An X-ray flaw detector

Abstract

The present invention relates to the technical field of flaw detectors, and in particular to an X-ray flaw detector, comprising a base, wherein universal wheels are rotatably mounted at the four corners of the bottom of the base, a mounting frame is fixedly mounted on the top of the base, a translation mechanism is mounted on the inner side of the mounting frame, and a flaw detection component is mounted on the translation mechanism for flaw detection of pipe fittings; a positioning mechanism is mounted on the top of the base for positioning and mounting the pipe fittings; the present invention enables the flaw detection component to move axially along the pipe fitting to perform flaw detection on a large range thereof, thereby greatly improving flaw detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of flaw detectors, in particular to an X-ray flaw detector. Background Art

[0002] X-ray flaw detectors are a nondestructive testing method that uses the properties of X-rays penetrating and attenuating materials to detect defects. X-rays can detect internal defects in metals and non-metallic materials and their products, such as volumetric defects such as porosity, slag inclusions, and incomplete penetration in welds. An industrial X-ray flaw detector is a general term for equipment that performs X-ray photography or cross-sectional inspection of an object's internal structure, including the X-ray tube assembly, control box, and connecting cables. However, when inspecting welds on pipelines, which are circular in shape and larger than the X-ray flaw detector's range, multiple X-ray flaw detectors are required, requiring constant adjustment, which is inconvenient.

[0003] In this regard, Chinese patent publication number CN202123190205.5 discloses “an industrial X-ray flaw detector for pipeline weld inspection, comprising an X-ray flaw detector body and a base plate, wherein a slide is fixedly connected to the upper surface of the base plate, a semicircular slide rail is provided on the right side of the slide, a semicircular movable groove corresponding to the semicircular slide rail is opened on the right side of the slide, an annular movable assembly is provided on the semicircular slide rail, and the annular movable assembly includes an annular worm gear connected to the outer wall of the semicircular slide rail”;

[0004] This patent uses a first motor to drive the worm to rotate, the worm drives the annular worm gear to rotate, the annular worm gear drives the semicircular slide rail to rotate, and the semicircular slide rail drives the X-ray flaw detector body to rotate, so that the X-ray flaw detector body rotates half a circle to detect flaws in the pipeline; however, some pipelines are welded together by multiple pipe fittings, which results in multiple welds in the axial direction of the pipe fittings. When the length of the pipeline exceeds the detection range of the X-ray flaw detector body, the X-ray flaw detector body cannot perform comprehensive flaw detection on the pipe fittings. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcoming in the prior art that it is unable to automatically detect flaws along the axial direction of the pipeline, and to propose an X-ray flaw detector.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An X-ray flaw detector is designed, comprising a base, wherein universal wheels are rotatably mounted on the four corners of the bottom of the base, a mounting frame is fixedly mounted on the top of the base, a translation mechanism is mounted on the inner side of the mounting frame, and a flaw detection component is mounted on the translation mechanism to perform flaw detection on pipe fittings; a positioning mechanism is mounted on the top of the base to position and install the pipe fittings.

[0008] Preferably, the translation mechanism includes a screw rod, a first movable seat, a first motor, a guide rod, a second movable seat and a guide member; the screw rod is rotatably mounted on the top of the base, the first movable seat is threadedly mounted on the screw rod, the first motor is fixedly mounted on one end of the base, and the output shaft is fixedly connected to the screw rod, the guide rod is fixedly mounted on the top of the mounting frame and is arranged parallel to the screw rod, the second movable seat is slidably mounted on the guide rod, and the guide member is mounted between the first movable seat and the second movable seat.

[0009] Preferably, a guide rail matching the first movable seat is fixedly mounted on the top of the base, and the bottom end of the first movable seat is slidably connected to the guide rail.

[0010] Preferably, the guide member includes an arc-shaped guide plate and an arc-shaped rack; the arc-shaped guide plate is fixedly installed between the first movable seat and the second movable seat, the arc-shaped rack is fixedly installed between the first movable seat and the second movable seat, and is arranged parallel to the arc-shaped guide plate, a guide groove is provided on the arc-shaped guide plate, and the flaw detection component is installed in the guide groove.

[0011] Preferably, the flaw detection assembly includes a slider, a first mounting seat, a rolling gear and a second motor; the slider is slidably mounted in the guide groove, one end of the slider is fixedly connected to the first mounting seat, the rolling gear is rotatably mounted on the inner side of the first mounting seat and meshes with the arc-shaped rack, and the second motor is fixedly mounted on the outer side of the first mounting seat, and the output shaft is fixedly connected to the rolling gear.

