Water immersion ultrasonic detection device for welding seam

Abstract

The utility model discloses a water immersion ultrasonic detection device for a welding seam. The device comprises a mounting cylinder body, a pagoda joint, a bottom sponge and a detection probe, a cavity is formed in the mounting cylinder, the lower end is open, and the bottom sponge is mounted at the bottom of the cylinder to achieve a stable coupling effect. The pagoda connector is connected with a water source, continuity of the water filling state in the detection process is guaranteed, and the lower end of the detection probe extends into the cavity to achieve ultrasonic coupling detection. The right-angle piece is connected with the tool carrier, the sponge is fixed through the rubber-coated bolt, the structure is stable, operation is easy and convenient, and the device is suitable for high-precision welding seam detection.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic technology in non-destructive testing, specifically to an ultrasonic testing device for water immersion of welds. Background Art

[0002] In the pressure equipment industry, ultrasonic testing is an important non-destructive testing method, widely used in the quality control of pressure equipment. Various defects can occur during the welding process of pressure equipment, requiring quality control through non-destructive testing. In one case, during process testing, an interlayer lack of fusion defect was found in the weld seam of a spherical structure. This defect is highly hazardous, affecting equipment quality and operational safety. To ensure the detection rate of interlayer lack of fusion, the incident direction of the ultrasonic beam must be controlled to be as perpendicular as possible to the defect surface, ensuring the signal can be received by the testing probe. Typically, when using a straight probe for ultrasonic testing of interlayer lack of fusion in weld seams, the weld seam needs to be ground flush with the base material to meet coupling requirements. This invention, based on the working conditions, has developed this fixture to ensure that water immersion ultrasonic testing can be performed in a water-coupled state without grinding the weld seam, while still meeting standard requirements. This invention is convenient to operate, easy to implement, and reduces the amount of grinding work. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the technical problems existing in the prior art, the present invention provides an ultrasonic testing device for water immersion of welds, including a mounting cylinder, a pagoda connector, a bottom sponge, and a testing probe. The mounting cylinder has a cavity with an opening at the lower end. The bottom sponge is installed at the bottom of the mounting cylinder. The pagoda connector is installed on one side of the mounting cylinder. The testing probe is installed on the mounting cylinder, and the lower end of the testing probe extends into the cavity.

[0005] As a preferred technical solution for a water immersion ultrasonic testing device for welds, the mounting cylinder is connected to the tooling carrier by a right-angle member, the right-angle member is connected to the top of the mounting cylinder by a locking bolt, and a locking nut is provided on the locking bolt above the right-angle member.

[0006] As a preferred technical solution for a water immersion ultrasonic testing device for welds, the tooling carrier is a square frame.

[0007] As a preferred technical solution for a water immersion ultrasonic testing device for welds, the bottom sponge is fastened to the bottom of the mounting cylinder by a number of rubber-coated bolts.

[0008] As a preferred technical solution for a water immersion ultrasonic testing device for welds, the mounting cylinder includes an upper cover and a cylindrical body. The upper cover is installed on the upper end of the cylindrical body, and a sealing ring is provided on the end face of the upper cover through a mounting baffle.

[0009] The beneficial effects of this utility model are mainly reflected in the following aspects:

[0010] First, the device exhibits excellent coupling performance. By incorporating sealing film, bottom sponge, and pagoda-shaped connectors within the mounting cylinder, the device remains fully hydrated throughout the testing process, achieving a stable water immersion coupling effect. This design effectively ensures the transmission of ultrasonic waves between the probe and the weld, improving the accuracy of ultrasonic testing, and is particularly suitable for weld surfaces requiring high-quality inspection.

[0011] Secondly, this device boasts a robust structure and is easy to operate. The mounting cylinder, connected to the tooling carrier via right-angle fittings, locking bolts, and locking nuts, forms a sturdy integrated structure that is unlikely to loosen. The tooling carrier employs a square frame design, providing excellent support for the device. This not only ensures high stability but also facilitates movement and position adjustment, significantly improving operational convenience and making testing more efficient.

[0012] Furthermore, the device's vibration-damping design further enhances the stability of the testing process. The bottom sponge is secured to the bottom of the mounting cylinder with rubber-coated bolts. The design of these bolts provides excellent vibration damping, preventing sponge displacement or probe deviation caused by vibration during testing, thus ensuring the sponge's adhesion to the weld surface and the accuracy of the testing. Attached Figure Description

