Double-station multifunctional internal anticorrosive coating detection device

Abstract

The utility model relates to a double-station multifunctional inner anticorrosive coating detection device, which is characterized in that two steel pipe detection stations are arranged to work simultaneously, the quality of a coating on the inner wall of a steel pipe is detected through a leakage point probe, a drift diameter gauge and a coating thickness probe of a detection gun barrel, and the obtained data is processed and displayed on a PLC (Programmable Logic Controller) display control operation table. Detection types are switched through the induction limit switch and displayed through the corresponding lamps. The detection gun barrel is in a spiral state, and the occupied area of the device is reduced. The drift diameter gauge and the probe on the gun barrel can be adjusted according to the model of the steel pipe to be detected, and the position of the steel pipe can be accurately positioned so as to find the corresponding initial position. Compared with the prior art, the device has the advantages of high efficiency, wide application range, small occupied area and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coating quality detection, especially to a double-station multifunctional internal anticorrosive coating detection device. BACKGROUND

[0002] In the production process of steel pipes, the inner wall of the steel pipe often needs to be treated with anticorrosive coating. In the field of petroleum industry, great importance is attached to the quality of the internal anticorrosive coating treatment of the steel pipe, such as thickness, leakage point and drift diameter. Therefore, in the internal anticorrosive coating treatment of the steel pipe, the quality of the internal anticorrosive coating needs to be detected to prevent the thickness of the coating from being out of tolerance, causing the tool in the pipe to be blocked and the coating to be uneven, and to ensure the quality of the internal anticorrosive coating product.

[0003] At present, when detecting the internal anticorrosive coating, the method of first detecting the thickness of the internal anticorrosive coating manually, then detecting the drift diameter, and then detecting the leakage point in the next process is adopted. This method has many processes and is slow. Moreover, because the process is complicated, relevant equipment needs to be provided, so the equipment for the whole detection process is long and occupies a large area. Therefore, how to simplify the detection process of the coating in the pipe, reduce the detection equipment and improve the detection efficiency is a technical problem to be solved. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of the prior art and provides a double-station multifunctional internal anticorrosive coating detection device. By simultaneously measuring the thickness, leakage point and drift diameter, the detection process is simplified. The PLC display control console controls the operation of the gun barrel and displays the detection results. Moreover, the double stations are detected simultaneously, which further improves the efficiency.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] According to one aspect of the utility model, a double-station multifunctional internal anticorrosive coating detection device is provided, which comprises a steel pipe conveying rack, an equipment support, a gun barrel conveying module, a detection gun barrel rotating module, a detection gun barrel and a PLC display control console.

[0007] The steel pipe conveying rack, the equipment support, the gun barrel conveying module, the detection gun barrel rotating module, the detection gun barrel and the PLC display control console are connected. The steel pipe conveying rack 1 places the steel pipe to be detected. The gun barrel conveying module is arranged on the equipment support and realizes the conveying of the detection gun barrel through motor transmission and inductive limit control. The detection gun barrel rotating module cooperates with the gun barrel conveying module to make the detection gun barrel stretch and coil in the steel pipe. The PLC display control console is connected with the detection gun barrel rotating module, the gun barrel conveying module and the steel pipe conveying rack respectively to control the start and stop of the device and the input of the detection data.

[0008] Further, the steel pipe conveying rack comprises a first stand, a second stand and a third stand; two V-shaped stands are arranged side by side on each stand; the V-shaped stand comprises an insulating plate and a conductive copper plate; the conductive copper plate is connected with a leakage point counter of a PLC display control console through a leakage point detection line.

[0009] Further, the gun barrel conveying module comprises a motor driving unit and an inductive limit switch control unit; the motor driving unit comprises a speed regulating motor, a rotating gear and a pressing roller, the pressing roller is arranged above the rotating gear and connected with a telescopic rod of a pneumatic cylinder; the inductive limit switch control unit is installed and connected with the shaft of the motor driving unit through a bevel gear.

