Full-automatic composite tube eddy current detection device

Abstract

The utility model relates to a full-automatic composite tube eddy current detection device, which comprises a probe detection end and a workbench, the rear end of the probe detection end is connected with a guide rod, the workbench is provided with an adjusting device for adjusting the guide rod, the probe detection end comprises a carrier and a connecting plate, the rear end of the carrier is fixedly connected with the guide rod, and the connecting plate is fixedly connected with the carrier. The front end of the carrier is in transmission connection with a connecting plate through a lifting assembly, an arc-shaped assembling assembly is mounted on the outer side of the connecting plate, and a plurality of probes are uniformly mounted in the assembling assembly through springs and are arranged in an arc shape; a wire harness disperser is installed in the carrier, the rear end of the wire harness disperser is connected with a plug, and the front end of the wire harness disperser is connected with the probe through a cable. According to the scheme, the number of the probes is large, the probes are arranged on the assembling assembly in an arc shape, when the probes extend into the composite pipe, the composite pipe with the diameter of 610 mm is subjected to six times of indexing, detection can be completed, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of eddy current detection, in particular to a full-automatic composite pipe eddy current detection device. Background Art

[0002] Common composite pipes have a diameter of φ168-φ610mm, a length of 8m-12.7m, and an inner liner wall thickness of 2.5mm-6mm. When in use, they are welded after splicing according to the on-site installation requirements. Eddy current testing is mainly used to detect defects in the welding parts and the inner and outer walls of the composite pipe liner. In simple terms, it is used to detect the base material and welds of the composite pipe.

[0003] In the prior art, when eddy current testing is performed on composite pipes, a single probe is used to detect welds. The probe has a narrow coverage area and can only meet the requirements of detecting welds. When the inner and outer walls of the composite pipe are not flat during the forward testing, friction between the probe and the testing surface will occur, shortening the life of the probe and causing economic losses to customers. Utility Model Content

[0004] The utility model aims to provide a fully automatic composite pipe eddy current detection device to solve the problems encountered in the above-mentioned background technology.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A fully automatic composite pipe eddy current detection device comprises a probe detection end and a workbench, wherein the rear end of the probe detection end is connected to a guide rod, and an adjustment device for adjusting the guide rod is installed on the workbench. The probe detection end comprises a carrier and a connecting plate, wherein the rear end of the carrier is fixedly connected to the guide rod, and the front end of the carrier is transmission-connected to the connecting plate through a lifting assembly, and an arc-shaped assembly assembly is installed on the outer side of the connecting plate, wherein a plurality of probes are evenly installed in the assembly assembly through springs and arranged in an arc shape; a wire harness disperser is installed inside the carrier, wherein the rear end of the wire harness disperser is connected to a plug, and the front end of the wire harness disperser is connected to the probe through a cable.

[0007] In the above solution, a support wheel is installed at the bottom of the carrier, and the outer side of the upper support frame of the support wheel is flush with the outer surface of the carrier.

[0008] In the above scheme, only one group of the assembly components is provided on the outer side of the connecting plate, and multiple groups of the assembly components of different models are fixed together separately during installation. The assembly components include a mounting seat, which is an arc-shaped structure, and its two sides are mounted on the outer side of the connecting plate by fixing screws. The mounting seat is evenly provided with mounting grooves, and the probe is installed in the mounting grooves by a floating spring. As a preferred scheme, a resting platform is provided on one side of the probe, and the lower part of the floating spring rests on the resting platform, and an anti-wear sheet is provided at the bottom of the probe.

[0009] Furthermore, a bracket is provided on the outer side of the connecting plate, and an induction switch is installed on the bracket for sensing the depth of the composite pipe.

[0010] Among them, the adjusting device includes a support plate and a clamping claw. The bottom of the support plate is fixed on the workbench. A lead screw is provided in the middle inner side of the support plate. The outward rotation of the lead screw is connected to a nut mounting seat. The outer side of the nut mounting seat is fixedly connected to the clamping claw. The inner side of the nut mounting seat is slidably connected to the support plate through a guide assembly. A servo motor for driving the lead screw to rotate is also installed on the outer side of the support plate.

