A pipeline inner wall weld detection device

Abstract

The utility model relates to pipeline weld joint detection technical field, specifically is a pipeline inner wall weld joint detection device, the utility model discloses the support left -hand end is provided with the flaw detection lamp for the pipeline inner wall weld joint detection. The utility model discloses through the cross -shaped slide of dismantling component and the cooperation of sliding slot, and limit block can be driven to separate limit slot by pulling pull rod, and directly separate flaw detection lamp and support, and reverse operation when installing, and first spring automatic push limit block embeds limit slot, and staggered design ensures that the connection is stable, the whole process does not need special tool, and the operation time is shortened, and the first spring of dismantling component provides the sustained reset spring, and the staggered design of limit block and limit slot enhances the connection stability, and the second spring of limit component ensures that the plug rod is closely combined with the plug groove, can bear the vibration and impact in the pipeline. The whole structure has good sealing performance, can adapt to high pressure, dust, oil dirt and other complex working conditions, and guarantees the stability of detection process.

Description

Technical Field

[0001] This utility model relates to the field of pipeline weld inspection technology, specifically a pipeline inner wall weld inspection device. Background Technology

[0002] In industries such as oil and gas transportation, chemical pipelines, and municipal pipe networks, non-destructive testing of weld seams on the inner wall of pipelines is a key link in ensuring the long-term safe operation of pipelines. As the core lighting component of pipeline inner wall weld seam inspection devices, the brightness and stability of the flaw detector lamp directly determine the accuracy of weld defect identification.

[0003] Existing pipe internal wall weld inspection devices typically use bolt-locked, adhesive-bonded, or integrated assembly structures with the inspection body to adapt to complex conditions such as high pressure, dust, and oil contamination within pipelines, while ensuring seismic resistance, sealing performance, and illumination angle stability during inspection. However, existing fixing methods require gradual disassembly using specialized tools, and the limited operating space in some concealed connection structures leads to cumbersome and time-consuming disassembly processes. Repeated disassembly can also cause secondary problems such as seal failure and loosening of connections, increasing maintenance costs and equipment downtime, and reducing the on-site adaptability efficiency of the inspection device. This makes it difficult to meet the actual needs of efficient operation and maintenance and flexible inspection. Therefore, we propose a pipe internal wall weld inspection device. Summary of the Invention

[0004] The purpose of this invention is to provide a device for detecting weld seams on the inner wall of a pipeline, so as to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions: A pipe inner wall weld inspection device includes a support, a flaw detector lamp for inspecting pipe inner wall welds is provided at the left end of the support, and pulleys for moving inside the pipe are fixedly connected at equal intervals to the outer wall of the support. A disassembly assembly is provided between the bracket and the flaw detector lamp. The flaw detector lamp is connected to the bracket through the disassembly assembly. A limit assembly is provided between the pulley and the bracket. The pulley is detachably connected to the bracket through the limit assembly.

[0006] Preferably, the disassembly assembly includes a connecting seat fixedly connected to the right end of the flaw detector lamp. The bracket is slidably connected to the connecting seat. Two sets of sliding grooves are equidistantly formed in the connecting seat with the bracket as the center. A sliding plate is slidably connected in the sliding groove. A pull rod is fixedly connected to the end of the sliding plate away from the bracket. The pull rod is slidably connected to the connecting seat. A first spring is wound around the surface of the pull rod. A limit block is fixedly connected to the end of the sliding plate facing the bracket. A limit groove is formed on the bracket surface corresponding to the outer end of the limit block. The limit block is slidably connected to the limit groove. The two sets of limit blocks and limit grooves are all designed to be staggered.

[0007] Preferably, one end of the first spring is welded to the inner wall of the slide groove, and the other end of the first spring is welded to the surface of the slide plate.

[0008] Preferably, the slide plate has a cross-shaped design, and the slide groove is a cross-shaped groove adapted to the slide plate.

