A process for detecting cracks in a wear-resistant metal composite pipe

Abstract

The application discloses a kind of wear-resistant metal composite pipe crack detection processes, the process uses a kind of crack detection device, the device includes: main unit, inspection unit, offset control unit, the main unit includes: two groups of base, rotation roller is symmetrically arranged on the base, U-shaped seat is located at the base side, driving motor is installed on the U-shaped seat, the U-shaped seat is rotatably connected with rolling assembly, and rolling assembly, rotation roller synchronous rotation.The application is rotated by driving motor to drive rotating wheel, every time the contact between conical surface wheel and inclined conical arch plate makes conical surface wheel roll along the inclined conical slope of inclined conical arch plate, so as to force the up and down movement of pressing rod, and then realize the regular left and right movement of movable frame under the cooperation of sliding pin and inclined frame, and then control ultrasonic probe to scan, improve detection range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipes, in particular to a wear-resistant metal composite pipe crack detection process. BACKGROUND

[0002] In addition to the wear-resistant properties of ordinary metal pipes, the inner wall of the metal composite pipe also has good corrosion resistance. However, when the length of the metal composite pipe is connected, the annular welding is still used. For the weld of the welding, the quality directly affects the overall performance of the pipe, so the crack detection is indispensable.

[0003] The existing detection process generally uses an ultrasonic probe to scan the weld. When the sound wave encounters different parts of the object surface (such as surface unevenness, cracks, welding points, foreign matter intervention, etc.), reflection will also occur. According to these reflection signals, the internal situation of the object is analyzed. However, for some large pipes, the weld is large, and the detection range of the traditional scanning method is limited, making it difficult to check the entire weld and not very convenient to operate. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title. Such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above problems of the existing wear-resistant metal composite pipe crack detection process, the present application is proposed.

[0006] To solve the above technical problems, the present application provides the following technical solutions:

[0007] A wear-resistant metal composite pipe crack detection process uses a crack detection device, which includes a main unit, an inspection unit and an offset control unit. The process includes the following steps:

[0008] Step 1: The metal composite pipe to be detected is lifted onto the rotating roller of the base, so that the weld of the pipe is aligned below the ultrasonic probe, and the wheel spacing of the pressure assembly is adjusted;

[0009] Step 2: Synchronously start the multiple drive motors to drive the rolling pressure assembly to rotate in the same direction, and at the same time, the rotating roller rotates to realize the circumferential movement of the pipe;

[0010] Step 3: During the rotation of the rotating wheel, each contact between the pressure assembly and the inclined conical arch plate will make the conical surface wheel roll along the inclined conical slope surface of the inclined conical arch plate, thereby forcing the pressure rod to move up and down;

[0011] Step four: the pressure rod moves up and down while driving the slide pin to slide on the inclined frame, when the slide pin moves up, the inclined frame moves laterally to one side under force, and when the slide pin moves down, the inclined frame moves laterally to the other side under force, thereby allowing the movable frame to reciprocate with the horizontal sliding sleeve;

[0012] Step five: the H-shaped mounting bracket drives the ultrasonic probe to reciprocate within a certain amplitude, and cooperates with the continuous annular rotation of the pipeline, so as to realize more precise detection of the weld;

[0013] The main unit comprises: two groups of bases, rotating rollers symmetrically arranged on the bases, a U-shaped seat located on one side of the base, a driving motor mounted on the U-shaped seat, a rolling assembly rotatably connected to the U-shaped seat, and the rolling assembly and the rotating roller synchronously rotate;

[0014] The inspection unit comprises: a movable frame, an H-shaped mounting bracket fixedly arranged on the movable frame, and an ultrasonic probe mounted on the bottom side of the H-shaped mounting bracket;

[0015] The offset control unit comprises: a pressure rod vertically arranged above the rolling assembly, a slide pin arranged on the pressure rod, an inclined frame symmetrically fixedly connected to the movable frame through a fixed support, the slide pin being slidingly arranged in the inclined frame, and the bottom end of the pressure rod being fixedly connected with a pressure receiving assembly.

[0016] As a preferred scheme of the crack detection process for the wear-resistant metal composite pipe, the crack detection device further comprises a guide rail unit, the guide rail unit comprising: a second fixed frame fixedly arranged on one side of the U-shaped seat, a longitudinal sliding sleeve fixedly connected to the second fixed frame, a first fixed frame fixedly arranged between the two U-shaped seats, and a horizontal sliding sleeve fixedly arranged on the first fixed frame.

[0017] As a preferred scheme of the crack detection process for the wear-resistant metal composite pipe, the movable frame and the horizontal sliding sleeve are in lateral sliding cooperation, and the pressure rod and the longitudinal sliding sleeve are in vertical sliding cooperation.

