Miniature endoscope and ultrasonic probe for welding seams in pipes in narrow spaces

Abstract

The present application relates to the technical field of endoscopes, in particular to a micro endoscope and an ultrasonic detection probe for pipeline welds in narrow spaces, comprising a wiring module and a probe module. The micro endoscope integrates the ultrasonic detection probe, realizes dual-mode detection of "optics + ultrasound", and can complete surface and internal detection in a single insertion. The wiring module and the braided curved probe pipe are tightly connected through a connecting mechanism, which is convenient to disassemble and assemble. The setting of the capsule fastener satisfies the assembly connection of the connecting cover body and the probe mounting seat, and also satisfies the limiting function of the lead wire. Through the combination of the limiting support assembly and the elastic compensation assembly, the excessive twisting of the lead wire of the ultrasonic detection probe and the braided curved probe pipe is avoided when turning, the minimum bending radius is increased, dynamic compensation is realized when bending, the minimum bending radius is limited, and the efficiency and accuracy of detection are improved.

Description

Miniature endoscope and ultrasonic testing probe for pipe welds in confined spaces Technical Field

[0001] This invention relates to the field of endoscopy technology, specifically to a miniature endoscope and ultrasonic testing probe for pipe weld seams in confined spaces. Background Technology

[0002] The miniature endoscope, acting as the "eye," provides real-time high-definition images of the inside of pipes, quickly locating macroscopic defects on the weld surface (such as cracks, corrosion, foreign objects, and lack of fusion). Its extremely small diameter allows it to penetrate deep into curved pipes, covering areas inaccessible to traditional equipment. It also features flexible steering for omnidirectional observation, avoiding blind spots. The endoscope automatically marks the location of weld surface defects using image recognition algorithms and generates coordinate data. The ultrasonic probe, based on the coordinates provided by the endoscope, precisely locates the area beneath the defect and triggers an ultrasonic scan.

[0003] In the prior art, such as an industrial endoscope with publication number CN207586541U, a main body, a connecting part, and a probe part are included. The main body is connected to the probe part through the connecting part. The probe part includes an illumination lamp, a visible light camera, and an infrared thermal imaging sensor. One end of the probe part is connected to the connecting part, and the illumination lamp, visible light camera, and infrared thermal imaging sensor are disposed at the other end of the probe part. This industrial endoscope, by simultaneously incorporating a visible light camera and an infrared thermal imaging sensor in the probe part, enables the probe part to simultaneously perform imaging and temperature measurement functions, allowing for multi-faceted detection, facilitating understanding of the internal conditions of the inspected equipment, and improving detection performance. Furthermore, this product has a simple structure, is easy to operate, and is readily applicable.

[0004] However, in actual use, miniature endoscopes are usually designed for single use or are difficult to disassemble, resulting in high maintenance costs; and the detection probe cannot be rotated, and traditional equipment will wear or even twist the probe wires and sleeves after rotation fatigue, shortening the bending life of the wires and thus affecting the efficiency of endoscope tube weld inspection.

[0005] Therefore, this invention proposes a miniature endoscope and ultrasonic testing probe for pipe welds in narrow spaces to solve the problems of existing equipment having a simple structure that is difficult to disassemble, and the probe wires and sleeves being worn or even twisted after rotational fatigue, which affects the efficiency of pipe weld inspection. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a miniature endoscope and ultrasonic testing probe for pipe welds in narrow spaces, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an ultrasonic testing probe, comprising a wiring module and a probe module, wherein the wiring module is covered and installed with a wire, and the probe module includes a connecting mechanism, a braided curved probe tube, a connecting cover, and a probe mounting base. The output end of the wiring module is connected to the braided curved probe tube, the connecting mechanism is disposed between the wiring module and the braided curved probe tube, one end of the braided curved probe tube away from the connecting mechanism is fixedly connected to the connecting cover, and the probe mounting base is disposed at the other end of the connecting cover. The connecting mechanism includes a threaded sleeve, a threaded sheath, an interface deformation ring, and a fastening nut; the braided curved probe tube is located at the other end of the connecting cover. A reinforcing ring is fixedly installed on the outer surface of one end of the connection mechanism, and the outer surface of the reinforcing ring moves in contact with the inner side of the interface deformation ring; a connecting ring is fixedly installed on the end of the braided curved probe near the connecting cover, and a limit support component is provided on the inner side of the connecting ring, the limit support component including a support collar, and an elastic compensation component is provided on the side of the support collar near the braided curved probe; a capsule-shaped fastener is fixedly installed at the center of the connecting cover, and the outer surface of the capsule-shaped fastener is threadedly connected to the inner wall of the center of the probe mounting base; a probe body is rotatably connected to the inner side of the probe mounting base, and a fine-tuning component is provided between the probe body and the probe mounting base.

