Pulsed eddy current demonstration tool

Abstract

The utility model discloses a pulsed eddy current demonstration tool, and relates to the technical field of steel pipe defect detection. A through hole for supporting a steel pipe is formed in the middle of the pedestal, and a horizontal plate body for supporting a pulsed eddy current detection probe is arranged above the pedestal; two clamping seats for clamping a plate body are symmetrically arranged on the upper side of the pedestal in a sliding mode, the opposite side faces of the two clamping seats are stepped faces, and elastic pieces are arranged between the back sides of the two clamping seats and the pedestal. According to the utility model, the pedestal with the through hole is used for conveniently supporting the steel pipe, the pedestal is provided with the clamping seat which is supported by the elastic piece and is used for clamping the plate body, the pulsed eddy current detection probe moves along the plate body to carry out defect detection demonstration on the steel pipe, and the clamping seat is provided with the step surface, so that the plate body can be clamped at different heights, and the lifting distance of the pulsed eddy current detection probe can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe defect detection, in particular to a pulse eddy current demonstration tooling. Background Art

[0002] The pulsed eddy current equipment uses an induction coil to generate an alternating magnetic field. When the magnetic field senses defects in the steel pipe, eddy currents are generated. The defects of the steel pipe are judged by detecting the changes in the eddy currents. The utility model patent with publication number CN216815337U is a pulsed eddy current lift-off distance test bench, which can detect defects in the object under test, and the lift-off distance can be adjusted; but it is only suitable for plate-like steel that can be placed inside the bench, and there are many inconveniences when performing defect detection on steel pipes; therefore, a pulsed eddy current demonstration tooling suitable for a steel pipe pulsed eddy current detection demonstration test is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a pulse eddy current demonstration tool in order to solve the above-mentioned problems in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The pulse eddy current demonstration tooling comprises a pedestal; a through hole for supporting a steel pipe is provided in the middle of the pedestal, and a horizontal plate for supporting a pulse eddy current detection probe is provided above the pedestal; two clamping seats for clamping the plate bodies are symmetrically and slidably provided on the upper side of the pedestal, and the opposite sides of the two clamping seats are both stepped surfaces, and elastic parts are provided between the back sides of the two clamping seats and the pedestal.

[0006] Furthermore, the through hole is a circular hole.

[0007] Furthermore, the plate body is an acrylic plate.

[0008] Furthermore, there are two pedestals, which are respectively located at two ends of the steel pipe.

[0009] Furthermore, a groove is provided on the upper side of the pedestal, and the two clamping seats slide linearly along the inner side of the groove; and the elastic member is connected between the clamping seats and the ends of the groove.

[0010] Furthermore, a guide rod is provided in the groove, the guide rod passes through two clamping seats, and the clamping seats are slidably matched with the guide rod.

[0011] Furthermore, the elastic member is a coil spring.

[0012] Furthermore, a gear is rotatably mounted on the upper side of the pedestal; racks are connected to the lower sides of the two clamping seats, and the racks connected to the two clamping seats are parallel to each other and respectively meshed with the two sides of the gear.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model utilizes a pedestal with a through hole to conveniently support a steel pipe. The pedestal is provided with a clamping seat supported by an elastic member and clamping a plate body. The pulse eddy current detection probe moves along the plate body to perform defect detection demonstration on the steel pipe. The clamping seat has a stepped surface and can clamp the plate body at different heights to achieve adjustment of the lifting distance of the pulse eddy current detection probe.

[0015] The utility model uses the meshing structure of the gear and the rack to make the two sliding clamping seats move away from or close to each other synchronously, and always clamps the plate body just above the steel pipe, so as to ensure that the pulse eddy current detection probe can accurately perform demonstration detection on the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model from a first viewing angle.

[0017] Figure 2 It is a stereoscopic schematic diagram of the utility model from a second viewing angle.

[0018] Figure 3 It is a three-dimensional schematic diagram of the pedestal connection structure of the utility model.

[0019] Figure 4 It is a top view schematic diagram of the pedestal connection structure of the utility model.

[0020] Figure 5 It is a schematic diagram of the internal structure of the groove of the utility model.

[0021] Figure 6 It is a three-dimensional schematic diagram of the clamp seat connection structure of the utility model.

[0022] In the figure: 1, base; 2, through hole; 3, plate body; 4, clamping seat; 401, stepped surface; 5, elastic member; 6, groove; 7, guide rod; 8, gear; 9, rack; 10, steel pipe; 11, pulse eddy current detection probe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The present invention is further described in detail below in conjunction with the embodiments.

[0027] Specific embodiments of the pulse eddy current demonstration tooling provided by the utility model:

[0028] In this embodiment, the pulsed eddy current demonstration tool is used for the test demonstration of the steel pipe 10 detection, such as Figure 1 and Figure 2 As shown, the steel pipe 10 in this embodiment is a steel pipe 10 with various defects for the convenience of demonstration test. In some embodiments, this tool can also be used in actual detection.

[0029] See also Figure 1-6 The pulsed eddy current demonstration tooling includes a pedestal 1; a through hole 2 for supporting a steel pipe 10 is provided in the middle of the pedestal 1. In this embodiment, the steel pipe 10 is circular in shape, and the through hole 2 is a circular hole. There are two pedestals 1, and the two ends of the steel pipe 10 extend into the through holes 2 of the two pedestals 1 respectively. The pedestals 1 support the ends of the steel pipe 10, and the steel pipe 10 can rotate in the through hole 2 to demonstrate and detect defects on the surface of the steel pipe 10 in all directions.

