High protection steel pipe PT detection device

Abstract

The high-protection steel pipe PT detection device includes a mobile detection frame, a spray gun arranged on the mobile detection frame, and a camera device. The mobile detection frame is provided with a mounting plate, and the camera device is fixedly mounted on the plate surface of the mounting plate; it also includes a protective cover and a driving structure connected to the protective cover; the protective cover covers the camera device when the spray gun is spraying; the driving structure is used to drive the protective cover so that the protective cover covers the camera device or moves away from the camera range of the camera device. The present invention has better protection performance for the camera device when the spray gun is spraying, effectively prevents the spray agent sprayed by the spray gun from covering the camera device, ensures the service life and camera quality of the camera device, and has high PT detection efficiency.

Description

Technical Field

[0001] The invention relates to the field of steel pipe PT detection, in particular to a high-protection steel pipe PT detection device. Background Art

[0002] The pipeline industry, especially cladding pipe fittings, is developing rapidly, and the market demand for laying oil and gas pipelines across the country is increasing. In marine engineering, oil shale gas mining, and in situations where acid chloride catalysts are used, the corrosion resistance, wear resistance, tensile properties, and high temperature peeling resistance of pipe fittings are very high, and it is necessary to ensure that the cladding key has good performance. Steel pipe PT testing, that is, penetration testing, is a non-destructive special testing method. Generally, it is necessary to spray the penetrant on the inner wall of the pipeline, leave it for a period of time, clean up the excess penetrant, spray the developer, observe and determine the defects.

[0003] The current PT detection device involves a spray structure and a camera device used for detection, which are directly integrated on the same moving part that moves in the steel pipe. The protection performance of the camera device is poor, and the spray agent sprayed by the spray structure is easy to cover the camera device, which has an adverse effect on the life of the camera device and the camera quality. At the same time, it also reduces the PT detection efficiency. For example, the Chinese patent with application number CN202020120858.2 discloses an automatic PT detection device for the inner wall of a welded straight pipe. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a high-protection steel pipe PT detection device, which has better protection performance for the camera device when the spray gun is spraying, effectively preventing the spray agent sprayed by the spray gun from covering the camera device, ensuring the service life and camera quality of the camera device, and high PT detection efficiency.

[0005] The high-protection steel pipe PT detection device includes a mobile detection frame, a spray gun arranged on the mobile detection frame, and a camera device. The mobile detection frame is provided with a mounting plate, and the camera device is fixedly mounted on the plate surface of the mounting plate; it also includes a protective cover and a driving structure connected to the protective cover; the protective cover covers the camera device when the spray gun is spraying; the driving structure is used to drive the protective cover so that the protective cover covers the camera device or moves away from the camera range of the camera device.

[0006] The PT detection device in the present technical solution is designed with a protective cover that can cover the camera device. When the spray gun is spraying, the protection performance of the camera device is better, and the spray agent sprayed by the spray gun is effectively prevented from covering the camera device, thereby ensuring the service life and camera quality of the camera device, and the PT detection efficiency is high.

[0007] Preferably, the driving structure includes a cylinder 1 connected to the protective cover, a mounting platform for mounting the cylinder 1, and a cylinder 2 connected to the mounting platform; the cylinder 1 has a telescopic direction that is the same as the front shooting direction of the camera device, and drives the protective cover to cover the camera device from the front when the protective cover is facing the front of the camera device; the cylinder 2 is arranged on the side of the cylinder 1, and is used to drive the protective cover away from the camera range of the camera device. The coordinated action of the cylinder 1 and the cylinder 2 is used to drive the protective cover to cover the camera device or move it away from the camera range of the camera device, which is simple and convenient.

[0008] Preferably, the camera device is arranged below the mounting plate, and its camera direction is downward; an enclosing ring with an opening facing downward and surrounding the camera device is provided on the mounting plate; the protective cover includes a protective cover end; the end face of the enclosing ring is provided with an annular notch, and the bottom of the annular notch is provided with a sealing fitting portion for sealing contact with the protective cover end; the sealing fitting portion and the protective cover end are both annular structures; when the protective cover covers the camera device, it is inserted into the annular notch.