[0008] Preferably, the threaded sleeve is fixedly installed on the outer surface of the wiring module, and the outer surface of the threaded sleeve is threadedly connected to the inner annular surface of the threaded sheath. A tapered tail sleeve is embedded at the end of the threaded sheath away from the braided curved probe, and a sealing ring is fixedly installed on the inner annular surface of the tapered tail sleeve. The inner annular surface of the sealing ring is in close contact with the outer surface of the wiring module.

[0009] Preferably, the end of the screw-on sleeve away from the tapered tail sleeve is fixedly connected to the interface deformation ring by bolts. An insulating pad is attached to the inner side of the interface deformation ring. The outer surface of the interface deformation ring is threaded to the inner surface of the fastening nut. Pre-reserved grooves are correspondingly opened on the outer ring surfaces of the interface deformation ring and the insulating pad.

[0010] Preferably, the cross-section of the support collar is in the shape of an "I" and the outer ring surface of the support collar is fixedly installed with curved ribs. The curved ribs are arranged in multiple sets in a circular array about the central axis of the protective sleeve.

[0011] Preferably, the elastic compensation component includes an embedded ring plate, which is embedded in the side of the support ring near the braided curved probe. A curved clamping plate is movably engaged on the outer surface of the embedded ring plate, and a swinging contact plate is rotatably connected to the other end of the curved clamping plate. The outer surface of the swinging contact plate away from the curved clamping plate is in movable contact with the inner wall of the braided curved probe.

[0012] Preferably, the outer side of the curved retaining plate and the outer side of the swinging contact plate are fixedly connected with an elastic connecting piece, and the outer surface of the elastic connecting piece is in movable contact with the inner wall of the braided curved probe.

[0013] Preferably, the inner surface of the capsule-shaped fastener is in movable contact with the outer surface of the wire, and a protective sleeve is fixedly connected to one end of the capsule-shaped fastener near the braided curved probe. The protective sleeve is composed of a conical sleeve one and a conical sleeve two and is integrally formed. One end of the conical sleeve one is fixedly connected to the inner surface of the connecting cover and connected to one end of the capsule-shaped fastener, and the conical sleeve two penetrates the center of the support collar.

[0014] Preferably, the fine-tuning component includes a drive gear and a meshing gear ring. Connecting shaft seats are fixedly installed on both sides of the probe body. The outer surface of the connecting shaft seat is rotatably connected to the inner side wall of the probe mounting seat. The drive gear is rotatably installed on the inner wall of the probe mounting seat. The meshing gear ring is fixedly installed on one outer surface of the probe body. The outer surface of the meshing gear ring meshes and rotates with the outer surface of the drive gear.

[0015] Preferably, a power connector is fixedly provided on the side of the probe body near the connecting cover. A screw connector is threaded onto the inner surface of the power connector. A controller is provided on the inner side of the screw connector. The controller is electrically connected to the wire.

[0016] Preferably, the miniature endoscope for pipe weld seams in confined spaces includes an endoscope body, which includes a control module and a display module, as well as the aforementioned ultrasonic detection probe, which is electrically connected to the control module, the display module, and the wiring module.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention proposes a miniature endoscope and ultrasonic testing probe for pipe welds in confined spaces. The miniature endoscope integrates an ultrasonic testing probe, enabling dual-mode "optical + ultrasonic" testing, allowing for surface and internal inspection with a single insertion. The entire assembly utilizes a connecting mechanism to tightly connect the wiring module and the braided bending probe, facilitating assembly and disassembly. The use of a capsule-shaped fastener not only facilitates the assembly connection between the connecting cover and the probe mounting base but also limits the movement of the lead wire. Furthermore, the combination of a limiting support component and an elastic compensation component prevents excessive twisting of the lead wire during turning of the ultrasonic testing probe and the braided bending probe, increasing the minimum bending radius and achieving dynamic compensation during bending. This ensures flexible turning and inspection of pipe welds in confined spaces while limiting the minimum bending radius, improving inspection efficiency and accuracy, and further extending the service life of the endoscope and probe. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0021] Figure 3 is a side view of the probe module of the present invention;

