Ultrasonic nondestructive detector for pipeline

Abstract

The invention relates to the technical field of pipeline ultrasonic detection, in particular to a pipeline ultrasonic nondestructive detector which comprises a fixing ring arranged on the outer side of a pipeline in a sleeving mode, a fixing mechanism is arranged on the inner side of one end of the fixing ring, an annular groove is formed in the outer side of the other end of the fixing ring, a sliding block is slidably connected into the annular groove, and a connecting rod is arranged at the top of the sliding block. One end of the connecting rod is connected with a mounting box, the mounting box is internally connected with an ultrasonic nondestructive detector body through a lifting assembly, a hole is formed in one side, close to a pipeline, of the mounting box, a clamping block is arranged on one side of the mounting box, a clamping groove is formed in the clamping block, and a marking pen is detachably clamped in the clamping groove. The sliding block is shifted to slide along the annular groove to drive the ultrasonic non-destructive detector body to rotate around the pipeline to detect the welding position of the pipeline, and the situation that a worker holds the ultrasonic non-destructive detector body to rotate around the pipeline in a handheld mode in the detection process, so that the ultrasonic non-destructive detector body falls off, and a part of a welding seam area is omitted is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline ultrasonic detection, and in particular to an ultrasonic nondestructive detector for pipelines. Background Art

[0002] Nondestructive testing is to use the characteristics of sound, light, magnetism and electricity to detect whether there are defects or unevenness in the object under test without damaging or affecting the performance of the object under test, and to provide information such as the size, location, nature and quantity of the defects. Ultrasonic nondestructive testing is mainly based on the propagation characteristics of ultrasonic waves in the test piece. Ultrasonic waves are generated at the sound source, and a certain method is used to make the ultrasonic waves enter the test piece. The ultrasonic waves propagate in the test piece and interact with the test piece material and the defects therein, so that the propagation direction or characteristics are changed. The changed ultrasonic waves are received, processed and analyzed by the detection equipment, and according to the characteristics of the received ultrasonic waves, the test piece itself and its internal defects and the characteristics of the defects are evaluated.

[0003] Pipeline laying involves all walks of life and undertakes an important production mission. Most pipelines need to face various complex environments, such as bad weather, impact, corrosion of chemical substances inside the pipeline, etc., so pipelines are prone to various defects. In engineering, incidents where pipeline defects cause great damage to people's survival and property safety frequently occur. Therefore, the detection of pipeline health status is particularly important.

[0004] When inspecting welds, existing nondestructive testing equipment requires the handheld testing equipment to be rotated around the pipeline, but the pipeline is circular, and the position of the weld is easily lost when the testing equipment is moved, resulting in partial omission of the weld area. Summary of the invention

[0005] The purpose of the present invention is to provide an ultrasonic nondestructive testing instrument for pipelines, which solves the problem that the existing nondestructive testing equipment requires a handheld testing device to rotate around the pipeline, and the position of the weld is easily lost when the testing device is moved, thereby causing partial weld area to be missed.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: An ultrasonic nondestructive detector for a pipeline comprises a fixing ring sleeved on the outer side of the pipeline, a fixing mechanism is provided on the inner side of one end of the fixing ring, an annular groove is provided on the outer side of the other end of the fixing ring, a sliding block is slidably connected in the annular groove, a connecting rod is provided on the top of the sliding block and is arranged along the length direction of the fixing ring, an end of the connecting rod away from the fixing mechanism is connected to an installation box, an ultrasonic nondestructive detector body is connected in the installation box through a lifting component, a hole for the ultrasonic nondestructive detector body to be moved out is provided on a side of the installation box close to the pipeline, a clamping block is provided on one side of the installation box, a clamping slot is provided on the clamping block, a marking pen is detachably clamped in the clamping slot, and the pen head of the marking pen is arranged in sliding contact with the outer side surface of the pipeline.

[0007] A further technical solution is that the fixing mechanism includes a bolt, a fixing ring is provided with threaded holes running through both sides thereof, the bolt is threadedly connected to the fixing ring through the threaded holes, and one end of the bolt passes through the inner side of the fixing ring and is rotatably connected to an arc clamp.

[0008] A further technical solution is that a mounting block is provided at one end of the connecting rod away from the mounting box, a movable cavity is provided inside the mounting block, a first opening and a second opening connected to the movable cavity are respectively provided on the left and right sides of the mounting block, a connecting rod is arranged inside the movable cavity for horizontal rotation, one end of the connecting rod passes through the movable cavity through the first opening and is connected to the toggle rod, the other end of the connecting rod passes through the movable cavity through the second opening and is connected to the fixed block, a plurality of fixing holes are arranged around the outer side of the fixing ring, a tension spring is vertically arranged in the movable cavity near the first opening, one end of the tension spring is connected to the inner wall of the movable cavity, and the other end is connected to the connecting rod.

