Tube screen scanning device

Abstract

The invention discloses a tube screen scanning device, which comprises an installation frame and a detection structure. The detection structure comprises two probes spaced apart in a first direction, each probe is rotatably installed in the installation frame around a rotation axis extending in a second direction, the two probes can be arranged close to and far from each other in the first direction, the detection structure has an initial state and a detection state, in the initial state, the two probes are arranged close to each other, and each probe is in a first initial position, in the detection state, the two probes are far from each other, and each probe is in a first detection position, so as to abut against the side walls of the tube screen on both sides which are arranged opposite to each other in the circumferential direction, by arranging the two probes close to and far from each other, it is possible to detect tubes of different diameters in the same detection scene, and each probe can switch between different detection modes, so that it is possible to detect different defect types in the same detection scene without multiple detections.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and in particular to a tube screen scanning device. Background Art

[0002] The tube screen scanning device usually refers to a special device used in the field of industrial non-destructive testing (NDT) to check defects in the connection between tubes and tube sheets in equipment such as heat exchangers, boilers, and condensers. This equipment is mainly used to detect potential problems such as corrosion, cracks, lack of fusion, and holes in the welds between tubes and tube sheets to ensure the safe operation of these equipment. The working principle of the tube screen scanning device is to use ultrasonic testing technology. In ultrasonic testing, the probe emits high-frequency sound waves into the material. When the sound waves encounter different medium interfaces, they are reflected. By analyzing the reflected signals, it can be determined whether there are defects inside the tube.

[0003] Due to different inspection scenarios, differences in required inspection efficiency and sensitivity to defect types, the inspection technical means of the required tube screen scanning device are not the same. When the number of tube screens is large and there are multiple types of defects in the tube screens, different inspection technologies are required to repeatedly inspect the tube screens, and the inspection efficiency is extremely low. Summary of the invention

[0004] The main purpose of the present invention is to propose a tube screen scanning device, aiming to provide a tube screen scanning device that can adapt to various detection scenarios and has high detection efficiency.

[0005] To achieve the above-mentioned purpose, the tube screen scanning device proposed in the present invention comprises:

[0006] A mounting frame is arranged along a first plane formed by the first direction and the second direction; and

[0007] A detection structure, comprising two probes spaced apart in the first direction, each of the probes being rotatably mounted in the mounting frame around a rotation axis extending in the second direction, each of the probes having a first initial position and a first detection position in its rotation stroke, wherein in the first initial position, the probe extends along the first plane, and in the first detection position, the probe is arranged at an angle to the first plane;

[0008] The two probes can be arranged close to or far away from each other in the first direction, and the detection structure has an initial state and a detection state. In the initial state, the two probes are arranged close to each other, and each of the probes is in the first initial position. In the detection state, the two probes are far away from each other, and each of the probes is in the first detection position, so as to abut against the side walls on both sides of the tube panel that are arranged opposite to each other in the circumferential direction.

[0009] In one embodiment, each of the probes is slidably mounted on the mounting frame along the first direction;

[0010] The detection structure further includes a first elastic reset member disposed between the two probes, and the first elastic reset member is used for resetting the detection structure from the detection state to the initial state.

[0011] In one embodiment, the installation frame is provided with a slide groove extending along the first direction, the probe is provided with a slider slidably matched with the slide groove, and the probe is rotatably mounted on the slider around a rotation axis extending in the second direction.

[0012] In one embodiment, the detection structure further includes a second return spring, the second return spring connects the slider and the probe, and the second return spring is used to return the probe from the first detection position to the first initial position.

[0013] In one embodiment, the detection structure further includes a driving mechanism, and the driving mechanism includes:

[0014] A winding portion and two pull ropes, one end of each pull rope is fixed to the side of the probe away from the other probe, and the other end is fixed to the winding portion, the winding portion is rotatably mounted on the mounting frame, and the winding portion is used to reel in and unreel the two pull ropes during its rotation stroke, so as to switch the detection structure from the initial state to the detection state; and

[0015] The driving motor is used to drive the winding part to rotate.