[0010] The inductive limit switch control unit comprises a bevel gear, a rotating screw, a bearing support, a fixed plate, a first inductive limit switch, a second inductive limit switch, a third inductive limit switch, a fourth inductive limit switch and a fifth inductive limit switch; the bevel gear is connected with the output shaft of the motor driving unit and the rotating screw; the rotating screw is fixed on the bearing support; the fixed plate is installed on the bearing support; the inductive limit switches are installed on the fixed plate in sequence; the inductive limit switches are connected with a motor controller of a PLC display control console.

[0011] Further, the detection gun barrel rotating module is installed side by side at the rear end of the equipment support; the automatic rotation of the detection gun barrel is controlled through a conductive slip ring at the center shaft of the detection gun barrel rotating module.

[0012] Further, the detection gun barrel is a glass steel threading pipe, which comprises a leakage point detection line and four coating thickness detection lines; a leakage point probe is installed at the front end of the detection gun barrel; a gauge is connected at the rear part of the leakage point probe; four coating thickness probes are arranged at the rear part of the gauge.

[0013] Further, the PLC display control console comprises a leakage point counter, a motor controller and a coating thickness display instrument; the leakage point counter is connected in series between the leakage point probe and the steel pipe conveying rack through a detection line, forming a conductive detection circuit; the motor controller is connected with the first inductive limit switch and the fifth inductive limit switch through a line, and controls the start and stop of the motor through the limit switches; the coating thickness display instrument is connected with the coating thickness probe, the second inductive limit switch, the third inductive limit switch and the fourth inductive limit switch through a detection line, and records and displays the coating thickness.

[0014] Further, an aluminum alloy clamping frame is connected at the front joint of the detection gun barrel; the rear side of the clamping frame is connected with the gauge; the rear joint of the detection gun barrel is connected with a conductive slip ring line; one side of the conductive slip ring line is connected with the leakage point probe and the coating thickness probe of the detection gun barrel, and the other side is connected with the leakage point counter and the coating thickness display instrument.

[0015] Further, the coating thickness probe is an ultrasonic thickness gauge, which is installed in the hole groove of the gauge in a rectangular top corner shape and is connected with the coating thickness display instrument.

[0016] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0017] (1) improve the detection efficiency: through double position design, the thickness of the coating in the pipe, the leakage point and the measurement thickness are detected simultaneously, and the detection results are recorded, analyzed and displayed, the work flow is simplified, the quality detection efficiency of the anticorrosive coating in the pipe is improved while the detection quality is ensured.

[0018] (2) wide application range: the inner wall of the steel pipe is accurately positioned through the barrel conveying module, and corresponding leakage point probes and gauge can be selected according to the measured steel pipe, and it is suitable for different types of steel pipes.

[0019] (3) small floor area: by concentrating multiple different functions on the same device, and detecting the spiral placement of the barrel, the floor area required by the detection process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structure diagram of the double-station multifunctional internal anticorrosive coating detection device.

[0021] Figure 2 It is a top view structure diagram of the double-station multifunctional internal anticorrosive coating detection device.

[0022] Figure 3 It is a front view structure diagram of the V-shaped frame of the double-station multifunctional internal anticorrosive coating detection device.

[0023] Figure 4 It is a front view structure diagram of the barrel conveying mechanism of the double-station multifunctional internal anticorrosive coating detection device.

[0024] Figure 5 It is a top view structure diagram of the barrel conveying mechanism of the double-station multifunctional internal anticorrosive coating detection device.

[0025] Figure 6 It is a side view structure diagram of the barrel conveying mechanism of the double-station multifunctional internal anticorrosive coating detection device.

[0026] Figure 7 It is a front view structure diagram of the detection barrel of the double-station multifunctional internal anticorrosive coating detection device.