[0009] This design has the following advantages: 1. During the PT inspection process, since the camera device takes pictures of the penetrant, developer, etc. on the inner wall of the steel pipe, the camera device is arranged below the mounting plate, and its shooting direction is limited to downward, which effectively prevents the penetrant, developer, and other spraying agents on the inner wall of the steel pipe from falling onto the camera device and affecting the life of the camera device and the camera quality; 2. An enclosing ring with an opening facing downward and surrounding the camera device is provided on the mounting plate, and when the protective cover covers the camera device, it is inserted into the annular notch of the enclosing ring, that is, the enclosing ring plays a shielding role on the side of the protective cover, which can further prevent the spray liquid from entering the protective cover, and further prevent the spraying agent from covering the camera device, thereby ensuring the service life and camera quality of the camera device.

[0010] Preferably, the annular gap further includes a side guide surface connected to the bottom of the annular gap, and the side guide surface is an annular structure, so that the protective cover can be inserted into the annular gap more smoothly, thereby ensuring the PT detection efficiency.

[0011] When the cylinder is weak, it is easy to cause the protective cover and the end of the protective cover to be not driven properly, the end of the protective cover cannot be sealed with the sealing part, and a gap is likely to appear between the two. The existence of the gap is easy to cause the spray agent to enter the protective cover from the gap, and then cover the camera device. Therefore, preferably, an annular groove is provided at the bottom of the annular notch, the sealing part is limited in the annular groove, and a spring is provided between the sealing part and the bottom of the annular groove; the sealing part partially extends out of the annular groove under the elastic force of the spring. When the cylinder is weak, the sealing part moves downward under the elastic force of the spring to achieve sealing contact with the end of the protective cover, further improving the protection capability of the camera device, further ensuring the service life and camera quality of the camera device, and the PT detection efficiency is higher.

[0012] Preferably, a limiting portion for limiting the sealing fitting portion in the annular sliding groove is arranged on the groove wall of the annular sliding groove, and a limiting acting portion acting with the limiting portion is arranged on the sealing fitting portion.

[0013] Preferably, the end surface of the end portion of the protective cover is concave inward to form a concave ring.

[0014] Preferably, at the end of the protective cover, the inner annular surface is higher than the outer annular surface, and an inner concave ring connects the inner annular surface and the outer annular surface.

[0015] In summary, the present invention has the following beneficial effects:

[0016] 1: The present invention, by designing a protective cover capable of covering the camera device, provides better protection for the camera device when the spray gun is spraying, effectively prevents the spraying agent sprayed by the spray gun from covering the camera device, and ensures the service life and camera quality of the camera device.

[0017] 2: The present invention sets the camera device below the mounting plate and limits its camera direction to downward, which effectively prevents the spraying agents such as penetrant and developer on the inner wall of the steel pipe from falling onto the camera device and affecting the life of the camera device and the camera quality;

[0018] 3: In the present invention, the mounting plate is provided with an enclosing ring with an opening facing downwards and enclosing the camera device, and when the protective cover covers the camera device, it is inserted into the annular notch of the enclosing ring, that is, the enclosing ring plays a shielding role on the side of the protective cover, which can further prevent the spraying liquid from entering the protective cover, further prevent the spraying agent from covering the camera device, and ensure the service life and camera quality of the camera device;

[0019] 4: In the present invention, when the cylinder is exhausted, the sealing mating part moves downward under the elastic force of the spring to achieve sealing contact with the end of the protective cover, further improving the protection capability of the camera device, further ensuring the service life and camera quality of the camera device, and making the PT detection efficiency higher;

[0020] 5: In the present invention, the inner annular surface of the end of the protective cover is higher than the outer annular surface, so that the spraying agent is less likely to move from the outside to the inside of the protective cover, and the spraying agent is less likely to enter the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the PT detection device;

[0022] Figure 2 for Figure 1 Coordination diagram of the middle protective cover and the surrounding ring;

[0023] Figure 3 is a cross-sectional schematic diagram of the protective cover;

[0024] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 5 This is an enlarged view of point B in 3.

[0026] Figure 6 Another assembly diagram of the sealing mating part. DETAILED DESCRIPTION