[0016] In one embodiment, a wire groove is provided on the installation frame, and the wire groove is used to accommodate the two pull ropes.

[0017] In one embodiment, the tube panel scanning device further includes a detection mechanism disposed at one end of the detection structure in the second direction, the detection mechanism including:

[0018] A connecting seat connected to the installation frame;

[0019] a detection disk movably disposed relative to the connection seat to have a second initial position and a second detection position displaced relative to the connection seat by an external force, the detection disk being rotatably disposed around a rotation axis extending along a third direction; and

[0020] The detection structure comprises two detection parts respectively arranged on the connection seat and the detection plate. The detection structure is used to detect the relative displacement between the detection plate and the connection seat so as to send out a detection signal when the detection plate is in the second detection position.

[0021] In one embodiment, the detection mechanism further includes a mounting seat, the mounting seat is slidably mounted on the connecting seat along the second direction, and the detection disk is rotatably mounted on the mounting seat.

[0022] In one embodiment, the detection mechanism further includes a third elastic reset member, the third elastic reset member is connected to the detection disk and the mounting seat, and the third elastic reset member is used to provide a reset force when the detection disk rotates relative to the mounting seat, so that the detection disk is reset to the second initial position; and / or,

[0023] The detection mechanism also includes a fourth elastic reset member, which connects the connecting seat and the mounting seat. The fourth elastic reset member is used to provide a reset force when the mounting seat slides relative to the connecting seat, so that the detection disk is reset to the second initial position.

[0024] In one embodiment, the probe is provided with a magnetic attraction portion on one side facing the tube panel; and / or,

[0025] A light source is also arranged on the installation frame.

[0026] In the technical solution of the present invention, each of the probes can be rotatably arranged around a rotation axis extending in the second direction. When it is necessary to detect surface defects or the detection scene is a closed space, each of the probes is attached to the corresponding pipe, and the probe serves as both an ultrasonic transmitter and a receiver to implement pulse echo detection on the corresponding pipe. When it is necessary to detect defects (such as cracks, unfused, etc.) inside the pipe, measure wall thickness, and have high detection accuracy requirements, the two probes can be attached to the side walls of the pipe on both sides that are arranged opposite to each other in the circumferential direction, one of the probes serves as an ultrasonic transmitter, and the other probe serves as an ultrasonic receiver on the other side of the pipe to implement penetration detection. In addition, by arranging the two probes close to or far from each other, it is possible to detect pipes of different diameters in the same detection scene, and each of the probes can switch between different detection modes, so that different defect types can be detected in the same detection scene without multiple detections, so as to provide a pipe screen scanning device that can adapt to multiple detection scenes and has high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of an embodiment of a tube screen scanning device provided by the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the central tube screen scanning device in the initial state;

[0030] Figure 3 for Figure 1 Schematic diagram of the central tube screen scanning device in the detection state;

[0031] Figure 4 for Figure 1 Schematic diagram of part of the structure of the central tube screen scanning device;

[0032] Figure 5 for Figure 4 Schematic diagram of the cross section of AA;

[0033] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0034] Figure 7 for Figure 1 A side view of the central tube screen scanning device;

[0035] Figure 8 for Figure 1 Schematic diagram of the back of the central tube screen scanning device;

[0036] Fig. 9 A schematic diagram of the tube screen scanning device provided by the present invention using penetrating detection;

[0037] Fig.10 A schematic diagram of the tube screen scanning device provided by the present invention using a pulse echo method for detection;

[0038] Fig.11 A schematic diagram of the tube screen scanning device provided by the present invention using a penetrating method to detect tubes of different diameters.

