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CN-122016851-A - Optical flaw detection device and detection method for internal cracks of porcelain insulator

CN122016851ACN 122016851 ACN122016851 ACN 122016851ACN-122016851-A

Abstract

The invention discloses an optical flaw detection device and a detection method for internal cracks of a porcelain insulator, and relates to the technical field of flaw detection of porcelain insulators. According to the invention, the angle modulation detection piece is arranged, the crack detection probe main body is driven to incline by the movable swinging frame, the turntable is driven to rotate by the rotation of the third motor, the U-shaped frame is driven to horizontally move along the second screw rod by the rotation of the second screw rod by the first motor, the detection of all parts in the porcelain insulator umbrella skirt is realized by the rotation of the porcelain insulator and the intermittent movement of the crack detection probe main body, and the crack detection probe main body is driven to shoot the inner side of the porcelain insulator umbrella skirt from different angles by adjusting the inclination angle of the movable swinging frame, so that misjudgment caused by shooting at a single angle is prevented, the process does not need to repeatedly adjust and install the porcelain insulator, the operation is simple, and the detection efficiency is improved.

Inventors

  • WANG MING
  • YAN HAIBO
  • LI PENG
  • ZENG XUE

Assignees

  • 萍乡华鑫电瓷电器有限公司

Dates

Publication Date
20260512
Application Date
20260210

Claims (10)

