Phased array ultrasonic testing of pipe girth chain locking device

Abstract

The utility model relates to a kind of phased array ultrasonic detection pipeline annular chain locking device, including the chain around the outer periphery of pipeline, the first end and the last end of the chain are connected with locking car;Scanning device is connected on the chain, and two rows of gyro wheel A are provided on the chain;The locking car includes frame, and the lower side of the frame is equipped with fixed seat and sliding seat, and gyro wheel B is mounted on the fixed seat and the sliding seat, and the fixed seat side away from the sliding seat and the sliding seat side away from the fixed seat are equipped with connection mechanism for connecting chain respectively.The utility model phased array ultrasonic detection pipeline annular chain locking device structure is novel, and reasonable in design, easy to install, easy to lock, reduce assembly difficulty, to speed up the speed of field installation, improve detection efficiency;After chain link is connected into chain, double-wheel structure is formed, and the stability of walking track is strengthened.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a phased array ultrasonic testing pipeline circumferential chain locking device. Background Technology

[0002] Currently, phased array ultrasonic testing is widely used and is one of the important technical means for weld quality inspection, commonly applied to the quality inspection of welds and base materials in boilers, pressure vessels, and pressure pipelines. For phased array ultrasonic testing of pipeline welds, manual scanning is currently the primary method, typically equipped with chain locking devices. While the chain locking devices used for phased array testing of small-diameter pipe welds are generally quite mature, those for large-diameter pipes generally suffer from problems such as complex on-site assembly, difficulty in locking, unstable probe clamping, and easy deviation from the travel trajectory. Therefore, developing a pipeline circumferential chain locking device that is easy to use in the field is of significant practical value. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a phased array ultrasonic testing pipeline circumferential chain locking device, which is easy to install, easy to lock, and enhances the stability of the walking trajectory.

[0004] This utility model is implemented using the following scheme: a phased array ultrasonic testing pipeline circumferential chain locking device, comprising a chain wrapped around the outer circumference of the pipeline, with a locking carriage connected between the two ends of the chain; a scanning device is connected to the chain, and two rows of rollers A are provided on the chain; the locking carriage includes a frame, with a fixed seat and a sliding seat provided on the lower side of the frame, and rollers B are installed on both the fixed seat and the sliding seat; the fixed seat away from the sliding seat and the sliding seat away from the fixed seat are respectively provided with connecting mechanisms for connecting the chain.

[0005] Furthermore, the chain is composed of several links connected together, and the links are Z-shaped; one end of each link is provided with rollers A and male connectors on both sides, and the other end of each link is provided with rollers A and female connectors that can be connected to the male connectors on both sides.

[0006] Furthermore, the male connector is frustum-shaped, and the female connector includes a slot on one side of the chain link. A collar that can be inserted into the slot is rotatably connected to the male connector, and the inner hole of the collar is conical.

[0007] Furthermore, the bottom of the slot is provided with a through hole extending to the other side of the link, and the other side of the link is provided with a screw passing through the through hole. The male connector end face is provided with a threaded hole for connection with the screw.

[0008] Furthermore, the frame is provided with a long groove that slides with the sliding seat, and one end of the frame is provided with a threaded hole that passes through one end of the long groove. A lead screw is provided in the threaded hole. One end of the lead screw located inside the long groove is rotatably connected to the sliding seat, and the other end of the lead screw located outside the long groove is fixedly connected to a rotating handwheel.

[0009] Furthermore, the connecting mechanism includes a bracket fixedly connected to a fixed seat or a sliding seat, and a connector hinged to the bracket. The free end of the connector is provided with a female or male connector that can mate with a male or female connector on a chain link. A pair of guide rods are fixedly connected to the fixed seat on the side facing the sliding seat, and the sliding seat is provided with guide holes for the guide rods to pass through and slide with it.

[0010] Furthermore, the hinge end of the connector extends into a limiting plate, the limiting plate is provided with a plurality of limiting holes distributed in an arc shape, and the side of the bracket is provided with limiting screws that cooperate with the limiting holes; the bracket is provided with telescopic pins on both sides, and the hinge end of the connector is provided with pin holes that cooperate with the telescopic pins.

[0011] Furthermore, the scanning device includes a fixed frame and a pair of fixed rods connected to the fixed frame. The bottom of the fixed frame is connected to a link of a chain. The fixed rods are provided with a first movable frame and a second movable frame that can slide relative to each other. A probe holder is hinged to the lower part of the first movable frame. A detection probe is clamped and connected to the clamping end of the probe holder. A tension spring is connected between the hinged end of the probe holder and the first movable frame on the side opposite to the clamping end. A roller C is installed on the lower part of the second movable frame.

