A non-destructive testing device for a curved workpiece

Abstract

The utility model discloses a kind of curved surface workpiece nondestructive testing devices, it is related to nondestructive testing field, including ultrasonic flaw detector host computer, the ultrasonic flaw detector host computer is electrically connected with probe by connecting line;Coupling agent smearing subassembly is fixedly connected on the probe, for extruding coupling agent to the inductive end of probe;Extension rod is fixedly installed on the probe, pusher subassembly is provided on the extension rod, for driving coupling agent smearing subassembly extrudes coupling agent.The beneficial effect is that: the detachable connection of extension rod and probe is realized by threaded sleeve, when detecting low workpiece, extension rod can be removed directly handheld probe operation, flexible and convenient.Detecting high workpiece, only need to threadedly connect extension rod and probe, staff need not to climb, handheld extension rod can send probe to detection position, reduce operation risk.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, specifically to a nondestructive testing device for curved workpieces. Background Technology

[0002] In industrial production, non-destructive testing of curved workpieces is a crucial step in ensuring the safe operation of equipment, currently primarily achieved through ultrasonic flaw detection technology. Ultrasonic flaw detectors require the application of a coupling agent to the workpiece during use. Existing ultrasonic flaw detection devices are inconvenient to operate when inspecting workpieces at heights. Most existing ultrasonic flaw detector probes are handheld, requiring workers to use ladders, scaffolding, or other auxiliary tools to climb when the inspection location is at a height, such as the top of a large storage tank or high on a pipe support. This not only increases operational risks but also presents the problem of probe instability.

[0003] Although some devices are equipped with extension components, they cannot replenish the coupling agent simultaneously during the testing process, requiring repeated up and down adjustments, which significantly reduces the testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a non-destructive testing device for curved workpieces in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a non-destructive testing device for curved workpieces, including an ultrasonic flaw detector main unit, wherein the ultrasonic flaw detector main unit is electrically connected to a probe via a connecting cable.

[0007] A coupling agent application assembly is fixedly connected to the probe to apply coupling agent to the sensing end of the probe.

[0008] An extension rod is fixedly installed on the probe, and a pushing component is provided on the extension rod to drive the coupling agent application component to squeeze out the coupling agent.

[0009] Using the above-mentioned non-destructive testing device for curved workpieces, the extension rod can be detached from the probe. For the testing of workpieces at low positions, the probe can be held by hand, and the coupling agent can be squeezed out through the coupling agent application component. The probe can be moved along the workpiece, and the coupling agent can be applied to the surface of the workpiece during the movement. The workpiece can then be tested through the probe.

[0010] When inspecting workpieces at height, connect the extension rod to the probe, hold the extension rod to make the probe contact the workpiece surface, and push the assembly to drive the coupling agent application assembly to extrude and apply the agent while the probe is inspecting the workpiece at height.

[0011] Preferably, the ultrasonic flaw detector main unit is fixedly connected with a handle and a hook.

[0012] Preferably, the ultrasonic flaw detector main unit is fixedly connected to a winding reel for winding the connecting wire.

[0013] Preferably, a threaded sleeve is fixedly connected to the probe, and an extension rod is threadedly connected inside the threaded sleeve, with the length direction of the extension rod being set along the length direction of the probe.

[0014] Preferably, the pushing assembly includes two sliding sleeves slidably connected to the surface of the extension rod, a connecting rod fixedly connected between the two sliding sleeves, and a top plate fixedly connected to the sliding sleeve near the probe.

[0015] Preferably, a spring is fitted on the surface of the extension rod, one end of the spring is fixedly connected to the extension rod, and the other end of the spring is fixedly connected to a rubber pad. The rubber pad is slidably connected to the surface of the extension rod and contacts the top plate.

[0016] Preferably, the coupling agent application assembly includes a cylinder for storing coupling agent fixedly connected to the probe, a piston slidably connected inside the cylinder, and a piston rod corresponding to the top plate fixedly connected to the piston.

[0017] Preferably, the piston has a through hole, and a sealing plug is threaded into the through hole.

[0018] Preferably, a fixing ring is fixedly connected to the probe, and several pipes are fixedly connected to the fixing ring, with the pipes arranged along the length of the probe. An annular pipe is fixedly connected to the probe, and the annular pipe is fixedly connected to all the pipes and connecting pipes.

