A tofd scanning rig

Abstract

The utility model relates to TOFD detection technical field, concretely relates to a kind of TOFD scanning frame;Including crossbeam and auxiliary mechanism, auxiliary mechanism includes longitudinal beam, probe support, small magnetic roller and encoder support, when using, operator places scanning frame on the surface of pipe tunnel or small space workpiece, after adjusting position, hand holds longitudinal beam and walks on the surface of workpiece weld even speed, keeps scanner stable movement, scanning data is more perfect, to realize for narrow space or pipe tunnel etc. TOFD scanning, and can use existing encoder on market, reduce cost, in addition, scanning frame is manually bolted connection, convenient to carry, easy to operate, save time, space, finally, multiple small magnetic rollers are detachable, it is convenient to clean, and then by the structure of the application makes that scanning frame overall height is below 30mm, can realize scanning to narrow space weld TOFD, obtain data more accurately, scanning process is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of TOFD detection technology, and in particular to a TOFD scanning frame. Background Technology

[0002] TOFD (Time-of-Flight Defect) inspection is a detection method that uses a single transmitter and receiver probe to detect defects by utilizing acoustic signals obtained from the internal structure of the workpiece and from the "endpoints" and "corners" of the defect. TOFD inspections employ a recordable format to display the inspection process graphically, providing a more intuitive observation of the internal condition of the inspected object. It boasts high detection rate, accuracy, and efficiency. Therefore, a scanning frame must be used to hold the probe in place during TOFD inspection, ensuring that the probe travels along a predetermined trajectory on the workpiece surface.

[0003] Existing TOFD scanning racks are over 100mm high, or even higher. In practical inspections, especially in maintenance engineering applications, such as TOFD inspection of welds in confined spaces, like large pipe tunnels or welds with small gaps between two plates, existing TOFD scanning racks are inconvenient to use and cannot perform the necessary scanning. Utility Model Content

[0004] The purpose of this utility model is to provide a TOFD scanning frame with an overall height of less than 30mm, which can perform TOFD scanning on welds in narrow spaces, obtain more accurate data, and make the scanning process more convenient.

[0005] To achieve the above objectives, this utility model provides a TOFD scanning frame, including a crossbeam and an auxiliary mechanism; The auxiliary mechanism includes a longitudinal beam, a probe bracket, small magnetic rollers, and an encoder bracket. The longitudinal beam and the crossbeam are connected by bolts. The three small magnetic rollers are arranged in a triangle and are respectively installed in the grooves of the crossbeam and the longitudinal beam by bolts to prevent multiple small magnetic rollers from adsorbing onto ferromagnetic materials on non-detection surfaces in a confined space. The probe bracket is fixed in the slide rail of the crossbeam by bolts, and the encoder bracket is fixed in the slide rail of the crossbeam by bolts. A roller-type mini encoder is fixed at the lower end of the encoder bracket.

[0006] Except for the multiple small magnetic rollers, all other components are made of non-ferromagnetic materials.

[0007] The crossbeam is equipped with a slide rail for changing the relative position of the probe.

[0008] When multi-channel TOFD scanning is required, the number of crossbeams can be increased to achieve multi-channel TOFD scanning.

[0009] This utility model discloses a TOFD scanning frame. During use, the operator places the scanning frame on the surface of a workpiece in a pipe tunnel or confined space. After adjusting the position, the operator holds the longitudinal beam and moves it at a constant speed along the weld seam on the workpiece surface, maintaining stable movement of the scanner and resulting in more accurate scanning data. This enables TOFD scanning in confined spaces or pipe tunnels, and allows the use of existing encoders, reducing costs. Furthermore, the scanning frame is manually bolted, making it easy to carry and operate, saving time and space. Finally, multiple small magnetic rollers are detachable for easy cleaning. The structure of this application keeps the overall height of the scanning frame below 30mm, enabling TOFD scanning of weld seams in confined spaces, obtaining more accurate data, and making the scanning process more convenient. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0011] Figure 1 This is a schematic diagram of the overall structure of the TOFD scanning frame of this utility model.

[0012] Figure 2 This is a schematic diagram showing the installation position of the small magnetic roller of this utility model.

[0013] Figure 3 This is a schematic diagram of the probe bracket of this utility model.

[0014] Figure 4 This is a schematic diagram of the encoder bracket of this utility model.