[0012] Furthermore, the fixed rod is provided with a third movable frame that can slide relative to it, a fixed block is connected to the third movable frame, a sliding and telescopic connecting rod is provided at the lower end of the fixed block, a wheel frame is fixedly connected at the lower end of the connecting rod, a spring is sleeved on the connecting rod between the third movable frame and the wheel frame, an encoder is provided on one side of the wheel frame, and an induction wheel connected to the encoder shaft is provided in the middle of the wheel frame.

[0013] Compared with the prior art, the present invention has the following advantages: The phased array ultrasonic testing pipeline circumferential chain locking device of the present invention has a novel structure, reasonable design, convenient installation, easy locking, reduces assembly difficulty, helps to speed up on-site installation and improve testing efficiency; after the chain links are connected into a chain, a double wheel structure is formed, which enhances the stability of the walking trajectory.

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the usage state of an embodiment of this utility model;

[0016] Figure 2 This is a top view of a link in an embodiment of this utility model;

[0017] Figure 3 yes Figure 2 A partial sectional view;

[0018] Figure 4 This is a schematic diagram of the connection between two links in an embodiment of this utility model;

[0019] Figure 5 This is a side view of the locking vehicle according to an embodiment of the present invention;

[0020] Figure 6 This is a top view of the frame of the locking vehicle according to an embodiment of the present invention;

[0021] Figure 7 This is a top view of the connecting mechanism of the locking vehicle according to an embodiment of the present invention;

[0022] Figure 8 This is a side view of the scanning device according to an embodiment of the present invention;

[0023] Figure 9 yes Figure 8 AA view;

[0024] Explanation of the labels in the diagram: 100-Chain, 110-Roller A, 120-Chain link, 130-Male connector, 131-Threaded hole, 140-Female connector, 141-Slot, 142-Collar, 143-Screw, 200-Locking mechanism, 210-Frame, 211-Long slot, 212-Hollowed groove, 220-Fixed seat, 221-Guide rod, 230-Sliding seat, 240-Roller B, 250-Lead screw, 260-Bracket, 261-Limit screw, 262-Telescopic pin, 270-Connector, 271 -Limiting plate, 272-Limiting hole, 280-Setting screw, 290-Padded block, 300-Scanning device, 310-Fixed frame, 320-Fixed rod, 330-First movable frame, 331-Locking screw, 340-Second movable frame, 341-Roller C, 350-Probe holder, 351-Tension spring, 360-Detection probe, 370-Third movable frame, 380-Fixed block, 381-Connecting rod, 382-Wheel frame, 383-Spring, 390-Encoder, 391-Induction wheel, 400-Pipe. Detailed Implementation

[0025] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] like Figures 1-9 As shown, a phased array ultrasonic testing pipeline circumferential chain locking device includes a chain 100 wrapped around the outer circumference of the pipeline, with a locking carriage 200 connected between the two ends of the chain 100; a scanning device 300 is connected to the chain, and two rows of rollers A 110 are provided on the chain. The locking carriage 200 includes a frame 210, with a fixed seat 220 and a sliding seat 230 on its lower side. Rollers B 240 are installed on both the fixed seat and the sliding seat. Connecting mechanisms for connecting the chain are respectively provided on the side of the fixed seat away from the sliding seat and the side of the sliding seat away from the fixed seat. The locking carriage connects to the two ends of the chain through the connecting mechanisms at both ends, and the chain is tightened by sliding the sliding seat, so that the entire chain can grip the pipeline tightly. It is easy to install and easy to lock.

[0028] In this embodiment, the chain 100 is composed of several chain links 120 connected together. One end of each chain link 120 has rollers A and male connectors 130 on both sides, while the other end has rollers A and female connectors 140 that can connect to the male connector on both sides. The rollers A at both ends are located on different sides. Each chain link has a wheel located on a different side at each end. The chain links 120, when connected to form a chain, form a double-wheel structure, enhancing the stability of the walking trajectory. Adjacent chain links can be quickly connected or disconnected via male and female connectors. The number of chain links can be increased or decreased according to the pipe diameter, thereby adjusting the chain length, reducing assembly difficulty, accelerating on-site installation, and improving testing efficiency.

[0029] In this embodiment, the link 120 is Z-shaped and has an arc-shaped structure that bulges upward in the middle to adapt to the arc surface of the pipe.

[0030] In this embodiment, the male connector 130 is frustum-shaped, and the female connector 140 includes a slot 141 on one side of the chain link. A collar 142 that can be inserted into the slot is rotatably connected to the slot. The inner hole of the collar is conical, and the collar is rotatably engaged with the slot through a bearing.