[0022] Figure 4 is a schematic diagram of the cross-sectional structure at point AA in Figure 3;

[0023] Figure 5 is an enlarged structural diagram of point A in Figure 4;

[0024] Figure 6 is a magnified structural diagram of point B in Figure 4;

[0025] Figure 7 is an enlarged structural diagram of point C in Figure 4;

[0026] Figure 8 is a cross-sectional structural diagram of the probe mounting base of the present invention in the state of being detached from the connecting cover;

[0027] Figure 9 is a schematic diagram of the disassembled structure of the probe module of the present invention;

[0028] Figure 10 is an enlarged structural diagram of point D in Figure 9;

[0029] Figure 11 is a schematic diagram of the connection structure between the wiring module and the support collar of the present invention;

[0030] Figure 12 is a schematic diagram of the internal structure of the probe module of the present invention;

[0031] Figure 13 is a schematic diagram of the connection structure between the limiting support component and the elastic compensation component of the present invention;

[0032] Figure 14 is a schematic diagram of the internal structure of the screw base and probe mounting base of the present invention after disassembly.

[0033] Figure 15 is a schematic diagram of the disassembled structure of the connection mechanism of the present invention.

[0034] In the diagram: 1. Endoscope body; 11. Control module; 12. Display module; 2. Wiring module; 21. Wire; 22. Snake-bone component; 23. Traction wire; 3. Probe module; 31. Connecting mechanism; 311. Threaded sleeve; 312. Threaded sheath; 3121. Conical tail sleeve; 3122. Sealing ring one; 313. Interface deformation ring; 3131. Insulating contact pad; 31311. Sealing ring two; 3130. Reserved groove; 314. Fastening nut; 32. Braided bent probe; 320. Reinforcing ring; 321. Connecting ring; 322 3221. Support collar; 3222. Curved rib; 323. Embedded ring plate; 3230. J-type limiting spring block; 3231. Curved clamping plate; 32311. Guide wheel; 3232. Swinging contact plate; 3233. Elastic connecting piece; 33. Connecting cover; 331. Bag-type fastener; 332. Cable sheath; 3321. Conical sleeve one; 3322. Conical sleeve two; 34. Probe mounting base; 341. Probe body; 342. Drive gear; 3421. Meshing gear ring; 3411. Connecting shaft seat; 3412. Electrical connection base; 3413. Threaded connection base. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1, please refer to Figures 1-15. This invention provides an ultrasonic testing probe, including a wiring module 2 and a probe module 3. A wire 21 is installed inside the wiring module 2, and a steering traction component is provided at one end of the wire 21. The steering traction component includes a snake-bone component 22 and a traction wire 23. The traction wire 23 has four sets and penetrates the inner wall of the snake-bone component 22. It should be noted that the steering traction component also includes a rocker arm and a steering joint (not shown). The rocker arm and steering joint are located at the end of the wiring module 2 away from the probe module 3. One end of the traction wire 23 is fixedly connected to the steering joint. When adjusting the steering of the probe module 3, the rocker arm is manipulated to rotate the steering joint, applying a corresponding operating force. The traction wire 23 receives the steering joint... Upon receiving the rotation signal, a corresponding traction motion is generated according to the preset transmission relationship, thereby driving the probe mounting base 34 to achieve precise steering adjustment. The rocker arm here is electrically connected to the control module 11. The probe module 3 includes a connecting mechanism 31, a braided curved probe tube 32, a connecting cover 33, and a probe mounting base 34. The output end of the wiring module 2 is connected to the braided curved probe tube 32. The connecting mechanism 31 is located between the wiring module 2 and the braided curved probe tube 32. The end of the braided curved probe tube 32 away from the connecting mechanism 31 is fixedly connected to the connecting cover 33. The probe mounting base 34 is located at the other end of the connecting cover 33. The connecting mechanism 31 includes a threaded sleeve 311, a threaded sheath 312, an interface deformation ring 313, and a fastener. Nut 314 and threaded sleeve 311 are fixedly installed on the outer surface of wiring module 2. The outer surface of threaded sleeve 311 is threadedly connected to the inner annular surface of threaded sleeve 312. The outer surface of interface deformation ring 313 is threadedly adapted to the inner surface of fastening nut 314. A reinforcing ring 320 is fixedly installed on the outer surface of the braided bent probe 32 near the connecting mechanism 31. The outer surface of reinforcing ring 320 is in movable contact with the inner side of interface deformation ring 313. A connecting ring 321 is fixedly installed on the end of braided bent probe 32 near the connecting cover 33. A limit support assembly is provided on the inner side of connecting ring 321. The limit support assembly includes a support collar 322. A curved rib 3221 is fixedly installed on the outer annular surface of support collar 322. An elastic compensation component is provided on the side of the collar 322 near the braided curved probe 32. The elastic compensation component includes an embedded ring plate 323, which is embedded in the side of the supporting collar 322 near the braided curved probe 32. A curved clamping plate 3231 is movably engaged on the outer surface of the embedded ring plate 323. A swinging contact plate 3232 is rotatably connected to the other end of the curved clamping plate 3231. The outer surface of the swinging contact plate 3232 away from the curved clamping plate 3231 movably abuts against the inner wall of the braided curved probe 32. An elastic connecting piece 3233 is fixedly connected to the outer side of the curved clamping plate 3231 and the outer side of the swinging contact plate 3232. The outer surface of the elastic connecting piece 3233 movably abuts against the inner wall of the braided curved probe 32.A capsule-shaped fastener 331 is fixedly installed at the center of the connecting cover 33. The inner surface of the capsule-shaped fastener 331 is in movable contact with the outer surface of the wire 21. A protective sleeve 332 is fixedly connected to one end of the capsule-shaped fastener 331 near the braided bent probe 32. The outer surface of the capsule-shaped fastener 331 is threadedly connected to the inner wall of the center of the probe mounting base 34. The probe body 341 is rotatably connected to the inner side of the probe mounting base 34. A fine-tuning component is provided between the probe body 341 and the probe mounting base 34.

