Internal detection scanning device of sleeve-like structure and simulation test platform

Abstract

The invention relates to the technical field of high-pressure hydrogen storage container end socket welding seam detection, in particular to an ultrasonic internal detection scanning device of a sleeve-like structure and a simulation test platform. The ultrasonic internal detection scanning device comprises an ultrasonic phase control array probe and a connecting seat, and the ultrasonic phase control array probe is fixedly arranged at one end of the connecting seat; the ultrasonic phased array probe is electrically connected with an ultrasonic detector through a probe data line, and a probe rotating mechanism and a probe axial advancing and retreating mechanism are arranged in the connecting seat. The platform comprises a rack body, a high bottom plate and a low bottom plate are arranged on the rack body, a vertically downward simulation sleeve structure is arranged on the high bottom plate, and a vertically upward and horizontal simulation sleeve structure is arranged on the low bottom plate. Compared with the prior art, the sleeve-like structure can be comprehensively scanned without omission, the coupling property formed by the hydrogel coupling layer and the part needing to be detected is good due to elastic installation, the detection result is accurate, and the satisfactory detection effect can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure hydrogen storage container head weld detection technology, and in particular to an ultrasonic internal detection scanning device with a sleeve-like structure and a simulation test platform. Background Art

[0002] The fully multi-layer high-pressure hydrogen storage container is an important equipment for high-pressure hydrogen storage and has been widely used in hydrogen refueling stations. The fully multi-layer high-pressure hydrogen storage container has an opening with a narrow inner diameter at the top of the head. The butt weld and heat-affected zone between the forging and the double-layer hemispherical head have a single-layer structure, which is different from other parts of the container (double-layer or multi-layer). Once the defect expands, it may cause the container to rupture, which will seriously threaten the safety of equipment and personnel, and may even cause catastrophic accidents. Due to the special structure, conventional inspection equipment cannot enter.

[0003] The existing ultrasonic detection has the advantages of easy operation, high resolution, low cost, wide adaptability, and high sensitivity to the detection of area defects in thick-walled containers. Therefore, the ultrasonic probe is the most critical acoustic component in the ultrasonic imaging system. In order to obtain high-quality ultrasonic images, it is necessary to fill the ultrasonic coupling material (coupling agent water) between the probe and the inner wall of the head to reduce the influence of air on ultrasonic penetration and the acoustic impedance difference between the probe and the head, reduce the reflection loss of ultrasonic energy at this interface, and also to facilitate the probe to fit tightly and gently with the inner wall of the head, and to facilitate the rotation and movement of the probe for scanning.

[0004] However, in actual use, due to the narrow inner diameter of the head of the multi-layer high-pressure hydrogen storage container and the fact that the ultrasonic phased array probe occupies most of the space, it is very difficult to manually operate the probe externally to move or turn the scan. In addition, the small space also makes it difficult to input coupling agent water, which will lead to large deviations in the test results and it is difficult to achieve satisfactory results. Summary of the invention

[0005] The main purpose of the present invention is to overcome the deficiencies in the prior art and to provide an ultrasonic internal detection scanning device and a simulation test platform with a sleeve-like structure.

[0006] The technical solution adopted by the present invention to achieve its technical purpose is: an ultrasonic internal detection scanning device with a sleeve-like structure, including an ultrasonic phased array probe and a connecting seat; The ultrasonic phased array probe is fixedly arranged at one end of the connecting seat, and the ultrasonic phased array probe is electrically connected to the ultrasonic detector through a probe data line; The connection base is provided with a probe rotation mechanism and a probe axial advance and retreat mechanism inside, through which the ultrasonic phased array probe is controlled to rotate and advance and retreat axially respectively, so as to realize two-dimensional C scanning of the ultrasonic phased array probe.

[0007] Preferably, the ultrasonic phased array probe is fixed to the wedge block by a first screw and a probe clamping block. The wedge block is fixedly connected to the probe clamping block and is provided with a guide surface at one end thereof. The guide surface facilitates the ultrasonic phased array probe to extend into the inner wall of the container head to be detected. An ultrasonic coupling layer is fixedly provided on one side of the wedge block. The ultrasonic coupling layer is in the form of a solid film and can be used as an ultrasonic coupling material. It can see superficial tissue in an ultrasonic image and has high imaging quality. The wedge block is installed on the wedge block. Preferably, an axial hole is provided in the connecting seat, a sliding sleeve is fixedly provided in the axial hole, a main shaft rotatably connected thereto is provided in the sliding sleeve, and the main shaft is fixedly provided in the sliding sleeve via a bearing to form a rotatable connection with the sliding sleeve; Two bearings are provided, and the two bearings are separated by a bushing. The bearing at one end is positioned by a boss at one end of the main shaft, and the bearing at the other end is positioned by an elastic retaining ring and a shaft retaining ring.

