CN209992436U - Eddy nondestructive testing device for small-diameter pipe - Google Patents

Abstract

The utility model discloses an eddy current nondestructive testing device for small-diameter pipes, which relates to the field of eddy current nondestructive testing equipment. The upper side of the placing rack is rotated and provided with a rolling rod, two rolling rods are arranged horizontally and spaced on the placing rack, and the two rolling rods are arranged in parallel to form a placing gap for placing small diameter tubes, and one end of the rolling rod is provided with a The driving device for driving the rotation of the roller is provided with an eddy current detection probe on the probe frame, and the probe is electrically connected with the eddy current detection instrument. The utility model provides an eddy current non-destructive testing device for small-diameter pipes, which is convenient to use, has good stability, wide application range and high measurement accuracy.

Description

An eddy current nondestructive testing device for small diameter pipes

technical field

The utility model relates to the technical field of eddy current nondestructive testing equipment, in particular to a small diameter pipe eddy current nondestructive testing device.

Background technique

Eddy current testing is a non-destructive testing method that uses the principle of electromagnetic induction to non-destructively evaluate certain properties of conductive materials and their workpieces, or to find defects by measuring changes in the induced eddy currents in the tested workpiece. In industrial production, eddy current testing is one of the main means to control various metal materials and a few non-metallic conductive materials such as graphite and carbon fiber composite materials and their product quality, and occupies an important position in the field of non-destructive testing technology.

The utility model patent with the existing patent authorization announcement number CN206696229U discloses an eddy current damage detection device inside a steel pipe, which includes a frame, a workbench, an eddy current damage detector, an automatic detection device and a probe. On the frame, the worktable is provided with a support frame, and the support frame is provided with a lead screw slide rail, and the eddy current tester and the automatic detection device are respectively slidably connected with the lead screw slide rail through connecting pieces, and the The automatic detection device is provided with a probe, and the probe is electrically connected with the eddy current tester.

In actual use, the staff fixes the steel pipe to be tested on the workbench, adjusts the telescopic position of the electric telescopic rod according to the inner diameter of the steel pipe, and adjusts the height of the telescopic link at the same time. The electric telescopic rod pushes the shell to move in the steel pipe, and the servo motor The probe is slowly rotated 360 degrees through the bending connecting shaft, and the probe transmits the detected signal of the inner wall of the steel pipe to the eddy current tester to realize damage detection. However, the probe of the steel pipe damage detection device cannot extend into the small-diameter steel pipe, so that the small-diameter pipe cannot be detected, and there is room for improvement.

Utility model content

In view of the above technical problems, the purpose of this utility model is to provide an eddy current non-destructive testing device for small-diameter pipes, which can realize eddy current testing of the outer circumference of small-diameter pipes by using a set placement table, an eddy current detection probe and an eddy current analyzer.

To achieve the above object, the utility model provides the following technical solutions:

An eddy current nondestructive testing device for small-diameter tubes, comprising a workbench, a placement frame is arranged on the workbench, a probe frame is also arranged on the workbench, an eddy current detector is arranged on one side of the workbench, and the placement frame is A roller bar is rotatably arranged on the side away from the worktable, and a pair of the roller bars is horizontally and spaced apart on the placement rack, and the two roller bars are arranged in parallel to form a placement gap for placing the small diameter pipe;

One end of the roller rod is provided with a driving device for driving the roller rod to rotate around its axial direction, the probe frame is provided with an eddy current detection probe for detecting the small diameter tube to be tested, and the eddy current detection probe is arranged close to the small diameter tube to be tested. The eddy current testing probe is electrically connected to the eddy current testing instrument.

By adopting the above technical solution, in use, the small diameter tube is directly placed on the placing table formed by the two rollers, the driving device drives the two rollers to rotate, thereby driving the small diameter tube to be tested to rotate, and the eddy current detection probe detects the eddy current condition of the small diameter tube. , transmit the collected data to the eddy current tester, and analyze the data through the eddy current tester, so as to realize the non-destructive testing of small diameter pipes.

The utility model is further configured as follows: the same end of the two roller rods is provided with a driven gear, the driving device is a driving motor, the driving motor is provided with a driving gear on the driving shaft, the driving gear is provided with a belt, and the driving gear is It is connected with the driven gear by a belt.

