Heating pipeline weld detection device

Abstract

The present invention discloses a heat supply pipe weld detection device, which relates to the field of heat supply pipe processing technology, including a conveying mechanism and a detection chamber, wherein the conveying mechanism is provided with an inverted U-shaped bracket, and the bottom wall of the horizontal section of the inverted U-shaped bracket is symmetrically slidably connected with a magnetized part in the front and back directions, the inverted U-shaped bracket is provided with a clamping part and a pretreatment mechanism, the left side of the conveying mechanism is provided with a detection chamber, and the detection chamber is provided with a transfer mechanism, a marking mechanism and a conveying mechanism 2. The present invention cooperates with a driving component and a brushing component to perform a brushing operation on the outer wall of the pipe to be inspected, thereby preventing magnetic powder, oxide scale and burrs from adhering to the surface of the pipe, causing magnetic powder aggregation caused by non-defect factors, resulting in misjudgment during inspection, and cooperates with a driving component and a flushing component to flush the pipe to prevent scraped impurities from adhering to the outer wall of the pipe to be inspected, and at the same time can perform a pre-wetting treatment to help the fluorescent magnetic suspension cover the surface of the pipe more evenly.

Description

Technical Field

[0001] The present invention relates to the technical field of heating pipeline processing, and in particular to a heating pipeline weld detection device. Background Art

[0002] Heating pipes usually work under high temperature and high pressure. If there are defects in the welds, it may cause serious safety accidents such as leakage and explosion. Weld inspection is an important link to ensure the welding quality of heating pipes. Weld inspection can identify early problems and take measures to repair them. Common weld inspection methods include: ultrasonic inspection, magnetic particle inspection and penetration inspection. Among them, magnetic particle inspection is when ferromagnetic materials are magnetized. If there are discontinuities in the material, the magnetic permeability of these areas will change, causing magnetic lines to leak out of the material, forming a "leakage magnetic field". This leakage magnetic field can attract magnetic powder particles and make them gather at the defect location.

[0003] Currently, when performing fluorescent magnetic particle inspection on heating pipes, the pipes are usually magnetized first, and then fluorescent magnetic suspension is applied to the pipes in the magnetized state or just after magnetization by spraying, so as to check whether there are magnetic traces formed by magnetic powder aggregation on the surface of the pipe welds. However, magnetic powder adhered to the fibers on the pipe surface, oxide scale and burrs, etc., can cause magnetic powder aggregation, leading to misjudgment. Directly spraying fluorescent magnetic suspension on the pipes cannot ensure that the fluorescent magnetic suspension is evenly spread on the outer wall of the pipes, which in turn prevents the magnetic powder particles from accurately gathering at the defect location. When the pipes are transferred through conveying equipment after magnetization, the conveying equipment will cause friction with the fluorescent magnetic suspension on the surface of the pipe to be inspected and the magnetic powder particles that have already gathered at the defect location, resulting in the loss of magnetic suspension and magnetic powder particles, affecting subsequent inspections. In addition, the magnetic traces on the weld surface detected after inspection are not marked, which is not conducive to subsequent sorting and repair operations.

[0004] Therefore, in order to prevent misjudgment of pipe defects, ensure uniform spreading of the magnetic suspension, and accurately mark the defect location, the present invention provides a heating pipeline weld detection device. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a heating pipeline weld detection device.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a heating pipe weld detection device, comprising a conveying mechanism and a detection chamber, the conveying mechanism is provided with an inverted U-shaped bracket, and the bottom wall of the horizontal section of the inverted U-shaped bracket is symmetrically connected to a magnetized part in a front-to-back sliding manner, the inverted U-shaped bracket is provided with a clamping part and a pretreatment mechanism, the detection chamber is provided on the left side of the conveying mechanism, and the detection chamber is provided with a transfer mechanism, a marking mechanism and a conveying mechanism 2.

[0007] The conveying mechanism includes a conveyor belt, and a loading assembly is provided on the conveyor belt, and an inverted U-shaped bracket is fixed to the fixed part on the left side of the conveyor belt; the pretreatment mechanism includes a brushing assembly for cleaning the pipeline to be inspected, a flushing assembly and a spraying assembly for evenly and comprehensively spraying the magnetic suspension on the pipeline to be inspected, and a driving assembly provided on the inverted U-shaped bracket for supporting and driving the brushing assembly, the flushing assembly and the spraying assembly, and the left and right sides of the inspection chamber are connected with light-proof doors for sliding up and down.