[0008] Preferably, a front end platform is provided on the side wall of the boss at one end of the spindle, and the front end platform is elastically connected to the tail end of the probe clamping block through a spindle, a spring, a pressure plate and a pressure limit block; The core shaft passes through both ends of the front-end platform, and one end of it is fixed to the tail end of the probe clamping block, and the other end is fixedly connected to the pressure plate; the pressure limit block is fixed to one side of the pressure plate, and one end of it is freely plugged into the middle end of the front-end platform; the spring sleeve is arranged on the outside of one end of the core shaft, and is located between the front-end platform and the tail end of the probe clamping block.

[0009] The front end platform and the tail end of the probe clamping block are elastically connected through a spindle, a spring, a pressure plate and a pressure limit block to ensure smooth rotation of the ultrasonic phased array probe and maintain a certain pressure on the wedge block coupling, thereby ensuring that the ultrasonic coupling layer on the wedge block is always attached to the inner wall of the container head being inspected.

[0010] Preferably, the probe rotating mechanism comprises a transmission box, a driving motor, a first worm and a worm gear; The transmission box is fixedly mounted on one side of the connecting seat by a second screw, the driving motor is fixedly mounted on the transmission box, the output shaft of the driving motor is fixedly connected to the first worm, and the worm wheel is meshingly connected to the first worm; A spline groove is provided inside the worm wheel, and the worm wheel is mounted on the main shaft through a spline connection. The first worm and the worm wheel are driven to rotate by a driving motor, and the worm wheel drives the main shaft and the ultrasonic phased array probe to rotate. The rotation position of the ultrasonic phased array probe can be recorded by a rotary encoder.

[0011] Preferably, the probe axial advance and retreat mechanism comprises a third screw, an axial encoder, an axial rack, a protective cover, a gear and a servo motor; The protective cover is fixed to the gear box by a fourth screw, the axial rack is slidably connected to the inside of the protective cover, and one side of the axial rack is meshed with the gear, the shaft of the gear is fixedly connected to the output end of the servo motor, and the servo motor and the axial encoder are fixed to the inner wall of the protective cover; The servo motor drives the gear to rotate, and the gear drives the axial rack to move axially. One end of the axial rack is connected to the main shaft through a bearing to maintain rotation. The main shaft and the ultrasonic phased array probe are driven to move axially by the axial rack, while the axial rack does not rotate when the main shaft rotates. The forward and backward displacement of the ultrasonic phased array probe is recorded by the axial encoder; The first worm and the worm gear are driven to rotate by a driving motor, so that when the main shaft and the ultrasonic phased array probe rotate, the ultrasonic phased array probe can be driven to perform rotational scanning. Since the main shaft is rotationally connected to one end of the axial rack, and the axial rack is restricted by the protective cover and the gear, the axial rack and the main shaft maintain relative rotation, and when the axial rack moves, it can drive the ultrasonic phased array probe to scan forward and backward.

[0012] Preferably, the inner side wall of the ultrasonic coupling layer matches the structural shape of the wedge, the outer side wall of the ultrasonic coupling layer matches the contact surface structural shape of the inner wall of the container head and can fit tightly, and the side wall thickness of the ultrasonic coupling layer is 4 to 15 mm to avoid the ultrasonic coupling layer from being broken during the detection process; The ultrasonic coupling layer is made of hydrogel material or rubber mixed with mineral oil material; the hydrogel material is made by cross-linking with water-soluble polymer and cross-linking agent as main components; the rubber mixed with mineral oil material is made by extruding thermoplastic elastic rubber and mineral oil as main components through a screw extruder.

[0013] Preferably, the side wall of the boss at one end of the main shaft is fixedly mounted with a front end platform through a connecting component, and the ultrasonic phased array probe is fixedly mounted on the connecting seat through the setting of the connecting component; The connecting assembly comprises a T-shaped plate, a bending plate, a sliding sleeve, a guide rod, a first compression spring, a clamping block, a roller, a slide plate, a positioning rod, a clamping sleeve, a sliding seat, and a second compression spring.