By adopting the above technical solution, the drive motor directly drives the two rollers to rotate in the same direction through the belt, so that the two rollers have the same rotation speed, which ensures the smooth rotation of the small diameter tube on the placing table, and helps to improve the eddy current detection accuracy of the small diameter tube.

The utility model is further provided that: the probe frame is slidably arranged on the workbench along the length direction of the roller rod, and the eddy current detection probe is detachably fixed on the probe frame.

By adopting the above technical solution, the probe frame can slide along the length direction of the roller, so that the eddy current detection probe can detect the circumference of the small diameter pipe and the length direction of the small diameter pipe at the same time, which is helpful to improve the eddy current detection of the small diameter pipe precision.

The utility model is further provided as follows: the worktable is provided with a screw slide rail on one side of the placing rack, and the screw slide rail is arranged along the length direction of the roller;

The screw slide rail includes a screw rod that is rotatably arranged along its length direction; the probe frame includes a support base, the support base is slidably arranged on the screw rod slide rail, and the screw rod passes through the support base, and It is threadedly connected with the support seat; one side of the lead screw slide rail is also provided with a bidirectional drive motor for driving the lead screw to rotate.

By adopting the above technical solution, using the provided lead screw slide rail and bidirectional drive motor, during work, the staff can start the two-way drive motor to drive the lead screw to rotate, thereby driving the support base to slide along the length direction of the lead screw slide rail. The convenience and movement stability of the eddy current non-destructive testing device for small diameter pipes are greatly improved.

The utility model is further configured as follows: the probe frame comprises a vertically arranged sliding column, a sliding frame is vertically slidable on the sliding column, and the eddy current detection probe is detachably fixed on the sliding frame.

By adopting the above technical solution, the staff can adjust the eddy current detection probe up and down through the sliding frame during work, so as to adapt to the detection of small diameter pipes of different specifications, which helps to improve the application range of eddy current detection of small diameter pipes.

The utility model is further configured as follows: the sliding frame includes a support frame, a side of the support frame close to the workbench is horizontally provided with a sliding cylinder, the sliding cylinder is provided with a through hole, and the sliding column passes through the through hole It forms a sliding fit with the supporting frame, and the sliding frame is provided with a fastener for fixing the sliding cylinder.

By adopting the above technical solution, the sliding column is penetrated with through holes to make the sliding frame slide up and down and set on the sliding column, and then the sliding cylinder is fixed on the sliding cylinder through fasteners, so as to further realize the eddy current detection probe on the probe frame. The lifting operation helps to ensure the normal adjustment of the height of the eddy current detection probe by the staff, and at the same time helps to ensure the stability of the sliding frame sliding on the probe frame.

The utility model is further provided that: the fastener is an adjusting rod, the sliding cylinder is provided with an adjusting hole along the length direction thereof, the adjusting hole is communicated with the through hole, and the adjusting rod is threadedly arranged in the adjusting hole.

By adopting the above technical solution, by directly tightening the adjusting rod, the end of the adjusting rod close to the sliding column is pressed against the sliding column, so as to realize the fixing of the sliding frame on the sliding column, and loosening the adjusting rod, the sliding frame can be moved up and down to adjust the sliding frame. Through the arrangement of the fastener, the convenience of adjusting the sliding frame is greatly improved.

The utility model is further configured as follows: the support frame includes a support rod, and an adjustment plate is horizontally provided at one end of the support rod away from the workbench, the adjustment plate is provided with a waist-shaped groove, and the waist-shaped groove is along the length of the adjustment plate The eddy current detection probe is detachably arranged on the adjustment plate through bolts.

By adopting the above technical solution, the eddy current detection probe is set at the designated position in the length direction of the waist groove, so that the staff can directly adjust the distance between the eddy current detection probe and the small diameter tube to be tested in this way, which is helpful to improve the sensitivity of the eddy current detection of the small diameter tube. , to reduce the influence of the lift-off effect of the eddy current.

The utility model is further provided as follows: the rolling rod is covered with a non-slip covering layer.

