Pulsed eddy current flaw detector

Abstract

The utility model discloses a pulsed eddy current flaw detector, and relates to the technical field of electromagnetic nondestructive testing. The device comprises an adjusting mechanism, the adjusting mechanism comprises an adjusting cavity formed in a fixed seat, the inner wall of the adjusting cavity is rotationally connected with a threaded rod, the top end of the threaded rod extends to the outer portion of the fixed seat and is rotationally connected with the fixed seat, and the top end of the threaded rod is fixedly connected with a rotary knob. And the threaded rod is in threaded connection with an internal threaded block. The height of the probe can be adjusted through the adjusting mechanism, so that the probe can move to the outside of the fixed seat to be in contact with a pipeline during detection so as to detect the pipeline, and the probe can move to the inside of the fixed seat when detection is not needed, so that the protection performance of the probe can be remarkably improved; in a non-detection period, the fixed seat effectively prevents the probe from being collided, scraped, contaminated by dust and eroded by water vapor, so that the damage risk of the probe is greatly reduced, and the service life of the probe is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electromagnetic nondestructive testing technical field, especially, a kind of impulse eddy current flaw detector. BACKGROUND

[0002] Impulse eddy current flaw detection is an advanced nondestructive testing technique, it utilizes alternating magnetic field in probe exciting coil to make the measured conductor generate eddy current, if conductor exists defect, eddy current distribution changes, secondary magnetic field changes are captured by probe, the technique detection sensitivity is high, speed is fast, can non-contact detect a variety of metal materials, widely used in aviation, electric power, petrochemical and other key fields.

[0003] The probe of the existing part impulse eddy current flaw detector is not convenient to be effectively protected during non-detection period, is exposed to the outside for a long time, is vulnerable to collision, scratch, dust contamination and water vapor erosion, so that the probe damage risk can be increased, service life is shortened, and detection result accuracy is also seriously affected due to the decline of probe performance. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of impulse eddy current flaw detector, by being provided with adjusting mechanism, the probe of the existing part impulse eddy current flaw detector is not convenient to be effectively protected during non-detection period Problem.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The utility model is a kind of impulse eddy current flaw detector, including fixed base, adjusting mechanism and fixed mechanism are provided on the fixed base,

[0007] The adjusting mechanism includes adjusting cavity opened in the inside of fixed base, the inner wall of adjusting cavity is rotatably connected with threaded rod, the top end of threaded rod extends to the outside of fixed base and is rotatably connected with fixed base, the top end of threaded rod is fixedly connected with knob, inner thread block is screw-connected on threaded rod, the rear side of inner thread block is fixedly connected with adjusting plate, the bottom of adjusting plate is fixedly connected with connecting barrel, the bottom end of connecting barrel is fixedly connected with probe, probe extends to the outside of fixed base and is slidably connected with fixed base.

[0008] Further, the inner wall of adjusting cavity is fixedly connected with limit rod, limit block is slidably connected on limit rod, and limit block is fixedly connected with adjusting plate.

[0009] Further, the top of fixed base is fixedly connected with flaw detector body, the bottom of flaw detector body is provided with cable, and the end, away from flaw detector body, of cable is fixedly connected with probe.

[0010] Further, the fixing mechanism comprises a fixing cavity formed in the fixing base, an inner top wall of the fixing cavity is fixedly connected with a fixing rod, and a bottom end of the fixing rod is rotatably connected with a gear.

[0011] Further, inner walls of the fixing cavity are fixedly connected with two sliding rods I, two sliding rods I are slidably connected with sliding blocks I, and two sliding rods I are slidably connected with sliding blocks II.

[0012] Further, the sliding block I and the sliding block II are fixedly connected with a gear rack on the side close to each other, the two gear racks are engaged with the gear, an inner bottom wall of the fixing cavity is fixedly connected with an electric push rod, and an output shaft of the electric push rod is fixedly connected with the sliding block I.

[0013] Further, inner walls of the fixing cavity are fixedly connected with a sliding rod II, the sliding rod II is slidably connected with a sliding block III, the sliding block I and the sliding block II are fixedly connected with a connecting plate between the corresponding sliding block III, and bottom portions of the two connecting plates are fixedly connected with moving plates.