[0030] A horizontal plate body 3 supporting the pulsed eddy current detection probe 11 is provided above the pedestal 1; there is one plate body 3, and in this embodiment, the plate body 3 is an acrylic plate; two pedestals 1 are respectively located under the two ends of the plate body 3. The pulsed eddy current detection probe 11 is placed on the upper side of the plate body 3, so that the pulsed eddy current detection probe 11 moves along the plate body 3 for detection, and a relatively stable lifting distance can be maintained.

[0031] In this embodiment, grooves 6 are provided on the upper side of the pedestal 1. The two clamping seats 4 are connected in a linear sliding manner in the groove 6, and the clamping seats 4 slide along the groove 6. The sliding direction of the clamping seats 4, that is, the extension direction of the groove 6, is perpendicular to the projection of the center line direction of the steel pipe 10 on the same horizontal plane. The two clamping seats 4 are symmetrically arranged about the median vertical plane of the groove 6, and the opposite sides of the two clamping seats 4 are both stepped surfaces 401. The stepped surfaces 401 make the distance between the two clamping seats 4 increase from bottom to top, step by step; the stepped surfaces 401 of the two clamping seats 4 clamp the plate body 3 at different positions, and can clamp the plate body 3 at different heights, that is, at different distances from the steel pipe 10, thereby changing the lifting distance during demonstration and detection.

[0032] In order to ensure the sliding stability of the clamp seat 4, a guide rod 7 is fixed in the groove 6. The guide rod 7 passes through the bottom of the two clamp seats 4. The clamp seat 4 slides in contact with the guide rod 7. In this way, the outer side of the clamp seat 4 slides in contact with the groove 6. The guide rod 7 limits the sliding of the clamp seat 4 at the center of the bottom of the clamp seat 4, so that the clamp seat 4 can slide stably in a straight line.

[0033] On the pedestal 1, elastic members 5 are provided between the back sides of the two clamping seats 4 and the pedestal 1. Specifically, the elastic members 5 are connected between the clamping seats 4 and the inner sides of the ends of the grooves 6. In this embodiment, the elastic member 5 is a coil spring, which is sleeved on the outside of the guide rod 7. The coil spring brings the two clamping seats 4 closer to each other, so that the clamping seats 4 are tightly clamped on both sides of the ends of the plate body 3. While the clamping seats 4 support the lower side of the plate body 3, the side clamping effect can prevent the movement of the plate body 3, so that when the pulsed eddy current detection probe 11 slides on the plate body 3, the plate body 3 will not be dislocated.

[0034] A gear 8 is installed horizontally and rotatably on the upper side of the pedestal 1, that is, on the upper side of the bottom of the groove 6; the lower sides of the two clamping seats 4 in the groove 6 of the pedestal 1 are connected to racks 9, and the racks 9 connected to the two clamping seats 4 are parallel to each other and meshed with the two sides of the gear 8 respectively. The meshing structure of the gear 8 and the rack 9 allows the two clamping seats 4 in the groove 6 to move away from or close to each other synchronously, and the center of the line between the two clamping seats 4 corresponds vertically to the center of the through hole 2, so that the center of the plate body 3 can always correspond vertically to the center of the steel pipe 10, thereby facilitating the pulse eddy current detection probe 11 to accurately detect and demonstrate the steel pipe 10.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pulsed eddy current demonstration tool, comprising a base (1); characterized in that: The pedestal (1) is provided with a through hole (2) in the middle thereof for supporting the steel pipe (10), and a horizontal plate (3) for supporting the pulsed eddy current detection probe (11) is provided above the pedestal (1); two clamping seats (4) for clamping the plate (3) are symmetrically and slidably provided on the upper side of the pedestal (1), and the opposite sides of the two clamping seats (4) are both stepped surfaces (401), and elastic members (5) are provided between the back sides of the two clamping seats (4) and the pedestal (1).

2. The pulsed eddy current demonstration tooling according to claim 1, characterized in that: The through hole (2) is a circular hole.

3. The pulsed eddy current demonstration tooling according to claim 1, characterized in that: The plate body (3) is an acrylic plate.

4. The pulsed eddy current demonstration tooling according to claim 1, characterized in that: The number of the pedestals (1) is two, and the two pedestals (1) are respectively located at two ends of the steel pipe (10).

5. The pulsed eddy current demonstration tooling according to claim 1, characterized in that: A groove (6) is provided on the upper side of the pedestal (1), and the two clamping seats (4) both slide linearly along the inner side of the groove (6); the elastic member (5) is connected between the ends of the clamping seats (4) and the groove (6).

6. The pulsed eddy current demonstration tooling according to claim 5, characterized in that: A guide rod (7) is provided in the groove (6), the guide rod (7) passes through the two clamping seats (4), and the clamping seats (4) are slidably matched with the guide rod (7).

7. The pulsed eddy current demonstration tooling according to claim 1, 5 or 6, characterized in that: The elastic member (5) is a coil spring.

8. The pulsed eddy current demonstration tooling according to claim 1, 5 or 6, characterized in that: A gear (8) is rotatably mounted on the upper side of the pedestal (1); racks (9) are connected to the lower sides of the two clamping seats (4); the racks (9) connected to the two clamping seats (4) are parallel to each other and are respectively meshed with the two sides of the gear (8).

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