By adopting the above technical solution, by covering the roller rod with a non-slip sleeve, the possibility of slippage of the small-diameter tube to be tested during the placement interval can be reduced, which is helpful to improve the stability of the eddy current detection signal of the small-diameter tube, and is conducive to the detection of small-diameter tubes. accurate positioning of the tube.

The utility model is further configured as follows: the placing rack includes two vertical and spaced-apart support bases, the two support bases are symmetrically arranged, and a stable cross bar is horizontally arranged between the two support bases.

By adopting the above technical solution, a stable cross bar is arranged on the placement rack, so that the overall structure of the placement rack is more stable, which helps to improve the stability of the placement rack during use.

To sum up, the utility model has the following beneficial effects:

1. Using the placement interval formed by the two rollers, as well as the setting of the probe holder, the eddy current detection probe and the eddy current detector, the small diameter tube can be directly placed in the placement gap to realize the eddy current non-destructive testing of the small diameter tube;

2. Use the sliding setting of the support seat on the screw slide rail and the sliding setting of the sliding frame on the sliding column, so that the eddy current detection probe can be detected along the length of the small diameter tube, and the eddy current detection probe can be directly facing different Specifications of small diameter tubes, expand the scope of application of the detection device, and greatly improve the eddy current detection accuracy of small diameter tubes;

3. The two-way drive motor and adjustment rod are used to make the probe frame slide at a constant speed along the screw slide rail, and at the same time, it is more convenient for the staff to adjust the sliding frame up and down, which greatly improves the convenience and stability of the small diameter tube eddy current nondestructive testing device. .

Description of drawings

Fig. 1 is the overall axonometric schematic diagram of an embodiment of the present utility model;

2 is a schematic diagram of an overall axonometric view from another perspective of an embodiment of the present invention;

3 is a schematic structural diagram of a probe holder according to an embodiment of the present invention.

Reference numerals: 1. Workbench; 2. Placing rack; 21. Support seat; 3. Stabilizing cross bar; 4. Rolling bar; 41. Driven gear; 42. Placement clearance; 5. Drive motor; ;52, belt; 6, anti-skid layer; 7, eddy current detector; 8, lead screw slide rail; 81, lead screw; 82, guide rail; 9, probe holder; 91, support base; 911, chute; 92, Sliding column; 10, sliding frame; 100, supporting frame; 101, supporting rod; 102, sliding cylinder; 103, through hole; 104, adjusting hole; 105, adjusting rod; 11, adjusting plate; 12, waist groove; 13. Eddy current detection probe; 14. Bidirectional drive motor.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to Figures 1-2, a small diameter tube eddy current nondestructive testing device includes a workbench 1, the workbench 1 is arranged in a rectangular shape as a whole, and a placement rack 2 is fixed on one side of the workbench 1 in the width direction. The placing rack 2 includes support bases 21 , and the support bases 21 are symmetrically arranged in two groups along the length direction of the workbench 1 . A stable cross bar 3 is horizontally arranged between the two support bases 21 , and both ends of the stable cross rod 3 are respectively fixed on the support base 21 by bolts.

As shown in FIG. 1 , the end of the support base 21 away from the workbench 1 is horizontally provided with roller rods 4 , and two roller rods 4 are arranged at the same height interval. And a placement gap 42 for placing the small-diameter tube is formed between the two rollers 4 .

In order to prevent the small-diameter tube from slipping in the placement gap 42, an anti-skid layer 6 is sleeved outside the two roller bars 4,

Preferably, the anti-skid layer 6 is made of rubber. A drive device is fixed on one side of the two roller bars 4 in the length direction, and the drive device is connected with the two roller bars 4 .

One end of the two rollers 4 in the length direction is fixed with a driving device, and the driving device is connected with the two rollers 4 for driving the two rollers 4 to rotate around their axial directions.

In detail, as shown in FIG. 1, a driven gear 41 is fixed at one end of the two rollers 4 close to the driving device; the driving device is a driving motor 5, and a driving gear 51 is fixed on the output shaft of the driving motor 5; A belt 52 is provided, and the belt 52 is connected with the two driven gears 41 to constitute the transmission of the belt 52 . The drive motor 5 drives the two rollers to rotate at the same speed and in the same direction through the transmission of the belt 52 , so as to improve the stability of the rotation of the two rollers 4 .