[0009] Preferably, the limiting component includes three sets of sockets fixedly connected to the outer wall of the bracket. A plug block is slidably connected inside the socket. The outer end of the plug block is fixedly connected to a pulley. A plug rod is slidably connected laterally inside the socket. A connecting rod is fixedly connected to the end of the plug rod away from the pulley. The connecting rod is slidably connected to the socket. A second spring is wound around the surface of the connecting rod inside the socket. A slot is opened on the surface of the plug block corresponding to the outer end of the second spring. The second spring is inserted into the slot.

[0010] Preferably, a pull ring is fixedly connected to the side of the connecting rod away from the socket, and the pull ring is designed in a circular shape.

[0011] Preferably, the plug is rectangular in shape, and the socket has a countersunk hole that matches the plug.

[0012] The beneficial effects of this utility model are: 1. This utility model utilizes the cross-shaped sliding plate and groove of the disassembly component. Pulling the lever causes the limiting block to disengage from the limiting groove, directly separating the flaw detector lamp from the bracket. During installation, the operation is reversed; the first spring automatically pushes the limiting block into the limiting groove. The misalignment design ensures a stable connection. The entire process requires no special tools, shortening operation time and avoiding sealing failure and loosening caused by repeated disassembly and assembly. The first spring of the disassembly component provides continuous restoring force, and the misalignment design of the limiting block and limiting groove enhances connection stability. The second spring of the limiting component ensures a tight fit between the insertion rod and the slot, and can withstand vibration and impact within the pipeline. The overall structure has good sealing performance and can adapt to complex working conditions such as high pressure, dust, and oil, ensuring the stability of the testing process.

[0013] 2. The limiting component of this utility model only requires pulling the circular ring to drive the plug rod out of the slot, and the pulley can be quickly disassembled for replacement. During installation, the plug block is inserted into the countersunk hole of the socket, and the second spring pushes the plug rod to automatically lock into the slot. The rectangular plug block and the countersunk hole cooperate to ensure accurate positioning, avoid deviation when the pulley moves, and extend service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a bottom view structural diagram of this utility model; Figure 3 This is a schematic diagram of the disassembly structure of the components of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the limiting component of this utility model.

[0015] The following labels are used in the attached diagram: 1. Bracket; 2. Flaw detector; 3. Pulley; 4. Disassembly assembly; 41. Connecting seat; 42. Slide groove; 43. Slide plate; 44. Pull rod; 45. First spring; 46. Limiting block; 47. Limiting groove; 5. Limiting assembly; 51. Socket; 52. Insert block; 53. Insert rod; 54. Connecting rod; 55. Pull ring; 56. Second spring; 57. Slot. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1-4 As shown, a pipe inner wall weld inspection device includes a bracket 1. A flaw detector 2 for inspecting pipe inner wall welds is mounted on the left end of the bracket 1. Pulleys 3 for moving within the pipe are fixedly connected at equal intervals to the outer wall of the bracket 1. A disassembly assembly 4 is provided between the bracket 1 and the flaw detector 2, connecting the flaw detector 2 to the bracket 1 via the disassembly assembly 4. A limiting assembly 5 is provided between the pulleys 3 and the bracket 1, forming a detachable connection between the pulleys 3 and the bracket 1 via the limiting assembly 5. The disassembly assembly 4 includes a connecting seat 41 fixedly connected to the right end of the flaw detector 2. The bracket 1 slides against the connecting seat 41. The connecting seat 41 has two sets of sliding grooves 42 equidistantly arranged around the support 1. A sliding plate 43 is slidably connected in the sliding groove 42. A pull rod 44 is fixedly connected to the end of the sliding plate 43 away from the support 1. The pull rod 44 is slidably connected to the connecting seat 41. A first spring 45 is wound around the surface of the pull rod 44. A limit block 46 is fixedly connected to the end of the sliding plate 43 facing the support 1. A limit groove 47 is opened on the surface of the support 1 corresponding to the outer end of the limit block 46. The limit block 46 and the limit groove 47 are slidably connected. The two sets of limit blocks 46 and the limit groove 47 are all designed to be staggered.