[0014] One side of the T-shaped plate is fixed to the side wall of the front platform, and the two ends of the other side are fixedly installed with bending plates, a sliding sleeve is fixedly arranged inside the transverse plate part of the bending plate, and a guide rod is slidably connected inside the sliding sleeve, one end of the guide rod passes through the sliding sleeve, and the other end is externally sleeved with a first compression spring and fixedly provided with a clamping block, one end of the first compression spring is pressed against the clamping block, and the other end is pressed against the sliding sleeve; A positioning rod is provided at the middle end of the other side of the T-shaped plate, and a clamping sleeve is fixedly connected to the side wall of the boss at one end of the main shaft. By putting the clamping sleeve on the positioning rod, the clamping sleeve squeezes the clamping block to both sides, and the bottom end of the clamping sleeve and the clamping block form a clamping mechanism.

[0015] Preferably, a roller is fixedly mounted on one end of the clamping block, and the roller rolls on the T-shaped plate as the clamping block moves.

[0016] Preferably, the card block is arranged as a barb structure, and the bottom end of the ferrule is provided with an inclined surface matching the cross section of the card block, and the inclined surface of the ferrule slides along the cross section of the card block. During this sliding process, the card block is squeezed to both sides by the ferrule, and under the action of the first compression spring, the bottom end of the ferrule is squeezed and connected through the card block.

[0017] Preferably, after one end of the guide rod passes through the sliding sleeve, a baffle is fixedly sleeved on the outer wall thereof, and the movement of the guide rod is limited by the baffle, so that there is a distance between the two blocks, which can ensure that the positioning rod can pass freely.

[0018] Preferably, a slide plate is provided between the middle end of the other side of the T-shaped plate and the positioning rod, and the slide plate is provided along the transverse direction of the T-shaped plate; A slide groove is provided inside the slide groove plate and the T-shaped plate. A second compression spring is arranged inside the slide groove. One end of the second compression spring is fixed inside the slide groove, and a slide seat is fixedly arranged at the other end. The slide seat maintains a sliding connection with the slide groove, and the positioning rod is fixedly installed on the slide seat.

[0019] The present invention also provides a simulation test platform, which is applied to the above-mentioned sleeve-like structure ultrasonic internal detection scanning device: it includes a platform body, and the platform body is provided with a high bottom plate and a low bottom plate, the high bottom plate is provided with a vertically downward simulated sleeve-like structure, and the low bottom plate is provided with a vertically upward and horizontal simulated sleeve-like structure, and the height of the low bottom plate is lower than that of the high bottom plate.

[0020] Preferably, the horizontal simulated sleeve-like structure is mounted on the low base plate via a support; The support comprises a first L-shaped plate and a second L-shaped plate, wherein the first L-shaped plate and the second L-shaped plate are at right angles at their corners, and the two are overlapped and connected at the corners.

[0021] The second L-shaped plate is provided with a horizontal adjustment mechanism, and the horizontal adjustment mechanism includes a lifting slider.

[0022] The second L-shaped plate is provided with a turbine, the turbine is provided with a second worm, the second worm is provided with a threaded section, and the threaded section is provided with a lifting block.

[0023] The level adjustment mechanisms are provided in four numbers, which are respectively arranged at the four corners of the second L-shaped plate; a hexagon socket is arranged at the center of the turbine; and a level bubble is arranged on the second L-shaped plate.

[0024] Preferably, the simulation-like sleeve structure is provided with an inner hole and a flange, and an arc surface is further provided between the flange and the inner hole. The simulation-like sleeve structure is fixedly connected by the flange, bolts, nuts and supports.

[0025] Preferably, the simulation sleeve structure has a group of four elongated small holes with a diameter of φ1.5, four elongated holes with a diameter of φ2, and several auxiliary steps for facilitating the processing of the elongated small holes and elongated holes on the side close to the flange and 50 mm away from the inner wall of the inner hole.

[0026] Compared with the prior art, the present invention has the following beneficial effects: This type of sleeve-structured ultrasonic internal inspection scanning device can be operated wirelessly or wired externally through the cooperation of the probe rotation mechanism and the probe axial advance and retreat mechanism. In addition, through the coordinated setting of the encoder, it can conduct a comprehensive scan of the head without omission, avoiding the risk of missed weld inspection in traditional manual external operation.

[0027] This type of sleeve-structured ultrasonic internal detection scanning device, through the elastic installation of the ultrasonic phased array probe and the replacement of the traditional liquid ultrasonic coupling agent with a solid film of a hydrogel film, not only solves the problem of difficulty in introducing existing coupling agent water, but also the elastic installation allows the hydrogel coupling layer to have better coupling with the part to be inspected, without causing pollution to the surface of the inspected material and without generating bubbles to interfere with the detection results. As a result, the ultrasonic imaging of the hydrogel coupling layer has greatly improved clarity compared to traditional coupling agent water, making the detection results more accurate and achieving satisfactory detection effects.