An eddy current detector 7 is provided on one side of the worktable 1 , and the eddy current detector 7 can refer to the principle of the eddy current flaw detector in the publication number CN206696229U. A probe holder 9 is arranged on one side in the width direction of the placing frame 2 , and an eddy current detection probe 13 is arranged on the probe holder 9 , and the eddy current detection probe 13 is electrically connected to the eddy current detector 7 . In the actual working process, the small diameter tube to be tested is placed on the placement gap 42, the driving device is activated, the roller 4 is driven to rotate, and the small diameter tube is driven to rotate, the eddy current condition of the small diameter tube is detected by the eddy current detection probe 13, and the collected data is transmitted. Go to the eddy current tester 7 for analysis to achieve non-destructive testing of small diameter pipes.

A lead screw slide rail 8 is fixed on one side of the placement rack 2 , and the lead screw slide rail 8 is arranged along the length of the roller rod 4 . The screw slide rail 8 includes a screw rod 81 rotatably arranged along its length direction, and a guide rail 82 integrally formed on its base, and the guide rail 82 is arranged along the length direction of the screw rod slide rail 8 . The probe holder 9 includes a support base 91 , and the bottom of the support base 91 is provided with a chute 911 . The support base 91 is embedded on the guide rail 82 through the sliding groove 911 to form a sliding arrangement; A two-way drive motor 14 is fixed on one side of the lead screw slide rail 8 in the length direction, and the drive shaft of the two-way drive motor 14 is fixedly connected with the lead screw 81 .

Referring to FIG. 3 , a sliding column 92 is vertically fixed on the support base 91 , and a sliding frame 10 is slidably arranged on the sliding column 92 . The sliding frame 10 includes a support frame 100, the support frame 100 includes a support rod 101, and the upper end of the support rod 101 is bent to form a horizontal cross bar. A sliding cylinder 102 is horizontally fixed on the lower side of the supporting rod 101 , and two sets of sliding cylinders 102 are arranged at intervals along the vertical direction of the supporting rod 101 . Through holes 103 are formed through the two sliding cylinders 102 along the vertical direction, and the sliding column 92 is pierced through the two through holes 103 to form a sliding fit with the sliding cylinders 102 . Adjusting holes 104 are provided on the end surfaces of the two sliding cylinders 102 close to the support rod 101. The adjusting holes 104 are connected with the through holes 103 along the length direction of the sliding cylinders 102. The adjusting rods 105 are threadedly connected to the adjusting holes 104, which can be adjusted by tightening or loosening. The rod 105 is used to adjust the fixed or up and down movement of the carriage 10 .

An adjusting plate 11 is fixed on the upper side of the horizontal cross bar, and the adjusting plate 11 is fixed on one end of the horizontal cross bar away from the support bar 101 . A waist-shaped groove 12 is formed on the adjusting plate 11 along its length direction. Eddy current detection probes 13 are horizontally fixed in the waist-shaped grooves 12 on the adjustment plate 11 by bolts, and the eddy current detection probes 13 are arranged vertically on the horizontal plane of the adjustment plate 11 . The frame body of the eddy current detection probe 13 is made of wood material.

The working principle of this embodiment is:

In actual use, the staff places the small diameter tube to be tested in the placement gap 42, and then adjusts the position of the eddy current detection probe 13 in the waist-shaped groove 12 of the adjustment plate 11 to determine the distance between the eddy current detection probe 13 and the small diameter tube to be tested; Then adjust the eddy current detection probe 13 to a specified height by sliding up and down the adjustment rod 105; finally turn on the switch, so that the rolling rod 4 drives the small diameter tube to be tested to rotate, and simultaneously makes the two-way drive motor 14 drive the eddy current detection probe 13 to move along the length of the small diameter tube; Data analysis is performed by the eddy current tester 7, so as to realize the non-destructive testing of small diameter pipes.

This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but as long as the utility model is used in the present invention All new types of claims are protected by the patent law.

