Weld joint measuring device for pressure pipeline detection

Abstract

The utility model discloses a welding seam measuring device for pressure pipeline detection, and mainly relates to the field of pipeline quality detection. Comprising a detection frame and an ultrasonic probe, the detection frame comprises a strip-shaped plate, vertical frames are symmetrically arranged at the bottom of the strip-shaped plate in the length direction of the strip-shaped plate, wheel shafts rotationally connected with the vertical frames are arranged at the bottom ends of the vertical frames, fixed wheels are arranged on the wheel shafts, swing arms are symmetrically hinged to the two sides of the strip-shaped plate, and wheel frames are arranged at the bottom ends of the swing arms; a pressing wheel is rotatably installed at the end, away from the swing arm, of the wheel frame, the axial direction of the pressing wheel and the axial direction of the fixed wheel correspond to the width direction of the strip-shaped plate, an extension frame extending outwards in the width direction of the strip-shaped plate is arranged on the strip-shaped plate, a clamping base is arranged at the outer end of the extension frame, and the ultrasonic probe is detachably fixed in the clamping base. The utility model has the beneficial effects that the probe can be quickly assembled with the pipeline, and the probe is assisted to have a stable circumferential stroke along the circumferential surface of the pipeline.

Description

Technical Field

[0001] The utility model relates to the field of pipeline quality detection, in particular to a weld measuring device for pressure pipeline detection. Background Art

[0002] During the production, installation, construction, operation and maintenance of pressure pipelines, the welds at their joints need to be inspected. Common non-destructive testing methods include Ultrasonic Testing (UT); Radiographic Testing (RT); Magnetic Particle Testing (MT); Penetrant Testing (PT); and Eddy Current Testing (ET).

[0003] Among the above detection methods, ultrasonic detection is the most common. Usually, the operator needs to hold the ultrasonic detection head, apply coupling agent, and then detect along the circumference of the pipeline at the weld. Due to the characteristics of the pipeline's circumference, the detection path must always maintain an arc in contact with the pipeline, especially at the bottom, which is particularly inconvenient and difficult to operate.

[0004] There are some existing detection mechanisms that can be installed on pipelines, most of which have complex structures and cumbersome installation. For example, the patented technology "Butt Weld Detection Device" (publication number: CN111537605A) and "Pipeline Weld Scanning Device" (publication number: CN116818886A) are both used to detect the welds of pipeline welding based on ultrasonic scanning, but they are very complex in structure and too costly to be promoted. Utility Model Content

[0005] The utility model aims to provide a weld measuring device for pressure pipeline detection, which can be quickly assembled with the pipeline and assists the probe to have a stable circumferential stroke along the pipeline circumference.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A weld measuring device for pressure pipeline inspection comprises an inspection frame and an ultrasonic probe, wherein the inspection frame comprises a strip plate, a vertical frame is symmetrically provided at the bottom of the strip plate along its length direction, a wheel axle is rotatably connected to the vertical frame at the bottom end, a fixed wheel is provided on the wheel axle, swing arms are symmetrically hinged on both sides of the strip plate, a wheel frame is provided at the bottom end of the swing arm, a pressure wheel is rotatably installed at one end of the wheel frame away from the swing arm, the axial directions of the pressure wheel and the fixed wheel correspond to the width direction of the strip plate, an extension frame extending outward along its width direction is provided on the strip plate, a clamping seat is provided at the outer end of the extension frame, and the ultrasonic probe is detachably fixed in the clamping seat.

[0008] The middle part of the wheel shaft is vertically and rotatably connected to the bottom end of the stand.

[0009] The upper part of the swing arm is provided with a hinge shaft rotatably connected to the hinge position, and the upper part of the hinge shaft is provided with a control rod extending in the same direction as the swing arm. The control rod is penetrated by a strip hole groove, and the strip hole groove is penetrated by a cylindrical pin rod matched with its notch, and the pin rod has a linear stroke along the length direction of the strip plate.

[0010] A mounting seat is fixed in the center of the top of the strip plate, and the mounting seats are arranged in two groups in parallel along the width direction of the strip plate, and sliding sleeves are fixed on both sides of each group of the mounting seats, and the outer end of the sliding sleeve is telescopically matched with a telescopic rod, one end of the telescopic rod is inserted into the sliding cavity and connected to a compression spring, the compression spring is arranged in the sliding sleeve, and the compression spring has an elastic force to push the telescopic rod away from the sliding sleeve, and the two ends of the pin rod are respectively fixedly connected to the telescopic rod on the same side.

[0011] A mounting seat is fixed in the center of the top of the strip plate, and cylinder bodies are fixed on both sides of the mounting seat. The outer ends of the cylinder bodies are provided with cylinder rods that cooperate with them. The cylinder rods have a telescopic stroke along the length direction of the strip plate, and the outer ends of the cylinder rods are fixedly connected to the pin rods.

