Acoustic emission probe clamp for large-curvature component

Abstract

The utility model discloses an acoustic emission probe clamp for a large-curvature component. The acoustic emission probe clamp comprises a fixed plate, two magnetic attraction parts, a spring, a fixed seat, an adjusting screw rod and two adjusting nuts, the magnetic fixture is adsorbed on a large-curvature pressure container or pipeline needing to be detected through the magnetic suction part; through the adjusting screw rod and the adjusting nut, axial stretching and retracting of the fixing seat relative to the fixing plate are achieved, the fixing plate enables the probe to be attached between the clamping groove and the surface of the component, the coupling effect is enhanced, the acoustic emission nondestructive monitoring sensitivity is improved, and the probe is not prone to falling off when vibrated when pressurized.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures for acoustic emission probes, in particular to an acoustic emission probe fixture for large-curvature components. Background Technique

[0002] Acoustic emission (AE) non-destructive testing is an on-line testing technology. By collecting the transient elastic waves generated by the rapid release of energy during the deformation, fracture or phase change of solid materials, it analyzes and studies the deformation and crack propagation of materials under stress. Therefore, AE can dynamically and continuously detect the active defects of equipment or components, and has a wide range of applications in special equipment fields such as pressure vessels and pressure pipelines. The specific implementation process of AE detection is that the elastic waves emitted by the acoustic emission source propagate through the medium to the surface of the object to be inspected, causing the surface to vibrate. The sensitive probe made of piezoelectric material converts the transient displacement on the surface into an electrical signal, and then forms characteristic parameters after amplification and processing. Therefore, the coupling degree between the probe and the equipment surface determines whether the AE source signal can be successfully collected in the acoustic emission detection.

[0003] At present, when performing AE detection on steel special equipment, magnetic fixtures are usually used. However, when detecting small-radius pressure vessels or pipelines, due to their excessive curvature, the magnetic fixtures cannot well fix the probe to closely fit with the component, affecting the coupling effect. At present, to solve this problem, a small-radius probe is generally used, supplemented by a method of fixing with tape. However, specific probes need to be customized, and the method of fixing with tape is easily affected by the vibration generated during pressurization and falls off.

[0004] Therefore, an acoustic emission probe fixture for large-curvature components is needed to solve the above problems. Content of the Utility Model

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An acoustic emission probe fixture for large-curvature components, comprising a fixing plate, two magnetic attraction parts, a spring, a fixing seat, an adjusting screw rod and two adjusting nuts;

[0007] The two magnetic attraction parts are symmetrically arranged on the lower surface of the fixing plate; the fixing seat is arranged between the two magnetic attraction parts; a through hole is arranged on the fixing plate; one end of the adjusting screw rod passes through the through hole movably and is connected with the fixing seat; the two adjusting nuts are respectively arranged on both sides of the through hole, and the two adjusting nuts are respectively threadedly connected with the adjusting screw rod; the magnetic attraction part is used for magnetically attracting the detected component; the spring is sleeved on the adjusting screw rod, the spring is located between the fixing plate and the fixing seat, and a clamping groove is arranged on the fixing seat.

[0008] Preferably, the magnetic attraction part is made of permanent magnet material.

[0009] Preferably, the fixing base is in a cylindrical structure, and the clamping groove is arranged at the lower end of the fixing base.

[0010] Preferably, the magnetic attraction part is in a cuboid structure.

[0011] Preferably, the fixing base includes a connecting part and a clamping part; the connecting part is fixedly connected or integrally formed with the top of the clamping part; a connecting hole is arranged on the connecting part, and the connecting part is fixedly connected with the adjusting screw through the connecting hole.

[0012] Preferably, the acoustic emission probe fixture for large-curvature components further includes two gaskets, the two gaskets are respectively arranged on both sides of the spring, and the two gaskets are movably sleeved on the adjusting screw.

[0013] Preferably, the acoustic emission probe fixture for large-curvature components further includes two gaskets, the two gaskets are respectively arranged on both sides of the spring, one of the gaskets is movably sleeved on the connecting part, and the other gasket is movably sleeved on the adjusting screw.

[0014] Furthermore, the fixing base is made of rubber material.

[0015] Furthermore, the gasket is an annular gasket, and the outer diameter of the gasket is larger than the diameter of the spring.

[0016] Furthermore, the diameter of the adjusting nut is larger than the diameter of the through hole.

[0017] Furthermore, the cross section of the clamping groove is in a rectangular or circular structure.