  1. 1. The utility model provides an inside crack optical inspection device of porcelain insulator, includes mount pad (1), its characterized in that, first L type curb plate (2) are installed to the both sides of mount pad (1), butt joint picture peg (3) are pegged graft at the top of first L type curb plate (2), the top of butt joint picture peg (3) is connected with second L type curb plate (4), one side of second L type curb plate (4) is provided with spacing frame (5) that are located mount pad (1) top, block frame (50) are installed to the bottom both sides of spacing frame (5), install angle modulation detection spare on spacing frame (5), the inboard of spacing frame (5) is connected with movable rocker (6) through angle modulation detection spare, crack detection probe main part (7) are installed to the inboard of movable rocker (6), one side of crack detection probe main part (7) is provided with sensor (35), carousel (12) are installed at the top of mount pad (1), the bottom of mount pad (1) is provided with locating rack (23), the bottom of locating rack (23) is installed to the bottom of motor (51), the third carousel (12) are installed to the output of rectifying and is connected with the top (51); The angle modulation detection piece is including installing first motor (8) in second L type curb plate (4) one side, the output of first motor (8) is connected with second lead screw (36) that are located spacing frame (5) inboard, U type frame (37) have been cup jointed in the activity of the outside of second lead screw (36), first slider (15), second slider (38) are installed respectively at the both ends of U type frame (37), first slider (15), second slider (38) all with spacing frame (5) sliding connection, articulated arm (6) both sides install with first slider (15), second slider (38) swivelling joint connection's joint connection axle (17), indicating mark (19) that are located first slider (15) one side are installed to the one end of articulated arm (17), the outside of first slider (15) is provided with support frame (16), measuring ring (18) are installed to the one end of support frame (16).
  2. 2. The porcelain insulator internal crack optical inspection device according to claim 1, wherein the bottom end of the block frame (50) is rotatably connected with a plurality of balls through a rotating shaft.
  3. 3. Optical flaw detection device for internal cracks of porcelain insulators according to claim 1, characterized in that the angle measuring interlink (18) is coaxial with the centre of the snap connection shaft (17).
  4. 4. The porcelain insulator internal crack optical flaw detection device according to claim 1, wherein the angle modulation detection piece further comprises a disc (39) arranged at one end of the clamping connection shaft (17) and positioned at one side of the second sliding block (38), the clamping pin (40) is arranged at one end of the disc (39), a connecting frame (46) is fixedly connected to one side of the second sliding block (38), a third piston cylinder (45) is arranged at one side of the connecting frame (46), a second electromagnetic valve (44) is arranged at one end of the third piston cylinder (45), a second piston cylinder (43) is arranged at one end of the second electromagnetic valve (44), a straight slot sliding rail (41) is sleeved on the outer side of the clamping pin (40), a second piston rod (42) extending to the inner side of the second piston cylinder (43) is arranged at the outer wall of the straight slot sliding rail (41), an air hole (47) is formed in one end, far away from the second electromagnetic valve (44), a plate (49) is connected to the inner side of the piston of the third piston cylinder (45) in a sliding manner, and a telescopic spring (48) is arranged at one end of the third piston cylinder (45).
  5. 5. The optical flaw detection device for internal cracks of porcelain insulators according to claim 4, wherein the circle center of the disc (39) and the circle center of the bayonet (40) are in a dislocation state, and the width of the inner wall of the straight groove sliding rail (41) is equal to the diameter of the bayonet (40).
  6. 6. The porcelain insulator internal crack optical flaw detection device according to claim 4, wherein the correction locking piece comprises a clamping frame (27) installed at the top of the rotary disc (12), a positioning ring (28) is arranged at the top of the clamping frame (27), a limiting guide block (33) is installed at the top of the positioning ring (28), an extrusion rod (32) is inserted into the limiting guide block (33), a clamping plate (34) is installed at one end, close to the center of the positioning ring (28), of the extrusion rod (32), a guide rod (31) is connected to one end, far away from the clamping plate (34), of the extrusion rod (32) through a rotating shaft, a movable ring (29) located below the positioning ring (28) is arranged at one end of the guide rod (31), a second motor (24) located at one side of the clamping frame (27) is installed at the top of the rotary disc (12), a first screw rod (25) is connected to the output end of the second motor (24), and a first screw rod (25) is sleeved on the outer side of the first screw rod (26) and is arranged on the pushing frame (30).
  7. 7. The optical flaw detection device for porcelain insulators according to claim 6, characterized in that the center of the positioning ring (28), the center of the movable ring (29) and the center of the turntable (12) are coaxial.
  8. 8. The porcelain insulator internal crack optical inspection device according to claim 6, wherein the correction locking piece further comprises a first connecting plate (9) arranged on one side of a second L-shaped side plate (4), one side of the first L-shaped side plate (2) is arranged on a second side plate (11) positioned below the first connecting plate (9), a telescopic cylinder (10) is arranged at the bottom of the second side plate (11), an extension section of the telescopic cylinder (10) extends to the upper side of the second side plate (11), a first piston rod (21) is arranged at the bottom of the first connecting plate (9), a first piston cylinder (20) positioned at the outer side of the first piston rod (21) is arranged at the top of the second side plate (11), a first electromagnetic valve (22) connected with the first piston cylinder (20) is arranged at the bottom of the second side plate (2), a guide pipe (14) is connected with the bottom of the first electromagnetic valve (22), and one end of the guide pipe (14) is provided with a water storage tank (13).
  9. 9. The porcelain insulator internal crack optical inspection device according to claim 8, wherein the top of the first L-shaped side plate (2) is provided with a chute which is matched with the butt-joint plugboard (3).
  10. 10. An optical flaw detection method for internal cracks of a porcelain insulator, which is characterized by adopting the optical flaw detection device for internal cracks of the porcelain insulator according to any one of claims 1 to 9, and comprising the following steps: S1, firstly, mounting a porcelain insulator above a mounting seat (1) through a correction locking piece, enabling the inner side of an umbrella skirt of the porcelain insulator to face a limiting frame (5), and then enabling a blocking frame (50) to be attached to the porcelain insulator through downward movement of a second L-shaped side plate (4); S2, poking the movable swing frame (6) leftwards, driving the crack detection probe main body (7) to incline through the movable swing frame (6), enabling the clamping connection shaft (17) to drive the indicator (19) to rotate at the moment, judging the inclination angle of the movable swing frame (6) through the position of the indicator (19) corresponding to the angle measuring interlink (18), and accordingly performing inclination treatment on the crack detection probe main body (7) to enable illumination equipment on the crack detection probe main body (7) to be aligned to the inner side of the umbrella skirt; S3, starting a third motor (51), and rotating the turntable (12) through rotation of the third motor (51), so that the correction locking piece drives the porcelain insulator to rotate, and annular detection can be carried out on the inner side of the umbrella skirt of the porcelain insulator at the moment; S4, starting a first motor (8), driving a second screw rod (36) to rotate through the first motor (8) to enable a U-shaped frame (37) to horizontally move along the second screw rod (36), so that the distance from a crack detection probe main body (7) to the center of a porcelain insulator is changed, then carrying out annular detection on the other position of the umbrella skirt by matching with the rotation of the porcelain insulator, and realizing detection on all positions in the porcelain insulator umbrella skirt through the rotation of the porcelain insulator and the intermittent movement of the crack detection probe main body (7); S5, shooting the inner side of the porcelain insulator umbrella skirt from different angles by adjusting the inclination angle of the movable swinging frame (6) to enable the crack detection probe main body (7); and S6, removing the porcelain insulator after the detection is completed.