[0012] The bottom end of the swing arm is penetrated by a sliding hole groove extending in the same direction as the length direction thereof, a slide plate is slidably fitted in the sliding hole groove, the width of the slide plate corresponds to the width of the swing arm, the side wall of the sliding hole groove is penetrated by screw holes arranged in rows and at equal distances, a butterfly bolt is threadedly connected to one of the screw holes, the slide plate is penetrated by a socket for movably plugging with the screw rod part of the butterfly bolt, the two sides of the slide plate are respectively fixed to one end of the wheel frame, the end of the wheel frame away from the slide plate is connected to the pressure wheel, and the wheel frame is perpendicular to the slide plate.

[0013] The clamping seat includes a fixed seat and a movable seat, the fixed seat is fixed to the outer end of the extension rod, both sides of the fixed seat and both sides of the movable seat are respectively provided with ear plates, a stud bolt is penetrated in the center of the ear plate, and adjacent end surfaces of the fixed seat and the movable seat are respectively provided with relative mounting grooves, and the inner curved surface of the mounting groove is adapted to the side wall of the probe handle.

[0014] A stepper motor is installed on the strip plate, an upper pulley is installed on the output shaft of the stepper motor, a lower pulley is arranged on the wheel shaft, and belts are wound around the upper pulley and the lower pulley.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When testing, the detection device fixes the probe in the appropriate position in the clamping seat, then expands the two swing arms outward to form an open structure, and makes the two fixed wheels contact the pipe wall, so that it can be easily matched on the pipe to realize a structure that can crawl around the pipe surface. By walking around the pipe surface, the probe is driven to detect along the pipe in a simple and labor-saving manner, which greatly reduces the difficulty of operation and simplifies the assembly steps, making it very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model cooperating with a pipeline in the positive direction.

[0018] Figure 2 It is a schematic diagram of the utility model cooperating with the pipeline from the side.

[0019] Figure 3 It is a structural schematic diagram of the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the utility model.

[0021] Numbers shown in the accompanying drawings:

[0022] 1. Strip plate; 2. Stand; 3. Axle; 4. Fixed wheel; 5. Articulated position; 6. Cutting groove; 7. Swing arm; 8. Control lever; 9. Sliding hole groove; 10. Slide plate; 11. Wheel frame; 12. Pressure wheel; 13. Screw hole; 14. Butterfly bolt; 15. Strip hole groove; 16. Pin rod; 17. Sliding sleeve; 18. Telescopic rod; 19. Extension frame; 20. Fixed seat; 21. Movable seat; 22. Ear plate; 23. Mounting groove. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0024] Embodiment 1:

[0025] The detection device of this example is still based on ultrasonic technology, using the existing mature ultrasonic detection UT equipment, including a host and a probe, the host is used to process, store and display the signal obtained by the probe, and the probe is connected to the host information through a wired line or a wireless signal. And the ultrasonic probe is fixedly installed on the detection frame.

[0026] The detection frame includes a centrally arranged strip plate 1, and a vertical frame 2 is symmetrically arranged on the bottom side of the strip plate 1, and a wheel shaft 3 is rotatably connected to the vertical frame 2. The axis of the wheel shaft 3 corresponds to the width direction of the strip plate 1. The wheel shaft 3 is symmetrical and vertically arranged relative to the vertical frame 2, so that the vertical frame 2 and the wheel shaft 3 at its bottom together form an inverted "T" structure. A fixed wheel 4 is arranged on the wheel shaft 3. Based on two symmetrical vertical frames 2, the two fixed wheels 4 are horizontally arranged in the same direction and used on the top circumference of the matching pipe. And after compression, the axial direction of the fixed wheel 4 is parallel to the axial direction of the pipe to be tested.

[0027] Hinge positions 5 are respectively arranged in the center of both ends of the strip plate 1 , and grooves 6 are arranged on both sides of the strip plate 1 corresponding to the hinge positions 5 , and the grooves 6 are used to facilitate the swing of the control rod 8 . A swing arm 7 is hinged on the hinge position 5, and a hinge shaft rotatably connected to the hinge position 5 is provided on the upper part of the swing arm 7, and a control rod 8 extending in the same direction as the swing arm 7 is provided above the hinge shaft, and a strip hole groove 15 is penetrated by the control rod 8, and the length direction of the strip hole groove is in the same direction as the swing arm 7, and a sliding hole groove 9 extending in the same direction as the length direction is penetrated by the bottom end of the swing arm 7, and a slide plate 10 is slidably fitted in the sliding hole groove 9, and the width of the slide plate 10 corresponds to the width of the swing arm 7, and wheel frames 11 perpendicular to the slide plate 10 are fixed on both sides of the slide plate 10, and the wheel frames 11 are plate-type structures, and the wheel frames 11 on both sides and the middle slide plate 10 together constitute a "concave" type slide structure, and a pressing wheel 12 is rotatably installed on the end of the wheel frame 11 away from the slide plate 10, and the axial direction of the pressing wheel 12 is parallel to the axial direction of the fixed wheel 4, and is used to press on the outer peripheral side wall of the pipeline. The side wall of the sliding hole groove 9 is penetrated by screw holes 13 arranged in rows at equal distances, one of the screw holes 13 is internally threadedly connected to a butterfly bolt 14, and the slide plate 10 is penetrated by a socket for movably plugging with the screw rod part of the butterfly bolt 14, based on which the butterfly bolt 14 can be limited to an adjustable position.