[0018] Preferably, the magnetic attraction part includes a first connecting part, a second connecting part and a protective sleeve; one end of the first connecting part is fixedly connected with the fixing plate, the other end is fixedly connected with the second connecting part, the second connecting part is made of permanent magnet material; the protective sleeve is detachably sleeved outside the second connecting part.

[0019] Due to the adoption of the above technical solutions, the technical progress obtained by the present utility model compared with the prior art is as follows: the magnetic fixture is adsorbed on the large-curvature pressure vessel or pipeline to be detected through the magnetic attraction part; through the adjusting screw and the adjusting nut, the axial expansion and contraction of the fixing base relative to the fixing plate is realized, and the fixing plate fits the probe between the clamping groove and the surface of the component, enhancing the coupling effect and improving the sensitivity of acoustic emission non-destructive monitoring, making the probe not easy to fall off when being pressurized, and being applicable to large-curvature detection components. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0021] Figure 1 Structural schematic diagram of an acoustic emission probe fixture for large curvature components of the present invention;

[0022] Figure 2 Structural schematic diagram of an acoustic emission probe fixture for large curvature components of the present invention;

[0023] Figure 3 Structural schematic diagram of an acoustic emission probe fixture for large curvature components of the present invention; Main element symbol description

[0024] Fixed plate 11 Magnetic attraction part 12 Spring 13 Fixed seat 14 Adjusting screw 15 Adjusting nut 16 Through hole 110 Clamping groove 141 Connecting part 142 Clamping part 143 Gasket 17 Connecting hole 140 First connecting part 121 Second connecting part 122 Protective sleeve 123

[0025] The following specific embodiments will further illustrate the present invention in conjunction with the above drawings. Specific embodiments

[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish different objects and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0027] Reference to "embodiment" in this text means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present utility model. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0028] Please refer to Figures 1-3 , an embodiment of the present utility model provides an acoustic emission probe fixture for large curvature components, which includes a fixing plate 11, two magnetic attraction parts 12, a spring 13, a fixing seat 14, an adjusting screw 15, and two adjusting nuts 16;

[0029] The two magnetic attraction parts 12 are symmetrically arranged on the lower surface of the fixing plate 11; the fixing seat 14 is arranged between the two magnetic attraction parts 12; a through hole 110 is arranged on the fixing plate 11; one end of the adjusting screw 15 movably passes through the through hole and is connected to the fixing seat 14; the two adjusting nuts 16 are respectively arranged on both sides of the through hole, and the two adjusting nuts 16 are respectively threadedly connected to the adjusting screw 15; the magnetic attraction part 12 is made of permanent magnet material; the spring 13 is sleeved on the adjusting screw 15, the spring 13 is located between the fixing plate 11 and the fixing seat 14, and a clamping groove 141 is arranged on the fixing seat 14.

[0030] In an embodiment of the present utility model, the fixing seat 14 has a cylindrical structure, and the clamping groove 141 is arranged at the lower end of the fixing seat 14.

[0031] In an embodiment of the present utility model, the magnetic attraction part is made of permanent magnet material.

[0032] Please refer to Figure 3 , in an embodiment of the present utility model, the magnetic attraction part 12 includes a first connecting part 121, a second connecting part 122, and a protective sleeve 123; one end of the first connecting part 121 is fixedly connected to the fixing plate 11, and the other end is fixedly connected to the second connecting part 122, and the second connecting part 122 is made of permanent magnet material; the protective sleeve 123 is detachably sleeved outside the second connecting part 122. The detection site environment is messy, and the second connecting part 122 is likely to adsorb messy things and make the surface uneven, thus affecting the coupling effect between the probe and the equipment surface. Adding the protective sleeve 123 facilitates the cleaning of sundries and does not affect the magnetic attraction effect.

[0033] Further, a clamping groove 1211 is formed on the first connecting part 121, and a clamping block 1222 that is clamped and matched with the clamping groove 1211 is arranged inside the protective sleeve 123. Through the clamping connection between the clamping groove 1211 and the clamping block 1222, the protective sleeve can be detachably arranged on the magnetic attraction part 12.

[0034] Further, the protective sleeve 123 is made of PE material.

[0035] In an embodiment of the present utility model, both the magnetic attraction part 12 and the fixing plate 11 are in a cuboid structure, and the magnetic attraction part 12 is vertically connected to the fixing plate.