[0009] A further technical solution is that the lifting assembly includes an electric telescopic rod, which is arranged on the upper surface of the installation box. The telescopic end of the electric telescopic rod passes through the inside of the installation box through a through hole and is connected to the ultrasonic non-destructive testing instrument body.

[0010] A further technical solution is that the fixed ring includes a first fixed half ring and a second fixed half ring, the first fixed half ring is rotatably connected to the corresponding end of the second fixed half ring, the other end of the first fixed half ring is connected with a connecting block, a connecting warehouse is provided inside the connecting block, a locking rod is movably provided in the connecting warehouse through a rebound component, one end of the locking rod passes through the connecting warehouse through a sliding hole and is connected to a handle, the other end of the locking rod passes through the connecting warehouse through a movable hole and is connected to a locking block; a locking hole is provided on the outer side of the other end of the second fixed half ring for insertion and connection with the locking block.

[0011] A further technical solution is that the rebound assembly includes a support spring and a support ring. The support ring is placed in the connecting chamber and fixedly sleeved on the outside of the locking rod. The support spring is sleeved on the outside of the locking rod. One end of the support spring is fixedly connected to the side of the support ring away from the movable hole, and the other end of the support spring is fixedly connected to the inner wall of the connecting chamber.

[0012] A further technical solution is that the card block is made of rubber material, and the inner ring diameter of the card slot is smaller than the outer ring diameter of the marker pen.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By providing an annular groove and a sliding block, the sliding block is moved to slide along the annular groove, so as to drive the ultrasonic nondestructive testing instrument body to rotate around the pipeline, and detect the pipeline welding part, thereby preventing the ultrasonic nondestructive testing instrument body from falling off when the staff holds it and rotates it around the pipeline during the detection, resulting in the omission of part of the weld area.

[0014] 2. By setting the pen tip of the marker to slide in contact with the outer surface of the pipe, the marker can mark the track of the inspected area when the ultrasonic non-destructive testing instrument surrounds the pipe for inspection. The track mark can directly determine whether there is a weld area that has not been inspected to avoid missed inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the connection between an ultrasonic nondestructive testing instrument for pipelines and a pipeline.

[0016] Figure 2 The present invention is a schematic structural diagram of an ultrasonic nondestructive testing instrument for pipelines.

[0017] Figure 3 This is a cross-sectional view of the connection between the mounting block, the toggle rod, the connecting rod and the fixed block of the present invention.

[0018] Figure 4 This is a cross-sectional view of the connection between the installation box of the present invention and the ultrasonic nondestructive testing instrument body.

[0019] Figure 5 This is a cross-sectional view of the connection block and the rebound component of the present invention.

[0020] Icons: 1-fixed ring, 2-annular groove, 3-sliding block, 4-connecting rod, 5-installation box, 6-ultrasonic non-destructive testing instrument body, 7-hole, 8-block, 9-slot, 10-marker pen, 11-bolt, 12-arc splint, 13-installation block, 14-movable cavity, 15-first opening, 16-second opening, 17-connecting rod, 18-toggle rod, 19-fixed block, 20-fixed hole, 21-tension spring, 22-electric telescopic rod, 23-through hole, 24-first fixed half ring, 25-second fixed half ring, 26-connecting block, 27-connecting compartment, 28-locking rod, 29-handle, 30-sliding hole, 31-movable hole, 32-locking block, 33-locking hole, 34-support spring, 35-support ring, 36-pipeline. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. 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 present invention.