[0028] A mounting seat is fixed in the center of the top of the strip plate 1. The mounting seats are arranged in two groups in parallel along the width direction of the strip plate 1. A sliding sleeve 17 is fixed on both sides of each group of the mounting seats. A straight tube-shaped sliding cavity is provided in the sliding sleeve 17. The length direction of the sliding cavity and the sliding sleeve 17 is consistent with the length direction of the strip plate 1. The outer end of the sliding sleeve 17 is telescopically matched with a telescopic rod 18. One end of the telescopic rod 18 is inserted into the sliding cavity and connected to a compression spring. The compression spring is arranged in the sliding sleeve 17, and the compression spring is arranged in the sliding sleeve 17. The spring has an elastic force to push the telescopic rod 18 away from the sliding sleeve 17. A pin rod 16 is provided at one end of the telescopic rod 18 away from the sliding sleeve 17. Both ends of the pin rod 16 are respectively fixedly connected to the telescopic rod 18 on the same side. The pin rod 16 is a round cross-section smooth rod. The pin rod 16 passes through the strip hole groove 15 and the pin rod 16 slides with the strip hole groove, so that the control rod 8 has a driving force to swing in the vertical direction, thereby promoting the relative clamping of the bottom ends of the two swing arms 7, so that the pressing wheel 12 is more appropriately pressed on the outer peripheral side wall of the pipeline.

[0029] An extension frame 19 extending outward along the width direction is provided in the center of one side of the strip plate 1. A clamping seat is provided at the outer end of the extension frame 19. The clamping seat includes a fixed seat 20 and a movable seat 21. The fixed seat 20 is fixed to the outer end of the extension rod. Ear plates 22 are provided on both sides of the fixed seat 20 and both sides of the movable seat 21. A stud bolt is passed through the center of the ear plate 22, which is used to lock the movable seat 21 on the fixed seat 20 through the stud bolt. Relative mounting grooves 23 are provided on the adjacent end faces of the fixed seat 20 and the movable seat 21. The inner curved surface of the mounting groove 23 is adapted to the side wall of the probe. The two mounting grooves 23 are opposite to each other and are used to jointly enclose an inner cavity for fixing the probe handle. Based on the structure of the clamping seat, the probe can be fixed conveniently and simply, so that it is easy to disassemble, install and use, and adjust the position of the probe so that the emitting surface of the probe is in good contact with the pipeline detection surface.

[0030] Based on the above-mentioned simple and easy-to-process structure, the detection device is easy to use during detection. The two swing arms 7 are pulled outward to swing outward, so that they can easily straddle the pipe in an open state, and the two fixed wheels 4 are in contact with the pipe wall. When both hands are released, under the action of the spring, the two swing arms 7 have a tendency to gather relatively close at the bottom ends, so that the two pressing wheels 12 can be tightly pressed on the pipe wall. Combined with the cooperation of the two adjacent fixed wheels 4, a reliable clamping effect can be obtained for the pipe, and the extension frame 19 can be pulled as needed to enable the detection frame to move around the circumference of the pipe. During the walking process, the weld can be inspected by the probe, so that the probe can be conveniently and simply moved along the circumference and obtain smooth and effective contact with the pipe wall.

[0031] The device has a simple structure and a lightweight design, which makes it easy to carry. It can be combined with the pipeline by simply unfolding and clamping, which is convenient and practical.

[0032] Embodiment 2:

[0033] The difference from Example 1 is that this example has improved configuration and adopts electric drive, which is specifically reflected in the following two aspects:

[0034] First, the control of the control rod 8 is driven automatically. Cylinder bodies are fixed on both sides of the mounting seat, and the cylinder bodies can be air cylinders, hydraulic cylinders, and electric cylinders. The outer ends of the cylinder bodies are provided with cylinder rods that cooperate with them. The cylinder rods have a telescopic stroke along the length direction of the strip plate 1. The outer ends of the cylinder rods are fixed with pin rods 16, and the pin rods 16 pass through the strip hole slots 15 and the two slots cooperate.