[0012] Preferably, the flaw detection assembly also includes a second mounting seat, a rotating seat, a first cylinder and an X-ray flaw detection module; the second mounting seat is fixedly mounted on the other end of the slider, one end of the rotating seat is rotatably mounted on the inner side of the second mounting seat, the other end of the rotating seat is fixedly connected to the first cylinder, and the X-ray flaw detection module is fixedly mounted on the output end of the first cylinder.

[0013] Preferably, the flaw detection assembly also includes a transmission part, which includes an incomplete gear, a transmission gear and a coil spring; the incomplete gear is coaxially fixedly connected to the rolling gear, the transmission gear is coaxially fixedly connected to the rotating seat and intermittently meshes with the incomplete gear, and the coil spring is sleeved on the rotating shaft of the transmission gear, one end of the coil spring is fixedly connected to the second mounting seat, and the other end of the coil spring is fixedly connected to the transmission gear.

[0014] Preferably, the positioning mechanism includes two fixed seats, two rotating cylinders, two second cylinders, two clamps and two placement seats; the two fixed seats are respectively fixedly mounted on the two ends of the base, the two rotating cylinders pass through the corresponding fixed seats and are rotatably connected to the fixed seats, the two second cylinders are respectively fixedly mounted on the tops of the two rotating cylinders, the two clamps are respectively fixed on the output ends of the two second cylinders and are located on the inner side of the rotating cylinder, and the two placement seats are respectively fixedly mounted on the inner sides of the two rotating cylinders.

[0015] Preferably, a driving member is installed on one of the fixed seats, and the driving member includes a third motor, a driving gear and a ring gear; the third motor is fixedly mounted on the fixed seat, the driving gear is fixedly mounted on the output shaft of the third motor, and the ring gear is fixedly mounted on the end of the rotating cylinder and meshes with the driving gear.

[0016] The X-ray flaw detector proposed by the present invention has the following beneficial effects: the pipe is installed through a positioning mechanism, and then the first motor is started to rotate the screw, so that the first movable seat moves along the guide rail, and at the same time the second movable seats move synchronously along the guide rod, thereby causing the arc guide plate and the arc rack to move axially along the pipe, and thus the flaw detection component moves axially along the pipe to perform flaw detection on a large range, which can greatly improve the flaw detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an X-ray flaw detector proposed by the present invention;

[0018] Figure 2 This is a schematic structural diagram of a translation mechanism of an X-ray flaw detector proposed by the present invention;

[0019] Figure 3 This is a structural schematic diagram of a guide member of an X-ray flaw detector proposed by the present invention;

[0020] Figure 4 This is a schematic structural diagram of a flaw detection assembly of an X-ray flaw detector proposed by the present invention;

[0021] Figure 5 This is a schematic structural diagram of a transmission component of an X-ray flaw detector proposed by the present invention;

[0022] Figure 6 This is a structural schematic diagram of a positioning mechanism of an X-ray flaw detector proposed by the present invention;

[0023] Figure 7 This is a schematic structural diagram of a driving component of an X-ray flaw detector proposed by the present invention.

[0024] In the figure: base 1, universal wheel 2, mounting frame 3, translation mechanism 4, screw 41, first movable seat 42, first motor 43, guide rail 44, guide rod 45, second movable seat 46, guide member 47, arc guide plate 471, arc rack 472, guide groove 473, flaw detection assembly 5, slider 51, first mounting seat 52, rolling gear 53, second motor 54, second mounting seat 55, rotating seat 56, first cylinder 57, X-ray flaw detection module 58, transmission member 59, incomplete gear 591, transmission gear 592, coil spring 593, positioning mechanism 6, fixed seat 61, rotating cylinder 62, second cylinder 63, splint 64, placement seat 65, driving member 66, third motor 661, driving gear 662, ring gear 663. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1:

[0027] Reference Figure 1-3 An X-ray flaw detector includes a base 1, and universal wheels 2 are rotatably installed at the four corners of the bottom of the base 1. A mounting frame 3 is fixedly installed on the top of the base 1, and a translation mechanism 4 is installed on the inner side of the mounting frame 3. A flaw detection component 5 is installed on the translation mechanism 4 to perform flaw detection on pipe fittings; a positioning mechanism 6 is installed on the top of the base 1 to position and install the pipe fittings.