[0039] Description of Figure Numbers:

[0040] 100. Tube screen scanning device; 1. Mounting frame; 1a. Slide groove; 1b. Wire groove; 2. Probe; 3. First elastic reset member; 4. Sliding block; 5. Second reset spring; 6. Driving mechanism; 61. Winding part; 62. Pull rope; 63. Driving motor; 7. Detection mechanism; 71. Connecting seat; 72. Detection disk; 73. Detection part; 74. Mounting seat; 75. Third elastic reset member; 76. Fourth elastic reset member; 8. Magnetic attraction part; 9. Light source.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The tube screen scanning device usually refers to a special device used in the field of industrial non-destructive testing (NDT) to check defects at the connection between tubes and tube sheets in equipment such as heat exchangers, boilers, and condensers. This equipment is mainly used to detect potential problems such as corrosion, cracks, lack of fusion, and holes in the welds between tubes and tube sheets to ensure the safe operation of these equipment. The working principle of the tube screen scanning device is to use ultrasonic testing technology. In ultrasonic testing, the probe emits high-frequency sound waves into the material. When the sound waves encounter different medium interfaces, they will be reflected. By analyzing the reflected signals, it can be determined whether there are defects inside the tube. Due to different detection scenarios, the difference in the required detection efficiency and the sensitivity to the defect type, the detection technical means of the tube screen scanning device are not the same. When the number of tube screens is large and there are multiple types of defects in the tube screens, different detection technologies need to be used to repeatedly detect the tube screens, and the detection efficiency is extremely low.

[0046] The present invention proposes a tube screen scanning device, aiming to provide a tube screen scanning device that can adapt to various detection scenarios and has high detection efficiency.

[0047] See also Figures 1 to 3 In one embodiment of the present invention, the tube panel scanning device 100 includes a mounting frame 1 and a detection structure, wherein the mounting frame 1 is arranged along a first plane formed by the first direction and the second direction; the detection structure includes two probes 2 arranged at intervals in the first direction, each of the probes 2 is rotatably installed in the mounting frame 1 around a rotation axis extending in the second direction, each of the probes 2 has a first initial position and a first detection position in its rotation stroke, in the first initial position, the probe 2 extends along the first plane, and in the first detection position, the probe 2 is arranged at an angle to the first plane; wherein the two probes 2 can be arranged close to and away from each other in the first direction, and the detection structure has an initial state and a detection state, in the initial state, the two probes 2 are arranged close to each other, and each of the probes 2 is in the first initial position, and in the detection state, the two probes 2 are away from each other, and each of the probes 2 is in the first detection position, so as to abut against the side walls of the tube panel on both sides which are arranged opposite to each other in the circumferential direction.

[0048] It should be noted that general tube screen inspection needs to detect defects such as corrosion, cracks, wear, lack of fusion, holes, etc. of the tube, and different defects require different detection methods. For example: when surface and near-surface defect detection is required, the pulse echo method is good at detecting defects on the surface or near the surface of the tube wall, such as cracks, corrosion or pits; penetration detection is particularly suitable for detecting defects inside the tube, such as internal cracks, incomplete welding, voids, etc., because the ultrasonic signal needs to pass through the entire tube wall, and any internal discontinuity will affect the transmission of the signal.

[0049] In preliminary inspection or rapid assessment of the overall condition of the tube, the pulse echo method can provide rapid results, so it can be used in preliminary screening or rapid inspection; when it is necessary to confirm the details of a specific defect (such as the size and location of the defect), penetrating inspection can often provide more accurate defect quantification information, and penetrating inspection can be used to obtain more accurate information.

[0050] In addition to adopting different detection methods for different defects and detection purposes of the tube, different detection methods are also needed in different detection scenarios. For example, when detection can only be performed from one side of the tube, the pulse echo method is the most suitable choice because it only needs one probe 2 to complete the task of transmitting and receiving ultrasonic waves; when both sides of the tube can be contacted, penetration detection can provide higher detection sensitivity and signal-to-noise ratio.