[0014] Further, the bottom portion of the fixing base is provided with two sliding grooves, the bottom portions of the two moving plates extend to the outside of the fixing base and are slidably connected with the corresponding sliding grooves, the bottom portions of the two moving plates are fixedly connected with fixing plates, and the sides close to each other of the two fixing plates are fixedly connected with anti-skid pads.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the adjusting mechanism, rotating the knob, the knob drives the threaded rod to rotate when rotating, the threaded rod drives the inner threaded block to move when rotating, the inner threaded block drives the adjusting plate to move when moving, the adjusting plate drives the limiting block to slide on the limiting rod when moving, the adjusting plate drives the connecting cylinder to move when moving, the connecting cylinder drives the probe to move when moving, the height of the probe can be adjusted through the adjusting mechanism, so that the probe can be moved to the outside of the fixing base and contacted with the pipeline when detecting, so as to detect the pipeline, when not needing to detect, the probe can be moved to the inside of the fixing base, and the protection performance of the probe can be significantly improved, the fixing base effectively avoids the probe from being collided, scratched, contaminated by dust and eroded by water vapor in the non-detection period, greatly reduces the damage risk of the probe, and prolongs the service life.

[0017] 2、By setting the fixed mechanism, starting the electric push rod, the electric push rod drives the sliding block 1 to slide, the sliding block 1 drives the rack connected with the sliding block 1 to move when sliding, the rack connected with the sliding block 1 drives the gear to rotate when moving, the gear drives the rack connected with the sliding block 2 to move when rotating, and further drives the sliding block 2 to slide, the sliding block 1 and the sliding block 2 drive the corresponding connecting plate to move when moving, the connecting plate drives the sliding block 3 to slide on the slide rod 2 when moving, the connecting plate drives the moving plate to move when moving, the moving plate drives the fixed plate to move when moving, the fixed mechanism is used for clamping and fixing the pipeline, so that the fixing seat and the flaw detector body can keep relative stability with the pipeline, the stability of the flaw detection operation can be greatly improved, the flaw detector body can be prevented from shaking due to external interference during detection, the probe can be in stable contact with the pipeline, a solid foundation is provided for accurate detection, the equipment versatility can be enhanced, different pipe diameters can be adapted, diversified detection requirements can be met, detection cost can be reduced, detection efficiency can be improved, the fixing seat installation and positioning can be quickly completed, time waste caused by fixing problems can be reduced, and the flaw detection work can be efficiently carried out.

[0018] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is the overall structure schematic diagram of the present application;

[0021] Figure 2 It is the bottom view structure schematic diagram of the present application;

[0022] Figure 3 It is the right view sectional structure schematic diagram of the present application;

[0023] Figure 4 It is the structure schematic diagram of the adjusting plate of the present application;

[0024] Figure 5 It is the structure schematic diagram of the fixed rod of the present application.

[0025] In the drawings, the component list represented by each sign is as follows:

[0026] 1, fixed seat; 2, adjusting mechanism; 3, fixed mechanism; 21, adjusting cavity; 22, threaded rod; 23, knob; 24, internally threaded block; 25, limiting rod; 26, limiting block; 27, adjusting plate; 28, connecting cylinder; 29, probe; 210, flaw detector body; 211, cable; 31, fixed cavity; 32, fixed rod; 33, gear; 34, sliding rod one; 35, sliding block one; 36, sliding block two; 37, rack; 38, electric push rod; 39, sliding rod two; 310, sliding block three; 311, connecting plate; 312, moving plate; 313, sliding groove; 314, fixed plate; 315, non-slip pad. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-5 As shown in the figure, the utility model is a kind of pulse eddy current flaw detector, including fixed seat 1, fixed seat 1 is provided with adjusting mechanism 2 and fixed mechanism 3, adjusting mechanism 2 includes adjusting cavity 21 opened in the inside of fixed seat 1, the inner wall of adjusting cavity 21 is rotatably connected with threaded rod 22, the top of threaded rod 22 extends to the outside of fixed seat 1 and is rotatably connected with fixed seat 1, the top of threaded rod 22 is fixedly connected with knob 23, threaded rod 22 is screw-connected with internally threaded block 24, the rear side of internally threaded block 24 is fixedly connected with adjusting plate 27, the bottom of adjusting plate 27 is fixedly connected with connecting cylinder 28, the bottom end of connecting cylinder 28 is fixedly connected with probe 29, probe 29 extends to the outside of fixed seat 1 and is slidably connected with fixed seat 1, the inner wall of adjusting cavity 21 is fixedly connected with limiting rod 25, limiting rod 25 is slidably connected with limiting block 26, limiting block 26 is fixedly connected with adjusting plate 27, the top of fixed seat 1 is fixedly connected with flaw detector body 210, the bottom of flaw detector body 210 is provided with cable 211, one end of cable 211 away from flaw detector body 210 is fixedly connected with probe 29, the height of probe 29 can be adjusted by adjusting mechanism 2, so that probe 29 can be moved to the outside of fixed seat 1 and contacted with pipeline when detecting, so as to detect pipeline, when not needed to detect, probe 29 can be moved to the inside of fixed seat 1, thereby the protection performance of probe 29 can be significantly improved, in non-detection period, fixed seat 1 effectively avoids that probe 29 suffers from collision, scratching, dust contamination and water vapor erosion, greatly reduces the damage risk of probe 29, prolongs its service life.