[0015] In the diagram: 1-crossbeam, 2-longitudinal beam, 3-probe bracket, 4-small magnetic roller, 5-encoder bracket, 6-bolt. Detailed Implementation

[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0017] like Figures 1 to 4 As shown, where Figure 1 This is a schematic diagram of the overall structure of the TOFD scanning frame. Figure 2 This is a diagram showing the installation position of the small magnetic roller. Figure 3 This is a schematic diagram of the probe holder structure. Figure 4This is a structural diagram of an encoder bracket. This utility model provides a TOFD scanning bracket: it includes a crossbeam 1 and an auxiliary mechanism, wherein the auxiliary mechanism includes a longitudinal beam 2, a probe bracket 3, a small magnetic roller 4, and an encoder bracket 5. The aforementioned structural design allows the overall height of the scanning bracket to be less than 30mm, enabling TOFD scanning of weld seams in confined spaces, resulting in more accurate data and a more convenient scanning process. It is understood that the aforementioned design can improve the accuracy of scanning data and facilitate convenient scanning.

[0018] In this embodiment, the crossbeam 1 has a straight-line structure.

[0019] The longitudinal beam 2 and the crossbeam 1 are connected by bolts 6. The three small magnetic rollers 4 are arranged in a triangle and are respectively installed in the grooves of the crossbeam 1 and the longitudinal beam 2 by bolts 6. This prevents the multiple small magnetic rollers 4 from adsorbing onto ferromagnetic materials on non-detection surfaces in a confined space. The probe bracket 3 is fixed to the slide rail of the crossbeam 1 by bolts 6, and the encoder bracket 5 is fixed to the slide rail of the crossbeam 1 by bolts 6. A roller-type mini encoder is fixed to the lower end of the encoder bracket 5. The structure of the bolts 6 of the small magnetic rollers 4 and other components has an optical axis structure that slides with the inner hole of the component. This structure also facilitates the rotation of the small magnetic rollers 4. The triangular distribution of the three small magnetic rollers 4 increases their stability during scanning. The small magnetic rollers 4 are fixed by detachable bolts, which allows for replacement of the small magnetic rollers 4 and facilitates the cleaning of dirt adsorbed on the small magnetic rollers 4. The probe bracket 3 and the encoder bracket 5 are respectively fixed by bolts 6. The lower end of the encoder bracket 5 is used to fix the existing roller-type mini encoder on the market. This encoder is small and helps to save space.

[0020] Secondly, apart from the multiple small magnetic rollers 4, all other components are made of non-ferromagnetic materials.

[0021] Then, a slide rail is provided on the crossbeam 1 to allow for changes in the relative position of the probe. The slide rail also facilitates the installation and positioning of corresponding components.

[0022] Finally, when multi-channel TOFD scanning is required, the number of crossbeams 1 can be increased to achieve multi-channel TOFD scanning. This structure facilitates multi-channel scanning.

[0023] When using this utility model to achieve convenient scanning and improve the accuracy of scanning data, the operator places the scanning frame on the surface of a workpiece in a pipe tunnel or small space, adjusts the position, and then holds the longitudinal beam 2 and moves it at a constant speed on the weld seam of the workpiece surface to maintain the stable movement of the scanner, resulting in more perfect scanning data. This enables TOFD scanning in narrow spaces or pipe tunnels, and allows the use of existing encoders on the market, reducing costs. In addition, the scanning frame is manually bolted, making it easy to carry and operate, saving time and space. Finally, the multiple small magnetic rollers 4 are detachable for easy cleaning. Furthermore, the overall height of the scanning frame is less than 30mm through the structure of this application, enabling TOFD scanning of weld seams in narrow spaces, obtaining more accurate data, and making the scanning process more convenient.

[0024] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A TOFD scanning frame, comprising a crossbeam (1), characterized in that: It also includes auxiliary mechanisms; The auxiliary mechanism includes a longitudinal beam (2), a probe bracket (3), small magnetic rollers (4), and an encoder bracket (5). The longitudinal beam (2) and the crossbeam (1) are connected by bolts (6). The three small magnetic rollers (4) are arranged in a triangle and are installed in the grooves of the crossbeam (1) and the longitudinal beam (2) by bolts (6) to avoid multiple small magnetic rollers (4) adsorbing onto the ferromagnetic material on the non-detection surface in a narrow space. The probe bracket (3) is fixed in the slide of the crossbeam (1) by bolts (6). The encoder bracket (5) is fixed in the slide of the crossbeam (1) by bolts (6). A roller-type mini encoder is fixed at the lower end of the encoder bracket (5).

2. The TOFD scanning frame as described in claim 1, characterized in that: Except for the multiple small magnetic rollers (4), all other components are made of non-ferromagnetic materials.

3. The TOFD scanning frame as described in claim 1, characterized in that: The crossbeam (1) is provided with a slide rail for changing the relative position of the probe.

4. The TOFD scanning frame as described in claim 1, characterized in that... : When multi-channel TOFD scanning is required, the number of the crossbeams (1) can be increased to achieve multi-channel TOFD scanning.

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