[0051] It should also be noted that "the second direction" is orthogonal to "the first direction", the first direction is defined as the radial direction of the probe 2 along the pipe, and the second direction is defined as the axial direction of the probe 2 along the pipe. The two probes 2 can be arranged close to or far away from each other in the first direction, which means that the position of each probe 2 in the radial direction of the pipe is adjustable. When the position of the two probes 2 in the radial direction of the pipe is adjustable, the two probes 2 can detect pipes of different diameters; "each probe 2 is rotatably installed in the installation frame 1 around a rotation axis extending in the second direction", which means that each probe 2 can rotate around the circumference of the pipe, so as to detect multiple detection points on the circumference of the pipe, and when the two probes 2 can rotate around the circumference of the pipe, they can be arranged on both sides of the pipe to realize penetrating detection.

[0052] The "initial state" is the position of the probe 2 when it is not detecting or in a standby state. The "detection state" refers to the position of the probe 2 when it is detecting. The detection structure can be switched to the detection state by manual adjustment by an operator or by moving the probe 2 by an automatic control system.

[0053] In the technical solution of the present invention, each of the probes 2 can be rotatably arranged around a rotation axis extending in the second direction. When it is necessary to detect surface defects or the detection scene is a closed space, each of the probes 2 is attached to the corresponding pipe, and the probe 2 serves as both an ultrasonic transmitter and a receiver to implement pulse echo detection on the corresponding pipe. When it is necessary to detect defects inside the pipe (such as cracks, unfused joints, etc.), measure wall thickness, and have high detection accuracy requirements, the two probes 2 can be attached to the side walls of the pipe on both sides that are arranged opposite to each other in the circumferential direction, one of the probes 2 serves as an ultrasonic transmitter, and the other probe 2 serves as an ultrasonic receiver on the other side of the pipe to implement penetration detection. In addition, by arranging the two probes 2 close to and far from each other, it is possible to detect pipes of different diameters in the same detection scene, and each of the probes 2 can switch between different detection modes, so that different defect types can be detected in the same detection scene (please refer to Figures 9 to 11 ) does not require multiple inspections, so as to provide a tube screen scanning device 100 that can adapt to a variety of inspection scenarios and has high inspection efficiency.

[0054] Specifically, since the two probes 2 are movably arranged in directions of approaching and moving away from each other, please refer to Figure 4 In this embodiment, each of the probes 2 is slidably mounted on the mounting frame 1 along the first direction; the detection structure also includes a first elastic reset member 3 arranged between the two probes 2, and the first elastic reset member 3 is used to reset the detection structure from the detection state to the initial state.

[0055] By sliding each of the probes 2 along the first direction and installing them on the installation frame 1 , it is extremely simple to adjust the position of the probe 2 , so that it can adapt to the requirements of pipes with different diameters or different detection positions.

[0056] The “first elastic reset member 3 ” may be a spring, elastic rubber, etc., and may be specifically designed according to actual conditions, and the embodiments of this specification do not limit this.

[0057] The first elastic reset member 3 is arranged between the two probes 2. When there is no external force, the detection structure can be restored to a predetermined “initial state” by the first elastic reset member 3.

[0058] By providing the first elastic reset member 3, it is ensured that the probe 2 can automatically return to the initial state after the detection is completed, which helps to simplify the operation process, improve the detection efficiency, and prevent the probe 2 from being damaged when not in operation.

[0059] In other embodiments, in order to reset the detection structure from the detection state to the initial state, two driving mechanisms 6 may be respectively provided to reset each of the probes 2. The specific design may be based on actual conditions and is not limited in this specification.