[0008] In the above-mentioned heating pipe weld detection device, the feeding assembly includes a base, and the base is fixedly connected to the moving part of the conveyor belt 1 at equal intervals, and the outer wall of the base on the side away from the conveyor belt 1 is connected to the feeding support seat by a spring for sliding up and down, and the upper part of the left side wall of the feeding support seat is fixedly connected to a feeding adjustment piece, and the top wall of the feeding adjustment piece is inclined to the lower left, and a U-shaped frame with an opening to the right is fixedly connected to the middle of the left side wall of the inverted U-shaped bracket, and an electric push rod is installed in the middle of the U-shaped frame, and a wedge is fixed to the right side wall of the output end of the electric push rod, and the bottom wall of the wedge is inclined to match the top wall of the feeding adjustment piece.

[0009] In the above-mentioned heating pipe weld detection device, hydraulic rods are installed on the side walls of the front and rear vertical sections of the inverted U-shaped bracket that are close to each other, and clamping parts are fixed on the side walls where the two hydraulic rods are close to each other. The clamping parts are composed of an L-shaped part fixed to the corresponding hydraulic rod and an anti-slip head on the side of the L-shaped part close to the pipe to be detected. The top wall and bottom wall of the anti-slip head are horizontal, and the left and right side walls of the anti-slip head are formed into an arrow shape by two inclined surfaces.

[0010] In the above-mentioned heating pipe weld detection device, the driving component includes a supporting slide, and the bottom wall of the horizontal section of the inverted U-shaped bracket is slidably connected to a supporting slide arranged between two magnetized parts. Motor 2 is installed on the supporting slide, and the output end of motor 2 is fixedly connected to a gear rotating on the supporting slide.

[0011] In the above-mentioned heating pipe weld detection device, the brush assembly includes a front fixed seat, and the front part of the supporting slide is fixedly connected to the front fixed seat, the front and rear side walls of the front fixed seat are both slid with a gear ring 1, and the inner wall of the gear ring 1 is evenly fixed with multiple arc-shaped brush pieces along the circumferential direction, the arc-shaped brush pieces on the two gear rings 1 are staggered, and the gear ring 1 is meshed with the gear.

[0012] In the above-mentioned heating pipe weld detection device, the flushing assembly includes a middle fixed seat, and the middle part of the support slide is fixedly connected to the middle fixed seat, the inner ring wall of the middle fixed seat is evenly fixed with multiple pairs of support plates one along the circumferential direction, and each pair of support plates one is connected with a triangular prism-shaped nozzle seat one for common rotation, the front and rear side walls of the middle fixed seat are fixedly connected with a non-closed annular splash ring with a notch facing downward, the splash ring is provided with a slot for adjusting the nozzle seat one, and the side walls of the two splash rings away from each other are both slid with a gear ring two, the gear ring two is meshed with the gear, the inner ring wall of the gear ring two is evenly fixed with multiple pushing blocks one that are compatible with the nozzle seat one along the circumferential direction, and the pushing blocks one on the two gear rings two are staggered.

[0013] In the above-mentioned heating pipe weld detection device, the spray assembly includes a rear fixed seat, and the rear part of the support slide is fixedly connected to the rear fixed seat, the inner ring wall of the rear fixed seat is evenly fixed with multiple pairs of support plates 2 in the circumferential direction, and each pair of support plates 2 is connected with a triangular prism-shaped nozzle seat 2 for common rotation, the front and rear side walls of the rear fixed seat are slidably connected with a gear ring 3, and the inner ring wall of the gear ring 3 is evenly fixed with multiple pushing blocks 2 that are compatible with the nozzle seat 2 in the circumferential direction, and the pushing blocks 2 on the two gear rings 3 are staggered.

[0014] In the above-mentioned heating pipe weld detection device, the transfer mechanism includes a transfer slide, and the interior of the detection chamber is connected to an L-shaped transfer slide that is symmetrically distributed front and back for left and right sliding movement. A slot adapted to the transfer slide is provided on the side of the transfer slide close to the clamping member, and an arc-shaped slide is connected to the slot of the transfer slide for symmetrical rotation up and down. An inner support head is connected to the two arc slides for common front and back sliding movement, and the inner support head is composed of two arc plates that are respectively connected to the two arc slides for sliding movement and a short plate fixed between the arc plates. A rectangular slider is fixedly connected to the front side short plate of the front inner support head. Motor three is installed on the front side transfer slide through an L-shaped plate, and a connecting seat that is connected to the rectangular slider for front and back sliding movement is fixedly connected to the rear side wall of the output end of motor three.

[0015] In the above-mentioned heating pipe weld detection device, the marking mechanism includes a balance bar, and two balance bars distributed on the left and right are fixedly connected between the front and rear inner walls of the detection chamber, and an ink cartridge slidably connected to the detection chamber is slid on the two balance bars, and a motor four is installed on the ink cartridge through a U-shaped part. The output end of the motor four is fixed with a marking roller rotatably connected to the inner wall of the ink cartridge through a bracket, and a monitor is installed on the top wall of the ink cartridge.