[0018] As a preferred scheme of the crack detection process for the wear-resistant metal composite pipe, the rolling assembly comprises: a rotating wheel fixedly arranged on the output end of the driving motor, a plurality of arcuate bodies arranged on the rotating wheel, and inclined conical arch plates symmetrically arranged on each of the arcuate bodies, and the plurality of arcuate bodies are arranged in a uniform annular array.

[0019] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the pressure assembly comprises a mounting frame fixedly arranged at the bottom side of the pressure rod, a threaded shaft rotatably arranged on the mounting frame, a flat wheel symmetrically arranged on the threaded shaft, and a conical wheel arranged on the flat wheel, and the flat wheel is adjustable in interval on the threaded shaft.

[0020] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the first adjusting nut and the second adjusting nut are arranged on the two sides of the flat wheel and the conical wheel respectively, and the first adjusting nut and the second adjusting nut are threadedly matched with the threaded shaft.

[0021] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the conical wheel is provided with anti-skid lines, and the inclined surface of the conical wheel is matched with the inclined surface of the inclined conical arched plate.

[0022] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the output shaft of the driving motor is fixedly connected with a second transmission wheel at one end penetrating the U-shaped seat, the rotating center shaft of the rotating roller is fixedly connected with a first transmission wheel penetrating the base, and the first transmission wheel and the second transmission wheel are provided with a transmission belt.

[0023] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the inclination angle of the inclined frame is 30-60 degrees.

[0024] As a preferred scheme of the crack detection process of the wear-resistant metal composite pipe, the adjusting method of the wheel interval of the pressure assembly in the first step is that the outermost second adjusting nut is first loosened outward, then the first adjusting nut is rotated to clamp the flat wheel, and vice versa, the first adjusting nut is first loosened, and then the second adjusting nut is rotated to clamp, and the conical surface of the conical wheel is aligned with the inclined surface of the inclined conical arched plate during adjustment.

[0025] The beneficial effects of the present application are as follows:

[0026] The driving motor drives the rotating wheel to rotate, and each contact between the conical wheel and the inclined conical arched plate makes the conical wheel roll along the inclined conical slope surface of the inclined conical arched plate, so as to force the pressure rod to move up and down, and then the movable frame moves left and right regularly under the cooperation of the sliding pin and the inclined frame, so as to control the ultrasonic probe to scan, and improve the detection range.

[0027] When the ultrasonic probe performs a certain amplitude of reciprocating scanning, the rotation of the plurality of rotating rollers cooperates to make the pipe polarity rotate in a ring shape, which greatly improves the detection range of ultrasonic monitoring, so as to realize more fine detection of the weld, and the whole detection process is automatic and very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Among them:

[0029] Figure 1 A side overall structure schematic view of a detection device in a wear-resistant metal composite pipe crack detection process according to the present application;

[0030] Figure 2 Another side overall structure schematic view of a detection device in a wear-resistant metal composite pipe crack detection process according to the present application;

[0031] Figure 3 A structure schematic view of the detection device in a wear-resistant metal composite pipe crack detection process according to the present application when not detecting;

[0032] Figure 4 A bottom structure schematic view in Figure 3

[0033] Figure 5 A local structure schematic view of a detection device in a wear-resistant metal composite pipe crack detection process according to the present application;

[0034] Figure 6 A pressure receiving component structure schematic view of a detection device in a wear-resistant metal composite pipe crack detection process according to the present application;

[0035] Figure 7 A cooperation structure schematic view of a roller pressing component and a pressure receiving component of a detection device in a wear-resistant metal composite pipe crack detection process according to the present application;

[0036] Figure 8 A process flow schematic view of a wear-resistant metal composite pipe crack detection process according to the present application. EMBODIMENT

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail in conjunction with the drawings of the specification.

[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the scope of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0039] ​Second, the "one embodiment" or "an embodiment" referred to herein can include a particular feature, structure, or characteristic. The various embodiments appearing at different places in the specification are not necessarily all cumulative or mutually exclusive of each other.

[0040] Third, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production. Embodiment

[0041] Reference Figures 1-8 For one embodiment of the present application, a crack detection process for wear-resistant metal composite pipe is provided, which uses a crack detection device, which includes: a main unit 100, an inspection unit 200, an offset control unit 300, and a guide rail unit 400.