[0011] In one embodiment, the above scheme further includes a rotating device, which is used to support the composite pipe and drive the composite pipe to rotate. The rotating device includes a cabinet and a base, a table is provided on the top of the cabinet, a linear guide rail is provided on the top of the table that is horizontally movable with the base, and rollers are rotatably connected to both sides of the top of the base through bearing seats.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the number of probes in this solution is large and they are arranged in an arc shape on the assembly component. When inserted into the interior of the composite pipe, a 610mm diameter composite pipe can be inspected after 6 divisions, and the work efficiency is high. In addition, the several single probes evenly installed in this solution, each probe is installed in the installation groove, and is equipped with a floating spring for floating, and an anti-wear sheet is inlaid on the end face of the probe, so that the probe can be protected to the maximum extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the regulating device in the utility model;

[0016] Figure 3 It is a structural schematic diagram of the probe detection end in the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0018] Figure 5 It is a schematic diagram of the internal structure of the assembly components in the utility model;

[0019] Figure 6This is a schematic diagram of the structure of the assembly component of the utility model after removing the outer mounting seat;

[0020] Figure 7 It is a bottom view of the assembly components in the utility model;

[0021] Figure 8 It is a schematic diagram of the structure when the assembly component of the utility model is in the middle;

[0022] Fig. 9 It is a schematic diagram of the utility model when working;

[0023] Fig.10 It is a structural schematic diagram of the rotating device in the utility model.

[0024] Numbers in the figure: 1-probe detection end; 11-guide rod; 12-carrier; 13-support wheel; 14-plug; 15-connecting plate; 16-assembly component; 161-mounting seat; 162-mounting slot; 163-fixing screw; 164-floating spring; 165-bracket; 17-lifting assembly; 18-wiring harness disperser; 19-probe; 2-workbench; 21-adjusting device; 22-support plate; 23-screw; 24-nut mounting seat; 25-clamp; 26-guide assembly; 3-rotating device; 31-cabinet; 32-linear guide; 33-bearing seat; 34-roller; 35-base. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0026] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0027] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Embodiment 1, as Figure 1 and Figure 2As shown, a fully automatic composite pipe eddy current testing device is used to detect the longitudinal weld of the composite pipe and the inner surface of the pipe body. 100% of the parent material is tested by eddy current, wherein the movement of the pipe body and the probe 19 should make the inspection cover the entire weld. Through the composite pipe eddy current testing, surface crack defects (including the inner and outer surfaces of the liner) and embedded defects can be detected.

[0029] The fully automatic composite pipe eddy current detection device comprises a probe detection end 1 and a workbench 2. The rear end of the probe detection end 1 is fixedly connected with a guide rod 11, both of which are on the same axis. An adjustment device 21 for adjusting the guide rod 11 is installed on the workbench 2, which is used to adjust the upper and lower height positions of the guide rod 11, so that during eddy current detection, it is matched with the placed composite pipe to perform eddy current detection on the inner and outer walls.

[0030] The adjusting device 21 includes a support plate 22 and a clamping jaw 25. The bottom of the support plate 22 is fixed on the workbench 2. A lead screw 23 is provided in the middle of the inner side of the support plate 22. The lead screw 23 is connected to a nut mounting seat 24 for rotation, forming a lead screw nut mechanism. The outer side of the nut mounting seat 24 is fixedly connected to the clamping jaw 25. The clamping jaw 25 is a working surface of two upper and lower semicircular structures, which is used to clamp the guide rod 11. Its movement mode can adopt the existing electric drive, or adopt manual installation to clamp the guide rod 11. The inner side of the nut mounting seat 24 is slidably connected to the support plate 22 through a guide assembly 26. The guide assembly 26 is mainly a guide rail and a guide groove for moving in the up and down directions. A servo motor for driving the lead screw 23 to rotate is also installed on the outer side of the support plate 22. Driven by the servo motor, the lead screw 23 rotates and drives the clamping jaw 25 to move up and down along the support plate 22. Because the clamping jaw 25 clamps the guide rod 11, it drives the guide rod 11 to move up and down.

[0031] See also Figure 3 and Figure 4 The probe detection end 1 includes a carrier 12 and a connecting plate 15. The rear end of the carrier 12 is fixedly connected to the guide rod 11. When the adjustment device 21 drives the guide rod 11 to move up and down, the carrier 12 can be driven to move together. The front end of the carrier 12 is connected to the connecting plate 15 through a lifting assembly 17. The lifting assembly 17 is mainly composed of a cylinder and a linear guide structure used in conjunction with the cylinder, which can drive the carrier 12 to move up and down or left and right. The direction is set according to actual needs during installation.