[0028] This simulation test platform can simulate the three positions of the actual high-pressure hydrogen storage container head: horizontal, vertical upward, and vertical downward. By extending the ultrasonic phased array probe into the interior for inspection and scanning, it is convenient to correct the accuracy of the ultrasonic phased array probe in the simulation detection, and judge whether the ultrasonic phased array probe is damaged or whether it can operate normally, etc., and can provide certain data references when actually inspecting the head. And by setting the support to be connected by two L-shaped plates, deformation at the bend can be reduced, which may cause problems with the test results. Then, by setting a horizontal adjustment mechanism, the support is in a horizontal state when installed, so that a horizontal simulation sleeve structure can be installed later. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of the scanning device of the present invention.

[0030] Figure 2 It is a schematic diagram of the side view structure of the probe rotation mechanism.

[0031] Figure 3 It is a side view structural diagram of components such as the front end platform and the pressure limit block.

[0032] Figure 4 It is a side view schematic diagram of the structure in which the ultrasonic coupling layer is installed in the wedge block.

[0033] Figure 5 It is a schematic diagram of the main structure of the scanning device of the present invention after the connection components are installed.

[0034] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the connected components.

[0035] Figure 7 A schematic diagram of the side view structure of the connection component.

[0036] Figure 8 This is a schematic diagram of the main structure of the simulation test platform.

[0037] Fig. 9 This is a schematic diagram of the structure of the simulation test platform from a top view.

[0038] Fig.10 It is a structural schematic diagram of the simulated sleeve-like structure.

[0039] Fig.11 Schematic diagram of the simulated sleeve-like structure and support connection structure.

[0040] Fig.12 It is a schematic diagram of the structure of the elongated small hole and the auxiliary step.

[0041] Fig.13 This is a schematic diagram of the main structure of the support.

[0042] Fig.14 It is a schematic diagram of the structure of the second L-shaped plate viewed from above.

[0043] Fig.15 Schematic diagram of the top view of the second L-shaped plate.

[0044] Fig.16 It is a structural schematic diagram of the horizontal adjustment mechanism.

[0045] in: 1-ultrasonic phased array probe; 2-probe clamping block; 3-wedge block; 4-first screw; 5-probe data line; 6-front platform; 7-pressure limit block; 8-connecting seat; 9-sliding sleeve; 10-bushing; 11-bearing; 12-elastic retaining ring; 13-spindle; 14-transmission box; 15-third screw; 16-gear box; 17-axial encoder; 18-axial rack; 19-protective cover; 20-gear; 21-drive motor; 22-rotary encoder; 23-second screw; 24-shaft retaining ring; 25-spindle; 26-spring; 27-ultrasonic coupling layer; 28-guide surface; 29-ultrasonic detector; 30-fourth screw; 31-pressing plate; 32-first worm; 33-spline groove; 34-worm wheel; 3 5-servo motor; 36-T-type plate; 37-bending plate; 38-sleeve; 39-guide rod; 40-first compression spring; 41-stand body; 42-low bottom plate; 43-simulation sleeve structure; 44-high bottom plate; 45-support; 46-block; 47-flange; 48-slender small hole; 49-slender hole; 50-inner hole; 51-level bubble; 52-bolt; 53-nut; 54-auxiliary step; 55-roller; 56-slide plate; 57-positioning rod; 58-sleeve; 59-slide seat; 60-second compression spring; 61-first L-shaped plate; 62-second L-shaped plate; 620-horizontal adjustment mechanism; 621-lifting slider; 622-turbine; 623-second worm; 624-threaded section; 625-hexagon socket. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention. Example 1

[0049] See also Figure 1 , an ultrasonic internal detection scanning device of a sleeve-like structure, comprising an ultrasonic phased array probe 1 and a connecting seat 8; The ultrasonic phased array probe 1 is fixedly disposed at one end of the connection base 8, and the ultrasonic phased array probe 1 is electrically connected to the ultrasonic detector 29 via the probe data line 5; A probe rotation mechanism and a probe axial advance and retreat mechanism are provided inside the connecting seat 8 , and the probe rotation mechanism and the probe axial advance and retreat mechanism are used to respectively control the ultrasonic phased array probe 1 to rotate and advance and retreat axially, thereby realizing a two-dimensional C scan of the ultrasonic phased array probe 1 . Example 2