[0016] In the above-mentioned heating pipe weld detection device, the second conveying mechanism includes a second conveyor belt and a material discharge seat. The fixed part of the second conveyor belt is fixed in the detection chamber, and the moving part of the second conveyor belt is fixedly connected to multiple material discharge seats at equal intervals.

[0017] Compared with the existing technology, the advantages of the present invention are: 1. By cooperating with the driving component and the brushing component, the outer wall of the pipe to be inspected is brushed to prevent magnetic powder, oxide scale and burrs from adhering to the surface of the pipe, causing magnetic powder aggregation caused by non-defect factors, resulting in misjudgment during inspection.

[0018] 2. Through the cooperation of the driving component and the flushing component, the water nozzle sprays out the flushing liquid to flush the pipe fittings after being brushed by the arc-shaped brushing member, preventing the scraped impurities from adhering to the outer wall of the pipe fitting to be inspected. At the same time, it can perform pre-wetting treatment to help the subsequent fluorescent magnetic suspension to cover the surface of the pipe fitting more evenly.

[0019] 3. Through the cooperation of the driving component and the spraying component, the magnetic suspension nozzle swings back and forth to spray the fluorescent magnetic suspension, so that the outer wall of the pipe to be inspected after being flushed is evenly sprayed with the fluorescent magnetic suspension, thereby ensuring the accuracy of the subsequent test results.

[0020] 4. Through the coordination of the clamping parts, transfer mechanism and marking mechanism, the inner support head and the clamping parts alternately clamp the pipe internally, and the transfer slide drives the pipe to be inspected into the inspection chamber, so as to avoid the fluorescent magnetic suspension on the surface of the pipe and the magnetic powder particles that have accumulated at the defective position being scraped off when the pipe is transferred, thereby ensuring the accuracy of the subsequent inspection results; during the inspection, the marking roller marks the defective position where the fluorescent magnetic powder particles are accumulated, which is conducive to subsequent sorting and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 A schematic diagram of the overall structure.

[0023] Figure 2 This is a schematic diagram of the structure of part one of the transmission mechanism, the inverted U-shaped bracket, the clamping mechanism and the magnetizing component.

[0024] Figure 3 It is a structural diagram of the pretreatment mechanism.

[0025] Figure 4 This is a partial decomposition structural diagram of the pretreatment mechanism.

[0026] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 6 It is a structural diagram of the detection chamber, part of the transfer mechanism, the marking mechanism and the second transmission mechanism.

[0028] Figure 7 It is a structural diagram of the transfer mechanism.

[0029] Figure 8 for Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0030] Figure 9 Schematic diagram of the exploded structure of the flushing component.

[0031] Figure 10 It is a partial cross-sectional structural diagram of the flushing component.

[0032] In the figure: 1. Conveyor mechanism 1; 11. Conveyor belt 1; 12. Loading assembly; 121. Base; 122. Loading support seat; 123. Height adjustment member; 124. Electric push rod; 125. Wedge; 2. Inverted U-shaped bracket; 3. Clamping member; 4. Magnetizing member; 5. Pretreatment mechanism; 51. Driving assembly; 511. Support carriage; 512. Motor 2; 513. Gear; 52. Brush assembly; 521. Front fixed seat; 522. Gear ring 1; 523. Arc-shaped brush; 53. Flushing assembly; 531. Middle fixed seat; 532. Gear Ring two; 533, pushing block one; 534, nozzle seat one; 535, splash ring; 54, spray assembly; 541, rear fixing seat; 542, gear ring three; 543, pushing block two; 544, nozzle seat two; 6, detection chamber; 7, transfer mechanism; 71, transfer slide; 72, inner support head; 73, rectangular slider; 74, connecting seat; 75, motor three; 8, marking mechanism; 81, balance bar; 82, ink cartridge; 83, motor four; 84, marking roller; 85, monitor; 9, conveying mechanism two; 91, conveyor belt two; 92, unloading seat. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figures 1 to 2 A heating pipe weld detection device includes a conveying mechanism 1 and a detection chamber 6. The conveying mechanism 1 is provided with an inverted U-shaped bracket 2. The bottom wall of the horizontal section of the inverted U-shaped bracket 2 is symmetrically connected to a magnetized part 4 in a front-to-back sliding manner. The inverted U-shaped bracket 2 is provided with a clamping part 3 and a pretreatment mechanism 5. The left side of the conveying mechanism 1 is provided with a detection chamber 6. The left and right sides of the detection chamber 6 are slidably connected to light-shielding doors; the detection chamber 6 is provided with a transfer mechanism 7, a marking mechanism 8 and a conveying mechanism 2 9.