[0042] The main unit 100 includes: two groups of bases 101, rotating rollers 104 symmetrically arranged on the bases 101, a U-shaped seat 102 on one side of the base 101, a driving motor 103 mounted on the U-shaped seat 102, a rolling assembly 105 rotatably connected to the U-shaped seat 102, a second transmission wheel 108 fixedly connected to one end of the output shaft of the driving motor 103 penetrating the U-shaped seat 102, the output shaft directly drives the rolling assembly 105 to rotate, and the rotating center shaft of the rotating roller 104 is fixedly connected with a first transmission wheel 106, and a transmission belt 107 is arranged between the first transmission wheel 106 and the second transmission wheel 108, so that the synchronous rotation of the rolling assembly 105 and the rotating roller 104 can be reasonably realized.

[0043] Specifically, the rolling assembly 105 includes: a rotating wheel 105a fixedly arranged on the output end of the driving motor 103, a plurality of arch-shaped bodies 105b arranged on the rotating wheel 105a, and a plurality of inclined conical arch plates 105c symmetrically arranged on each arch-shaped body 105b. The plurality of arch-shaped bodies 105b are arranged in a uniform ring array. Due to the special arch design of the inclined conical arch plate 105c, when the conical surface 304c rolls, there is an up and down floating range change, thereby driving the pressure rod 301 to slide up and down.

[0044] The inspection unit 200 includes: a movable frame 201, an H-shaped mounting frame 202 fixedly arranged on the movable frame 201, and an ultrasonic probe 203 mounted on the bottom side of the H-shaped mounting frame 202.

[0045] The offset control unit 300 comprises a pressing rod 301 vertically arranged above the rolling assembly 105, a sliding pin 302 fixedly arranged on the pressing rod 301, and a slanting frame 303 symmetrically fixedly connected to the movable frame 201 through a fixed support rod, wherein the sliding pin 302 is slidingly arranged in the slanting frame 303, and the slanting angle of the slanting frame 303 is 30-60 degrees. When the sliding pin 302 vertically slides relative to the slanting frame 303, the slanting frame 303 will be forced to change the horizontal position along the inner side slope of the slanting frame 303.

[0046] The bottom end of the pressing rod 301 is fixedly connected with a pressure receiving assembly 304, which comprises a mounting frame 304a fixedly arranged on the bottom side of the pressing rod 301, a threaded shaft 304d rotatably arranged on the mounting frame 304a, a flat wheel 304b symmetrically arranged on the threaded shaft 304d, and a conical wheel 304c arranged on the flat wheel 304b. The flat wheel 304b is adjustably spaced on the threaded shaft 304d, and the flat wheel 304b and the conical wheel 304c are respectively provided with a first adjusting nut 304e and a second adjusting nut 304f on both sides, and the first adjusting nut 304e and the second adjusting nut 304f are in threaded cooperation with the threaded shaft 304d. The purpose is to clamp the flat wheel 304b and the conical wheel 304c so that they will not deviate in position when rolling. Specifically, the conical wheel 304c is provided with anti-skid lines, and the slope of the conical wheel 304c is in close contact with the slope of the slanting arch plate 105c, so as to increase the friction force and prevent slipping.

[0047] The guide rail unit 400 comprises a second fixed frame 402 fixedly arranged on one side of the U-shaped seat 102, a longitudinal sliding sleeve 404 fixedly connected to the second fixed frame 402, a first fixed frame 401 fixedly arranged between the two U-shaped seats 102, and a transverse sliding sleeve 403 fixedly arranged on the first fixed frame 401. The movable frame 201 is in transverse sliding cooperation with the transverse sliding sleeve 403, and the pressing rod 301 is in vertical sliding cooperation with the longitudinal sliding sleeve 404. The main purpose is to limit the movement range of the pressing rod 301 and the movable frame 201, so that they can only move in a specific direction, thereby enabling the movable frame 201 to stably swing left and right.

[0048] The detection process using the crack detection device comprises the following steps:

[0049] Step one: lift the metal composite pipe to be detected to the rotating roller 104 of the base 101, so that the weld joint of the pipe is aligned below the ultrasonic probe 203, and adjust the wheel spacing of the pressure assembly 304. The adjustment method is as follows: first loosen the second adjusting nut 304f on the outermost side, then rotate the first adjusting nut 304e to clamp the flat wheel 304b, and vice versa. When adjusting, ensure that the tapered surface wheel 304c is always aligned with the tapered surface of the inclined tapered arch plate 105c.

[0050] In combination Figure 7 It can be seen that the greater the spacing of the tapered surface wheel 304c, the greater the height of the relative arch-shaped body 105b after it is fitted to the inclined tapered arch plate 105c. That is, when the tapered surface wheel 304c is in contact and rolls through, it drives the up-and-down floating range of the pressure rod 301 to be greater, which directly affects the change in the lateral movement distance of the movable frame 201. Therefore, the lateral scanning range of the ultrasonic probe 203 can be controlled according to the adjustment range to meet the scanning needs of different weld joint widths.