[0050] See also Figure 1 , 4 On the basis of the above-mentioned embodiment, in the ultrasonic internal detection scanning device of the sleeve structure, the ultrasonic phased array probe 1 is fixed on the wedge block 3 by the first screw 4 and the probe clamping block 2. The wedge block 3 is fixedly connected to the probe clamping block 2, and a guide surface 28 is provided at one end thereof. The guide surface 28 facilitates the ultrasonic phased array probe 1 to extend into the inner wall of the container head to be detected. An ultrasonic coupling layer 27 is fixedly provided on one side of the wedge block 3. The ultrasonic coupling layer 27 is in the form of a solid film and can be used as an ultrasonic coupling material. The superficial tissue can be seen in the ultrasonic image, and the imaging quality is high. The wedge block 3 is installed; The inner side wall of the ultrasonic coupling layer 27 matches the structural shape of the wedge block 3, and the outer side wall of the ultrasonic coupling layer 27 matches the contact surface structural shape of the inner wall of the container head and can fit tightly. The thickness of the side wall of the ultrasonic coupling layer 27 is 4 to 15 mm to avoid the ultrasonic coupling layer 27 from being broken during the detection process; The ultrasonic coupling layer 27 is made of hydrogel material or rubber mixed with mineral oil material; the hydrogel material is made by cross-linking with water-soluble polymer and cross-linking agent as main components; the rubber mixed with mineral oil material is made by extruding thermoplastic elastic rubber and mineral oil as main components through a screw extruder.

[0051] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 3

[0052] See also Figure 1 , 3 On the basis of the above-mentioned embodiment, in the ultrasonic internal detection scanning device of this type of sleeve structure, an axial hole is opened in the connecting seat 8, a sliding sleeve 9 is fixedly arranged in the axial hole, a main shaft 13 rotatably connected thereto is arranged in the sliding sleeve 9, and the main shaft 13 is fixedly arranged in the sliding sleeve 9 through a bearing 11, and is rotatably connected to the sliding sleeve 9; Two bearings 11 are provided, and the two bearings 11 are separated by a bushing 10 . The bearing 11 at one end is positioned by a boss at one end of the main shaft 13 , and the other end is positioned by an elastic retaining ring 12 and a shaft retaining ring 24 .

[0053] A front end platform 6 is provided on the side wall of the boss at one end of the spindle 13, and the front end platform 6 is elastically connected to the rear end of the probe clamping block 2 through a spindle 25, a spring 26, a pressure plate 31 and a pressure limit block 7; The spindle 25 passes through both ends of the front-end platform 6, and one end of it is fixed to the tail end of the probe clamping block 2, and the other end is fixedly connected to the pressure plate 31; the pressure limit block 7 is fixed to one side of the pressure plate 31, and one end of it is freely plugged into the middle end of the front-end platform 6; the spring 26 is sleeved on the outside of one end of the spindle 25, and is located between the front-end platform 6 and the tail end of the probe clamping block 2.

[0054] The front end platform 6 and the rear end of the probe clamping block 2 are elastically connected through the spindle 25, the spring 26, the pressure plate 31 and the pressure limit block 7 to ensure smooth rotation of the ultrasonic phased array probe 1 and maintain a certain pressure on the wedge block coupling, thereby ensuring that the ultrasonic coupling layer 27 on the wedge block 3 is always attached to the inner wall of the container head being inspected.

[0055] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 4

[0056] See also Figure 1-2 On the basis of the above-mentioned embodiment, in the ultrasonic internal detection scanning device of this type of sleeve structure, the probe rotation mechanism includes a transmission box 14, a drive motor 21, a first worm 32 and a worm wheel 34; The transmission box 14 is fixedly mounted on one side of the connecting seat 8 by a second screw 23, the driving motor 21 is fixedly mounted on the transmission box 14, the output shaft of the driving motor 21 is fixedly connected to the first worm 32, and the worm wheel 34 is meshingly connected to the first worm 32; a spline groove 33 is provided inside the worm wheel 34, and the worm wheel 34 is mounted on the main shaft 13 through a spline connection. The driving motor 21 drives the first worm 32 and the worm wheel 34 to rotate, and the worm wheel 34 drives the main shaft 13 and the ultrasonic phased array probe 1 to rotate, and the rotation position of the ultrasonic phased array probe 1 can be recorded by the rotary encoder 22.