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

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

[0015] Figure 2 This is a front view structural diagram of the present invention;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Reference numerals: 10. Mounting cylinder; 11. Pagoda connector; 12. Bottom sponge; 13. Detection probe; 14. Right-angle piece; 15. Tooling carrier; 16. Locking bolt; 17. Locking nut; 19. Rubber-coated bolt; 20. Mounting baffle; 21. Sealing ring. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0022] Please refer to Figures 1 to 3As shown, this invention provides a device for ultrasonic testing of welds by water immersion, comprising a mounting cylinder 10, a pagoda connector 11, a bottom sponge 12, and a testing probe 13. This device has a simple structure and is easy to operate, effectively detecting weld quality under water immersion conditions, and is particularly suitable for welds with uneven surfaces or a certain excess height. Specifically, the mounting cylinder 10 is a cavity structure with an opening at the lower end, allowing water to flow smoothly and achieve good coupling during the testing process. The bottom sponge 12 is installed at the bottom of the mounting cylinder 10, conforming to the weld surface and providing a stable contact surface for the testing probe 13. The pagoda connector 11 is installed on one side of the mounting cylinder 10, facilitating connection to a water source for continuous water supply, ensuring the testing area remains constantly filled with water. The testing probe 13 is installed on the upper part of the mounting cylinder 10, with its lower end extending into the cavity, enabling acoustic coupling with the weld through the water layer. This design ensures that the probe can directly act on the testing area, achieving efficient ultrasonic signal transmission and thus improving the accuracy of weld testing. This structure allows the entire device to maintain the stability of the water layer during testing, ensuring that ultrasonic waves can be effectively transmitted to the weld area, thereby achieving efficient detection of internal weld defects. This design is suitable for quality control in fields such as pressure equipment and welded structures, improving testing efficiency and accuracy.

[0023] The mounting cylinder 10 of the device is securely connected to the tooling carrier 15 via a right-angle member 14, ensuring structural robustness and testing accuracy. The right-angle member 14 is connected to the mounting cylinder 10 via a top locking bolt 16. A locking nut 17 is also provided at the locking bolt 16 above the right-angle member 14 to further enhance the stability of the connection and prevent loosening during use. The tooling carrier 15 adopts a square frame design. This structure not only facilitates the installation and docking of the device but also increases the overall support of the device, ensuring its stability during testing. Furthermore, the bottom sponge 12 is fastened to the bottom of the mounting cylinder 10 by several rubber-coated bolts 19. The use of rubber-coated bolts 19 effectively secures the sponge and provides shock absorption, ensuring that the sponge adheres tightly to the testing surface during testing, providing a stable coupling effect, further improving testing accuracy and device durability.

[0024] The mounting cylinder 10 consists of an upper cover and a cylindrical body. The upper cover is mounted on the upper end of the cylindrical body to provide a good sealing effect and structural stability. A sealing ring 21 is provided on the end face of the upper cover through the mounting baffle 20, which further enhances the sealing performance of the device and prevents water or other media from leaking from the inside of the device during the detection process.

[0025] The ultrasonic testing of the butt weld of the spherical structure without removing excess height is achieved as follows: The insertion position of the probe sensor into the sealing ring 21 is adjusted according to the weld thickness to obtain a suitable coupling layer height. The sealing ring 21 is tightly fitted to the probe sensor and the cylindrical wall. The handle of the tooling carrier 15 is gripped tightly and pressed downwards to ensure the bottom sponge 12 of the cylindrical body is pressed against the weld, thus forming a closed cavity. Water is continuously injected into this cavity using a hose connected to the pagoda connector 11. During the smooth movement along the weld, the closed cavity remains filled with water, thereby achieving coupling between the ultrasonic testing probe 13 and the workpiece, ensuring that the ultrasonic beam can enter the weld to complete the weld testing.

[0026] Six M3 bolt holes are evenly distributed on the bottom surface of the cylindrical body. Polyurethane shock-absorbing coated bolts 19 are used to connect the bottom of the cylindrical body and the sponge. Pressing the handle makes the sponge at the bottom of the cylindrical body fit against the spherical surface, forming a water-filled cavity. Tap water is continuously injected through the pagoda connector 11 to ensure that the entire cavity is filled with water during the testing process, ensuring the coupling effect.

[0027] To ensure that the ultrasonic beam is as perpendicular as possible to the weld surface during the inspection, the screwing depth of the polyurethane damping coated bolt 19 is adjusted so that the probe surface is as parallel as possible to the spherical surface. During the movement, the polyurethane damping coated bolt 19 ensures that the sponge is subjected to uniform and stable force and that the sponge does not become skewed.

[0028] The embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for ultrasonic testing of weld seams by water immersion, characterized in that, The device includes an installation cylinder, a pagoda connector, a bottom sponge, and a detection probe. The installation cylinder has a cavity with an opening at the lower end. The bottom sponge is installed at the bottom of the installation cylinder. The pagoda connector is installed on one side of the installation cylinder. The detection probe is installed on the installation cylinder, and the lower end of the detection probe extends into the cavity.

2. The ultrasonic testing device for water immersion in welds according to claim 1, characterized in that, The mounting cylinder is connected to the tooling carrier by a right-angle piece, and the right-angle piece is connected to the top of the mounting cylinder by a locking bolt. A locking nut is provided on the locking bolt above the right-angle piece.

3. The ultrasonic testing device for water immersion in welds according to claim 2, characterized in that, The tooling carrier is a square frame.

4. The ultrasonic testing device for water immersion in welds according to claim 1, characterized in that, The bottom sponge is fastened to the bottom of the mounting cylinder by several rubber-coated bolts.

5. The ultrasonic testing device for water immersion in welds according to claim 1, characterized in that, The mounting cylinder includes an upper cover and a cylindrical body. The upper cover is installed on the upper end of the cylindrical body, and a sealing ring is provided on the end face of the upper cover through a mounting baffle.

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