[0060] For further information, see Figures 5 and 6 In this embodiment, the installation frame 1 is provided with a slide groove 1a extending along the first direction, and the probe 2 is provided with a slider 4 that slidably cooperates with the slide groove 1a, and the probe 2 is rotatably mounted on the slider 4 around a rotation axis extending in the second direction. The slider 4 matches the slide groove 1a on the installation frame 1, so that the probe 2 can slide in the slide groove 1a through the slider 4. The design of the slider 4 ensures the sliding contact between the probe 2 and the slide groove 1a, while reducing friction, ensuring the smooth movement of the probe 2.

[0061] Since the probe 2 is rotatably mounted on the slider 4 around the rotation axis extending in the second direction, the probe 2 can rotate while sliding to meet the detection requirements of different angles, pipes of different diameters or different detection positions.

[0062] For further information, see Figure 6 In this embodiment, the detection structure also includes a second reset spring 5, which connects the slider 4 and the probe 2, and is used to reset the probe 2 from the first detection position to the first initial position.

[0063] The “second elastic reset member” may be a spring, elastic rubber, etc., and may be specifically designed according to actual conditions, and the embodiments of this specification do not limit this.

[0064] By providing the second reset spring 5, when the probe 2 rotates relative to the slider 4, the second reset spring 5 can store energy so as to release it at an appropriate time to help reset the probe 2. This ensures that the probe 2 can automatically return to the first initial position after completing the detection task without relying on external force or manual intervention. In this way, the automation of the detection process is improved, the burden on the operator is reduced, and it is also helpful to maintain the accuracy and consistency of the detection.

[0065] Of course, in other embodiments, in order to enable the probe 2 to switch between the detection position and the first initial position, the output shaft of the motor can be connected to the probe 2. The specific design can be based on actual conditions, and the embodiments of this specification do not limit this.

[0066] Specifically, see Figure 2 In this embodiment, the detection structure also includes a driving mechanism 6, which includes: a winding part 61, two pull ropes 62 and a driving motor 63, one end of each pull rope 62 is fixed to the side of the probe 2 away from the other probe 2, and the other end is fixed to the winding part 61, the winding part 61 is rotatably installed on the installation frame 1, and the winding part 61 is used to reel in and unreel the two pull ropes 62 during its rotation stroke, so as to switch the detection structure from the initial state to the detection state; the driving motor 63 is used to drive the winding part 61 to rotate.

[0067] The driving motor 63 provides power for the winding part 61, so that it can rotate as needed to realize the winding and unwinding of the pull rope 62; one end of each pull rope 62 is fixed on the probe 2, and the other end is fixed on the winding part 61. The pull rope 62 is pulled or loosened by rotating the winding part 61, thereby controlling the position of the probe 2; the winding part 61 is a rotating component, used to wind and release the pull rope 62 to control the movement of the probe 2.

[0068] One end of each of the pull ropes 62 is fixed to the side of the probe 2 away from the other probe 2, and the other end is fixed to the winding part 61, ensuring that the movement of the probe 2 can be achieved by tightening and loosening the pull rope 62. When the winding part 61 rotates, it will roll up or release the pull rope 62, and the winding and unwinding actions are controlled by the drive motor 63, so as to accurately control the movement of the probe 2. Through the control of the drive motor 63, the precise positioning and movement of the probe 2 in the detection structure are achieved, which improves the efficiency and automation level of the detection, and also reduces the need for manual operation, and enhances the stability and reliability of the detection process.

[0069] It can be understood that when the winding portion 61 is reeled in, the pull rope 62 is tightened, so that the probe 2 can be moved away from the other probe 2. At this time, the first elastic reset member 3 is deformed to store elastic potential energy. When the winding portion 61 is unreeled, the pull rope 62 is relaxed. When the first elastic reset member 3 recovers its deformation, it drives the two probes 2 closer to each other.