[0027] Explanation of the reference numbers in the figure: 1. Steel pipe conveying platform; 11. First vertical frame; 12. Second vertical frame; 13. Third vertical frame; 14. V-shaped frame; 141. Insulation plate; 142. Conductive copper plate; 143. Leakage detection line; 2. Equipment bracket; 3. Barrel conveying module; 31. Motor transmission unit; 32. Inductive limit switch control unit; 311. Speed ​​regulating motor; 312. Rotating gear; 313. Pressing roller; 314. Cylinder; 321. Bevel gear; 322. Rotating screw; 323. Bearing bracket; 324. Fixed plate; 325. First inductive limit switch; 326. Second inductive limit switch; 327. Third inductive limit switch; 328. Fourth inductive limit switch; 329. Fifth inductive limit switch; 4. Detection barrel rotation module; 41. Conductive slip ring; 5. Detection barrel; 51. Detection circuit; 52. Leakage probe; 53. Drift gauge; 54. Coating thickness probe; 6. PLC display control console; 61. Leakage counter; 62. Motor controller; 63. Coating thickness display. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] like Figure 1 As shown, it is a main view of a double-station multifunctional internal anti-corrosion coating detection device, which includes: a steel pipe conveying platform 1, an equipment bracket 2, a barrel conveying module 3, a detection barrel rotation module 4, a detection barrel 5 and a PLC display control console 6. Among them, the steel pipe conveying platform 1, the equipment bracket 2, the barrel conveying module 3, the detection barrel rotation module 4, the detection barrel 5 and the PLC display control console 6; wherein, the steel pipe to be detected is placed on the steel pipe conveying platform 1; the barrel conveying module 3 is set on the equipment bracket 2, and the transportation of the detection barrel 5 is realized by motor drive and inductive limit control; the detection barrel rotation module 4 cooperates with the barrel conveying module 3 to make the detection barrel 5 stretch and hover inside the steel pipe; the PLC display control console 6 is respectively connected to the detection barrel rotation module 4, the barrel conveying module 3 and the steel pipe conveying platform 1 to control the start and stop of the device and the entry of detection data. The top view of the device is shown as follows Figure 2 shown.

[0030] like Figure 3As shown, the steel pipe conveying platform 1 includes a first vertical frame 11, a second vertical frame 12 and a third vertical frame 13; two V-shaped frames 14 are arranged in parallel on the vertical frames; the V-shaped frames 14 include an insulating plate 141 and a conductive copper plate 142; the conductive copper plate 142 is connected to the leakage point counter 61 of the PLC display control console 6 through a leakage point detection line 143.

[0031] The barrel conveying module 3 includes a motor transmission unit 31 and an inductive limit switch control unit 32; the motor transmission unit 31 includes a speed regulating motor 311, a rotating gear 312 and a clamping roller 313, a clamping roller 313 is provided above the rotating gear 312, and the clamping roller 313 is connected to the telescopic rod of the cylinder 314; the inductive limit switch control unit 32 is installed and connected to the shaft of the motor transmission unit 31 through a bevel gear 321. The inductive limit switch control unit 32 includes a bevel gear 321, a rotating screw 322, a bearing bracket 323, a fixed plate 324, a first inductive limit switch 325, a second inductive limit switch 326, a third inductive limit switch 327, a fourth inductive limit switch 328, and a fifth inductive limit switch 329. The bevel gear 321 is connected to the output shaft of the motor transmission unit 31 and the rotating screw 322. The rotating screw 322 is fixed to the bearing bracket 323. The fixed plate 324 is installed on the bearing bracket. The inductive limit switches are sequentially installed on the fixed plate 324. The inductive limit switches are connected to the motor controller 62 of the PLC display control console 6. The main view of the barrel conveying module 3 is shown in FIG. Figure 4 As shown, the top view is Figure 5 As shown, the side view is Figure 6 shown.

[0032] The detection barrel rotation module 4 is installed side by side at the rear end of the equipment bracket 2, and the detection barrel 5 is controlled to automatically rotate through the conductive slip ring 41 at the central axis of the detection barrel rotation module 4.