[0031] In this embodiment, a through hole extending to the other side of the chain link is provided at the bottom of the slot, and a screw 143 passing through the through hole is provided on the other side of the chain link. The male connector end face is provided with a threaded hole 131 for connecting with the screw. During assembly, the male connector is inserted into the collar 142 of the female connector, and the screw 143 is locked into the threaded hole of the male connector.

[0032] In this embodiment, the frame 210 is provided with an elongated groove 211 that slides with the sliding seat. One end of the frame has a threaded hole that passes through one end of the elongated groove. A lead screw 250 is installed in the threaded hole. The end of the lead screw located inside the elongated groove is rotatably connected to the sliding seat, and the end of the lead screw located outside the elongated groove is fixedly connected to a rotating handwheel. The sliding position of the sliding seat is adjusted by the lead screw 250. Before use, the lead screw 250 is placed at the rightmost end. After the chain is installed, the chain is tightened by rotating the lead screw 250. Locking is convenient and easy to operate.

[0033] In this embodiment, the connecting mechanism includes a bracket 260 fixedly connected to a fixed seat or a sliding seat, and a connector 270 hinged to the bracket. The free end of the connector is provided with a female or male connector that can mate with a male or female connector on a chain link. Specifically, the connector on the fixed seat side uses a male connector, and the connector on the sliding seat side uses a female connector. Depending on the connector structure at both ends of the chain, their positions can be interchanged. A pair of guide rods 221 are fixedly connected to the fixed seat 220 facing the sliding seat. The sliding seat has guide holes through which the guide rods pass and slide. The engagement of the guide rods and guide holes, as well as the engagement of the sliding seat and the slot, achieves dual guidance, improving the stability and reliability of the sliding seat.

[0034] In this embodiment, the hinged end of the connector 270 extends into a limiting plate 271. The limiting plate has several arc-shaped limiting holes 272, and the side of the bracket has limiting screws 261 that mate with the limiting holes. The bracket has telescopic pins 262 on both sides, and the hinged end of the connector has pin holes on both sides that engage with the telescopic pins. The telescopic pins enable quick disassembly and assembly of the connector and bracket. During installation, pull out the telescopic pin, insert the connector, and release the pin. The spring force allows the telescopic pin to automatically insert into the pin holes on both sides of the connector, completing the connection. Simultaneously, the connector can be adjusted by swinging to accommodate pipes of different diameters. After adjustment, inserting the limiting screws 261 into the corresponding limiting holes will fix the angle of the connector.

[0035] In this embodiment, the frame has hollowed-out channels 212 on both sides that lead to the long groove 211 and are parallel to the long groove. Set screws are connected to both sides of the sliding seat. Pads 290 located outside the hollowed-out channels are provided on both sides of the frame. The set screws pass through the pads and the hollowed-out channels. After the sliding seat moves into place, the set screws can be used to help lock the sliding block to fix its position and prevent it from loosening.

[0036] In this embodiment, the scanning device 300 includes a fixed frame 310 and a pair of fixed rods 320 connected to the fixed frame 310. The bottom of the fixed frame is connected to a link of a chain. The fixed rods 320 are provided with a first movable frame 330 and a second movable frame 340 that can slide relative to each other. A probe holder 350 is hinged to the lower part of the first movable frame. A detection probe 360 ​​is clamped and connected to the clamping end of the probe holder. A tension spring 351 is connected between the hinged end of the probe holder and the first movable frame on the side opposite to the clamping end. A roller C341 is installed on the lower part of the second movable frame. Clamping screws for fixing the detection probe 360 ​​are provided on both sides of the clamping end of the probe holder. The tension spring provides a buffering effect to the probe holder, which can ensure the flexible coupling of the detection probe.

[0037] The scanning device 300 is equipped with roller C341 as an auxiliary wheel to assist in supporting the scanning device 300, which can improve the stability of the scanning device 300 and ensure that the detection probe works smoothly. In the specific implementation process, in order to improve the versatility of components, a chain link with double wheels can be directly connected to the lower part of the second movable frame.

[0038] In this embodiment, the fixed rod 320 is provided with a third movable frame 370 that can slide relative to it. A fixed block 380 is connected to the third movable frame. A sliding and telescopic connecting rod 381 is provided at the lower end of the fixed block. A wheel frame 382 is fixedly connected to the lower end of the connecting rod. A spring 383 is sleeved on the connecting rod and located between the third movable frame and the wheel frame. An encoder 390 is provided on one side of the wheel frame. An induction wheel 391 connected to the encoder shaft is provided in the middle of the wheel frame. The encoder and the detection probe work together to accurately locate the weld defect.

