Welding seam detection probe

Abstract

The utility model discloses a welding seam detection probe, which comprises a probe shell (1), a magnetic detection sensor (3) and a lens (8), the probe shell (1) comprises a connecting shell (11) and a lower shell (12), the connecting shell (11) is connected with the lower shell (12), the magnetic detection sensor (3) is connected to the lower shell (12), the lens (8) is connected to the connecting shell (11), the magnetic detection sensor (3) is connected to the lower shell (12), and the lens (8) is connected to the connecting shell (11). With the movement direction of the detection probe in the detection process as a first direction and the direction perpendicular to and pointing to a surface to be detected as a second direction, the magnetic detection sensor (3) and the lens (8) are located in a detection plane determined by the first direction and the second direction. Through redesign and optimization of the probe structure and the internal circuit, the probe can adapt to a narrow space, and the positions such as a narrow welding seam where a conventional probe is difficult to reach can be detected.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing, specifically to a welding seam inspection probe. Background Technology

[0002] Welding is a crucial construction method in nuclear power plant construction. The quality of welded joints significantly impacts the reliability of nuclear facility construction and installation, directly affecting the safe operation of the nuclear power plant. With the increasing number of nuclear power plants under construction, the safety of nuclear power engineering is receiving increasing attention from all parties. Currently, the main non-destructive testing technologies used in nuclear power projects under construction include radiographic testing (RT), ultrasonic testing (UT), penetrant testing (PT), eddy current testing, and magnetic particle testing. Among these, radiographic testing has a relatively large application rate, primarily due to its ease of detecting volumetric defects within welds. However, in actual engineering construction, for some important welded structures, the design often specifies internal volumetric testing (RT or ultrasonic testing) of the welds, but due to weld structure and material characteristics (e.g., certain fillet joints, saddle-shaped welded joints in branch pipes, or thick stainless steel welded joints), it is often impossible to implement conventional RT or ultrasonic testing standards. In the nuclear power plant construction standard RCC-M, for non-pipeline full-penetration fillet welds, if RT and ultrasonic testing cannot be performed post-weld, the corresponding requirements during the welding process must be followed. During the welding process, only surface inspection is generally performed (penetrating penetration test or magnetic particle test every three layers). However, surface inspection can only detect open defects on the surface of the weld and cannot detect internal defects. Therefore, without other compensation measures, defects may be missed. On the other hand, electromagnetic testing alone may ignore the undulations of the surface to be inspected.

[0003] Patent document CN114113337B discloses an electromagnetic ultrasonic flexible array probe and detection method for detecting defects in curved structures. The probe consists of four parts: an electromagnetic ultrasonic bias magnetic field unit, an electromagnetic ultrasonic excitation unit, an electromagnetic ultrasonic detection unit, and a flexible substrate. The electromagnetic ultrasonic excitation unit and the electromagnetic ultrasonic detection unit are each composed of two or more coils arranged in a certain array to enhance excitation and signal reception, which can effectively improve the detection capability and efficiency for curved structures. The flexible probe can be widely used for non-destructive testing of components with complex surface shapes and workpieces with narrow inspection spaces, expanding the application range of ultrasonic non-destructive testing technology. However, it does not solve the problem that electromagnetic detection alone may ignore the undulations of the surface to be tested.

[0004] Patent document CN116429700A discloses an additive titanium alloy laser electromagnetic ultrasonic defect detection system and a laser electromagnetic ultrasonic SAFT imaging detection method. The defect detection system includes a signal excitation unit, a signal receiving unit, an optical triggering circuit, and an industrial control computer. The optical triggering circuit is connected to both the signal excitation unit and the signal receiving unit to acquire an initial signal and to feed back the acquired trigger signal to the signal receiving unit. The laser control system in the industrial control computer emits pulsed laser light. A scanning array program or a two-dimensional scanning translation stage controls the deflection of the light source to achieve laser source scanning along a predetermined path, ultrasonic signal excitation and reception. The acquired data is then transmitted to a host computer. After the scanned array data is processed by a synthetic aperture focusing imaging algorithm, the image of the internal defects of the test block is finally reconstructed. However, this method does not address the issue that electromagnetic detection alone may overlook the undulations of the surface being inspected. Utility Model Content

[0005] Based on the above-mentioned technical problems, this utility model proposes a welding seam detection probe to solve the problem that electromagnetic detection alone may ignore the undulations of the surface to be detected.