[0018] In use, hold the pull rod 44 of the disassembly component 4 and apply outward pulling force to drive the slide plate 43 to slide along the slide groove 42, compressing the first spring 45. The slide plate 43 drives the limiting block 46 to move synchronously until the limiting block 46 is completely disengaged from the limiting groove 47 on the bracket 1, releasing the fixation between the flaw detector 2 and the bracket 1. Pull the flaw detector 2 outward to separate the connecting seat 41 from the bracket 1, completing the disassembly of the flaw detector 2, which can then be inspected or replaced. Align the connecting seat 41 of the flaw detector 2 with the bracket 1, push the flaw detector 2 to make the connecting seat 41 slide against the bracket 1, release the pull rod 44, and the first spring 45 releases its elastic potential energy, pushing the slide plate 43 and the limiting block 46 back to their original positions. The limiting block 46 is embedded in the limiting groove 47. Because the two sets of limiting blocks 46 and limiting grooves 47 are designed to be staggered, the flaw detector 2 can be prevented from rotating or falling off on its own, achieving a stable connection.

[0019] As a technical optimization of this utility model, one end of the first spring 45 is welded to the inner wall of the slide groove 42, and the other end of the first spring 45 is welded to the surface of the slide plate 43.

[0020] In practice, the welding fixing method can ensure that the two ends of the first spring 45 are firmly connected, preventing it from detaching from the component during long-term tension and compression cycles. It is suitable for the working environment with frequent vibrations inside the pipeline, while ensuring that the elastic force of the first spring 45 is stable and always provides sufficient clamping force for the limit block 46.

[0021] As a technical optimization of this utility model, the slide plate 43 is designed in a cross shape, and the slide groove 42 is opened into a cross groove that is adapted to the slide plate 43.

[0022] In practice, the combination of the cross-shaped structure and the cross groove can strictly limit the rotational freedom of the actuation plate 43, ensuring that the slide plate 43 slides only along the axial direction of the slide groove 42, avoiding the slide plate 43 from shifting and causing the limit block 46 to fail to accurately align with the limit groove 47, while improving the smoothness of the slide plate 43 and reducing component wear.

[0023] As a technical optimization of this utility model, the limiting component 5 includes three sets of sockets 51 fixedly connected to the outer wall of the bracket 1. A plug block 52 is slidably connected inside the socket 51. The outer end of the plug block 52 is fixedly connected to the pulley 3. A plug rod 53 is slidably connected laterally inside the socket 51. A connecting rod 54 is fixedly connected to the end of the plug rod 53 away from the pulley 3. The connecting rod 54 is slidably connected to the socket 51. A second spring 56 is wound around the surface of the connecting rod 54 inside the socket 51. A slot 57 is opened on the surface of the plug block 52 corresponding to the outer end of the second spring 56. The second spring 56 is inserted into the slot 57.

[0024] In use, hold the circular pull ring 55 of the limiting component 5 and pull the connecting rod 54 outward to drive the insertion rod 53 to slide along the socket 51, compressing the second spring 56. The insertion rod 53 disengages from the slot 57 on the insertion block 52, releasing the pulley 3 from the socket 51. Pull out the insertion block 52 to disengage it from the countersunk hole of the socket 51, completing the disassembly of the pulley 3. Align the rectangular insertion block 52 of the new pulley 3 with the countersunk hole of the socket 51 and insert the insertion block 52 until it fits the bottom. Release the pull ring 55. Spring 56 resets and pushes connecting rod 54 and insert rod 53 to move. Insert rod 53 is inserted into slot 57 of insert block 52, realizing the quick fixation of pulley 3. After the flaw detection lamp 2 and pulley 3 are installed, the device is placed in the pipeline to be inspected. The pulley 3 contacts the inner wall of the pipeline. Pushing bracket 1 can drive the device to move smoothly in the pipeline. Turn on flaw detection lamp 2 and illuminate the weld seam on the inner wall of the pipeline. The staff can observe the weld seam condition through external observation equipment or built-in camera, identify defects, and complete the inspection operation.