[0057] The probe axial advance and retreat mechanism includes a third screw 15, an axial encoder 17, an axial rack 18, a protective cover 19, a gear 20 and a servo motor 35; The protective cover 19 is fixed to the gear box 16 by a fourth screw 30, and the axial rack 18 is slidably connected to the inside of the protective cover 19, and one side of the axial rack 18 is meshed with the gear 20, and the shaft of the gear 20 is fixedly connected to the output end of the servo motor 35, and the servo motor 35 and the axial encoder 17 are fixed to the inner wall of the protective cover 19; the servo motor 35 drives the gear 20 to rotate, and the gear 20 drives the axial rack 18 to move axially, and one end of the axial rack 18 is connected to the main shaft 13 through a bearing to maintain rotation, and the main shaft 13 and the ultrasonic phased array probe 1 are driven by the axial rack 18 to move axially, while the axial rack 18 does not rotate when the main shaft 13 rotates, and then the forward and backward displacement of the ultrasonic phased array probe 1 is recorded by the axial encoder 17; The first worm 32 and the worm wheel 34 are driven to rotate by the driving motor 21, so that when the main shaft 13 and the ultrasonic phased array probe 1 rotate, the ultrasonic phased array probe 1 can be driven to perform rotational scanning. Since the main shaft 13 is rotationally connected to one end of the axial rack 18, and the axial rack 18 is restrained by the protective cover 19 and the gear 20, the axial rack 18 and the main shaft 13 maintain relative rotation, and when the axial rack 18 moves, it can drive the ultrasonic phased array probe 1 to perform forward and backward scanning.

[0058] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 5

[0059] See also Figure 5-7 On the basis of the above-mentioned embodiments, in the ultrasonic internal detection scanning device of this type of sleeve structure, the side wall of the boss at one end of the main shaft 13 is fixedly mounted with the front end platform 6 through a connecting component, and the ultrasonic phased array probe 1 is fixedly mounted on the connecting seat 8 through the setting of the connecting component; the connecting component includes a T-plate 36, a bending plate 37, a sliding sleeve 38, a guide rod 39, a first compression spring 40, a block 46, a roller 55, a slide plate 56, a positioning rod 57, a clamping sleeve 58, a slide seat 59, and a second compression spring 60.

[0060] One side of the T-plate 36 is fixed on the side wall of the front-end platform 6, and the two ends of the other side are fixedly installed with a bending plate 37. A sliding sleeve 38 is fixedly arranged inside the transverse plate part of the bending plate 37, and a guide rod 39 is slidably connected inside the sliding sleeve 38. One end of the guide rod 39 passes through the sliding sleeve 38. After one end of the guide rod 39 passes through the sliding sleeve 38, a baffle is fixedly sleeved on its outer wall, and the movement of the guide rod 39 is limited by the baffle, so that there is a distance between the two blocks 46, which can ensure that the positioning rod 57 can pass freely; the other end is sleeved on the outside with a first compression spring 40, and a block 46 is fixedly arranged, one end of the first compression spring 40 presses on the block 46, and the other end presses on the sliding sleeve 38; one end of the block 46 is fixedly installed with a roller 55, and the roller 55 rolls on the T-plate 36 as the block 46 moves.

[0061] A positioning rod 57 is provided at the middle end of the other side of the T-shaped plate 36, and a clamping sleeve 58 is fixedly connected to the side wall of the boss at one end of the main shaft 13. By sleeved on the positioning rod 57, the clamping sleeve 58 squeezes the clamping block 46 to both sides, and the bottom end of the clamping sleeve 58 forms a clamping mechanism with the clamping block 46.

[0062] Furthermore, in the present embodiment, the block 46 is configured as a barb structure, and the bottom end of the sleeve 58 is provided with an inclined surface that matches the cross-section of the block 46, and the inclined surface of the sleeve 58 slides along the cross-section of the block 46. During this sliding process, the block 46 is squeezed to both sides by the sleeve 58, and under the action of the first compression spring 40, the bottom end of the sleeve 58 is squeezed and connected through the block 46.

[0063] Further, in the present embodiment, a slide plate 56 is provided between the middle end of the other side of the T-shaped plate 36 and the positioning rod 57, and the slide plate 56 is provided along the transverse direction of the T-shaped plate 36; a slide groove is provided inside the slide plate 56 and the T-shaped plate 36, and a second compression spring 60 is provided inside the slide groove, one end of the second compression spring 60 is fixed inside the slide groove, and a slide seat 59 is fixedly provided at the other end, and the slide seat 59 maintains a sliding connection with the slide groove, and the positioning rod 57 is fixedly installed on the slide seat 59; After the bottom end of the ferrule 58 is engaged with the block 46, in order to facilitate the removal of the ferrule 58, the ferrule 58 is moved, and the ferrule 58 brings the positioning rod 57 and the slide 59 to move laterally along the slide plate 56, so that the ferrule 58 is released from the restriction of the block 46 in the horizontal direction, so that the ferrule 58 can be removed, and then the positioning rod 57 is reset with the slide 59 and the positioning rod 57 under the action of the second compression spring 60.