[0019] Preferably, a conical ring is fixedly connected to the fixing ring, and the conical ring is made of rubber. The conical ring is flush with the sensing end of the probe, and the inner wall of the conical ring is provided with several grooves.

[0020] The beneficial effects are:

[0021] 1. The extension rod and probe are detachably connected via a threaded sleeve. When inspecting workpieces at low locations, the extension rod can be removed, allowing for direct hand-held probe operation, which is flexible and convenient. When inspecting workpieces at high locations, only the extension rod needs to be threadedly connected to the probe; workers do not need to climb, and can simply hold the extension rod to bring the probe to the inspection position, reducing operational risks.

[0022] 2. The coupling agent application component works in conjunction with the pushing component, eliminating the need for additional tools during the inspection process. The barrel can be pre-stored with coupling agent. During inspection, the sliding sleeve drives the top plate to squeeze the piston rod, causing the piston to push the coupling agent out, achieving simultaneous inspection and application. This is especially beneficial for workpieces at height or on curved surfaces, eliminating the need to interrupt inspection for reapplying coupling agent, significantly reducing operational steps and greatly improving inspection efficiency.

[0023] 3. The coupling agent is evenly delivered to the probe's sensing end through a ring tube and several pipes. It works in conjunction with a rubber conical ring, which is flush with the probe's sensing end and has grooves on its inner wall. Firstly, the conical ring conforms to the surface of curved workpieces with varying curvatures, filling gaps and ensuring tight contact between the probe and the workpiece. Secondly, the grooves store a suitable amount of coupling agent, preventing it from slipping off the curved surface, reducing waste, ensuring stable sound wave transmission, and improving detection accuracy.

[0024] 4. The cable reel fixed on the ultrasonic flaw detector main unit can neatly wind and store the connecting wires, preventing tangling and wear. During testing, the length of the connecting wires can be flexibly adjusted according to the testing distance, eliminating concerns about wire snagging, extending the lifespan of the connecting wires, ensuring stable signal transmission, and reducing testing failures. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view structural diagram of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the main unit of the ultrasonic flaw detector of this utility model;

[0029] Figure 4 This is a three-dimensional structural diagram of the extension rod of this utility model;

[0030] Figure 5 This is a three-dimensional structural diagram of the probe of this utility model;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the conical ring of this utility model.

[0032] The annotations in the attached figures are explained as follows:

[0033] 1. Ultrasonic flaw detector main unit; 2. Handle; 3. Hook; 4. Winding reel; 5. Connecting wire; 6. Probe; 7. Coupling agent application assembly; 8. Extension rod; 9. Push assembly; 10. Sliding sleeve; 11. Connecting rod; 12. Top plate; 13. Spring; 14. Rubber pad; 15. Material cylinder; 16. Piston; 17. Piston rod; 18. Sealing plug; 19. Connecting pipe; 20. Fixing ring; 21. Pipe; 22. Ring pipe; 23. Conical ring; 24. Groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] See Figures 1-6 As shown, this utility model provides a non-destructive testing device for curved workpieces, including an ultrasonic flaw detector host 1, and a probe 6 electrically connected to the ultrasonic flaw detector host 1 via a connecting cable 5.

[0036] A coupling agent application component 7 is fixedly connected to the probe 6, which is used to squeeze the coupling agent onto the sensing end of the probe 6. The sensing end of the probe 6 is designed with an arc shape to adapt to the curved workpiece, and is used to emit ultrasonic waves to the workpiece and receive reflected waves.

[0037] The threaded sleeve is fixed to the tail of the probe 6. The inner wall is provided with internal threads, which cooperate with the external threads of the extension rod 8 to achieve a detachable connection between the two.

[0038] An extension rod 8 is fixedly installed on the probe 6. A pushing component 9 is provided on the extension rod 8 to drive the coupling agent application component 7 to squeeze out the coupling agent.

[0039] The ultrasonic flaw detector main unit 1, as the core control unit of the device, is used to transmit ultrasonic signals, receive reflected signals from the probe 6, and convert the signals into visual detection data such as waveform diagrams and defect location markings, allowing operators to determine whether there are defects such as cracks, pores, and inclusions inside the curved workpiece. Through precise signal processing algorithms, it can identify minute defects larger than 0.1 mm inside the workpiece, and the detection accuracy meets industrial-grade non-destructive testing standards such as GB / T11345-2013, providing reliable data support for the quality judgment of curved workpieces.