[0022] Embodiment 1: See also Figure 1 , Figure 4The present invention shows an ultrasonic nondestructive testing instrument for pipelines, comprising a fixing ring 1 sleeved on the outside of a pipeline 36, a fixing mechanism is provided on the inner side of one end of the fixing ring 1, an annular groove 2 is provided on the outer side of the other end of the fixing ring 1, a sliding block 3 is slidably connected in the annular groove 2, a connecting rod 4 arranged along the length direction of the fixing ring 1 is provided on the top of the sliding block 3, an end of the connecting rod 4 away from the fixing mechanism is connected to an installation box 5, an ultrasonic nondestructive testing instrument body 6 is connected in the installation box 5 through a lifting assembly, the ultrasonic nondestructive testing instrument body 6 is prior art, and will not be described in detail here, and a side of the installation box 5 close to the pipeline 36 is provided with a connection rod 4 for ultrasonic nondestructive testing. The detection instrument body 6 is moved out of the hole 7, and the lifting assembly moves the ultrasonic detector body out of the inside of the installation box 5 through the hole for detection of the pipeline 36. A card block 8 is provided on one side of the installation box 5, and a card slot is provided on the card block 8. A marker pen 10 is detachably provided in the card slot. The marker pen 10 can be a marker pen in the prior art. The pen head of the marker pen 10 is arranged in sliding contact with the outer side of the pipeline 36. In actual use, when detecting the pipeline 36, the fixing ring 1 is first sleeved on the outside of the pipeline 36 and moved to a suitable position to be detected. The fixing ring 1 is fixedly installed on the outside of the pipeline 36 by the fixing mechanism, and the lifting assembly is used. The ultrasonic nondestructive testing instrument body 6 is moved out of the installation box 5 and moved to a suitable position, and then the sliding block 3 is toggled to slide along the annular groove 2 to drive the ultrasonic nondestructive testing instrument body 6 to rotate around the pipe 36 to detect the welding part of the pipe 36, thereby preventing the ultrasonic nondestructive testing instrument body 6 from falling off the pipe 36 when the staff holds the ultrasonic nondestructive testing instrument body 6 around the pipe 36 for detection, resulting in part of the weld area not being detected. At the same time, the pen head of the marking pen 10 connected to the card block 8 on one side of the installation box 5 is in sliding contact with the outer side of the pipe 36. The marking pen 10 can be used when the ultrasonic nondestructive testing instrument body 6 is around the pipe 36 for detection. When performing inspection, the track mark is made for the inspected area. Through the track mark, it can be directly judged whether there is a weld area that has not been inspected, so as to avoid missed inspection. By setting up the installation box 5, the ultrasonic non-destructive testing instrument body 6 is arranged inside the installation box 5 when not in use, so as to avoid the ultrasonic non-destructive testing instrument body 6 from being bumped and damaged by the external environment during transportation or installation and other situations; by setting a card slot on the card block 8 to install the marker pen 10, the marker pen 10 can be easily replaced or the position of the marker pen 10 can be appropriately adjusted, so as to facilitate the track marking of the inspected area during inspection.

[0023] The fixing mechanism includes a bolt 11, and threaded holes are opened on the fixing ring 1 on both sides thereof. The bolt 11 is threadedly connected to the fixing ring 1 through the threaded holes, and one end of the bolt 11 that passes through the inner side of the fixing ring 1 is rotatably connected to an arc-shaped clamping plate 12. In actual use, by rotating the bolt 11, the arc-shaped clamping plate 12 moves closer to the pipe 36 and clamps the pipe 36, thereby fixing the fixing ring 1 on the outer side of the pipe 36. By arranging the bolt 11 and the arc-shaped clamping plate 12, it is convenient to fix pipes 36 of different diameters, thereby improving the practicability of the device.

[0024] Embodiment 2: Based on Example 1, refer to Figure 2 , Figure 3 As shown, a mounting block 13 is provided at one end of the connecting rod 4 away from the mounting box 5, and an active cavity 14 is provided inside the mounting block 13. A first opening 15 and a second opening 16 connected to the active cavity 14 are respectively provided on the left and right sides of the mounting block 13. A connecting rod 17 is arranged inside the active cavity 14 for horizontal rotation. One end of the connecting rod 17 passes through the first opening 15 to pass through the active cavity 14 and is connected to a toggle rod 18. The other end of the connecting rod 17 passes through the second opening 16 to pass through the active cavity 14 and is connected to a fixed block 19. A plurality of fixing holes 20 are arranged around the outer side of the fixing ring 1. A tension spring 21 is vertically arranged near the first opening 15 in the active cavity 14. One end of the tension spring 21 is connected to the inner wall of the active cavity 14, and the other end is connected to the connecting rod 17, so that when the toggle rod 18 is not pulled, the bottom of the fixed block 19 is placed in a fixing hole 20. In actual use, when it is necessary to move the sliding block 3 along the annular groove 2, the ultrasonic nondestructive testing instrument body 6 is driven to weld the pipeline 36 When the joint is to be inspected, the toggle rod 18 is pulled to drive the connecting rod 17 to rotate, thereby pressing the connecting rod 17 near one end of the toggle rod 18 downward, and at the same time, the tension spring 21 is stretched, and the other end of the connecting rod 17 is tilted upward, thereby causing the fixing block 19 to slide out of the fixing hole 20, thereby ensuring the smooth sliding of the sliding block 3, thereby driving the ultrasonic non-destructive testing instrument body 6 to rotate around the pipe 36, and inspecting the welding part of the pipe 36. When the ultrasonic non-destructive testing instrument body 6 detects that there is a problem at the welding part of the pipe 36 and needs to be recorded, the toggle rod 18 is released, and the tension spring 21 rebounds due to elastic potential energy and drives the connecting rod 17 near one end of the toggle rod 18 to tilt upward, and the other end of the connecting rod 17 is pressed downward to cause the fixing block 19 to slide into a fixing hole 20, thereby causing the sliding block 3 to stop sliding along the annular groove 2. At this time, the staff's hands can leave the device, which is convenient for recording the problematic areas for subsequent maintenance, thereby improving the practicality of the device.