[0032] An arc-shaped assembly component 16 is installed on the outside of the connecting plate 15. The assembly component 16 is detachably arranged on the connecting plate 15 so as to facilitate the replacement of assembly frames of different models to adapt to composite pipes of different diameters. Several probes 19 are evenly installed in the assembly component 16 through springs. The multiple probes 19 are used to efficiently perform eddy current detection on the composite pipe, and springs are provided so that they can be floatingly connected in the assembly component 16 to avoid hard contact with the outer wall or the inside of the composite pipe. A wire harness disperser 18 is installed inside the carrier 12. The rear end of the wire harness disperser 18 is connected to a plug 14. The plug 14 is used to connect power and signals. The front end of the wire harness disperser 18 is connected to the probe 19 through a cable to facilitate power supply and data transmission.

[0033] As a preferred solution, a support wheel 13 is installed at the bottom of the carrier 12 so that during the eddy current detection process, it can be moved in a rolling manner and avoid hard contact with the composite pipe, thereby protecting the detection of the probe 19. The outer side of the upper support frame of the support wheel 13 is flush with the outer surface of the carrier 12, making it more regular. A mounting frame can be opened on the outer shell of the carrier 12, and then the upper support frame of the support wheel 13 is installed, and a wheel that can rotate freely is installed at the bottom of the upper support frame. The support wheel 13 can adopt a screw slider adjustment structure during installation to adjust the angle of undulation and adapt to the detection of different pipe diameters.

[0034] See also Figure 5 and Figure 6 There is only one set of assembly components 16 on the outside of the connecting plate 15. Multiple sets of assembly components 16 of different models are fixed together separately during installation to adapt to composite pipes of different pipe diameters. Each set can be equipped with multiple probes 19, and each probe can perform eddy current detection on the composite pipe. Compared with the use of a single probe in the prior art, its detection efficiency is greatly improved.

[0035] Specifically, the assembly component 16 includes a mounting seat 161, which is an arc-shaped structure, and its two sides are mounted on the outer side of the connecting plate 15 by fixing screws 163. The mounting seat 161 is evenly provided with mounting grooves 162, and the probe 19 is installed in the mounting grooves 162 by floating springs 164. As a preferred solution, in order to make it float, a support platform is provided on one side of the probe 19, and the lower part of the floating spring 164 is against the support platform, and the upper side is against the mounting groove 162. When it touches the pipe body of the composite pipe, it has a certain elastic force due to the action of the floating spring 164, and performs floating contact, avoiding the risk brought by hard contact.

[0036] In addition, in order to increase the service life of the probe, an anti-wear sheet is provided at the bottom of the probe 19. The anti-wear sheet is a ceramic sheet, and a detection setting avoidance groove of the probe 19 is provided in the middle. Figures 6 to 8Furthermore, for testing composite pipes of different diameters, since the pipe diameters and depths differ greatly, a bracket 165 is provided on the outer side of the connecting plate 15, and an induction switch is installed on the bracket 165 to detect the depth of the composite pipe. When the end of the composite pipe is reached, it is determined that the eddy current test of the composite pipe is completed.

[0037] Embodiment 2, as Fig. 9 and Fig.10 As shown, a fully automatic composite pipe eddy current testing device includes a probe detection end 1 and a workbench 2, and also includes a rotating device 3, and the rotating device 3 is used to support the composite pipe and drive the composite pipe to rotate. Based on the prior art, the composite pipe is fixed during eddy current testing, resulting in the need for the probe detection end 1 and the workbench 2 to cooperate with each other to achieve the detection of the inner and outer walls of the composite pipe each time. Therefore, in order to reduce the working frequency of the workbench 2, the composite pipe is rotated with the help of the rotating device 3, and then a 360-degree internal and external eddy current test is performed on it.

[0038] The rotating device 3 includes a cabinet 31 and a base 35. A table is provided on the top of the cabinet 31. A linear guide 32 is provided on the top of the table to move horizontally with the base 35. Two bases 35 are provided, one of which is connected to a driving motor, so as to drive the base 35 to move horizontally along the linear guide 32 relative to the other base 35. Rollers 34 are rotatably connected to the two sides of the top of the base 35 through bearing seats 33. The outer periphery of the rollers 34 is wrapped with polyurethane to improve its own strength. The composite pipe is supported between the two rollers 34.