[0035] Based on the addition of power, the expansion and clamping of the swing arm 7 can be automatically controlled to achieve automatic clamping coordination with the pipeline, making it easier to achieve fine control of the clamping force, simplifying the operating steps and improving the operating accuracy.

[0036] Secondly, a stepper motor is installed on the strip plate 1, an upper pulley is installed on the output shaft of the stepper motor, a lower pulley is provided on the wheel shaft 3, belts are wound around the upper and lower pulleys, and the rotation of the fixed wheel 4 is driven and controlled based on the belt, so that the crawling of the detection frame on the circumference of the pipeline is automated, and further remote control can be realized.

[0037] Based on the addition of the above-mentioned drive components and transmission structure, the detection device can realize automated clamping and pipe climbing operations.

Claims

1. A weld measuring device for pressure pipeline inspection, characterized in that: The invention comprises a detection frame and an ultrasonic probe, wherein the detection frame comprises a strip plate, a vertical frame is symmetrically provided at the bottom of the strip plate along its length direction, a wheel axle is rotatably connected to the vertical frame at the bottom end, a fixed wheel is provided on the wheel axle, swing arms are symmetrically hinged on both sides of the strip plate, a wheel frame is provided at the bottom end of the swing arm, a pressure wheel is rotatably installed at one end of the wheel frame away from the swing arm, the axial directions of the pressure wheel and the fixed wheel correspond to the width direction of the strip plate, an extension frame extending outward along its width direction is provided on the strip plate, a clamping seat is provided at the outer end of the extension frame, and the ultrasonic probe is detachably fixed in the clamping seat.

2. A weld measuring device for pressure pipeline inspection according to claim 1, characterized in that: The middle part of the wheel shaft is vertically and rotatably connected to the bottom end of the stand.

3. The weld measuring device for pressure pipeline inspection according to claim 1, characterized in that: The upper part of the swing arm is provided with a hinge shaft rotatably connected to the hinge position, and the upper part of the hinge shaft is provided with a control rod extending in the same direction as the swing arm. The control rod is penetrated by a strip hole groove, and the strip hole groove is penetrated by a cylindrical pin rod matched with its notch, and the pin rod has a linear stroke along the length direction of the strip plate.

4. A weld measuring device for pressure pipeline inspection according to claim 3, characterized in that: A mounting seat is fixed in the center of the top of the strip plate, and the mounting seats are arranged in two groups in parallel along the width direction of the strip plate, and sliding sleeves are fixed on both sides of each group of the mounting seats, and the outer end of the sliding sleeve is telescopically matched with a telescopic rod, one end of the telescopic rod is inserted into the sliding cavity and connected to a compression spring, the compression spring is arranged in the sliding sleeve, and the compression spring has an elastic force to push the telescopic rod away from the sliding sleeve, and the two ends of the pin rod are respectively fixedly connected to the telescopic rod on the same side.

5. The weld measuring device for pressure pipeline inspection according to claim 3, characterized in that: A mounting seat is fixed in the center of the top of the strip plate, and cylinder bodies are fixed on both sides of the mounting seat. The outer ends of the cylinder bodies are provided with cylinder rods that cooperate with them. The cylinder rods have a telescopic stroke along the length direction of the strip plate, and the outer ends of the cylinder rods are fixedly connected to the pin rods.

6. A weld measuring device for pressure pipeline inspection according to claim 3, characterized in that: The bottom end of the swing arm is penetrated by a sliding hole groove extending in the same direction as the length direction thereof, a slide plate is slidably fitted in the sliding hole groove, the width of the slide plate corresponds to the width of the swing arm, the side wall of the sliding hole groove is penetrated by screw holes arranged in rows and at equal distances, a butterfly bolt is threadedly connected to one of the screw holes, the slide plate is penetrated by a socket for movably plugging with the screw rod part of the butterfly bolt, the two sides of the slide plate are respectively fixed to one end of the wheel frame, the end of the wheel frame away from the slide plate is connected to the pressure wheel, and the wheel frame is perpendicular to the slide plate.

7. The weld measuring device for pressure pipeline inspection according to claim 1, characterized in that: The clamping seat includes a fixed seat and a movable seat, the fixed seat is fixed to the outer end of the extension rod, both sides of the fixed seat and both sides of the movable seat are respectively provided with ear plates, a stud bolt is penetrated in the center of the ear plate, and adjacent end surfaces of the fixed seat and the movable seat are respectively provided with relative mounting grooves, and the inner curved surface of the mounting groove is adapted to the side wall of the probe handle.

8. The weld measuring device for pressure pipeline inspection according to claim 1, characterized in that: A stepper motor is installed on the strip plate, an upper pulley is installed on the output shaft of the stepper motor, a lower pulley is arranged on the wheel shaft, and belts are wound around the upper pulley and the lower pulley.

Images