[0025] Embodiment 3: Based on Example 1, refer to Figure 4As shown, the lifting assembly includes an electric telescopic rod 22, which is arranged on the upper surface of the installation box 5. The telescopic end of the electric telescopic rod 22 passes through the interior of the installation box 5 through the through hole 23 and is connected to the ultrasonic non-destructive testing instrument body 6. By setting the electric telescopic rod 22, the extension and retraction of the electric telescopic rod 22 can be controlled, thereby adjusting the distance between the ultrasonic non-destructive testing instrument body 6 and the pipeline 36 to ensure the smooth operation of the ultrasonic non-destructive testing instrument body 6.

[0026] Embodiment 4: Based on Example 1, refer to Figure 2 , Figure 5 As shown, the fixing ring 1 includes a first fixing half ring 24 and a second fixing half ring 25, the first fixing half ring 24 is rotatably connected to one end corresponding to the second fixing half ring 25, a connecting block 26 is connected to the other end of the first fixing half ring 24, a connecting chamber 27 is provided inside the connecting block 26, a locking rod 28 is movably provided in the connecting chamber 27 through a rebound component, one end of the locking rod 28 passes through the connecting chamber 27 through a sliding hole 30 and is connected to a handle 29, and the other end of the locking rod 28 passes through the connecting chamber 27 through a movable hole 31 and is connected to a locking block 32; the outer side of the other end of the second fixing half ring 25 A locking hole 33 is provided on the top for inserting and connecting the locking block 32. There is a gap between the end of the second fixed semi-ring 25 close to the connecting block 26 and the connecting block 26, so that the second fixed semi-ring 25 and the first fixed semi-ring 24 can be smoothly brought together and separated. The rebound assembly includes a support spring 34 and a support ring 35. The support ring 35 is placed in the connecting chamber 27 and fixedly sleeved on the outside of the locking rod 28. The support spring 34 is sleeved on the outside of the locking rod 28. One end of the support spring 34 is fixedly connected to the side of the support ring 35 away from the movable hole 31, and the other end of the support spring 34 is fixedly connected to the inner wall of the connecting chamber 27. In actual use, by setting the first fixed half ring 24 and the second fixed half ring 25, the first fixed half ring 24 and the second fixed half ring 25 are sleeved on the surface of the pipe 36 to be detected, and then the handle 29 is pulled, and the handle 29 drives the locking block 32 to slide into the connecting compartment 27 through the locking rod 28, and at the same time, the supporting spring 34 is compressed, and the end of the second fixed half ring 25 corresponding to the connecting block 26 is brought close to the first fixed half ring 24, and then the handle 29 is released, and the supporting ring 35 is pushed under the elastic action of the supporting spring 34, and the supporting ring 35 drives the locking rod 28 to move, thereby The locking block 32 is driven to slide into the locking hole 33 provided on the second fixed half ring 25, so that the first fixed half ring 24 and the second fixed half ring 25 can be assembled into a fixed ring 1. By setting the first fixed half ring 24 and the second fixed half ring 25, the fixed ring 1 can be conveniently sleeved on the outside of the pipe 36 for detecting the pipe 36. At the same time, by setting the connecting bin 27, the locking rod 28, the handle 29, the locking block 32, the locking hole 33 and the rebound assembly, the first fixed half ring 24 and the second fixed half ring 25 can be easily disassembled. No other tools are required during disassembly, which increases the portability of the device.

[0027] The card block 8 is made of rubber material, and the inner ring diameter of the card slot is smaller than the outer ring diameter of the marker pen 10. Since the card block 8 is made of rubber material and has a certain elasticity, it is convenient to insert the marker pen 10 into the card slot. The inner ring diameter of the card slot is smaller than the outer ring diameter of the marker pen 10, which makes it convenient for the marker pen 10 to be inserted into the card slot and not to loosen easily.