Description

Optical flaw detection device and detection method for internal cracks of porcelain insulator Technical Field The invention relates to the technical field of porcelain insulator flaw detection, in particular to an optical flaw detection device and a detection method for internal cracks of a porcelain insulator. Background The inner side flaw detection of the porcelain insulator is a core nondestructive detection procedure for guaranteeing the safe operation of the porcelain insulator of the power system, a suspected crack area is automatically identified by an optical detection probe matched with a visual identification sensor aiming at the detection of the inner side of the porcelain insulator umbrella skirt, so that the focus focusing of optical scanning is realized, an image identification algorithm is built in, an imaging picture of an optical lens can be analyzed in real time, cracks, porcelain body demoulding marks, dust and the like can be rapidly distinguished, the suspected crack area is automatically marked, and the detection rate of microcracks and intermittent cracks is improved. Because the interior indent formula structure that is of porcelain insulator umbrella skirt, need change repeatedly the position of porcelain insulator when detecting porcelain insulator umbrella skirt inboard this moment, just so need install repeatedly, dismantle porcelain insulator, complex operation has reduced detection efficiency, and also can influence the degree of accuracy that detects because of the unidirectional detection to the porcelain insulator inboard when detecting porcelain insulator. Disclosure of Invention The invention aims to provide an optical flaw detection device and a detection method for internal flaws of a porcelain insulator, which aim to solve the problem that quick and accurate flaw detection is inconvenient to carry out on the inner side of the porcelain insulator. The technical scheme includes that the porcelain insulator internal crack optical flaw detection device comprises a mounting seat, wherein first L-shaped side plates are mounted on two sides of the mounting seat, a butt-joint plugboard is inserted into the top of each first L-shaped side plate, a second L-shaped side plate is connected to the top of each butt-joint plugboard, a limit frame positioned above the mounting seat is arranged on one side of each second L-shaped side plate, a position blocking frame is mounted on two sides of the bottom of each limit frame, an angle modulation detection piece is mounted on each limit frame, a movable swing frame is connected to the inner side of each limit frame through the angle modulation detection piece, a crack detection probe body is mounted on the inner side of each movable swing frame, a sensor is arranged on one side of each crack detection probe body, a rotary table is mounted on the top of each mounting seat, a positioning frame is arranged on the bottom of each mounting seat, a third motor is mounted on the bottom of each positioning frame, and the output end of each third motor is connected with the bottom of each rotary table, and a correction locking piece is mounted on the top of each rotary table; The angle modulation detection piece is including installing in the first motor of second L type curb plate one side, the output of first motor is connected with the second lead screw that is located spacing frame inboard, the outside activity of second lead screw has cup jointed the U type frame, first slider, second slider are installed respectively to the both ends of U type frame, first slider, second slider all with spacing frame sliding connection, the joint connection axle with first slider, second slider rotation connection is installed to the both sides of movable swing frame, the indicator that is located first slider one side is installed to the one end of joint connection axle, the outside of first slider is provided with the support frame, the angle measurement interlink is installed to the one end of support frame. As a still further scheme of the invention, the bottom end of the position blocking frame is rotationally connected with a plurality of balls through a rotating shaft. As a still further proposal of the invention, the angle measuring interlink is coaxial with the center of the clamping connecting shaft. As a still further scheme of the invention, the angle modulation detection piece further comprises a disc which is arranged at one end of the clamping connection shaft and is positioned at one side of the second sliding block, a clamping pin is arranged at one end of the disc, one side of the second sliding block is fixedly connected with a connecting frame, one side of the connecting frame is provided with a third piston cylinder, one end of the third piston cylinder is provided with a second electromagnetic valve, one end of the second electromagnetic valve is provided with a second piston cylinder, the outer side of the clamping pin is sleeved with