[0029] The fixing mechanism 3 comprises a fixing cavity 31 formed in the fixing base 1, the inner top wall of the fixing cavity 31 is fixedly connected with a fixing rod 32, the bottom end of the fixing rod 32 is rotatably connected with a gear 33, the inner wall of the fixing cavity 31 is fixedly connected with two slide rods one 34, the two slide rods one 34 are slidably connected with a sliding block one 35, the two slide rods one 34 are slidably connected with a sliding block two 36, the side close to each other of the sliding block one 35 and the sliding block two 36 is fixedly connected with a rack 37, the two racks 37 are engaged with the gear 33, the inner bottom wall of the fixing cavity 31 is fixedly connected with an electric push rod 38, the output shaft of the electric push rod 38 is fixedly connected with the sliding block one 35, the inner wall of the fixing cavity 31 is fixedly connected with a slide rod two 39, the slide rod two 39 is slidably connected with a sliding block three 310, the sliding block one 35 and the sliding block two 36 are fixedly connected with a connecting plate 311 corresponding to the sliding block three 310, the bottom of the two connecting plates 311 is fixedly connected with a moving plate 312, the bottom of the fixing base 1 is formed with two sliding grooves 313, the bottom of the two moving plates 312 extends to the outside of the fixing base 1 and is slidably connected with the corresponding sliding groove 313, the bottom of the two moving plates 312 is fixedly connected with a fixed plate 314, the side close to each other of the two fixed plates 314 is fixedly connected with a non-slip pad 315, the pipe is clamped and fixed through the fixing mechanism 3, so that the fixing base 1 and the flaw detector body 210 can keep relative stability with the pipe, which can greatly improve the stability of the flaw detection work, ensure that the flaw detector body 210 will not shake due to external interference during detection, make the probe 29 and the pipe stable contact, provide a solid foundation for accurate detection, also can enhance the equipment versatility, can adapt to different pipe diameter pipes, meet the diversified detection needs, reduce the detection cost, also can improve the detection efficiency, quickly complete the fixing base 1 installation positioning, reduce the time waste caused by fixing problem, make the flaw detection work efficiently.

[0030] One specific application of the embodiment is: when the pipeline is detected, the fixed seat 1 is placed on the outer wall of the pipeline, and then the knob 23 is rotated forward. When the knob 23 rotates, the threaded rod 22 rotates, the threaded block 24 moves, the adjusting plate 27 moves, the limiting block 26 slides on the limiting rod 25, the limiting rod 25 and the limiting block 26 make the adjusting plate 27 move more stably, and the rotation of the threaded block 24 is converted into linear motion through the limiting rod 25 and the limiting block 26. When the adjusting plate 27 moves, the connecting cylinder 28 moves, and the probe 29 moves, so that the probe 29 moves downward to the outside of the fixed seat 1 and contacts the outer wall of the pipeline, so as to detect the pipeline. The probe 29 transmits the detection result to the flaw detector body 210 through the cable 211. When the detection is completed, the knob 23 is reversed. The principle is the same as that of the above-mentioned forward rotation of the knob 23. Therefore, when the knob 23 is reversed, the adjusting plate 27 drives the probe 29 to move upward through the connecting cylinder 28, and then the probe 29 moves to the inside of the fixed seat 1, so as to protect the probe 29 from being damaged when not in use. It also enhances the convenience and flexibility of detection operation. When facing different pipe diameters and different installation positions of the pipeline, the height of the probe 29 can be adjusted to quickly and accurately make the probe 29 adhere to the pipeline, so as to realize efficient detection.