[0039] In this embodiment, the top of the first movable frame, the second movable frame, and the third movable frame are provided with locking screws 331 for abutting the fixing rod. After the positions of the first movable frame, the second movable frame, and the third movable frame are adjusted to the correct positions, they are tightened by locking screws 331.

[0040] In this embodiment, rollers A, B, and C are all magnetic wheels.

[0041] The installation method of the phased array ultrasonic testing pipeline circumferential chain locking device of this utility model:

[0042] (1) Assemble the locking car and the scanning device, and assemble the chain of the corresponding length according to the diameter of the pipe to be inspected;

[0043] (2) Wrap the chain around the outside of the pipe, connect the locking car between the beginning and end of the chain, connect the scanning device to the chain, and if the chain length is found to be unsuitable during the process, the chain links can be added or removed.

[0044] (3) Adjust the position of the sliding seat on the locking car and tighten the chain to firmly fix the entire device to the part of the pipeline to be tested;

[0045] (4) The device slides on the trajectory of the part of the pipeline to be inspected and the inspection and scanning work begins.

[0046] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0047] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0048] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0049] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A phased array ultrasonic testing pipeline circumferential chain locking device, characterized in that: The device includes a chain wrapped around the outer circumference of a pipe, with a locking trolley connecting the two ends of the chain; a scanning device is connected to the chain, and two rows of rollers A are provided on the chain; the locking trolley includes a frame, with a fixed seat and a sliding seat on the lower side of the frame, and rollers B are installed on both the fixed seat and the sliding seat. The fixed seat away from the sliding seat and the sliding seat away from the fixed seat are respectively provided with connecting mechanisms for connecting the chain.

2. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 1, characterized in that: The chain is composed of several links connected together, and the links are Z-shaped. One end of each link is provided with rollers A and male connectors on both sides, and the other end of the link is provided with rollers A and female connectors that can be connected to the male connectors on both sides. The rollers A at the two ends are located on different sides.

3. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 2, characterized in that: The male connector is frustum-shaped, and the female connector includes a slot on one side of the chain link. A collar that can be inserted into the slot is rotatably connected to the male connector. The inner hole of the collar is conical.

4. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 3, characterized in that: The bottom of the slot is provided with a through hole that extends to the other side of the chain link. The other side of the chain link is provided with a screw that passes through the through hole. The end face of the male connector is provided with a threaded hole for connection with the screw.

5. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 1, characterized in that: The frame is provided with a long groove that slides with the sliding seat. One end of the frame is provided with a threaded hole that passes through one end of the long groove. A lead screw is provided in the threaded hole. One end of the lead screw is rotatably connected to the sliding seat, and the other end of the lead screw is fixedly connected to a rotating handwheel.

6. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 1, characterized in that: The connecting mechanism includes a bracket fixedly connected to a fixed seat or a sliding seat, and a connector hinged to the bracket. The free end of the connector is provided with a female or male connector that can mate with a male or female connector on a chain link. A pair of guide rods are fixedly connected to the side of the fixed seat facing the sliding seat. The sliding seat is provided with guide holes for the guide rods to pass through and slide with it.

7. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 6, characterized in that: The hinged end of the connector extends into a limiting plate, which has several arc-shaped limiting holes. The side of the bracket has limiting screws that mate with the limiting holes. The bracket has telescopic pins on both sides, and the hinged end of the connector has pin holes that mate with the telescopic pins.

8. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 1, characterized in that: The scanning device includes a fixed frame and a pair of fixed rods connected to the fixed frame. The bottom of the fixed frame is connected to a link of a chain. The fixed rods are provided with a first movable frame and a second movable frame that can slide relative to each other. A probe holder is hinged to the lower part of the first movable frame. A detection probe is clamped and connected to the clamping end of the probe holder. A tension spring is connected between the hinged end of the probe holder and the first movable frame on the side opposite to the clamping end. A roller C is installed on the lower part of the second movable frame.

9. The phased array ultrasonic testing pipeline circumferential chain locking device according to claim 8, characterized in that: The fixed rod is provided with a third movable frame that can slide relative to it. A fixed block is connected to the third movable frame. A sliding and telescopic connecting rod is provided at the lower end of the fixed block. A wheel frame is fixedly connected to the lower end of the connecting rod. A spring is sleeved on the connecting rod between the third movable frame and the wheel frame. An encoder is provided on one side of the wheel frame. An induction wheel connected to the encoder shaft is provided in the middle of the wheel frame.

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