[0035] The pipe to be inspected is conveyed from right to left by the conveying mechanism 1. After being clamped by the clamping member 3, the magnetizing member 4 continuously magnetizes the pipe to be inspected. The pretreatment mechanism 5 performs a pretreatment operation on the pipe to be inspected from back to front by first cleaning it and then spraying it with fluorescent magnetic suspension. The transfer mechanism 7 transfers the magnetized pipe to be inspected from the clamping member 3 to the inspection chamber 6. The light-proof door on the inspection chamber 6 slides down and closes. An ultraviolet lamp is installed inside the inspection chamber 6. The transfer mechanism 7 drives the pipe to be inspected to rotate until the weld is facing downward, and the marking mechanism 8 inspects and marks the weld.

[0036] Reference Figures 1 to 2 The conveying mechanism 1 includes a conveyor belt 11, and a loading assembly 12 is provided on the conveyor belt 11. The conveyor belt 11 is an existing belt conveyor, and the inverted U-shaped bracket 2 is fixed to the left fixed part of the conveyor belt 11; the loading assembly 12 includes a base 121, and the moving part of the conveyor belt 11 is equidistantly fixedly connected with the base 121, and the outer wall of the base 121 away from the conveyor belt 11 is slidably connected to the loading support seat 122 by a spring (not shown in the figure). The upper part of the left wall of the loading support seat 122 is fixedly connected to a height adjustment member 123, and the top wall of the height adjustment member 123 is inclined to the lower left. The middle part of the left wall of the inverted U-shaped bracket 2 is fixedly connected to a U-shaped frame with an opening to the right, and an electric push rod 124 is installed in the middle of the U-shaped frame. The right side wall of the output end of the electric push rod 124 is fixed with a wedge block 125, and the bottom wall of the wedge block 125 is inclined to match the top wall of the height adjustment member 123.

[0037] Reference Figures 1 to 2 and Figure 7 The side walls of the front and rear vertical sections of the inverted U-shaped bracket 2 are both installed with hydraulic rods, and the side walls where the two hydraulic rods are close to each other are fixed with clamping parts 3. The clamping parts 3 are composed of an L-shaped part fixed to the corresponding hydraulic rod and an anti-slip head on the side of the L-shaped part close to the pipeline to be inspected. The anti-slip head can be made of rubber material. The top and bottom walls of the anti-slip head are horizontal, and the left and right side walls of the anti-slip head are formed in the shape of an arrow by two inclined surfaces.

[0038] The pipe to be inspected is placed on top of the loading support 122. As the conveyor belt 11 drives the base 121 and the pipe to be inspected from right to left, when it is transmitted to the bottom of the inverted U-shaped bracket 2, the output end of the hydraulic rod drives the clamping member 3 to extend toward the pipe to be inspected until the inclined surfaces of the two clamping members 3 clamp the front and rear ends of the pipe to be inspected from the left and right sides inside.

[0039] The right side wall of the output end of the electric push rod 124 extends to the right to drive the wedge block 125 to move. The movement of the wedge block 125 pushes the corresponding height adjustment member 123 to drive the loading support seat 122 supporting the pipe to be inspected to move downward. The loading support seat 122 no longer supports the pipe to be inspected, and at the same time avoids obstruction to the subsequent operation of the pretreatment mechanism 5. The two magnetizing parts 4 slide on the inverted U-shaped bracket 2 close to the pipe to be inspected, and magnetize the pipe to be inspected clamped by the clamping member 3.

[0040] Reference Figure 1 and Figure 3 The pretreatment mechanism 5 includes a brush assembly 52 for cleaning the pipeline to be inspected, a flushing assembly 53, a spray assembly 54 for evenly and comprehensively spraying the magnetic suspension on the pipeline to be inspected, and a driving assembly 51 arranged on the inverted U-shaped bracket 2 for supporting and driving the brush assembly 52, the flushing assembly 53, and the spray assembly 54.

[0041] Reference Figures 3 and 4 The driving component 51 includes a supporting slide 511. The bottom wall of the horizontal section of the inverted U-shaped bracket 2 is slidably connected to the supporting slide 511 arranged between the two magnetized parts 4. A motor 2 512 is installed on the supporting slide 511. The output end of the motor 2 512 is fixedly connected to a gear 513 rotating on the supporting slide 511.

[0042] Reference Figures 3 and 4 The brush assembly 52 includes a front fixed seat 521, and the front part of the supporting slide 511 is fixedly connected to the front fixed seat 521. A gear ring 522 is slidably provided on the front and rear side walls of the front fixed seat 521. A plurality of arc-shaped brush members 523 are evenly fixed on the inner wall of the gear ring 522 along the circumferential direction. The arc-shaped brush members 523 on the two gear rings 522 are staggered, and the gear ring 522 is meshed with the gear 513.