[0070] For further information, see Figure 2In this embodiment, a wire groove 1b is provided on the installation frame 1, and the wire groove 1b is used to accommodate the two pull ropes 62. Since the extension direction of the wire groove 1b determines the arrangement direction of the pull ropes 62, when the winding portion 61 is arranged in the middle of the installation frame 1 in the first direction, the wire groove 1b extends from the winding portion 61 along the length and width direction of the installation frame 1 until it can extend to the side of each probe 2 away from the other probe 2, and the inner wall of the wire groove 1b limits the pull rope 62, and the direction of the pulling force applied to the probe 2 is controlled by limiting the direction of the pull rope 62.

[0071] It should also be noted that when scanning the pipe screen, when the inspection scene is relatively loose and the inspector can easily hold the pipe screen scanning device 100 for manual inspection, the hand-held rod can be assembled with the pipe screen scanning device 100. When the inspection space is extremely small, the pipe screen scanning device 100 can be installed on a mobile component so that the pipe screen scanning device 100 can automatically move along the pipe to achieve automatic inspection. In order to facilitate the automatic inspection of the pipe screen scanning device 100 during the inspection process, it is necessary to identify the surrounding obstacles during its walking process, and when obstacles are detected around, the inspection route can be adjusted in time.

[0072] Further, to facilitate the detection of surrounding obstacles, please refer to Figure 3 and Figure 7 In this embodiment, the tube screen scanning device 100 also includes a detection mechanism 7 arranged at one end of the detection structure in the second direction, the detection mechanism 7 includes a connecting seat 71, a detection disk 72 and a detection structure, the connecting seat 71 is connected to the installation frame 1; the detection disk 72 is movably arranged relative to the connecting seat 71 to have a second initial position and a second detection position displaced relative to the connecting seat 71 by an external force, and the detection disk 72 is rotatably arranged around a rotation axis extending along the third direction; the detection structure includes two detection parts 73 respectively arranged on the connecting seat 71 and the detection disk 72, and the detection structure is used to detect the relative displacement between the detection disk 72 and the connecting seat 71, so as to send a detection signal when the detection disk 72 is in the second detection position.

[0073] Because the detection disk 72 is movably arranged on the connecting seat 71, and the detection disk 72 is rotatably installed relative to the connecting seat 71, when the detection disk 72 and the connecting seat 71 are relatively stationary, the detection disk 72 is in the initial position, and the detection structure will not send out a limit signal. When the detection disk 72 is subjected to forces from different directions, because the detection disk 72 has the freedom of rotation, the detection disk 72 can be displaced, thereby detecting obstacles, so that the detection disk 72 is in the detection position, and the detection structure sends out a limit signal. In this way, there is no need to use multiple unidirectional detections in multiple directions, the detection structure is relatively simple, and the cost is relatively low.

[0074] It should also be noted that the two detection parts 73 include a beam switch disposed on the connection seat 71 and a through hole disposed on the detection disk 72. When the detection disk 72 is in the initial position, the beam switch is disposed corresponding to the through hole, and the detection structure is used to send a limit signal when the beam switch and the through hole are misaligned. Specifically, the beam switch is a proximity switch installed on the connection seat 71. The proximity switch and the circular hole are aligned vertically in the second initial position. In the absence of external force, the proximity switch will not be triggered to send a limit signal; when the detection disk 72 is subjected to a positive external force, the detection disk 72 drives the mounting seat 74 to slide relative to the connection seat 71. At this time, the proximity switch and the circular hole are misaligned, and the proximity switch is triggered to send a limit signal; when the detection disk 72 is subjected to a non-positive external force, the detection disk 72 rotates relative to the connection seat 71. At this time, the proximity switch is also misaligned with the circular hole, and the proximity switch is triggered to send a limit signal.

[0075] For further information, see Figure 7 In this embodiment, the detection mechanism 7 further includes a mounting seat 74 , and the mounting seat 74 is slidably mounted on the connecting seat 71 along the second direction, and the detection disk 72 is rotatably mounted on the mounting seat 74 .

