoop 1;

arc-shaped sliding grooves 5 are symmetrically arranged on two sides of the arc-shaped guide rail 4, the arc-shaped sliding grooves 5 extend along the direction of the arc-shaped guide rail 4 and are also arc-shaped with the same axis as the first anchor ear 1, and the cross section of the arc-shaped guide rail 4 forms an I shape through the arc-shaped sliding grooves 5 on the two sides;

the arc-shaped sliding groove is characterized in that an arc-shaped sliding strip 6 in sliding fit with the arc-shaped sliding groove is arranged in the arc-shaped sliding groove 5, retainers 7 are respectively arranged on the inner side end face, the upper side end face and the lower side end face of the arc-shaped sliding strip 6 (namely, other three sides except the outer side end face are all provided), steel balls are matched on the retainers 7 in a rolling mode, the three sides, located in the arc-shaped sliding groove 5, of the arc-shaped sliding strip 6 are matched with the steel balls to roll, the steel balls are matched with the side wall of the sliding groove and the bottom of the sliding groove, and sliding is smooth.

The outside terminal surface of arc draw runner 6 exposes in the outside of arc spout 5, the both ends of arc draw runner 6 are equipped with door type frame 8 respectively, the opening one side of door type frame 8 is fixed and is made to constitute fixed structure between two arc draw runners 6 through door type frame 8 on the outside terminal surface of arc draw runner 6, one side of door type frame 8 is equipped with diaphragm 9, be equipped with anchor clamps 10 on the diaphragm 9, the fixed probe of centre gripping on the anchor clamps 10 to the realization is to the scanning of pipe fitting welding seam.

Anchor ear structure is adopted to anchor clamps 10, including fixing the installation axle 11 on diaphragm 9, install the C type spare hoop that the epaxial articulated is relative of axle 11 to realize locking through the bolt. The clamping of the structure is more flexible, the clamping depth and position can be conveniently adjusted, and the fixing is reliable. Through fixing the probe respectively at both ends, can be through clockwise or anticlockwise rotation arc draw runner 6, let the probe at both ends can be along pipe circumference swing, and the swing range of two probes can cover pipeline a week, just also combine the swing stroke of two probes can cover whole a week length of welding seam, satisfy the scanning requirement.

The probe can be guided by the arc-shaped slide bar 6 to obtain circumferential arc-shaped travel, so that scanning tracks with consistent tracks are obtained on the surface of the pipe fitting, scanning positions are completely consistent, defects can be repeatedly calibrated and detected, and quick positioning and judgment are facilitated.

The using method of the device comprises the steps of clamping the first hoop 1 and the second hoop 2 on the pipeline near the welding line to be measured, fixing the probe on the clamp 10 after fixing, and then pushing the portal frame 8 to enable the probe to scan around the circumferential direction of the welding line. The operation does not need manual work to go to the counterpoint and oppress, and operating personnel only need gently promote door type frame 8, the speed of control probe can, very simple, and novice also can accessible operation. Meanwhile, the obtained arc-shaped scanning strokes are completely consistent, the positions of the defects of the suspicious points can be rapidly determined, rechecked and positioned, and the detection efficiency is improved.

Claims

1. A pipeline weld seam flaw detection device is characterized by comprising a clamping mechanism, a guide mechanism and a probe;

2. The pipeline welding seam flaw detection device of claim 1, wherein the clamping mechanism comprises a first hoop and a second hoop, the first hoop and the second hoop are arc-shaped plate structures which are symmetrically arranged relatively, rubber pads are arranged on inner rings of the first hoop and the second hoop, and locking screws are arranged at two ends of the first hoop and the second hoop respectively.

3. The pipeline weld seam flaw detection device of claim 2, wherein a connecting plate is fixed on the first hoop, the length direction of the connecting plate is consistent with the axial direction of the first hoop, and the guide mechanism is fixed on the connecting plate.

4. The pipeline welding seam flaw detection device of claim 2, wherein the arc-shaped guide rail is arc-shaped with a radian not less than 180 degrees, the distance between the openings of the arc-shaped guide rail is greater than the inner diameter of the inner ring of the first hoop, the arc-shaped guide rail and the first hoop are arranged coaxially, and the arc-shaped chute extends along the direction of the arc-shaped guide rail and is also arc-shaped with the same axis as the first hoop.

5. The pipeline weld seam flaw detection device of claim 1, wherein retainers with steel balls are respectively arranged on the inner side end face, the upper side end face and the lower side end face of the arc-shaped slide bar.