[0043] Reference Figure 3 、 Figure 4 、 Figure 9 and Figure 10The flushing assembly 53 includes a middle fixed seat 531, and the middle part of the supporting slide 511 is fixedly connected to the middle fixed seat 531. An annular liquid channel 1 is opened inside the middle fixed seat 531, and the middle fixed seat 531 is connected to the external water pipe. The inner ring wall of the middle fixed seat 531 is evenly fixed with multiple pairs of support plates 1 along the circumferential direction. A triangular prism-shaped nozzle seat 534 is connected to each pair of support plates 1 for common rotation. A water spray nozzle is installed on the nozzle seat 1 534, and the water spray nozzle is connected to the liquid channel 1 inside the middle fixed seat 531 through a flexible pipe 1; the front and rear side walls of the middle fixed seat 531 are fixedly connected A non-closed annular splash-proof ring 535 with a notch facing downward is provided with a slot for adjusting the nozzle seat 1 534. The side walls of the two splash-proof rings 535 that are away from each other are both slid with a gear ring 2 532, which is engaged with the gear 513. The inner ring wall of the gear ring 2 532 is evenly and fixedly connected with a plurality of pushing blocks 1 533 that are adapted to the nozzle seat 1 534 along the circumferential direction. The pushing blocks 1 533 on the two gear rings 532 are staggered, and one side of the pushing block 1 533 is inclined. The number of pushing blocks 1 533 on the gear ring 2 532 is half that of the nozzle seat 1 534.

[0044] Reference Figures 3 to 5 The spray assembly 54 includes a rear fixed seat 541, the rear part of the support slide 511 is fixedly connected to the rear fixed seat 541, an annular liquid channel 2 is opened inside the rear fixed seat 541, the rear fixed seat 541 is connected to the external magnetic suspension pipe, the inner ring wall of the rear fixed seat 541 is evenly fixed with multiple pairs of support plates 2 along the circumferential direction, and each pair of support plates 2 is connected to a triangular prism-shaped nozzle seat 2 544 that rotates together. A magnetic suspension nozzle is installed on the nozzle seat 2 544, and the magnetic suspension nozzle is passed through the nozzle. It is connected to the internal liquid channel 2 of the rear fixed seat 541 through a flexible pipe 2; the front and rear side walls of the rear fixed seat 541 are slidably connected with a gear ring 3 542, and the inner ring wall of the gear ring 3 542 is evenly and fixedly connected with multiple pushing blocks 2 543 adapted to the nozzle seat 2 544 along the circumferential direction. The pushing blocks 2 543 on the two gear rings 3 542 are staggered, and one side of the pushing block 2 543 is inclined. The number of pushing blocks 2 543 on the gear ring 3 542 is half of that of the nozzle seat 2 544.

[0045] The driving assembly 51 drives the brush assembly 52, the flushing assembly 53, and the spray assembly 54 to move from back to front. During the movement, the output end of the motor 2 512 rotates to drive the gear 513 to rotate, and the gear ring 1 522, the gear ring 2 532, and the gear ring 3 542 rotate accordingly. The brush assembly 52, the flushing assembly 53, and the spray assembly 54 pass through the outside of the pipe to be inspected in sequence.

[0046] When the gear ring 1 522 rotates, the gear ring 1 522 slides on the side wall of the front fixed seat 521, driving the arc-shaped brush wiping member 523 to circle around the outer wall of the pipe to be inspected. The arc-shaped brush wiping member 523 brushes the outer wall of the pipe to be inspected to prevent the rough surface of the pipe from causing magnetic powder, oxide scale and burrs to adhere to the surface fibers, which causes the magnetic powder aggregation caused by non-defect factors and leads to misjudgment as an actual defect.

[0047] When the gear ring 2 532 rotates, the gear ring 2 532 slides on the side wall of the splash ring 535, driving the pushing block 1 533 to move. During the displacement, the pushing block 1 533 pushes the front end or rear end of the corresponding nozzle seat 1 534, and the nozzle seat 1 534 tilts in the corresponding pushing direction. The pushing blocks 1 533 on the two gear rings 2 532 are staggered. The two groups of pushing blocks 1 533 corresponding to the front and rear push alternately to make the nozzle seat 1 534 tilt and swing back and forth, which helps to expand the flushing range. The splash ring 535 is provided with a slot for adjusting the corresponding nozzle seat 1 534 to prevent The anti-splash ring 535 blocks the swing of the nozzle seat 534, and the water nozzle sprays out the flushing liquid. The pipe to be inspected is brushed by the arc-shaped brushing member 523 and is flushed to prevent the scraped impurities from adhering to the outer wall of the pipe to be inspected. At the same time, it can perform pre-wetting treatment to help the subsequent fluorescent magnetic suspension to spread more evenly on the surface of the pipe. The anti-splash ring 535 prevents the sprayed flushing liquid from splashing. At the same time, in the process of moving forward, the anti-splash ring 535 can scrape the flushing liquid on the surface of the pipe, and the notch of the anti-splash ring 535 is positioned downward to facilitate the discharge of the flushing liquid and prevent the flushing liquid from accumulating.