[0028] The translation mechanism 4 includes a screw rod 41, a first movable seat 42, a first motor 43, a guide rod 45, a second movable seat 46 and a guide member 47; the screw rod 41 is rotatably mounted on the top of the base 1, the first movable seat 42 is threadedly mounted on the screw rod 41, the first motor 43 is fixedly mounted on one end of the base 1, and the output shaft is fixedly connected to the screw rod 41, the guide rod 45 is fixedly mounted on the top of the mounting frame 3 and is arranged parallel to the screw rod 41, the second movable seat 46 is slidably mounted on the guide rod 45, and the guide member 47 is installed between the first movable seat 42 and the second movable seat 46; a guide rail 44 matching the first movable seat 42 is fixedly mounted on the top of the base 1, and the bottom end of the first movable seat 42 is slidably connected to the guide rail 44.

[0029] The guide member 47 includes an arcuate guide plate 471 and an arcuate rack 472; the arcuate guide plate 471 is fixedly installed between the first movable seat 42 and the second movable seat 46, and the arcuate rack 472 is fixedly installed between the first movable seat 42 and the second movable seat 46, and is arranged parallel to the arcuate guide plate 471. A guide groove 473 is provided on the arcuate guide plate 471, and the flaw detection component 5 is installed in the guide groove 473.

[0030] Working principle: During operation, the pipe is installed through the positioning mechanism 6, and then the first motor 43 is started to rotate the screw 41, so that the first movable seat 42 moves along the guide rail 44, and at the same time, the second movable seats 46 move synchronously along the guide rod 45, thereby making the arc guide plate 471 and the arc rack 472 move along the axial direction of the pipe, which also makes the flaw detection component 5 move along the axial direction of the pipe to perform flaw detection on a large range, which can greatly improve the flaw detection efficiency.

[0031] Example 2:

[0032] In Example 1, the flaw detection assembly 5 moves along the axial direction of the pipe for flaw detection. Since the weld on the pipe is annular, when the size of the pipe is larger than the search range of the flaw detection assembly 5, the pipe cannot be fully inspected.

[0033] Reference Figure 1-5 As another preferred embodiment of the present invention, the difference from Example 1 is that the flaw detection assembly 5 includes a slider 51, a first mounting seat 52, a rolling gear 53, a second motor 54, a second mounting seat 55, a rotating seat 56, a first cylinder 57, an X-ray flaw detection module 58 and a transmission member 59; the slider 51 is slidably mounted in the guide groove 473, one end of the slider 51 is fixedly connected to the first mounting seat 52, the rolling gear 53 is rotatably mounted on the inner side of the first mounting seat 52 and meshes with the arc-shaped rack 472, the second motor 54 is fixedly mounted on the outer side of the first mounting seat 52, and the output shaft is fixedly connected to the rolling gear 53; the second mounting seat 55 is fixedly mounted on the other end of the slider 51, one end of the rotating seat 56 is rotatably mounted on the inner side of the second mounting seat 55, the other end of the rotating seat 56 is fixedly connected to the first cylinder 57, and the X-ray flaw detection module 58 is fixedly mounted on the output end of the first cylinder 57.

[0034] The transmission member 59 includes an incomplete gear 591, a transmission gear 592 and a coil spring 593; the incomplete gear 591 is coaxially fixedly connected to the rolling gear 53, the transmission gear 592 is coaxially fixedly connected to the rotating seat 56 and intermittently meshes with the incomplete gear 591, and the coil spring 593 is sleeved on the rotating shaft of the transmission gear 592, one end of the coil spring 593 is fixedly connected to the second mounting seat 55, and the other end of the coil spring 593 is fixedly connected to the transmission gear 592.

[0035] Working principle: During operation, the pipe is installed through the positioning mechanism 6, and then the first motor 43 is started to rotate the screw 41, thereby causing the first movable seat 42 to move along the guide rail 44. At the same time, the second movable seats 46 move synchronously along the guide rod 45, thereby causing the arc guide plate 471 and the arc rack 472 to move axially along the pipe, thereby causing the flaw detection assembly 5 to move axially along the pipe to detect flaws in a large range.

[0036] At the same time, the second motor 54 is started to rotate the rolling gear 53, thereby causing the rolling gear 53 to roll along the arc-shaped rack 472, which in turn causes the slider 51 to slide along the guide groove 473, thereby causing the X-ray flaw detection module 58 to move in an arc shape. This allows the X-ray flaw detection module 58 to detect flaws in the circumference of the pipe, thereby greatly increasing the detection range of the pipe.