[0039] During implementation, the rotating device 3 is provided with at least two groups, each group has two rollers 34, and the four pairs of rollers 34 are controlled by a variable frequency motor to rotate the composite pipe in a circular manner. An encoder for detecting the circular rotation angle of the pipe is also installed on the rotating device 3.

[0040] In summary, the number of probes 19 in this solution is large and they are arranged in an arc shape on the assembly 16 (the maximum array has 20 single probes, covering a maximum arc width of 200mm). When inserted into the interior of the composite pipe, a 610mm diameter composite pipe can be inspected after 6 divisions, and the work efficiency is high. In this solution, several single probes are evenly installed, each probe 19 is installed in the installation groove 162, and is equipped with a floating spring 164 for floating, and an anti-wear sheet is inlaid on the end face of the probe 19, so that the probe 19 can be protected to the maximum extent.

[0041] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fully automatic composite pipe eddy current testing device, comprising a probe detection end (1) and a workbench (2), wherein the rear end of the probe detection end (1) is connected to a guide rod (11), and an adjustment device (21) for adjusting the guide rod (11) is installed on the workbench (2), characterized in that: The probe detection end (1) comprises a carrier (12) and a connecting plate (15); the rear end of the carrier (12) is fixedly connected to the guide rod (11); the front end of the carrier (12) is transmission-connected to the connecting plate (15) via a lifting assembly (17); an arc-shaped assembly assembly (16) is installed on the outer side of the connecting plate (15); a plurality of probes (19) are evenly installed in the assembly assembly (16) via springs and arranged in an arc shape; a wire harness disperser (18) is installed inside the carrier (12); the rear end of the wire harness disperser (18) is connected to a plug (14); the front end of the wire harness disperser (18) is connected to the probe (19) via a cable.

2. The fully automatic composite pipe eddy current testing device according to claim 1, characterized in that: A supporting wheel (13) is installed at the bottom of the carrier (12), and the outer side of the upper supporting frame of the supporting wheel (13) is flush with the outer surface of the carrier (12).

3. The fully automatic composite pipe eddy current testing device according to claim 1, characterized in that: Only one group of the assembly components (16) is provided on the outer side of the connecting plate (15), and a plurality of groups of the assembly components (16) of different models are fixed together separately during installation.

4. The fully automatic composite pipe eddy current testing device according to claim 3, characterized in that: The assembly component (16) includes a mounting seat (161), which is an arc-shaped structure. Two sides of the mounting seat (161) are mounted on the outer side of the connecting plate (15) by means of fixing screws (163). The mounting seat (161) is evenly provided with mounting grooves (162), and the probe (19) is mounted in the mounting groove (162) by means of a floating spring (164).

5. The fully automatic composite pipe eddy current testing device according to claim 4, characterized in that: A support platform is provided on one side of the probe (19), the lower part of the floating spring (164) is against the support platform, and an anti-wear sheet is provided at the bottom of the probe (19).

6. The fully automatic composite pipe eddy current testing device according to claim 3, characterized in that: A bracket (165) is provided on the outer side of the connecting plate (15), and an induction switch is installed on the bracket (165).

7. The fully automatic composite pipe eddy current testing device according to claim 1, characterized in that: The adjusting device (21) comprises a supporting plate (22) and a clamping jaw (25). The bottom of the supporting plate (22) is fixed on the workbench (2). A lead screw (23) is provided in the middle of the inner side of the supporting plate (22). The lead screw (23) is connected to a nut mounting seat (24) for outward rotation. The outer side of the nut mounting seat (24) is fixedly connected to the clamping jaw (25). The inner side of the nut mounting seat (24) is slidably connected to the supporting plate (22) through a guide assembly (26). A servo motor for driving the lead screw (23) to rotate is also installed on the outer side of the supporting plate (22).

8. The fully automatic composite pipe eddy current testing device according to claim 1, characterized in that: It also comprises a rotating device (3), wherein the rotating device (3) is used to support the composite pipe and drive the composite pipe to rotate.

9. The fully automatic composite pipe eddy current testing device according to claim 8, characterized in that: The rotating device (3) comprises a cabinet (31) and a base (35). A table is provided on the top of the cabinet (31). A linear guide rail (32) movable horizontally with the base (35) is provided on the top of the table. Rollers (34) are rotatably connected to both sides of the top of the base (35) via bearing seats (33).

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