[0048] When the gear ring three 542 rotates, the gear ring three 542 slides on the side wall of the rear fixed seat 541, driving the pushing block two 543 to move. During the displacement process, the pushing block two 543 pushes the corresponding front end or rear end of the nozzle seat two 544, and the nozzle seat two 544 tilts in the corresponding pushing direction. The pushing blocks two 543 on the two gear rings three 542 are staggered. The two groups of pushing blocks two 543 corresponding to the front and back push alternately to make the nozzle seat two 544 tilt and swing back and forth, which helps to expand the spraying range of the magnetic suspension. The magnetic suspension nozzle sprays fluorescent magnetic suspension, and the fluorescent magnetic suspension is swung and sprayed so that the outer wall of the pipe to be inspected after being washed is evenly sprayed with fluorescent magnetic suspension. The leakage magnetic field at the defect position on the pipe to be inspected can attract fluorescent magnetic powder particles, and the fluorescent magnetic powder particles gather at the defect position.

[0049] Reference Figure 1 、 Figure 6 and Figure 7The transfer mechanism 7 includes a transfer slide 71, and the interior of the inspection bin 6 is slidably connected to the left and right with an L-shaped transfer slide 71 symmetrically distributed front and back. The transfer slide 71 is provided with a slot adapted thereto on the side close to the clamping member 3. The slot of the transfer slide 71 is symmetrically connected to an arc slide (not shown in the figure) in an up and down rotation manner. The two arc slides are connected to an inner support head 72 for sliding back and forth. The inner support head 72 is composed of two arc plates slidably connected to the two arc slides respectively and a short plate fixed between the arc plates. The outer wall of the inner support head 72 close to the pipe to be inspected is chamfered, and the front side wall of the short plate of the front inner support head 72 is fixedly connected to a rectangular slider 73. The front transfer slide 71 is equipped with a motor 3 75 through an L-shaped plate, and the rear side wall of the output end of the motor 3 75 is fixedly connected to a connecting seat 74 slidably connected to the rectangular slider 73 back and forth.

[0050] Reference Figure 6 and Figure 8 The marking mechanism 8 includes a balance bar 81. Two balance bars 81 distributed on the left and right are fixedly connected between the front and rear inner walls of the detection chamber 6. An ink cartridge 82 slidably connected to the detection chamber 6 is slidably mounted on the two balance bars 81. A motor 4 83 is mounted on the ink cartridge 82 through a U-shaped piece. The output end of the motor 4 83 is fixed with a marking roller 84 rotatably connected to the inner wall of the ink cartridge 82 through a bracket. A monitor 85 is mounted on the top wall of the ink cartridge 82.

[0051] Reference Figure 1 and Figure 6 The conveying mechanism 29 includes a conveyor belt 291 and a material discharge seat 92. The conveyor belt 291 is an existing belt conveyor. Part of the conveyor belt 291 is located in the detection chamber 6. The moving part of the conveyor belt 291 is fixedly connected with multiple material discharge seats 92 at equal intervals.

[0052] When the pretreatment mechanism 5 moves forward, the magnetized parts 4 are driven by the electric slider to move away from each other and reset to avoid interference of the magnetized parts 4 with the movement of the pretreatment mechanism 5; when the outer wall of the tube to be inspected is fully sprayed with fluorescent magnetic suspension and the pretreatment mechanism 5 is no longer outside the tube to be inspected, the transfer slide 71 slides closer to the tube to be inspected, and the transfer slide 71 approaches the clamping part 3 that clamps the tube to be inspected until the clamping part 3 enters the corresponding slot on the transfer slide 71, and the side walls of the transfer slide 71 fit the front and rear ends of the tube to be inspected.

[0053] The corresponding electric slider drives the inner support head 72 to move toward the front and rear ends of the pipe to be inspected. The inner support head 72 moves into the front and rear ends of the pipe to be inspected and clamps the upper and lower parts not clamped by the clamping member 3. The clamping member 3 is then reset by the hydraulic rod, releasing the clamping member. During this process, the inner support head 72 drives the rectangular slider 73 to slide on the connecting seat 74 without leaving the connecting seat 74. The rectangular slider 73 and the connecting seat 74 ensure that the inner support head 72 always maintains a connection with the output terminal of the motor 3 75.

[0054] After the pipe to be inspected is clamped by the inner support head 72, the transfer slide 71 is driven to reset by the sliding of the electric slider, and drives the pipe to be inspected into the interior of the inspection chamber 6. The internal clamping method can avoid the fluorescent magnetic suspension and the magnetic powder particles that have accumulated on the defect position on the surface of the pipe to be inspected being scratched during the transfer by external clamping. The light-proof door of the inspection chamber 6 moves downward and closes, and the interior of the inspection chamber 6 is illuminated with ultraviolet light to ensure the light conditions in the inspection environment. The output end of the motor three 75 drives the inner support head 72, the rectangular slider 73 and the corresponding electric slider to rotate in the slot of the transfer slide 71, thereby driving the pipe to rotate until the weld on the pipe is rotated to face downward (the monitor 85 can be used to determine whether the weld has been rotated into place).