[0036] In an embodiment of the present utility model, the fixing base 14 includes a connecting part 142 and a clamping part 143; the connecting part 142 is fixedly connected or integrally formed with the top of the clamping part 143; a connecting hole 140 is provided on the connecting part 142, and the connecting part 142 is fixedly connected to the adjusting screw 15 through the connecting hole.

[0037] In an embodiment of the present utility model, the acoustic emission probe fixture for large-curvature components further includes two gaskets 17, the two gaskets 17 are respectively arranged on both sides of the spring 13, and the two gaskets 17 are movably sleeved on the adjusting screw 15.

[0038] In an embodiment of the present utility model, the acoustic emission probe fixture for large-curvature components further includes two gaskets 17, the two gaskets 17 are respectively arranged on both sides of the spring 13, one of the gaskets 17 is movably sleeved on the connecting part 142, and the other gasket 17 is movably sleeved on the adjusting screw 15.

[0039] Furthermore, the fixing base 14 is made of rubber material.

[0040] Furthermore, the gasket 17 is an annular gasket, and the outer diameter of the gasket 17 is larger than the diameter of the spring 13.

[0041] Furthermore, the diameter of the adjusting nut 16 is larger than the diameter of the through hole 110.

[0042] Furthermore, the cross-section of the clamping groove 141 is in a rectangular or circular structure.

[0043] When the present utility model is used, the acoustic emission probe fixture for large-curvature components is adsorbed on the large-curvature pressure vessel or pipeline to be detected through the magnetic attraction part 12; through the adjusting screw 15 and the adjusting nut 16, the axial telescopic movement of the fixing base 14 relative to the fixing plate 11 is realized, and the fixing plate 11 fits the probe between the clamping groove 141 and the surface of the component, enhancing the coupling effect and improving the sensitivity of acoustic emission non-destructive monitoring.

[0044] The above has generally described the present utility model in detail, but on the basis of the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements without departing from the spirit of the present utility model are all within the protection scope of the present utility model.

Claims

1. An acoustic emission probe fixture for large curvature components, characterized in that: It includes a fixing plate, two magnetic suction parts, a spring, a fixing seat, an adjusting screw and two adjusting nuts; The two magnetic attraction parts are symmetrically arranged on the lower surface of the fixed plate; the fixed seat is arranged between the two magnetic attraction parts; a through hole is arranged on the fixed plate; one end of the adjusting screw is connected to the fixed seat after passing through the through hole; two adjusting nuts are respectively arranged on both sides of the through hole, and the two adjusting nuts are respectively threadedly connected to the adjusting screw; the magnetic attraction part is used for the magnetic detection component; the spring sleeve is arranged on the adjusting screw, the spring is located between the fixed plate and the fixed seat, and a clamping groove is arranged on the fixed seat.

2. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The fixing seat is in a cylindrical structure, and the clamping groove is arranged at the lower end of the fixing seat.

3. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The magnetic attraction part and the fixing plate are both rectangular parallelepiped structures, and the magnetic attraction part is vertically connected to the fixing plate.

4. The acoustic emission probe fixture for a large curvature component according to claim 3, characterized in that: The fixing seat comprises a connecting part and a clamping part; the connecting part is fixedly connected with the top of the clamping part or formed integrally; a connecting hole is arranged on the connecting part, and the connecting part is fixedly connected with the adjusting screw through the connecting hole.

5. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The acoustic emission probe fixture for a large curvature component also includes two gaskets, which are respectively arranged on both sides of the spring and are movably sleeved on the adjusting screw.

6. The acoustic emission probe fixture for a large curvature component according to claim 3, characterized in that: The acoustic emission probe fixture for a large curvature component also includes two gaskets, which are respectively arranged on both sides of the spring, one of which is movably sleeved on the connecting part, and the other is movably sleeved on the adjusting screw.

7. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The fixing seat is made of rubber.

8. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The cross section of the clamping groove is a rectangular or circular structure.

9. The acoustic emission probe fixture for a large curvature component according to claim 1, characterized in that: The magnetic attraction part includes a first connecting part, a second connecting part and a protective cover; one end of the first connecting part is fixedly connected to the fixing plate, and the other end is fixedly connected to the second connecting part, and the second connecting part is made of a permanent magnet material; the protective cover is detachably mounted on the outside of the second connecting part.

10. The acoustic emission probe fixture for a large curvature component according to claim 9, characterized in that: A clamping groove is provided on the first connecting portion, and a clamping block which is clamped and matched with the clamping groove is arranged inside the protective sleeve.

Images