[0006] To achieve the above objectives, this utility model proposes a welding seam detection probe.

[0007] A welding seam inspection probe:

[0008] The device includes a probe housing, a magnetic detection sensor, and a lens. The probe housing comprises a connecting housing and a lower housing. The connecting housing is connected to the lower housing, the magnetic detection sensor is connected to the lower housing, and the lens is connected to the connecting housing.

[0009] The direction of movement of the detection probe during the detection process is taken as the first direction, and the direction perpendicular to and pointing towards the surface to be measured is taken as the second direction. The magnetic detection sensor and the lens are located in the detection plane determined by the first direction and the second direction. The lower housing is wedge-shaped and has a cross-sectional area that gradually decreases along the second direction. The lower housing is arranged along the first direction.

[0010] Furthermore, the connecting housing includes a signal amplifier module, which is fixed inside the connecting housing.

[0011] Furthermore, the connecting housing includes a probe cover, which is fixed to the connecting housing.

[0012] Furthermore, the connecting housing also includes an aviation plug, which is perpendicularly connected to the probe cover along the second direction.

[0013] Furthermore, the connecting housing includes a connecting housing groove, which is located in the detection plane defined by the first direction and the second direction, and is placed on the outer side of the connecting housing.

[0014] Furthermore, the connecting housing groove includes the lens, which is disposed in the connecting housing groove.

[0015] Furthermore, the connecting housing groove also includes a surface-mount LED, which is disposed in the connecting housing groove.

[0016] Furthermore, the connecting housing includes a connecting housing slot, which is located on the outer side of the connecting housing.

[0017] Furthermore, the connecting housing slot also includes a lens circuit board, which is disposed in the connecting housing slot.

[0018] Furthermore, the lower housing is connected to the connecting housing via a plane with the largest wedge-shaped cross-sectional area.

[0019] Furthermore, the lower housing includes a probe detection groove and a probe excitation groove, which are located within the connecting housing, and the probe excitation groove is located inside the lower housing relative to the probe detection groove.

[0020] Furthermore, the probe detection groove includes the magnetic detection sensor, which is disposed in the probe detection groove.

[0021] Furthermore, the probe excitation groove includes a magnetic core, which is disposed within the probe excitation groove.

[0022] Based on the above technical solution, this utility model has at least the following beneficial effects:

[0023] 1. This utility model proposes a weld seam inspection probe. The redesign and optimization of the probe structure and internal circuitry enable the probe to adapt to narrow spaces and achieve perfect fit with narrow sections of layered weld seams. This design improvement significantly enhances the applicability and flexibility of the inspection probe in complex welded structures, ensuring the efficiency and accuracy of the inspection process.

[0024] 2. This utility model proposes a welding seam inspection probe. By optimizing the probe structure, it further improves the method of monitoring the quality of welding seams. While improving the welding seam inspection method, this utility model also indirectly enhances the safety and reliability of important equipment or devices in important facilities such as nuclear power plants during construction, and has significant practical value and broad application prospects. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 A three-dimensional structural diagram of a welding seam inspection probe according to one embodiment is shown;

[0027] The above figures include the following reference numerals:

[0028] 1. Probe housing; 2. Magnetic core; 3. Magnetic detection sensor; 4. Signal amplification module; 5. Aviation connector; 6. Probe cover; 7. Fixing screw holes; 8. Lens;

[0029] 11. Connecting housing; 12. Lower housing;

[0030] 111. Connecting shell groove; 112. Connecting shell slot; 113. Lens circuit board; 114. SMD LED;

[0031] 121. Probe detection groove; 122. Probe excitation groove. Detailed Implementation

[0032] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] The present invention will be further described in detail below with reference to specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention. The term "comprising" indicates the presence of a feature, but does not exclude the presence or addition of one or more other features. The terms "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the purpose of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In this description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] Example

[0036] This utility model proposes a welding seam inspection probe, such as... Figure 1 As shown, the device includes a probe housing 1, a magnetic detection sensor 3, and a lens 8. The probe housing 1 includes a connecting housing 11 and a lower housing 12. The connecting housing 11 is connected to the lower housing 12. The magnetic detection sensor 3 is connected to the lower housing 12, and the lens 8 is connected to the connecting housing 11.