[0037] When the rolling gear rotates, it drives the incomplete gear 591 to rotate. When the incomplete gear 591 is engaged with the transmission gear 592, the transmission gear 592 drives the rotating seat 56 to rotate. At the same time, the coil spring 593 is wound and accumulates elastic potential energy. When the incomplete gear 591 is disengaged from the transmission gear 592, the coil spring 593 releases the potential energy to make the rotating seat 56 rotate in the opposite direction. In this cycle, the rotating seat 56 will realize periodic reciprocating swing, thereby making the X-ray flaw detection module 58 swing back and forth, which further improves the search range of the X-ray flaw detection module 58.

[0038] Example 3:

[0039] In Example 1 or Example 2, the X-ray flaw detection module 58 can move along the circumference of the pipe for flaw detection, but the axial movement of the X-ray flaw detection module 58 can only be circular movement. When the diameter of the pipe is large, the X-ray flaw detection module 58 can only perform flaw detection of a certain arc on the pipe, and there is a local blind spot in the detection.

[0040] Reference Figure 1-7 As another preferred embodiment of the present invention, the difference from embodiment 1 or embodiment 2 lies in that the positioning mechanism 6 includes two fixed seats 61, two rotating cylinders 62, two second cylinders 63, two clamping plates 64 and two placement seats 65; the two fixed seats 61 are respectively fixedly mounted on both ends of the base 1, the two rotating cylinders 62 pass through the corresponding fixed seats 61 and are rotatably connected to the fixed seats 61, the two second cylinders 63 are respectively fixedly mounted on the tops of the two rotating cylinders 62, the two clamping plates 64 are respectively fixed to the output ends of the two second cylinders 63 and are located inside the rotating cylinders 62, and the two placement seats 65 are respectively fixedly mounted on the insides of the two rotating cylinders 62;

[0041] A driving member 66 is installed on one of the fixed seats 61, and the driving member 66 includes a third motor 661, a driving gear 662 and a ring gear 663; the third motor 661 is fixedly mounted on the fixed seat 61, the driving gear 662 is fixedly mounted on the output shaft of the third motor 661, and the ring gear 663 is fixedly mounted on the end of the rotating cylinder 62 and meshes with the driving gear 662.

[0042] Working principle: During operation, the pipe is installed through the positioning mechanism 6, and then the first motor 43 is started to rotate the screw 41, thereby causing the first movable seat 42 to move along the guide rail 44. At the same time, the second movable seats 46 move synchronously along the guide rod 45, thereby causing the arc guide plate 471 and the arc rack 472 to move axially along the pipe, thereby causing the flaw detection assembly 5 to move axially along the pipe to detect flaws in a large range.

[0043] At the same time, the second motor 54 is started to rotate the rolling gear 53, thereby causing the rolling gear 53 to roll along the arc-shaped rack 472, which in turn causes the slider 51 to slide along the guide groove 473, thereby causing the X-ray flaw detection module 58 to move in an arc shape, thereby enabling the X-ray flaw detection module 58 to detect flaws in the circumference of the pipe.

[0044] When the rolling gear rotates, it drives the incomplete gear 591 to rotate. When the incomplete gear 591 meshes with the transmission gear 592, the transmission gear 592 drives the rotating seat 56 to rotate. At the same time, the coil spring 593 is wound and accumulates elastic potential energy. When the incomplete gear 591 and the transmission gear 592 are disengaged, the coil spring 593 releases the potential energy, causing the rotating seat 56 to rotate in the opposite direction. In this cycle, the rotating seat 56 will achieve periodic reciprocating swing, thereby causing the X-ray flaw detection module 58 to reciprocate, which further increases the search range of the X-ray flaw detection module 58.

[0045] When the diameter of the pipe is too large, the third motor 661 is started to rotate the driving gear 662, so that the ring gear 663 drives the rotating cylinder 62 to rotate synchronously, which makes the pipe inside the rotating cylinder 62 rotate synchronously, and then the blind area of the pipe is rotated into the detection range of the X-ray flaw detection module 58, thus realizing comprehensive flaw detection of the pipe and greatly improving the flaw detection effect.