[0055] It should be noted that to prevent the curved slide on the rear transfer carriage 71 from accidentally rotating, a rubber layer can be provided on the contact surface between the curved slide and the slot, so that the curved slide can only rotate when the pipe rotates. A rubber layer can also be provided on the outer wall of the inner support head 72 to increase the friction between it and the pipe.

[0056] The ink cartridge 82 slides on the inspection chamber 6 through the drive of the corresponding electric slider, and the stability during movement is increased by the balance bar 81. During movement, the monitor 85 detects the weld of the pipe fitting, and when a defective position where fluorescent magnetic powder particles are gathered is found, the motor four 83 is controlled to rotate (this control method adopts the existing technology and is not described in detail here). The output end of the motor four 83 drives the marking roller 84 to rotate. When the marking roller 84 rotates to vertically upward, the defective position where the fluorescent magnetic powder particles are gathered is marked. When the marking roller 84 rotates to vertically downward and is located inside the ink cartridge 82, ink is added. The marked pipe fitting can show the defective position more clearly, which is conducive to subsequent repair.

[0057] The pipe fittings that have finished testing are supported by the corresponding unloading seat 92, the inner support head 72 is reset to release the clamping of the pipe fittings, and the pipe fittings are transported away from the testing area by the transport mechanism 2 9.

[0058] The magnetized member 4 , the light-shielding door on the detection chamber 6 , the supporting slide 511 , the transfer slide 71 , the inner supporting head 72 and the ink cartridge 82 are all driven by the existing electric slide.

[0059] Reference Figures 1-10 The specific operating steps of the heating pipe weld detection device are as follows: the pipe to be detected is transported from right to left through the conveying mechanism 1, the two clamping members 3 clamp the front and rear ends of the pipe to be detected, the loading support seat 122 no longer supports the pipe to be detected, and the two magnetizing members 4 slide on the inverted U-shaped bracket 2 close to the pipe to be detected to magnetize it.

[0060] The driving assembly 51 drives the brushing assembly 52, the flushing assembly 53, and the spraying assembly 54 to move from back to front. The gear 513 rotates to drive the arc-shaped brushing member 523 to brush the outer wall of the pipe to be inspected, and drives the two groups of pushing blocks 1 533 to push alternately so that the nozzle seat 1 534 tilts and swings back and forth to spray the flushing liquid. The driving group of pushing blocks 2 543 pushes alternately so that the nozzle seat 2 544 tilts and swings back and forth to spray the fluorescent magnetic suspension, completing the pretreatment operation, and the fluorescent magnetic powder particles gather at the defect position.