[0040] As an optional implementation, the ultrasonic flaw detector main unit 1 is fixedly connected with a handle 2 and a hook 3.

[0041] A winding reel 4 is fixedly connected to the main unit 1 of the ultrasonic flaw detector for winding the connecting wire 5. The winding reel 4 has a disc-shaped structure with wire-blocking protrusions on its edge for orderly winding of the connecting wire 5. The winding reel 4 can rotate around its central axis, facilitating adjustment of the length of the connecting wire 5. This prevents wear and breakage of the connecting wire 5 due to messy winding, extending the service life of the wire. During testing, the required length of the connecting wire 5 can be precisely extended according to the distance between the workpiece and the main unit, preventing the wire from being too long and snagging on the edge of the workpiece, or too short and limiting the movement range of the probe 6, ensuring a continuous and stable testing process.

[0042] A threaded sleeve is fixedly connected to the probe 6, and an extension rod 8 is threadedly connected inside the threaded sleeve, with the length direction of the extension rod 8 being set along the length direction of the probe 6.

[0043] The push assembly 9 includes two sliding sleeves 10 that are slidably connected to the surface of the extension rod 8. A connecting rod 11 is fixedly connected between the two sliding sleeves 10. A top plate 12 is fixedly connected to the sliding sleeve 10 near the probe 6.

[0044] The smooth sliding of the sleeve 10 ensures that staff can easily push the components without excessive force.

[0045] The synchronous design of the connecting rod 11 avoids the misalignment of a single sliding sleeve 10, ensures that the top plate 12 is accurately aligned with the piston rod 17, and ensures uniform force during compression, preventing the piston rod 17 from bending and being damaged.

[0046] A spring 13 is fitted on the surface of the extension rod 8. One end of the spring 13 is fixedly connected to the extension rod 8, and the other end of the spring 13 is fixedly connected to a rubber pad 14. The rubber pad 14 is slidably connected to the surface of the extension rod 8 and contacts the top plate 12.

[0047] The connecting rod 11 drives the top plate 12 to approach the piston rod 17, so that the top rod 12 pushes the piston rod 17, and the piston rod 17 drives the piston 16 to move. When it is necessary to pull the piston 16 out of the material cylinder 15, rotate the sliding sleeve 10 to make the top plate 12 and the piston rod 17 misaligned.

[0048] The coupling agent application assembly 7 includes a cylinder 15 for storing coupling agent fixedly connected to the probe 6, a piston 16 slidably connected inside the cylinder 15, and a piston rod 17 corresponding to the top plate 12 fixedly connected to the piston 16.

[0049] The barrel 15 is made of transparent plastic and has a volume of approximately 50 ml; it is used to store the coupling agent. The piston 16 is made of rubber and fits tightly against the inner wall of the barrel 15, allowing it to slide along the barrel wall. The piston rod 17 is a metal rod, with one end fixed to the piston 16 and the other end extending to the outside of the barrel 15, corresponding to the top plate 12.

[0050] The piston 16 has a through hole, and a sealing plug 18 is threaded into the through hole.

[0051] The function of the sealing plug 18 is to balance the air pressure inside and outside the barrel 15. Removing the sealing plug 18 makes it easier to remove the piston 16 from the barrel 15. After adding the coupling agent to the barrel 15, the sealing plug 18 is inserted into the barrel 15. Excess air in the barrel 15 can be discharged through the through hole. After the piston 16 comes into contact with the coupling agent, the through hole is sealed by the sealing plug 18.

[0052] If the piston 16 is pulled out directly when the through hole is closed, the coupling agent that has just solidified at the end of the pipe 21 is easily sucked into the pipe 21.

[0053] A fixing ring 20 is fixedly connected to the probe 6, and several pipes 21 are fixedly connected to the fixing ring 20. The pipes 21 are arranged along the length of the probe 6. An annular pipe 22 is fixedly connected to the probe 6, and the annular pipe 22 is fixedly connected to all the pipes 21 and the connecting pipe 19.