[0031] When the pipeline is detected, the fixed seat 1 is placed on the pipeline, the electric push rod 38 is started, the electric push rod 38 drives the sliding block one 35 to slide, the sliding block one 35 drives the rack 37 connected with the sliding block one 35 to move, the rack 37 connected with the sliding block one 35 drives the gear 33 to rotate, the gear 33 drives the rack 37 connected with the sliding block two 36 to move, and then drives the sliding block two 36 to slide. The sliding path of the sliding block one 35 and the sliding block two 36 is guided by the sliding rod one 34. When the sliding block one 35 and the sliding block two 36 move, the corresponding connecting plate 311 moves, the connecting plate 311 moves, the sliding block three 310 slides on the sliding rod two 39, the sliding rod two 39 and the sliding block three 310 make the movement of the connecting plate 311 more stable, the connecting plate 311 moves, the moving plate 312 moves, and the fixed plate 314 moves, so as to clamp and fix the pipeline through the movement of the fixed plate 314, and then stably connect the fixed seat 1 on the outer wall of the pipeline, so as to avoid the shaking of the fixed seat 1 and the flaw detector body 210 during the detection of the pipe, thereby affecting the detection result of the pipeline, and being able to adapt to different diameters of the pipeline within a certain range, thereby improving the flexibility of the device. At the same time, the anti-skid pad 315 avoids the sliding of the fixed plate 314 during clamping the pipeline, so as to affect the clamping effect.

[0032] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that the persons skilled in the art can well understand and utilize the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A pulsed eddy current flaw detector characterized by: Including fixed seat (1), be provided with adjusting mechanism (2) and fixed mechanism (3) on the fixed seat (1); The adjusting mechanism (2) includes adjusting cavity (21) opened in the fixed seat (1), the inner wall of the adjusting cavity (21) is rotatably connected with threaded rod (22), the top end of the threaded rod (22) extends to the outside of the fixed seat (1) and is rotatably connected with the fixed seat (1), the top end of the threaded rod (22) is fixedly connected with knob (23), the threaded rod (22) is threadedly connected with inner threaded block (24), the rear side of the inner threaded block (24) is fixedly connected with adjusting plate (27), the bottom of the adjusting plate (27) is fixedly connected with connecting barrel (28), the bottom end of the connecting barrel (28) is fixedly connected with probe (29), the probe (29) extends to the outside of the fixed seat (1) and is slidably connected with the fixed seat (1).

2. A pulsed eddy current flaw detector according to claim 1, characterized in that, The inner wall of the adjusting cavity (21) is fixedly connected with limit rod (25), the limit rod (25) is slidably connected with limit block (26), and the limit block (26) is fixedly connected with the adjusting plate (27).

3. A pulsed eddy current flaw detector according to claim 2, wherein The top of the fixed seat (1) is fixedly connected with flaw detector body (210), the bottom of the flaw detector body (210) is provided with cable (211), and one end of the cable (211) away from the flaw detector body (210) is fixedly connected with the probe (29).

4. A pulsed eddy current flaw detector according to claim 3, wherein The fixed mechanism (3) includes fixed cavity (31) opened in the fixed seat (1), and the inner top wall of the fixed cavity (31) is fixedly connected with fixed rod (32), and the bottom end of the fixed rod (32) is rotatably connected with gear (33).

5. A pulsed eddy current flaw detector according to claim 4, wherein The inner wall of the fixed cavity (31) is fixedly connected with two slide rods (34), the two slide rods (34) are slidably connected with slide block (35), and the two slide rods (34) are slidably connected with slide block (36).

6. A pulsed eddy current flaw detector according to claim 5, wherein The side of the slide block (35) and the slide block (36) close to each other is fixedly connected with rack (37), the two racks (37) are engaged with the gear (33), the inner bottom wall of the fixed cavity (31) is fixedly connected with electric push rod (38), and the output shaft of the electric push rod (38) is fixedly connected with the slide block (35).

7. A pulsed eddy current flaw detector according to claim 6, wherein The inner wall of the fixed cavity (31) is fixedly connected with slide rod (39), the slide rod (39) is slidably connected with slide block (310), and the slide block (35) and the slide block (36) are fixedly connected with the corresponding slide block (310) through connecting plate (311), and the bottom of the two connecting plates (311) is fixedly connected with moving plate (312).

8. A pulsed eddy current flaw detector according to claim 7, characterized in that The bottom of the two moving plates (312) extends to the outside of the fixed seat (1) and is slidably connected with the corresponding slide groove (313), and the bottom of the two moving plates (312) is fixedly connected with fixed plate (314), and the side of the two fixed plates (314) close to each other is fixedly connected with anti-skid pad (315).

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