[0061] After the pipe to be inspected is clamped by the inner support head 72, the transfer slide 71 drives the pipe to be inspected into the inspection chamber 6, and the weld on the pipe is rotated to face downward. When the marking roller 84 is rotated to vertically upward, the defect position where the fluorescent magnetic powder particles are gathered is marked. After the inspection is completed, the pipe is transported out of the inspection area by the conveying mechanism 2 9.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A heating pipe weld inspection device, comprising a conveying mechanism for conveying and loading pipe fittings and an inspection chamber, wherein light-shielding doors are slidably connected to the left and right sides of the inspection chamber, characterized in that: The first conveying mechanism is provided with an inverted U-shaped bracket, and the bottom wall of the horizontal section of the inverted U-shaped bracket is symmetrically slidably connected to a magnetized member. The inverted U-shaped bracket is provided with a clamping member and a pre-processing mechanism. The left side of the first conveying mechanism is provided with an inspection chamber, and the inspection chamber is provided with a transfer mechanism for delivering pre-processed pipes into the inspection chamber in an internal clamping manner, a marking mechanism for marking defect locations, and a second conveying mechanism for delivering the inspected pipes. The conveying mechanism includes a conveyor belt, and a loading assembly is provided on the conveyor belt; the loading assembly includes a base, and the base is fixedly connected to the moving part of the conveyor belt at equal intervals, the outer wall of the base is connected to a loading support seat by a spring for sliding up and down, and a height adjustment member is fixedly connected to the left side of the loading support seat; The pretreatment mechanism includes a brush assembly for cleaning the pipeline to be inspected, a flushing assembly, and a spray assembly for spraying the magnetic suspension on the pipeline to be inspected, and a drive assembly provided on an inverted U-shaped bracket for supporting and driving the brush assembly, the flushing assembly, and the spray assembly; The drive assembly includes a support slide, and the bottom wall of the horizontal section of the inverted U-shaped bracket is slidably connected to the support slide arranged between the two magnetized parts. The support slide is equipped with a second motor, and the output end of the second motor is fixedly connected to a gear rotating on the support slide. The brush assembly includes a front fixed seat, and the front portion of the supporting slide is fixedly connected to the front fixed seat, and a gear ring 1 is slidably provided on the front and rear side walls of the front fixed seat, and a plurality of arc-shaped brush wiping members are evenly fixed on the inner wall of the gear ring 1 along the circumferential direction, and the arc-shaped brush wiping members on the two gear rings 1 are staggered, and the gear ring 1 is meshed with the gear; The flushing assembly includes a middle fixed seat, and the middle part of the supporting slide is fixedly connected to the middle fixed seat, the inner ring wall of the middle fixed seat is evenly fixed with multiple pairs of support plates one along the circumferential direction, and each pair of support plates one is connected to a triangular prism-shaped nozzle seat one for common rotation, the front and rear side walls of the middle fixed seat are fixedly connected with a non-closed annular splash-proof ring with a notch position facing downward, the splash-proof ring is provided with a slot for adjusting the nozzle seat one, and the side walls of the two splash-proof rings away from each other are both slid with a gear ring two, the gear ring two is meshed with the gear, the inner ring wall of the gear ring two is evenly fixed with multiple pushing blocks one that are compatible with the nozzle seat one along the circumferential direction, and the pushing blocks one on the two gear rings two are staggered; The spray assembly includes a rear fixed seat, and the rear part of the support slide is fixedly connected to the rear fixed seat, the inner ring wall of the rear fixed seat is evenly fixed with multiple pairs of support plates 2 along the circumferential direction, and each pair of support plates 2 is connected to a triangular prism-shaped spray head seat 2 for common rotation. ， The front and rear side walls of the rear fixed seat are both slidably connected with a gear ring three, and the inner ring wall of the gear ring three is evenly fixedly connected with multiple pushing blocks two that are compatible with the nozzle seat two along the circumferential direction, and the pushing blocks two on the two gear rings three are staggered.

2. A heating pipeline weld detection device according to claim 1, characterized in that: The top wall of the height adjusting member is inclined toward the lower left, and a U-shaped frame with an opening to the right is fixedly connected to the middle of the left side wall of the inverted U-shaped bracket. An electric push rod is installed in the middle of the U-shaped frame, and a wedge is fixed to the right side wall of the output end of the electric push rod, and the bottom wall of the wedge is inclined to match the top wall of the height adjusting member.

3. A heating pipeline weld detection device according to claim 1, characterized in that: The side walls of the front and rear vertical sections of the inverted U-shaped bracket are both installed with hydraulic rods, and the side walls where the two hydraulic rods are close to each other are fixed with clamping parts. The clamping parts are composed of an L-shaped part fixed to the corresponding hydraulic rod and an anti-slip head on the side of the L-shaped part close to the pipeline to be inspected. The top wall and bottom wall of the anti-slip head are horizontal, and the left and right side walls of the anti-slip head are formed into an arrow shape by two inclined surfaces.

4. A heating pipeline weld detection device according to claim 1, characterized in that: The transfer mechanism includes a transfer slide, and the interior of the detection bin is connected to an L-shaped transfer slide that is symmetrically distributed front to back and slides left and right. A slot adapted to the transfer slide is provided on the side of the transfer slide close to the clamping member, and an arc-shaped slide is connected to the slot of the transfer slide for symmetrical rotation up and down. An inner support head is connected between the two arc slides for common front-back sliding movement, and the inner support head is composed of two arc plates that are respectively connected to the two arc slides for sliding movement and a short plate that is fixed between the arc plates. A rectangular slider is fixedly connected to the front side short plate of the front inner support head. Motor three is installed on the front side transfer slide through an L-shaped plate, and a connecting seat that is connected to the front-back sliding movement of the rectangular slider is fixedly connected to the rear side wall of the output end of motor three.

5. A heating pipeline weld detection device according to claim 1, characterized in that: The marking mechanism includes a balance bar, and two balance bars distributed on the left and right are fixedly connected between the front and rear inner walls of the detection chamber. An ink cartridge slidably connected to the detection chamber is slid on the two balance bars, and a motor four is installed on the ink cartridge through a U-shaped part. The output end of the motor four is fixed with a marking roller rotatably connected to the inner wall of the ink cartridge through a bracket, and a monitor is installed on the top wall of the ink cartridge.

6. A heating pipeline weld detection device according to claim 1, characterized in that: The second conveying mechanism includes a second conveyor belt and a material unloading seat. Part of the second conveyor belt is located in the detection chamber, and the moving part of the second conveyor belt is fixedly connected to multiple material unloading seats at equal intervals.

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