[0064] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 6

[0065] See also Figure 7-11On the basis of the above-mentioned embodiment, the embodiment of the present invention further provides a simulation test platform, which is applied to the above-mentioned sleeve-like structure ultrasonic internal detection scanning device: it includes a stand body 41, and a high bottom plate 44 and a low bottom plate 42 are arranged on the stand body 41. A vertically downward simulated sleeve-like structure 43 is arranged on the high bottom plate 44, and a vertically upward and horizontal simulated sleeve-like structure 43 is arranged on the low bottom plate 42. The height of the simulated sleeve-like structure is consistent with the actual head height, and the height of the low bottom plate 42 is lower than that of the high bottom plate 44, which is more convenient for operation.

[0066] In the actual process, the height of the low bottom plate 42 is set to 870mm from the ground and the length is set to 680mm, the height of the high bottom plate 44 is set to 1130mm and the length is set to 460mm, and the main material of the stand is 6061 aluminum alloy. When the simulation sleeve structure 43 is placed horizontally, the horizontal length is 230mm and the diameter is 168mm, and the main material is stainless steel 316L.

[0067] Further, in this embodiment, the horizontal simulation sleeve-like structure 43 is installed on the low bottom plate 42 through a support 45. The horizontally placed simulation sleeve-like structure 43 cannot be fixed directly, and a support 45 is required for fixing, and the support 46 is made of 6061 aluminum alloy.

[0068] Furthermore, in this embodiment, the simulation sleeve structure 43 is provided with an inner hole 50 and a flange 47, and the simulation sleeve structure 43 is fixedly connected with the flange 47, bolts 52, nuts 53 and the support 45. The diameter of the flange 47 is 240 mm, and the bolts 52 and nuts 53 are both made of stainless steel.

[0069] Furthermore, in this embodiment, the simulated sleeve structure 43 has a group of four elongated small holes 48 with a diameter of φ1.5, four elongated holes 49 with a diameter of φ2, and several auxiliary steps 54 for facilitating the processing of the elongated small holes 48 and the elongated holes 49 on the side close to the flange 47 and 50 mm away from the inner wall of the inner hole 50.

[0070] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 7

[0071] See also Figure 12-16 On the basis of the above embodiment, the simulation test platform, since the weight of the simulated sleeve-like structure 43 is about 32kg, when it is fixed on the support 45 for a long time, the support may be deformed. The cross section of the general support 45 is an L-shaped bend. In order to prevent deformation at the bend, a connecting strip is usually provided between the two sides, but this will affect the installation of the simulated sleeve-like structure 43.

[0072] The support 45 includes a first L-shaped plate 61 and a second L-shaped plate 62. The first L-shaped plate 61 and the second L-shaped plate 62 have a right angle at the corner and overlap and connect at the corner. The two L-shaped plates are fixed by bolts. Since the corner is composed of two plates, it is not easy to deform.

[0073] The second L-shaped plate 62 is provided with a level adjustment mechanism 620, which includes a lifting slider 621. The second L-shaped plate 62 is provided with a turbine 622, and a second worm 623 is provided on the turbine 622. The second worm 623 is provided with a threaded section 624, and a lifting block 621 is provided on the threaded section 624. Four level adjustment mechanisms 620 are provided, which are respectively provided at the four corners of the second L-shaped plate 62. The center of the turbine 622 is provided with a hexagon socket 625; the second L-shaped plate 62 is provided with a level bubble 51.

[0074] Since the surface of the simulation test platform may not be horizontal during installation or long-term use, and whether the simulation sleeve structure 43 is placed horizontally will affect the test structure, it needs to be kept horizontal when installing the support.

[0075] When installing the support, first check whether it is in a horizontal position through the level bubble. If it is not in a horizontal position, you can rotate the turbine 622. The turbine 622 can be electrically controlled or manually rotate the hexagon socket 625. The turbine 622 drives the second worm 623 to rotate and achieve a self-locking function. During the rotation process, the worm 623 drives the lifting slider 621 to rise and fall on the threaded section 624, and the level bubble 51 can be fine-tuned to be in a horizontal position.

[0076] It should be noted that although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures, equivalent processes or equivalent functional transformations made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. An ultrasonic internal detection scanning device with a sleeve-like structure, characterized in that: It comprises an ultrasonic phased array probe (1) and a connecting seat (8); The ultrasonic phased array probe (1) is fixedly arranged at one end of the connecting seat (8), and the ultrasonic phased array probe (1) is electrically connected to an ultrasonic detector (29) via a probe data line (5); A probe rotation mechanism and a probe axial advance and retreat mechanism are arranged inside the connection seat (8), and the probe rotation mechanism and the probe axial advance and retreat mechanism are used to respectively control the ultrasonic phased array probe (1) to rotate and advance and retreat axially, thereby realizing a two-dimensional C scan of the ultrasonic phased array probe (1).

2. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 1, characterized in that: The ultrasonic phased array probe (1) is fixed to the wedge block (3) via a first screw (4) and a probe clamping block (2); the wedge block (3) is fixedly connected to the probe clamping block (2) and has a guide surface (28) at one end; and an ultrasonic coupling layer (27) is fixedly provided on one side of the wedge block (3).

3. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 2, characterized in that: An axial hole is formed in the connecting seat (8), a sliding sleeve (9) is fixedly disposed in the axial hole, a main shaft (13) rotatably connected thereto is disposed in the sliding sleeve (9), and the main shaft (13) is fixedly disposed in the sliding sleeve (9) via a bearing (11) to form a rotatable connection with the sliding sleeve (9); Two bearings (11) are provided, and the two bearings (11) are separated by a bushing (10). The bearing (11) at one end is positioned by a boss at one end of the main shaft (13), and the other end is positioned by providing an elastic retaining ring (12) and a shaft retaining ring (24).

4. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 3, characterized in that: A front end platform (6) is provided on the side wall of the boss at one end of the main shaft (13), and the front end platform (6) is elastically connected to the rear end of the probe clamping block (2) via a spindle (25), a spring (26), a pressure plate (31) and a pressure limit block (7); The spindle (25) passes through both ends of the front platform (6), and one end of the spindle is fixed to the rear end of the probe clamping block (2), and the other end is fixedly connected to the pressure plate (31); the pressure limit block (7) is fixed to one side of the pressure plate (31), and one end of the pressure limit block (7) is freely plugged into the middle end of the front platform (6); the spring (26) is sleeved on the outside of one end of the spindle (25), and is located between the front platform (6) and the rear end of the probe clamping block (2).

5. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 3, characterized in that: The probe rotating mechanism comprises a transmission box (14), a driving motor (21), a first worm (32) and a worm wheel (34); The transmission box (14) is fixedly mounted on one side of the connecting seat (8) by means of a second screw (23); the drive motor (21) is fixedly mounted on the transmission box (14); the output shaft of the drive motor (21) is fixedly connected to the first worm (32); and the worm wheel (34) is meshingly connected to the first worm (32); A spline groove (33) is provided inside the worm wheel (34), and the worm wheel (34) is mounted on the main shaft (13) through a spline connection.

6. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 5, characterized in that: The probe axial advance and retreat mechanism comprises a third screw (15), an axial encoder (17), an axial rack (18), a protective cover (19), a gear (20) and a servo motor (35); The protective cover (19) is fixed to the gear box (16) by a fourth screw (30); the axial rack (18) is slidably connected to the inside of the protective cover (19) and one side of the axial rack is meshed with the gear (20); the shaft of the gear (20) is fixedly connected to the output end of the servo motor (35); and the servo motor (35) and the axial encoder (17) are fixed to the inner wall of the protective cover (19); The gear (20) is driven to rotate by a servo motor (35), and the gear (20) drives the axial rack (18) to move axially. One end of the axial rack (18) is connected to the main shaft (13) for rotation via a bearing. The main shaft (13) and the ultrasonic phased array probe (1) are driven to move axially by the axial rack (18), and the forward and backward displacement of the ultrasonic phased array probe (1) is recorded by an axial encoder (17).

7. The ultrasonic internal detection scanning device of a sleeve-like structure according to claim 2, characterized in that: The inner side wall of the ultrasonic coupling layer (27) matches the structural shape of the wedge block (3), the outer side wall of the ultrasonic coupling layer (27) matches the contact surface structural shape of the inner wall of the container head and can fit tightly, and the thickness of the side wall of the ultrasonic coupling layer (27) is 4 to 15 mm; The ultrasonic coupling layer (27) is made of a hydrogel material or a rubber mixed with a mineral oil material.

8. A simulation test platform, applied to the ultrasonic internal detection scanning device of the sleeve-like structure according to any one of claims 1 to 7, characterized in that: The platform comprises a stand body (41), wherein a high bottom plate (44) and a low bottom plate (42) are arranged on the stand body (41), wherein a simulation sleeve-like structure (43) extending vertically downward is arranged on the high bottom plate (44), and a simulation sleeve-like structure (43) extending vertically upward and horizontally is arranged on the low bottom plate (42), and the low bottom plate (42) is lower in height than the high bottom plate (44).

Images