[0037] In this embodiment, the structure of the ultrasonic testing probe is optimized, replacing the traditional integrated design. When assembling the braided curved probe 32 with the wiring module 2, the mating port of the braided curved probe 32 abuts against the mating port of the wiring module 2. The hand-held screw-in sleeve 312 is screwed inward from the end of the threaded sleeve 311 fitted on the outer end of the wiring module 2 away from the braided curved probe 32. The other end of the threaded sleeve 311 is connected to the interface deformation ring 313 and the fastening nut 314 for a matching screw connection. When the fastening nut 314 is tightened, the assembly between the wiring module 2 and the braided curved probe 32 is achieved, which also facilitates disassembly and assembly. When adjusting the direction of the probe body 341, the corresponding traction steel wire 23 is pulled, causing the probe body 341 to move along the pulled side. The steering mechanism, through the cooperation of the support collar 322 and the curved rib 3221, limits the connection of the traction wire 23 while absorbing deformation pressure. As shown in Figure 6, when the probe body 341 is adjusting its steering, the braided curved probe tube 32 bends. The elastic compensation component on its inner side provides dynamic support for the bent braided curved probe tube 32 in a timely manner, limiting the minimum bending radius. Specifically, the swing contact plate 3232 and the elastic connecting piece 3233 abut against the side wall of the braided curved probe tube 32, and the connecting ring 321 connects the braided curved probe tube 32 to the connecting cover 33, preventing the braided curved probe tube 32 from directly twisting during steering. It also protects the wire 21, further improving the service life of the wire 21 and the braided curved probe tube 32.

[0038] In Example 2, referring to Figures 1-15, based on Example 1, to enhance the sealing effect at the connection between the wiring module 2 and the braided curved probe 32: a tapered tail sleeve 3121 is embedded at the end of the screw-on sleeve 312 away from the braided curved probe 32, and a sealing ring 3122 is fixedly installed on the inner ring surface of the tapered tail sleeve 3121, with the inner ring surface of the sealing ring 3122 in close contact with the outer surface of the wiring module 2; the end of the screw-on sleeve 312 away from the tapered tail sleeve 3121 is fixedly connected to the interface deformation ring 313 by bolts, and an insulating pad 3131 is attached to the inner side of the interface deformation ring 313, with a reserved groove 3130 correspondingly opened on the outer ring surface of the interface deformation ring 313 and the insulating pad 3131;

[0039] In this embodiment, a tapered tail sleeve 3121 is installed at one end of the screw-in sleeve 312. Through the narrowing structural design, the tapered tail sleeve 3121 and the sealing ring 3122 are tightly attached to the outer wall of the wiring module 2. The sealing ring 3122 and the sealing ring 31311 here not only ensure the sealing of the installation, but also adapt to deformation, so that the gap at the interface is compensated.