[0033] like Figure 7 As shown, the inspection barrel 5 is a fiberglass reinforced plastic conduit, containing a leak detection line and four coating thickness detection lines. A leak probe 52 is mounted at the front end of the inspection barrel 5 for detecting coating leaks. A gauge 53 is attached to the rear of the leak probe 52 for detecting coating out-of-tolerance coatings. Four coating thickness probes 54 are mounted to the rear of the gauge 53 for detecting coating thickness. The front end of the inspection barrel 5 is connected to an aluminum alloy clamping frame for clamping the conductive rubber sheet. The rear end of the clamping frame is connected to the gauge 53. The rear end of the inspection barrel 5 is connected to the conductive slip ring 41. The conductive slip ring 41 is connected to the leak probe 52 and coating thickness probe 54 of the inspection barrel 5 on one side and to a leak counter 61 and coating thickness indicator 63 on the other side. The coating thickness probe 54 is an ultrasonic thickness gauge, mounted in a rectangular corner within the slot of the gauge 53 and connected to the coating thickness indicator 63.

[0034] The PLC display control console 6 includes a leak point counter 61, a motor controller 62 and a coating thickness display instrument 63; the leak point counter 61 is connected in series between the leak point probe 52 and the steel pipe conveying rack 1 through the detection circuit 51 to form a conductive detection circuit; the motor controller 62 is connected with the first sensing limit switch 325 and the fifth sensing limit switch 329 through a line, and controls the start and stop of the motor through the limit switch; the coating thickness display instrument 63 is connected with the coating thickness probe 54, the second sensing limit switch 326, the third sensing limit switch 327 and the fourth sensing limit switch 328 through the detection circuit 51, and records and displays the coating thickness.

[0035] In the measurement process of the embodiment, the following steps are included:

[0036] S1, placing the inner coating steel pipe to be detected on the steel pipe conveying rack 1, rolling the steel pipe to the conductive V-shaped copper plate 14, and judging and selecting the matching leak point probe 52 and the gauge 53 according to the steel pipe to be detected placed on the conductive V-shaped copper plate;

[0037] S2, after the selection is completed, starting the gun pipe conveying module 3, moving the leak point probe 52 to the starting position, and closing the first sensing limit switch 325 to light up the corresponding sensing lamp;

[0038] S3, the detection gun pipe 4 enters the steel pipe body, and the motor driving unit 31 drives the detection gun pipe 5 to advance;

[0039] S4, when the second sensing limit switch 326 is closed and the corresponding sensing lamp is lighted up, the coating thickness at the position 50 cm inward from the pipe inlet is detected; when the third sensing limit switch 327 is closed and the corresponding sensing lamp is lighted up, the coating thickness at the middle position of the pipe body is detected; when the fourth sensing limit switch 328 is closed and the corresponding sensing lamp is lighted up, the coating thickness at the position 50 cm outward from the pipe outlet is detected, and the detection data is transmitted to the PLC display control console 6;

[0040] S5, when the fifth sensing limit switch 329 is closed and the corresponding sensing lamp is lighted up, the motor driving unit 31 drives the detection gun pipe 5 to start to retreat.

[0041] S6, while the detection gun pipe 5 retreats, starting the leak point detection, and the detection gun pipe 5 automatically rotates back to the plate, if there is a leak point, the leak point probe 52 is conducted with the steel pipe conveying rack 1, and the leak point counter 61 counts;

[0042] S7, when the first sensing limit switch 325 corresponding sensing lamp is lighted up again, the motor driving unit 31 and the detection gun pipe rotating module 4 stop, the leak point probe 52 returns to the starting position, and the detection ends.

[0043] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be encompassed within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dual station multi-functional internal anticorrosive coating inspection apparatus, characterized by, It includes steel pipe conveying rack (1), equipment support (2), gun barrel conveying module (3), detection gun barrel rotating module (4), detection gun barrel (5) and PLC display control operation platform (6). Wherein, the steel pipe conveying rack (1) is placed on the steel pipe to be detected; Gun barrel conveying module (3) is arranged on the equipment support (2), and the conveying of the detection gun barrel (5) is realized through motor drive and inductive limit control. Detection gun barrel rotating module (4) cooperates with gun barrel conveying module (3), controls detection gun barrel (5) to extend and coil in the steel pipe. PLC display control operation platform (6) is connected with detection gun barrel rotating module (4), gun barrel conveying module (3) and steel pipe conveying rack (1) respectively, controls the start and stop of the device and the input of detection data.

2. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 1, characterized in that, The steel pipe conveying rack (1) includes first vertical frame (11), second vertical frame (12) and third vertical frame (13); two V-shaped frames (14) are arranged on the vertical frame; the V-shaped frame (14) includes insulating plate (141) and conductive copper plate (142); the conductive copper plate (142) is connected with the leak point counter (61) of the PLC display control operation platform (6) through the leak point detection line (143).

3. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 1, characterized in that, The gun barrel conveying module (3) includes motor drive unit (31) and inductive limit switch control unit (32); the motor drive unit (31) includes speed regulating motor (311), rotating gear (312) and pressing roller (313), the pressing roller (313) is connected with the telescopic rod of the air cylinder (314); the inductive limit switch control unit (32) is installed through the bevel gear (321) and the shaft of the motor drive unit (31).

4. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 3, characterized in that, The inductive limit switch control unit (32) includes bevel gear (321), rotating screw (322), bearing support (323), fixed plate (324), first inductive limit switch (325), second inductive limit switch (326), third inductive limit switch (327), fourth inductive limit switch (328) and fifth inductive limit switch (329); wherein the bevel gear (321) is connected with the output shaft of the motor drive unit (31) and the rotating screw (322); the rotating screw (322) is fixed on the bearing support (323); the fixed plate (324) is installed on the bearing support, the inductive limit switches are installed on the fixed plate (324) in sequence, and the inductive limit switches are connected with the motor controller (62) of the PLC display control operation platform (6).

5. A dual station multi-functional internal anti-corrosion coating inspection apparatus according to claim 1, wherein, The detection gun barrel rotating module (4) is installed side by side at the rear end of the equipment support (2), and the detection gun barrel (5) is controlled to coil automatically through the conductive slip ring (41) at the center shaft of the detection gun barrel rotating module (4).

6. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 1, characterized by The detection gun barrel (5) is a glass steel threading pipe, which includes a leak point detection line and four coating thickness detection lines; the leak point probe (52) is installed at the front end of the detection gun barrel (5); the leak point probe (52) is connected with the drift gauge (53) at the rear part; four coating thickness probes (54) are arranged at the rear part of the drift gauge (53).

7. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 1, wherein The PLC display control console (6) comprises a leak point counter (61), a motor controller (62) and a coating thickness display instrument (63); the leak point counter (61) is connected in series between the leak point probe (52) and the steel pipe conveying rack (1) through a detection circuit (51), forming a conductive detection circuit; the motor controller (62) is connected with the first sensing limit switch (325) and the fifth sensing limit switch (329) through a circuit; the coating thickness display instrument (63) is connected with the coating thickness probe (54), the second sensing limit switch (326), the third sensing limit switch (327) and the fourth sensing limit switch (328) through a detection circuit (51), and records and displays the coating thickness.

8. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 1, characterized by The front end connector of the detection gun barrel (5) is connected with an aluminum alloy clamping frame, and the rear side of the clamping frame is connected with a gauge (53).

9. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 8, characterized by The rear end connector of the detection gun barrel (5) is connected with a conductive slip ring (41) circuit, one side of the conductive slip ring (41) circuit is connected with the leak point probe (52) and the coating thickness probe (54) of the detection gun barrel (5), and the other side is connected with the leak point counter (61) and the coating thickness display instrument (63).

10. A dual station multi-functional internal anticorrosive coating inspection apparatus according to claim 6, characterized in that, The coating thickness probe (54) is an ultrasonic thickness gauge, which is installed in the hole slot of the gauge (53) in a rectangular top corner shape and is connected with the coating thickness display instrument (63).

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