[0027] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0028] Example: See attached Figure 1-5As shown, the high-protection steel pipe PT detection device includes a mobile detection frame 1, a spray gun 2 arranged on the mobile detection frame 1, and a camera device 3. The mobile detection frame 1 can be driven by a telescopic rod but not limited to the telescopic rod. The camera device 3 includes a camera lens, which can be a camera but not limited to the camera. The mobile detection frame 1 can be formed by connecting profiles. A mounting plate 11 is arranged on the mobile detection frame 1, and the camera device 3 is fixedly mounted on the plate surface of the mounting plate 11; it also includes a protective cover 4 and a driving structure 5 connected to the protective cover 4, the protective cover 4 is used to cover the camera device 3, when the spray gun 2 on the steel pipe PT detection device performs spraying, the driving structure 5 drives the protective cover 4 so that the protective cover 4 covers the camera device 3, when the camera device 3 on the steel pipe PT detection device performs shooting, the driving structure 5 drives the protective cover 4 so that the protective cover 4 is away from the shooting range of the camera device 3; specifically, the driving structure 5 includes a cylinder 51 connected to the protective cover 4, a driving structure 5 for mounting The mounting platform 52 for mounting the cylinder 1 51 and the cylinder 2 53 connected to the mounting platform 52, wherein the telescopic direction of the cylinder 1 51 is the same as the front shooting direction of the camera device 3, and the cylinder 2 53 is arranged on the side of the camera device 3 and is mounted on the mobile detection frame 1 through the connecting plate 54. When the spraying work is performed, the cylinder 2 53 is actuated to drive the cylinder 1 51 and the protective cover 4 to move, and drive the protective cover 4 to move to the front of the camera device 3, so that the protective cover 4 is directly For the front of the camera device 3, then, cylinder 1 51 is actuated to drive the protective cover 4 so that the protective cover 4 covers the front of the camera device 3. When the camera is being taken, cylinder 1 51 is reset, and the protective cover 4 is withdrawn. Then, cylinder 2 53 is actuated to drive the protective cover 4 away from the camera range of the camera device 3. This driving structure utilizes the coordinated action of cylinder 1 51 and cylinder 2 53 to drive the protective cover 4 to cover the camera device 3 or move it away from the camera range of the camera device 3. It is simple and convenient.

[0029] The PT detection device in the present technical solution is designed with a protective cover 4 that can cover the camera device 3. When the spray gun 2 is spraying, the protection performance of the camera device 3 is better, and the spray agent sprayed by the spray gun 2 is effectively prevented from covering the camera device 3, thereby ensuring the service life and camera quality of the camera device 3, and the PT detection efficiency is high.

[0030] Preferably, the camera device 3 is arranged below the mounting plate 11, and its camera direction is downward, which can be obliquely downward or vertically downward; the mounting plate 11 is provided with an enclosing ring 6 with an opening facing downward and surrounding the camera device 3; the protective cover 4 includes a protective cover end 41; the end face of the enclosing ring 6 is provided with an annular notch 61, and the bottom of the annular notch 61 is provided with a sealing fitting portion 62 for sealing contact with the protective cover end 41; the sealing fitting portion 62 and the protective cover end 41 are both annular structures; when the protective cover 4 covers the camera device 3, it is inserted into the annular notch 61.

[0031] The above design has the following advantages: 1. During the PT inspection process, since the camera device 3 takes pictures of the penetrant, developer, etc. on the inner wall of the steel pipe, the camera device 3 is arranged below the mounting plate 11, and its shooting direction is limited to downward, which effectively prevents the penetrant, developer, and other spraying agents on the inner wall of the steel pipe from falling onto the camera device 3 and affecting the life and shooting quality of the camera device 3; 2. An enclosing ring 6 with an opening facing downward and surrounding the camera device 3 is provided on the mounting plate 11, and when the protective cover 4 covers the camera device 3, it is inserted into the annular notch 61 of the enclosing ring 6, that is, the enclosing ring 6 plays a shielding role on the side of the protective cover 4, which can further prevent the spraying liquid from entering the protective cover 4, and further prevent the spraying agent from covering the camera device 3, thereby ensuring the service life and shooting quality of the camera device 3.

[0032] The annular gap 61 further includes a side guide surface 63 connected to the bottom of the annular gap 61 . The side guide surface 63 is an annular structure, so that the protective cover 4 can be inserted into the annular gap 61 more smoothly, thereby ensuring the PT detection efficiency.

[0033] The end surface of the protective cover end 41 is concave inward to form an inner concave ring 411, and the sealing matching portion 62 and the inner concave ring 411 form a concave-convex matching structure, which further improves the protective effect of the protective cover 4.

[0034] The inner annular surface 412 of the protective cover end 41 is higher than the outer annular surface 413, and the inner concave ring 411 connects the inner annular surface 412 and the outer annular surface 413. In this structure, the inner annular surface 412 is higher than the outer annular surface 413, which further improves the protective effect of the protective cover 4, and the spraying agent is less likely to move from the outside to the inside of the protective cover 4, and the spraying agent is less likely to enter the protective cover 4.