[0028] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An ultrasonic nondestructive testing instrument for a pipeline, comprising a fixing ring (1) sleeved on the outside of a pipeline (36), characterized in that: A fixing mechanism is provided on the inner side of one end of the fixing ring (1), and an annular groove (2) is provided on the outer side of the other end of the fixing ring (1). A sliding block (3) is slidably connected in the annular groove (2). A connecting rod (4) is provided on the top of the sliding block (3) along the length direction of the fixing ring (1). An installation box (5) is connected to the end of the connecting rod (4) away from the fixing mechanism. An ultrasonic non-destructive testing instrument body (6) is provided in the installation box (5) via a lifting assembly. A hole (7) for moving the ultrasonic non-destructive testing instrument body (6) out is provided on a side of the installation box (5) close to the pipe (36). A clamping block (8) is provided on one side of the installation box (5). A clamping groove is provided on the clamping block (8). A marking pen (10) is detachably clamped in the clamping groove. The pen head of the marking pen (10) is arranged in sliding contact with the outer side surface of the pipe (36).

2. The ultrasonic nondestructive testing instrument for pipelines according to claim 1, characterized in that: The fixing mechanism comprises a bolt (11), the fixing ring (1) is provided with threaded holes penetrating through both sides thereof, the bolt (11) is threadedly connected to the fixing ring (1) through the threaded holes, and one end of the bolt (11) that penetrates through the inner side of the fixing ring (1) is rotatably connected to an arc-shaped clamping plate (12).

3. The ultrasonic nondestructive testing instrument for pipelines according to claim 1, characterized in that: A mounting block (13) is provided at one end of the connecting rod (4) away from the mounting box (5), an active cavity (14) is provided inside the mounting block (13), a first opening (15) and a second opening (16) which are connected to the active cavity (14) are respectively provided on the left and right sides of the mounting block (13), a connecting rod (17) is arranged inside the active cavity (14) for transverse rotation, one end of the connecting rod (17) passes through the active cavity (14) through the first opening (15) and is connected to a toggle rod (18), the other end of the connecting rod (17) passes through the active cavity (14) through the second opening (16) and is connected to a fixing block (19), a plurality of fixing holes (20) are arranged around the outer side of the fixing ring (1), a tension spring (21) is vertically arranged in the active cavity (14) near the first opening (15), one end of the tension spring (21) is connected to the inner wall of the active cavity (14), and the other end is connected to the connecting rod (17).

4. The ultrasonic nondestructive testing instrument for pipelines according to claim 1, characterized in that: The lifting assembly comprises an electric telescopic rod (22), the electric telescopic rod (22) being arranged on the upper surface of the installation box (5), the telescopic end of the electric telescopic rod (22) passing through the interior of the installation box (5) through a through hole (23) and being connected to the ultrasonic non-destructive testing instrument body (6).

5. The ultrasonic nondestructive testing instrument for pipelines according to claim 1, characterized in that: The fixing ring (1) comprises a first fixing half ring (24) and a second fixing half ring (25), wherein the first fixing half ring (24) is rotatably connected to one end corresponding to the second fixing half ring (25), and a connecting block (26) is connected to the other end of the first fixing half ring (24), wherein a connecting chamber (27) is provided inside the connecting block (26), and a locking rod (28) is movably provided inside the connecting chamber (27) via a rebound assembly, wherein one end of the locking rod (28) passes through the connecting chamber (27) through a sliding hole (30) and is connected to a handle (29), and the other end of the locking rod (28) passes through the connecting chamber (27) through a movable hole (31) and is connected to a locking block (32); and a locking hole (33) is provided on the outer side of the other end of the second fixing half ring (25) and is inserted and connected to the locking block (32).

6. The ultrasonic nondestructive testing instrument for pipelines according to claim 5, characterized in that: The rebound assembly comprises a support spring (34) and a support ring (35); the support ring (35) is disposed in the connection chamber (27) and fixedly sleeved on the outside of the locking rod (28); the support spring (34) is sleeved on the outside of the locking rod (28); one end of the support spring (34) is fixedly connected to a side of the support ring (35) away from the movable hole (31); and the other end of the support spring (34) is fixedly connected to an inner wall of the connection chamber (27).

7. The ultrasonic nondestructive testing instrument for pipelines according to claim 1, characterized in that: The clamping block (8) is made of rubber material, and the inner ring diameter of the clamping slot is smaller than the outer ring diameter of the marking pen (10).

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