[0040] In Example 3, referring to Figures 1-15, based on Example 2, to achieve smooth traction of the traction wire 23: the cross-section of the support collar 322 is I-shaped, and multiple sets of curved ribs 3221 are arranged in a circular array about the central axis of the protective sleeve 332; a J-shaped limiting spring block 3230 is fixedly added to the outer surface of the embedded ring plate 323, the inner wall of the J-shaped limiting spring block 3230 is connected to the traction wire 23 through and movably connected to the outer surface; a receiving groove is opened on the curved clamping plate 3231, and a guide wheel 32311 is rotatably installed inside the receiving groove, the outer surface of the guide wheel 32311 is in contact with the outer surface of the traction wire 23; the inner surface of the curved clamping plate 3231 is in contact with the outer surface of the J-shaped limiting spring block 3230.

[0041] In this embodiment, the J-shaped limiting spring block 3230 is used to limit the four sets of traction steel wires 23, avoiding wear caused by directly passing through the embedded ring plate 323. When the probe body 341 is rotated and adjusted, the braided curved probe tube 32 bends. Here, the J-shaped limiting spring block 3230 abuts against the curved clamping plate 3231 on the inwardly bent side, which plays an auxiliary support role for the curved clamping plate 3231. Furthermore, by setting the guide wheel 32311 on the curved clamping plate 3231, the direct contact is changed to rolling contact, reducing the wear on the traction steel wires 23 and further extending the overall service life of the equipment.

[0042] In Example 4, referring to Figures 1-15, based on Example 3, the cable sheath 332 is composed of a conical sleeve 1 3321 and a conical sleeve 2 3322, and is integrally formed. One end of the conical sleeve 1 3321 is fixedly connected to the inner surface of the connecting cover 33 and connected to one end of the bladder-shaped fastener 331. The conical sleeve 2 3322 passes through the center of the support ring 322. Heat dissipation fins are evenly distributed on the inner wall of the connecting cover 33 and the outer surface of the conical sleeve 1 3321.

[0043] The protective sleeve 332 here is integrally formed by tapered sleeve one 3321 and tapered sleeve two 3322. Tapered sleeve two 3322 passes through the center of the support ring 322. The protective sleeve 332 is connected to the capsule-shaped fastener 331, which can protect the conductor 21. The protective sleeve 332 as a whole not only satisfies the protection effect of the conductor 21, but also serves as a through part connecting the braided bent probe 32 and the connecting cover 33, achieving the effect of multiple uses.

[0044] In Example 5, referring to Figures 1-15, based on Example 4, in order to achieve fine-tuning after the probe body 341 is turned: the fine-tuning component includes a drive gear 342 and a meshing gear ring 3421. Connecting shaft seats 3411 are fixedly installed on both sides of the probe body 341. The outer surface of the connecting shaft seats 3411 is rotatably connected to the inner side wall of the probe mounting base 34. The drive gear 342 is rotatably installed on the inner wall of the probe mounting base 34. The meshing gear ring 3421 is fixedly installed on one side of the outer surface of the probe body 341. The outer surface of the meshing gear ring 3421 meshes and rotates with the outer surface of the drive gear 342. A power connector 3412 is fixedly added to the side of the probe body 341 near the connecting cover 33. A screw connector 3413 is threadedly connected to the inner surface of the power connector 3412. A controller is provided on the inner side of the screw connector 3413. The controller is electrically connected to the wire 21.

[0045] In this embodiment, when the probe body 341 needs to be fine-tuned, the drive gear 342 is rotated. It should be noted that a servo motor (not shown) is installed on one side of the drive gear 342. The servo motor is fixedly connected to the side wall of the probe mounting base 34. The drive gear 342 is fixedly installed on the output shaft of the servo motor. When the servo motor drives the drive gear 342 to rotate, the outer surface of the meshing gear ring 3421 meshes with the outer surface of the drive gear 342, thereby adjusting the capture angle of the probe body 341. It is worth noting that the power connector 3412 and the screw connector 3413 are threadedly matched and can accommodate the controller connected to the wire 21. When the probe mounting base 34 and the probe body 341 are separated from the connecting cover 33, the probe mounting base 34 is rotated as a whole. At this time, the restriction between the probe mounting base 34 and the capsule-shaped fastener 331 is released, and the restriction between the power connector 3412 and the screw connector 3413 is released, realizing integrated quick operation and facilitating disassembly and installation.