[0025] As a technical optimization of this utility model, a pull ring 55 is fixedly connected to the side of the connecting rod 54 away from the socket 51, and the pull ring 55 is designed in a circular shape.

[0026] In practice, the circular design is ergonomic, making it easy for operators to hook and pull with their fingers or tools. Even with non-slip gloves on, it is easy to apply force while avoiding slippage when applying force, thus improving the ease of disassembling and assembling pulley 3.

[0027] As a technical optimization of this utility model, the plug 52 is rectangular in shape, and the socket 51 has a countersunk hole that matches the plug 52.

[0028] In practice, the cooperation between the rectangular plug 52 and the countersunk hole can restrict the rotation of the plug 52 in the socket 51, ensuring that the rolling direction of the pulleys 3 is consistent after installation, and avoiding deviation that affects the movement of the device; the countersunk hole can also axially position the plug 52, preventing the plug 52 from being installed too deep or too shallow, ensuring that the height of the three sets of pulleys 3 is uniform, and making the device move more smoothly in the pipeline.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for inspecting weld seams on the inner wall of a pipeline, comprising a support (1), characterized in that, The left end of the bracket (1) is provided with a flaw detector (2) for inspecting the weld seam on the inner wall of the pipe, and the outer wall of the bracket (1) is fixedly connected with pulleys (3) for moving inside the pipe at equal intervals. A disassembly assembly (4) is provided between the bracket (1) and the flaw detector (2). The flaw detector (2) is connected to the bracket (1) through the disassembly assembly (4). A limiting assembly (5) is provided between the pulley (3) and the bracket (1). The pulley (3) is detachably connected to the bracket (1) through the limiting assembly (5).

2. The pipe inner wall weld inspection device according to claim 1, characterized in that, The disassembly assembly (4) includes a connecting seat (41) fixedly connected to the right end of the flaw detector (2). The bracket (1) is slidably connected to the connecting seat (41). Two sets of sliding grooves (42) are equidistantly provided in the connecting seat (41) with the bracket (1) as the center. A sliding plate (43) is slidably connected in the sliding groove (42). A pull rod (44) is fixedly connected to the end of the sliding plate (43) away from the bracket (1). The pull rod (44) is slidably connected to the connecting seat (41). A first spring (45) is wound around the surface of the pull rod (44). A limit block (46) is fixedly connected to the end of the sliding plate (43) facing the bracket (1). A limit groove (47) is provided on the surface of the bracket (1) corresponding to the outer end of the limit block (46). The limit block (46) is slidably connected to the limit groove (47). The two sets of limit blocks (46) and limit grooves (47) are all designed to be staggered.

3. The pipe inner wall weld inspection device according to claim 2, characterized in that, One end of the first spring (45) is welded to the inner wall of the slide groove (42), and the other end of the first spring (45) is welded to the surface of the slide plate (43).

4. The pipe inner wall weld inspection device according to claim 2, characterized in that, The slide plate (43) is designed in a cross shape, and the slide groove (42) is a cross groove adapted to the slide plate (43).

5. The pipe inner wall weld inspection device according to claim 1, characterized in that, The limiting component (5) includes three sets of sockets (51) fixedly connected to the outer wall of the bracket (1). A plug (52) is slidably connected inside the socket (51). The outer end of the plug (52) is fixedly connected to the pulley (3). A plug rod (53) is slidably connected inside the socket (51). A connecting rod (54) is fixedly connected to one end of the plug rod (53) away from the pulley (3). The connecting rod (54) is slidably connected to the socket (51). A second spring (56) is wound around the surface of the connecting rod (54) inside the socket (51). A slot (57) is opened on the surface of the plug (52) corresponding to the outer end of the second spring (56). The second spring (56) is inserted into the slot (57).

6. The pipe inner wall weld inspection device according to claim 5, characterized in that, The connecting rod (54) is fixedly connected to a pull ring (55) on the side away from the socket (51), and the pull ring (55) is designed in a circular shape.

7. A pipe inner wall weld inspection device according to claim 5, characterized in that, The plug (52) is rectangular in shape, and the socket (51) has a countersunk hole that matches the plug (52).

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