Claims (10)

1. A small-diameter pipe eddy current nondestructive testing device comprises a workbench (1), wherein a placing rack (2) is arranged on the workbench (1), a probe frame (9) is further arranged on the workbench (1), and an eddy current detector (7) is arranged on one side of the workbench (1), and the small-diameter pipe eddy current nondestructive testing device is characterized in that rolling rods (4) are rotatably arranged on one side, away from the workbench (1), of the placing rack (2), the rolling rods (4) are horizontally arranged on the placing rack (2) at intervals, and the two rolling rods (4) are arranged in parallel to form a placing gap (42) for placing a small-diameter pipe;

roll pole (4) one end and be equipped with and be used for driving roll pole (4) around its axial pivoted drive arrangement, be provided with eddy current test probe (13) that are used for detecting the path pipe that awaits measuring on probe frame (9), eddy current test probe (13) set up the position near the path pipe that awaits measuring, eddy current test probe (13) and eddy current detector (7) electric connection.

2. The eddy current nondestructive testing device for the small diameter pipe according to claim 1, wherein the two rolling rods (4) are provided with a driven gear (41) at the same end, the driving device is a driving motor (5), a driving shaft of the driving motor (5) is provided with a driving gear (51), a belt (52) is provided on the driving gear (51), and the driving gear (51) is connected with the driven gear (41) through the belt (52).

3. The small-diameter tube eddy current nondestructive testing device as set forth in claim 1, wherein the probe holder (9) is slidably arranged on the workbench (1) along the length direction of the rolling rod (4), and the eddy current testing probe (13) is detachably fixed on the probe holder (9).

4. The eddy current nondestructive testing device for the small-diameter tube according to claim 3 is characterized in that a screw rod slide rail (8) is arranged on the workbench (1) at one side of the placing rack (2), and the screw rod slide rail (8) is arranged along the length direction of the rolling rod (4);

the screw rod slide rail (8) comprises a screw rod (81) which is rotatably arranged along the length direction of the screw rod slide rail; the probe frame (9) comprises a supporting base (91), the supporting base (91) is arranged on the screw rod slide rail (8) in a sliding mode, the screw rod (81) penetrates through the supporting base (91) and is in threaded connection with the supporting base (91); and a bidirectional driving motor (14) for driving the screw rod (81) to rotate is further arranged on one side of the screw rod sliding rail (8).

5. The small-diameter tube eddy current nondestructive testing device as set forth in claim 1, wherein the probe holder (9) comprises a vertically arranged slide column (92), a sliding holder (10) is vertically arranged on the slide column (92) in a sliding manner, and the eddy current testing probe (13) is detachably fixed on the sliding holder (10).

6. The small-diameter pipe eddy current nondestructive testing device according to claim 5, wherein the sliding frame (10) comprises a support frame (100), a sliding barrel (102) is horizontally arranged on one side of the support frame (100) close to the workbench (1), a through hole (103) is formed in the sliding barrel (102), the sliding column (92) penetrates through the through hole (103) to form sliding fit with the support frame (100), and a fastener for fixing the sliding barrel (102) is arranged on the sliding frame (10).

7. The eddy current nondestructive testing device for the small-diameter pipe according to claim 6, wherein the fastener is an adjusting rod (105), the sliding barrel (102) is provided with an adjusting hole (104) along a length direction thereof, the adjusting hole (104) is communicated with the through hole (103), and the adjusting rod (105) is threadedly arranged in the adjusting hole (104).

8. The small-diameter pipe eddy current nondestructive testing device according to claim 6, wherein the supporting frame (100) comprises a supporting rod (101), an adjusting plate (11) is horizontally arranged at one end of the supporting rod (101) far away from the workbench (1), a waist-shaped groove (12) is formed in the adjusting plate (11), the waist-shaped groove (12) is formed in the length direction of the adjusting plate (11), and the eddy current testing probe (13) is detachably arranged on the adjusting plate (11) through a bolt.

9. The eddy current nondestructive testing device for the small-diameter pipe according to claim 1, wherein the rolling rod (4) is sleeved with an anti-slip sleeve layer.

10. The eddy current nondestructive testing device for the small-diameter pipe according to claim 1, wherein the placing rack (2) comprises two vertical supporting seats (21) arranged at intervals, the two supporting seats (21) are symmetrically arranged, and the stabilizing cross bar (3) is horizontally arranged between the two supporting seats (21).

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