[0046] Example 6, referring to Figures 1-15, based on Example 5, the present invention also provides a miniature endoscope for pipe weld seams in narrow spaces, including an endoscope body 1, the endoscope body 1 including a control module 11 and a display module 12, and also including the aforementioned ultrasonic detection probe, the ultrasonic detection probe being electrically connected to the control module 11, the display module 12 and the wiring module 2 respectively.

[0047] In this embodiment, the control module 11 is electrically connected to the joystick, responsible for receiving the operation signals from the joystick and controlling components such as the steering joint according to a preset program to achieve precise adjustment of the steering of the probe body 341. It may also have the function of processing and analyzing ultrasonic detection signals to provide accurate detection results for the inspectors. The display module 12 is used to display the images and data of the ultrasonic detection in real time, enabling the inspectors to intuitively observe the internal condition of the pipe within the narrow space being inspected and promptly identify potential problems. The wiring module 2 is the core part of the probe's internal electrical connection, serving to transmit signals and electrical energy. The wire 21 is installed inside the wiring module 2, responsible for transmitting the ultrasonic detection signals from the probe body 341 to the control module 11 for processing, and simultaneously transmitting the control signals issued by the control module 11 to relevant components to ensure that all parts of the probe work together.

[0048] The working principle and usage process of this invention are as follows: In actual use, firstly, the braided curved probe 32 is connected to the wiring module 2. Holding the screw-on sleeve 312, the threaded sleeve 311, which is fitted on the outer end of the wiring module 2, is screwed inward from the end away from the braided curved probe 32. Then, the other end of the threaded sleeve 311 is connected to the interface deformation ring 313 and the fastening nut 314 for matching screw connection. Tightening the fastening nut 314 completes the assembly of the wiring module 2 and the braided curved probe 32. This design facilitates disassembly and assembly. Secondly, when adjusting the rotation of the ultrasonic detection probe, the rocker arm electrically connected to the control module 11 is operated to rotate the steering joint. After applying the operating force, the traction wire 23 receives the rotation signal from the steering joint and generates traction movement according to the preset transmission relationship, driving the probe mounting base 34 to achieve precise rotation adjustment. Pulling the corresponding traction wire 23 causes the probe body 3 to rotate. 41. The probe body 341 rotates along the pulling side, and the traction steel wire 23 is limited and connected by the support collar 322 and the curved rib 3221, and the deformation pressure is absorbed. When the probe body 341 is rotated and adjusted, the braided curved probe tube 32 bends. The elastic compensation component inside provides dynamic support in time, limiting the minimum bending radius. The swing contact plate 3232 and the elastic connecting piece 3233 abut against the side wall of the braided curved probe tube 32. The connecting ring 321 connects the braided curved probe tube 32 and the connecting cover 33 to prevent the braided curved probe tube 32 from twisting and to protect the wire 21. According to the actual situation inside the narrow space of the pipe, the display module 12 displays the ultrasonic detection image and data in real time. The wiring module 2, as the core of the internal electrical connection of the probe, transmits signals and power. The wire 21 is wrapped and installed inside the wiring module 2 to transmit ultrasonic detection signals and control signals, ensuring that all parts of the probe work together.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic testing probe, comprising a wiring module (2) and a probe module (3), wherein the wiring module (2) is covered with a wire (21), and the probe module (3) comprises a connecting mechanism (31), a braided bent probe tube (32), a connecting cover (33), and a probe mounting base (34), characterized in that: The output end of the wiring module (2) is connected to the braided bent probe (32). The connecting mechanism (31) is located between the wiring module (2) and the braided bent probe (32). The end of the braided bent probe (32) away from the connecting mechanism (31) is fixedly connected to the connecting cover (33). The probe mounting seat (34) is located at the other end of the connecting cover (33). The connecting mechanism (31) includes a threaded sleeve (311), a threaded sheath (312), an interface deformation ring (313), and a fastening nut (314). The outer surface of the end of the braided bent probe (32) closest to the connecting mechanism (31) is fixed. A reinforcing ring (320) is installed, the outer surface of which movably abuts against the inner side of the interface deformation ring (313); a connecting ring (321) is fixedly installed at one end of the braided bent probe (32) near the connecting cover (33), and a limit support component is provided on the inner side of the connecting ring (321), the limit support component including a support collar (322), and an elastic compensation component is provided on the side of the support collar (322) near the braided bent probe (32); a capsule-shaped fastener (331) is fixedly installed at the center of the connecting cover (33), and the outer surface of the capsule-shaped fastener (331) is in contact with the probe mounting. The center inner wall of the seat (34) is threaded; the probe body (341) is rotatably connected to the inner side of the probe mounting seat (34), and a fine-tuning component is provided between the probe body (341) and the probe mounting seat (34); the cross section of the support collar (322) is in the shape of an "I"; the outer ring surface of the support collar (322) is fixedly installed with curved ribs (3221), and the curved ribs (3221) are arranged in multiple sets in a circular array about the central axis of the wire sheath (332); the elastic compensation component includes an embedded ring plate (323), which is embedded in the support collar (322). On the side near the braided curved probe (32), a curved retaining plate (3231) is movably engaged on the outer surface of the mounting ring plate (3233). The other end of the curved retaining plate (3231) is rotatably connected to a swinging contact plate (3232). The outer surface of the swinging contact plate (3232) away from the curved retaining plate (3231) is in movable contact with the inner wall of the braided curved probe (32). An elastic connecting piece (3233) is fixedly connected to the outer side of the curved retaining plate (3231) and the outer side of the swinging contact plate (3232). The outer surface of the elastic connecting piece (3233) is in movable contact with the inner wall of the braided curved probe (32).The fine-tuning assembly includes a drive gear (342) and a meshing gear ring (3421). Connecting shaft seats (3411) are fixedly mounted on both sides of the probe body (341). The outer surface of the connecting shaft seat (3411) is rotatably connected to the inner sidewall of the probe mounting base (34). The drive gear (342) is rotatably mounted on the inner wall of the probe mounting base (34). The meshing gear ring (3421) is fixedly mounted on one outer surface of the probe body (341), and its outer surface meshes with the outer surface of the drive gear (342).