[0037] The direction of movement of the detection probe during the detection process is taken as the first direction, and the direction perpendicular to and pointing towards the surface to be tested is taken as the second direction. The magnetic detection sensor 3 and the lens 8 are located in the detection plane determined by the first direction and the second direction. The lower housing is wedge-shaped and has a cross-sectional area that gradually decreases along the second direction. The lower housing is arranged along the first direction.

[0038] Furthermore, the signal amplification module 4 is fixed inside the probe housing 1 with hot melt adhesive. The probe cover 6 is fixed to the probe housing 1 with threads. The aviation plug 5 is installed inside the probe housing 1 and connected to one side of the probe cover 6 by interference fit with the cylindrical mounting hole. The connection housing 11 is connected to the lower housing 12 with screws. The connection housing groove 111 is installed along the probe movement direction. The lens 8 and the surface mount LED 114 are installed inside the connection housing groove 111. The back is the lens connection housing slot 112, and the lens circuit board 11 is placed in the connection housing slot 112.

[0039] In summary, as can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0040] 1. This utility model proposes a weld seam inspection probe. The redesign and optimization of the probe structure and internal circuitry enable the probe to adapt to narrow spaces and achieve perfect fit with narrow sections of layered weld seams. This design improvement significantly enhances the applicability and flexibility of the inspection probe in complex welded structures, ensuring the efficiency and accuracy of the inspection process.

[0041] 2. The technical solution of this utility model improves the method of monitoring the quality of welded seams by optimizing the probe structure. While improving the method of welded seam detection, this utility model also indirectly improves the safety and reliability of important equipment or devices in important facilities such as nuclear power plants during construction, and has important practical value and broad application prospects.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0044] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A weld seam detection probe, characterized in that, The detection probe comprises a probe shell (1), a magnetic detection sensor (3) and a lens (8), the probe shell (1) comprises a connecting shell (11) and a lower shell (12), the connecting shell (11) is connected with the lower shell (12), the magnetic detection sensor (3) is connected to the lower shell (12), and the lens (8) is connected to the connecting shell (11); The movement direction of the detection probe in the detection process is a first direction, and the direction perpendicular to the surface to be detected and pointing to the surface to be detected is a second direction, the magnetic detection sensor (3) and the lens (8) are located in a detection plane determined by the first direction and the second direction, the lower shell is wedge-shaped, the lower shell has a gradually decreasing cross-sectional area along the second direction, and the lower shell is arranged along the first direction. The connecting shell (11) comprises a signal amplifier module (4), and the signal amplifier module (4) is fixed in the connecting shell (11). The connecting shell (11) comprises a connecting shell clamping groove (112), and the connecting shell clamping groove (112) is arranged on one side of the connecting shell (11).

2. The detection probe of claim 1, wherein, The connecting shell (11) comprises a probe gland (6), The probe gland (6) and the connecting shell (11) are fixed with each other.

3. The detection probe of claim 2, wherein, The connecting shell (11) further comprises an aviation plug (5), The aviation plug (5) is connected to the probe gland (6) in the second direction.

4. The detection probe of claim 1, wherein, The connecting shell (11) comprises a connecting shell groove (111), The connecting shell groove (111) is located in the detection plane determined by the first direction and the second direction and is arranged on one side of the connecting shell (11).

5. The detection probe of claim 4, wherein, The connecting shell groove (111) comprises the lens (8), The lens (8) is arranged in the connecting shell groove (111).

6. The detection probe of claim 4, wherein, The connecting shell groove (111) further comprises a patch LED (114), The patch LED (114) is arranged in the connecting shell groove (111).

7. The detection probe of claim 1, wherein The connecting shell clamping groove (112) further comprises a lens circuit board (113), The lens circuit board (113) is arranged in the connecting shell clamping groove (112).

8. The detection probe according to claim 1, wherein The lower shell (12) is connected to the connecting shell (11) through a plane with the largest wedge-shaped cross-sectional area.

9. The detection probe of claim 8, wherein, The lower shell (12) comprises a probe detection groove (121) and a probe excitation groove (122), The probe detection groove (121) and the probe excitation groove (122) are located in the connecting shell (11), and the probe excitation groove (122) is located inside the lower shell (12) compared with the probe detection groove (121).

10. The detection probe of claim 9, wherein, The probe detection groove (121) comprises the magnetic detection sensor (3), The magnetic detection sensor (3) is arranged in the probe detection groove (121).

11. The detection probe of claim 9, wherein, The probe excitation groove (122) comprises a magnetic core (2), The magnetic core (2) is arranged in the probe excitation groove (122).

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