[0076] Since the tube screen scanning device 100 is most likely to be subject to obstacles in the forward direction during its movement, detection in the second direction is particularly important. By slidably mounting the mounting seat 74 on the connecting seat 71 along the second direction, when the detection plate 72 is subjected to an external force in the second direction, the detection plate 72 drives the mounting seat 74 to displace relative to the connecting seat 71 in the second direction, and at this time, the detection structure will send a detection signal.

[0077] Furthermore, in this embodiment, the detection mechanism 7 also includes a third elastic reset member 75, which connects the detection disk 72 and the mounting seat 74. The third elastic reset member 75 is used to provide a reset force when the detection disk 72 rotates relative to the mounting seat 74, so that the detection disk 72 is reset to the second initial position.

[0078] Specifically, the third elastic reset member 75 includes a first tension spring, a first boss is protruding from the surface of the detection disk 72, and a second boss is protruding from the surface of the mounting seat 74. One end of the first tension spring is connected to the first boss, and the other end is connected to the second boss. By setting the first tension spring, when the detection disk 72 rotates, the first tension spring is stretched. When the external force disappears, the stretched first tension spring restores its elastic deformation, driving the first boss on the detection disk 72 to reset, thereby resetting the detection disk 72.

[0079] Thus, by providing the third elastic reset member 75, when the detection disk 72 rotates relative to the mounting seat 74, the third elastic reset member 75 can store energy so as to release it at an appropriate time to help the detection disk 72 reset. This ensures that the detection disk 72 can automatically return to the second initial position after completing the detection task without relying on external force or manual intervention, so as to improve the automation of the detection process.

[0080] Furthermore, in this embodiment, the detection mechanism 7 also includes a fourth elastic reset member 76, which connects the connecting seat 71 and the mounting seat 74, and is used to provide a reset force when the mounting seat 74 slides relative to the connecting seat 71, so that the detection disk 72 is reset to the second initial position.

[0081] The fourth elastic reset member 76 includes a second tension spring, and a limiting protrusion is convexly provided on the connecting seat 71 to limit the movable travel of the mounting seat 74 along the main detection direction of the second direction. One end of the second tension spring is connected to the mounting seat 74, and the other end is connected to the limiting protrusion. By setting the second tension spring, when the mounting seat 74 slides due to external force, the second tension spring is compressed and elastically deformed. When the external force disappears, the compressed second tension spring restores the elastic deformation and pushes the mounting seat 74 to reset, thereby resetting the detection disk 72, which can easily achieve the reset effect.

[0082] Further, in order to make the detection part 73 fully contact with the pipe, facilitate detection, and ensure stable transmission of ultrasonic signals, please refer to Figure 5In this embodiment, a magnetic attraction portion 8 is provided on a side of the probe 2 facing the tube panel.

[0083] By providing the magnetic attraction portion 8, sufficient attraction can be generated to make the probe 2 fit tightly to the surface of the pipe, and maintain good contact even on an inclined or vertical pipe screen, so as to improve the transmission efficiency of ultrasonic or other detection signals and reduce signal attenuation or distortion caused by poor contact. During automated detection or manual operation, the magnetic attraction portion 8 can prevent the probe 2 from sliding or shaking on the pipe screen, ensuring the stability of the position of the probe 2 during the detection process. At the same time, on uneven or slightly concave and convex pipe screen surfaces, good coupling can be maintained by magnetic attraction, thereby improving the coverage and reliability of detection.

[0084] For further information, see Figure 8 In this embodiment, a light source 9 is further provided on the installation frame 1. The light source 9 may be an LED light source 9, or other types of light sources 9, which are not limited in the present invention.

[0085] By setting the light source 9, the surface of the tube panel can be illuminated, helping the operator or the visual inspection system to more clearly observe the appearance of the tube panel and find visible defects such as cracks, corrosion, wear, foreign matter, etc.; when using the visual inspection system, the light source 9 can provide uniform lighting, reduce shadows and reflections, and improve the contrast and clarity of the image, thereby improving the accuracy of defect detection; when operating in a dark or low-light environment, the light source 9 can provide the operator with necessary lighting to improve work safety.