2. The ultrasonic testing probe according to claim 1, characterized in that: The threaded sleeve (311) is fixedly installed on the outer surface of the wiring module (2). The outer surface of the threaded sleeve (311) is threadedly connected to the inner annular surface of the threaded sleeve (312). A tapered tail sleeve (3121) is embedded at the end of the threaded sleeve (312) away from the braided curved probe (32). A sealing ring (3122) is fixedly installed on the inner annular surface of the tapered tail sleeve (3121). The inner annular surface of the sealing ring (3122) is in close contact with the outer surface of the wiring module (2).

3. The ultrasonic testing probe according to claim 2, characterized in that: The end of the threaded sleeve (312) away from the conical tail sleeve (3121) is fixedly connected to the interface deformation ring (313) by bolts. An insulating pad (3131) is attached to the inner side of the interface deformation ring (313). The outer surface of the interface deformation ring (313) is threaded to the inner surface of the fastening nut (314). A reserved groove (3130) is correspondingly opened on the outer ring surface of the interface deformation ring (313) and the insulating pad (3131).

4. The ultrasonic testing probe according to claim 1, characterized in that: The inner surface of the capsule-shaped fastener (331) is in contact with the outer surface of the wire (21). The end of the capsule-shaped fastener (331) near the braided curved probe (32) is fixedly connected to a protective sleeve (332). The protective sleeve (332) is composed of a conical sleeve one (3321) and a conical sleeve two (3322) and is integrally formed. One end of the conical sleeve one (3321) is fixedly connected to the inner surface of the connecting cover (33) and connected to one end of the capsule-shaped fastener (331). The conical sleeve two (3322) penetrates the center of the support collar (322).

5. The ultrasonic testing probe according to claim 1, characterized in that: A power connector (3412) is fixedly added to the side of the probe body (341) near the connecting cover (33). A screw connector (3413) is threadedly connected to the inner surface of the power connector (3412). A controller is provided on the inner side of the screw connector (3413). The controller is electrically connected to the wire (21).

6. A miniature endoscope for pipe welds in confined spaces, comprising an endoscope body (1), characterized in that: The endoscope body (1) includes a control module (11) and a display module (12), and also includes an ultrasonic detection probe as described in any one of claims 1-5, wherein the ultrasonic detection probe is electrically connected to the control module (11), the display module (12) and the wiring module (2) respectively.

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