[0046] 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. An X-ray flaw detector, characterized in that: include A mounting frame (3), the mounting frame (3) being fixedly mounted on the top of the base (1); A translation mechanism (4), the translation mechanism (4) being mounted on the inner side of the mounting frame (3); A flaw detection assembly (5), the flaw detection assembly (5) being mounted on the translation mechanism (4) for flaw detection of the pipe fitting; A positioning mechanism (6), the positioning mechanism (6) being mounted on the top of the base (1) to position and install the pipe fitting; The translation mechanism (4) includes a screw rod (41), a first movable seat (42), a first motor (43), a guide rod (45), a second movable seat (46) and a guide member (47); the guide member (47) includes an arc-shaped guide plate (471) and an arc-shaped rack (472); the arc-shaped guide plate (471) is fixedly mounted between the first movable seat (42) and the second movable seat (46); the arc-shaped rack (472) is fixedly mounted between the first movable seat (42) and the second movable seat (46) and is arranged parallel to the arc-shaped guide plate (471); a guide groove (473) is provided on the arc-shaped guide plate (471); and the flaw detection assembly (5) is mounted in the guide groove (473); The flaw detection assembly (5) includes a slider (51), a first mounting seat (52), a rolling gear (53) and a second motor (54); the slider (51) is slidably mounted in the guide groove (473), one end of the slider (51) is fixedly connected to the first mounting seat (52), the rolling gear (53) is rotatably mounted on the inner side of the first mounting seat (52) and meshes with the arc-shaped rack (472), and the second motor (54) is fixedly mounted on the outer side of the first mounting seat (52), and the output shaft is fixedly connected to the rolling gear (53); The flaw detection assembly (5) further includes a second mounting seat (55), a rotating seat (56), a first cylinder (57) and an X-ray flaw detection module (58); the second mounting seat (55) is fixedly mounted on the other end of the slider (51), one end of the rotating seat (56) is rotatably mounted on the inner side of the second mounting seat (55), the other end of the rotating seat (56) is fixedly connected to the first cylinder (57), and the X-ray flaw detection module (58) is fixedly mounted on the output end of the first cylinder (57); The flaw detection assembly (5) further includes a transmission member (59), the transmission member (59) including an incomplete gear (591), a transmission gear (592) and a coil spring (593); the incomplete gear (591) is coaxially fixedly connected to the rolling gear (53), the transmission gear (592) is coaxially fixedly connected to the rotating seat (56) and intermittently meshed with the incomplete gear (591), the coil spring (593) is sleeved on the rotating shaft of the transmission gear (592), one end of the coil spring (593) is fixedly connected to the second mounting seat (55), and the other end of the coil spring (593) is fixedly connected to the transmission gear (592).

2. An X-ray flaw detector according to claim 1, characterized in that: The screw rod (41) is rotatably mounted on the top of the base (1), the first movable seat (42) is threadedly mounted on the screw rod (41), the first motor (43) is fixedly mounted on one end of the base (1), and the output shaft is fixedly connected to the screw rod (41), the guide rod (45) is fixedly mounted on the top of the mounting frame (3) and is arranged parallel to the screw rod (41), the second movable seat (46) is slidably mounted on the guide rod (45), and the guide member (47) is mounted between the first movable seat (42) and the second movable seat (46).

3. An X-ray flaw detector according to claim 2, characterized in that: A guide rail (44) matching the first movable seat (42) is fixedly mounted on the top of the base (1), and the bottom end of the first movable seat (42) is slidably connected to the guide rail (44).

4. An X-ray flaw detector according to claim 3, characterized in that: The positioning mechanism (6) comprises two fixed seats (61), two rotating cylinders (62), two second cylinders (63), two clamping plates (64) and two placement seats (65); the two fixed seats (61) are respectively fixedly mounted on both ends of the base (1); the two rotating cylinders (62) pass through the corresponding fixed seats (61) and are rotatably connected to the fixed seats (61); the two second cylinders (63) are respectively fixedly mounted on the tops of the two rotating cylinders (62); the two clamping plates (64) are respectively fixed on the output ends of the two second cylinders (63) and are located inside the rotating cylinder (62); and the two placement seats (65) are respectively fixedly mounted on the insides of the two rotating cylinders (62).

5. An X-ray flaw detector according to claim 4, characterized in that: A driving member (66) is mounted on one of the fixed seats (61), and the driving member (66) includes a third motor (661), a driving gear (662), and a ring gear (663); the third motor (661) is fixedly mounted on the fixed seat (61), the driving gear (662) is fixedly mounted on the output shaft of the third motor (661), and the ring gear (663) is fixedly mounted on the end of the rotating cylinder (62) and meshes with the driving gear (662).

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