[0035] When the cylinder 1 51 is weak, it is easy to cause the protective cover 4 and the protective cover end 41 to be not driven properly, the protective cover end 41 and the sealing matching part 62 cannot be sealed, and a gap is likely to appear between the two. The existence of the gap is easy to cause the spraying agent to enter the protective cover 4 through the gap and then cover the camera device 3. For this reason, in this embodiment, Figure 6 As shown, an annular groove 64 is provided at the bottom of the annular notch 61, and the sealing fitting part 62 is limited in the annular groove 64. A spring 65 is provided between the sealing fitting part 62 and the groove bottom of the annular groove 64; the sealing fitting part 62 partially extends out of the annular groove 64 under the elastic force of the spring 65. When the cylinder 1 51 is weak, the sealing fitting part 62 moves downward under the elastic force of the spring 65 to achieve sealing contact with the end 41 of the protective cover, further improving the protection capability of the camera device 3, further ensuring the service life and camera quality of the camera device 3, and the PT detection efficiency is higher. A limiting part 66 for limiting the sealing fitting part 62 in the annular groove 64 is provided on the groove wall of the annular groove 64, and a limiting action part 621 acting on the limiting part 66 is provided on the sealing fitting part 62.

[0036] The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A high-protection steel pipe PT detection device, comprising a mobile detection frame (1), a spray gun (2) arranged on the mobile detection frame (1), and a camera device (3), characterized in that: The mobile detection frame (1) is provided with a mounting plate (11), and the camera device (3) is fixedly mounted on a surface of the mounting plate (11); and further comprises a protective cover (4) and a driving structure (5) connected to the protective cover (4); The protective cover (4) covers the camera device (3) when the spray gun (2) is performing a spraying operation; The driving structure (5) is used to drive the protective cover (4) so ​​that the protective cover (4) covers the camera device (3) or moves away from the camera range of the camera device (3); The driving structure (5) comprises a cylinder 1 (51) connected to the protective cover (4), a mounting platform (52) for mounting the cylinder 1 (51), and a cylinder 2 (53) connected to the mounting platform (52); the cylinder 1 (51) has a telescopic direction that is the same as the front shooting direction of the camera device (3), and when the protective cover (4) is facing the front of the camera device (3), the protective cover (4) is driven so that the front of the protective cover (4) covers the camera device (3); the cylinder 2 (53) is arranged on the side of the cylinder 1 (51) and is used to drive the protective cover (4) away from the camera range of the camera device (3); The camera device (3) is arranged below the mounting plate (11), and its camera direction is downward; the mounting plate (11) is provided with an enclosing ring (6) with an opening facing downward and enclosing the camera device (3); The protective cover (4) comprises a protective cover end (41); The end surface of the surrounding ring (6) is provided with an annular notch (61), and the bottom of the annular notch (61) is provided with a sealing matching portion (62) for sealingly contacting the end portion (41) of the protective cover; the sealing matching portion (62) and the end portion (41) of the protective cover are both annular structures; When the protective cover (4) covers the camera device (3), it is inserted into the annular notch (61); An annular groove (64) is provided at the bottom of the annular notch (61), the sealing fitting portion (62) is limited in the annular groove (64), and a spring (65) is provided between the sealing fitting portion (62) and the groove bottom of the annular groove (64); the sealing fitting portion (62) partially extends out of the annular groove (64) under the elastic force of the spring (65) to achieve sealing contact with the end portion (41) of the protective cover; The annular notch (61) further comprises a side guide surface (63) connected to the bottom of the annular notch (61), and the side guide surface (63) is an annular structure.

2. The high protection steel pipe PT detection device according to claim 1 is characterized in that: A limiting portion (66) for limiting the sealing matching portion (62) in the annular sliding groove (64) is provided on the groove wall of the annular sliding groove (64), and a limiting action portion (621) for interacting with the limiting portion (66) is provided on the sealing matching portion (62).

3. The high protection steel pipe PT detection device according to claim 1 is characterized in that: The end surface of the protective cover end (41) is concave inwardly to form a concave ring (411).

4. The high protection steel pipe PT detection device according to claim 3 is characterized in that: The protective cover end portion (41) has an inner annular surface (412) that is higher than the outer annular surface (413), and an inner concave ring (411) connects the inner annular surface (412) and the outer annular surface (413).

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