[0086] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A tube screen scanning device, characterized in that: include: A mounting frame is arranged along a first plane formed by the first direction and the second direction; and A detection structure, comprising two probes spaced apart in the first direction, each of the probes being rotatably mounted in the mounting frame around a rotation axis extending in the second direction, each of the probes having a first initial position and a first detection position in its rotation stroke, wherein in the first initial position, the probe extends along the first plane, and in the first detection position, the probe is arranged at an angle to the first plane; The two probes can be arranged close to or far away from each other in the first direction, and the detection structure has an initial state and a detection state. In the initial state, the two probes are arranged close to each other, and each of the probes is in the first initial position. In the detection state, the two probes are far away from each other, and each of the probes is in the first detection position, so as to abut against the side walls on both sides of the tube panel that are arranged opposite to each other in the circumferential direction.

2. The tube panel scanning device according to claim 1, characterized in that: Each of the probes is slidably mounted on the mounting frame along the first direction; The detection structure further includes a first elastic reset member disposed between the two probes, and the first elastic reset member is used for resetting the detection structure from the detection state to the initial state.

3. The tube panel scanning device according to claim 2, characterized in that: The installation frame is provided with a slide groove extending along the first direction, the probe is provided with a slider slidably matched with the slide groove, and the probe is rotatably mounted on the slider around a rotation axis extending in the second direction.

4. The tube panel scanning device according to claim 3, characterized in that: The detection structure further includes a second return spring, the second return spring connects the slider and the probe, and the second return spring is used to return the probe from the first detection position to the first initial position.

5. The tube panel scanning device according to claim 1, characterized in that: The detection structure also includes a driving mechanism, and the driving mechanism includes: A winding portion and two pull ropes, one end of each pull rope is fixed to the side of the probe away from the other probe, and the other end is fixed to the winding portion, the winding portion is rotatably mounted on the mounting frame, and the winding portion is used to reel in and unreel the two pull ropes during its rotation stroke, so as to switch the detection structure from the initial state to the detection state; and The driving motor is used to drive the winding part to rotate.

6. The tube panel scanning device according to claim 5, characterized in that: A wire groove is provided on the installation frame, and the wire groove is used to accommodate the two pull ropes.

7. The tube panel scanning device according to claim 1, characterized in that: The tube panel scanning device further includes a detection mechanism disposed at one end of the detection structure in the second direction, the detection mechanism including: A connecting seat connected to the installation frame; a detection disk movably disposed relative to the connection seat to have a second initial position and a second detection position displaced relative to the connection seat by an external force, the detection disk being rotatably disposed around a rotation axis extending along a third direction; and The detection structure comprises two detection parts respectively arranged on the connection seat and the detection plate. The detection structure is used to detect the relative displacement between the detection plate and the connection seat so as to send out a detection signal when the detection plate is in the second detection position.

8. The tube panel scanning device according to claim 7, characterized in that: The detection mechanism further comprises a mounting seat, the mounting seat is slidably mounted on the connecting seat along the second direction, and the detection disk is rotatably mounted on the mounting seat.

9. The tube panel scanning device according to claim 8, characterized in that: The detection mechanism further includes a third elastic reset member, the third elastic reset member is connected to the detection disk and the mounting seat, and the third elastic reset member is used to provide a reset force when the detection disk rotates relative to the mounting seat, so that the detection disk is reset to the second initial position; and / or, The detection mechanism also includes a fourth elastic reset member, which connects the connecting seat and the mounting seat. The fourth elastic reset member is used to provide a reset force when the mounting seat slides relative to the connecting seat, so that the detection disk is reset to the second initial position.

10. The tube panel scanning device according to claim 1, characterized in that: The probe is provided with a magnetic attraction portion on one side facing the tube panel; and / or, A light source is also arranged on the installation frame.

Images