[0054] The ring structure enables the coupling agent to be distributed, avoiding interruption of the coupling agent supply due to blockage of a single pipe 21, ensuring consistent dosage from each pipe 21, and further improving the uniformity of coupling agent application.

[0055] A conical ring 23, made of rubber, is fixedly connected to the fixed ring 20. The conical ring 23 is flush with the sensing end of the probe 6, and its inner wall has several grooves 24. The conical ring 23 allows the coupling agent to be evenly applied to the workpiece surface. The rubber conical ring 23 is elastic and can conform tightly to the surface of the curved workpiece according to its curvature, filling gaps and reducing ultrasonic wave reflection loss. The grooves 24 can store an appropriate amount of coupling agent, preventing it from slipping due to gravity on the curved surface, extending the effective action time of the coupling agent, and reducing the number of reapplications. This is especially effective for vertical or inclined curved workpieces.

[0056] With the above structure, the extension rod 8 can be detached from the probe 6. For the detection of workpieces at low positions, the probe 6 can be held by hand, and the coupling agent can be squeezed out by the coupling agent application component 7. The probe 6 can be moved along the workpiece, and the coupling agent can be applied to the surface of the workpiece during the movement. The workpiece can then be detected by the probe 6.

[0057] When inspecting workpieces at height, connect the extension rod 8 to the probe 6, hold the extension rod 8 to make the probe 6 contact the workpiece surface, and push the component 9 to drive the coupling agent application component 7 to extrude and apply the coupling agent while the probe 6 is inspecting the workpiece at height.

[0058] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A non-destructive testing device for curved surface workpieces, characterized in that: Includes an ultrasonic flaw detector main unit (1), wherein the ultrasonic flaw detector main unit (1) is electrically connected to a probe (6) via a connecting cable (5); A coupling agent application assembly (7) is fixedly connected to the probe (6) for squeezing the coupling agent onto the sensing end of the probe (6); An extension rod (8) is fixedly installed on the probe (6), and a pushing component (9) is provided on the extension rod (8) for driving the coupling agent application component (7) to squeeze out the coupling agent; A threaded sleeve is fixedly connected to the probe (6), and an extension rod (8) is threadedly connected inside the threaded sleeve, and the length direction of the extension rod (8) is set along the length direction of the probe (6); The pushing assembly (9) includes two sliding sleeves (10) that are slidably connected to the surface of the extension rod (8), a connecting rod (11) is fixedly connected between the two sliding sleeves (10), and a top plate (12) is fixedly connected to the sliding sleeve (10) near the probe (6). The coupling agent application assembly (7) includes a cylinder (15) for storing coupling agent fixedly connected to the probe (6), a piston (16) is slidably connected inside the cylinder (15), and a piston rod (17) corresponding to the top plate (12) is fixedly connected to the piston (16). A fixing ring (20) is fixedly connected to the probe (6), and several pipes (21) are fixedly connected to the fixing ring (20). The pipes (21) are arranged along the length direction of the probe (6). An annular pipe (22) is fixedly connected to the probe (6), and the annular pipe (22) is fixedly connected to all the pipes (21) and the connecting pipe (19). A conical ring (23) is fixedly connected to the fixed ring (20), and the conical ring (23) is made of rubber. The conical ring (23) is flush with the sensing end of the probe (6), and the inner wall of the conical ring (23) is provided with several grooves (24).

2. The non-destructive testing device for curved surface workpieces according to claim 1, characterized in that: The ultrasonic flaw detector host (1) is fixedly connected to a handle (2) and a hook (3).

3. The non-destructive testing device for curved workpieces according to claim 1, characterized in that: The ultrasonic flaw detector host (1) is fixedly connected to a winding reel (4) for winding the connecting wire (5).

4. The non-destructive testing device for curved surface workpieces according to claim 1, characterized in that: A spring (13) is fitted on the surface of the extension rod (8). One end of the spring (13) is fixedly connected to the extension rod (8), and the other end of the spring (13) is fixedly connected to a rubber pad (14). The rubber pad (14) is slidably connected to the surface of the extension rod (8) and is in contact with the top plate (12).

5. The non-destructive testing device for curved surface workpieces according to claim 1, characterized in that: The piston (16) has a through hole, and a sealing plug (18) is threaded into the through hole.

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