[0051] Step two: simultaneously start the multiple drive motors 103 to drive the rolling assembly 105 to rotate in the same direction, and simultaneously rotate the rotating roller 104 to realize the circumferential movement of the pipe;

[0052] Step three: during the rotation of the rotating wheel 105a, each contact between the pressure assembly 304 and the inclined tapered arch plate 105c will make the tapered surface wheel 304c roll along the tapered surface of the inclined tapered arch plate 105c, thereby forcing the pressure rod 301 to move up and down;

[0053] Step four: while the pressure rod 301 moves up and down, the sliding pin 302 is driven to slide on the inclined frame 303. When the sliding pin 302 moves upward, the inclined frame 303 moves laterally to one side under stress, and when the sliding pin 302 moves downward, the inclined frame 303 moves laterally to the other side under stress, thereby allowing the movable frame 201 to reciprocate in conjunction with the lateral sliding sleeve 403;

[0054] Step five: the H-shaped mounting frame 202 drives the ultrasonic probe 203 to reciprocate within a certain amplitude, and cooperates with the continuous circular rotation of the pipe, thereby realizing more precise detection of the weld joint.

[0055] During use of the present application, the motor 103 drives the rotating wheel 105a to rotate, and each time the conical surface wheel 304c contacts the inclined conical arch plate 105c, the conical surface wheel 304c rolls along the inclined conical slope of the inclined conical arch plate 105c, thereby forcing the pressing rod 301 to move up and down, and then the movable frame 201 moves regularly left and right under the cooperation of the sliding pin 302 and the inclined frame 303, thereby controlling the ultrasonic probe 203 to scan, improving the detection range, and because the ultrasonic probe 203 reciprocates within a certain range, the rotation of the plurality of rotating rollers 104 cooperates to make the pipe polarity continuously rotate in a ring shape, greatly improving the detection range of ultrasonic monitoring, thereby achieving more detailed detection of the weld, and the entire detection process is automated and very convenient.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A crack detection process for wear-resistant metal composite pipes, characterized in that, This process uses a crack detection device, which includes a main unit (100), an inspection unit (200), and an offset control unit (300). The process includes the following steps: Step 1: Lift the metal composite pipe to be tested onto the rotating roller (104) of the base (101) so that the weld seam of the pipe is aligned with the ultrasonic probe (203) and adjust the wheel spacing of the pressure assembly (304). Step 2: Simultaneously start multiple drive motors (103) to drive the rolling assembly (105) to rotate synchronously in the same direction, while the rotating roller (104) rotates to realize the rotational movement of the pipeline; Step 3: During the rotation of the wheel (105a), each contact between the pressure component (304) and the inclined conical arch plate (105c) will cause the conical wheel (304c) to roll along the inclined conical slope of the inclined conical arch plate (105c), thereby forcing the pressure rod (301) to move up and down. Step 4: As the pressure rod (301) moves up and down, it drives the sliding pin (302) to slide on the inclined frame (303). When the sliding pin (302) moves upward, the inclined frame (303) is forced to move laterally to one side. When the sliding pin (302) moves downward, the inclined frame (303) is forced to move laterally to the other side, thereby allowing the movable frame (201) to reciprocate against the transverse sliding sleeve (403). Step 5: The H-shaped mounting bracket (202) drives the ultrasonic probe (203) to perform a certain amplitude of reciprocating scanning, which, in conjunction with the continuous circular rotation of the pipeline, enables more precise inspection of the weld. The main unit (100) includes: two sets of bases (101), a rotating roller (104) symmetrically rotatably arranged on the base (101), a U-shaped seat (102) located on one side of the base (101), and a drive motor (103) installed on the U-shaped seat (102). A rolling assembly (105) is rotatably connected to the U-shaped seat (102), and the rolling assembly (105) and the rotating roller (104) rotate synchronously. The inspection unit (200) includes: a movable frame (201), an H-shaped mounting bracket (202) fixedly mounted on the movable frame (201), and an ultrasonic probe (203) mounted on the bottom side of the H-shaped mounting bracket (202); The offset control unit (300) includes: a pressure rod (301) vertically disposed above the rolling assembly (105), a sliding pin (302) disposed on the pressure rod (301), and an inclined frame (303) symmetrically fixedly connected to the movable frame (201) by a fixed support rod. The sliding pin (302) is slidably disposed in the inclined frame (303), and a pressure receiving assembly (304) is fixedly connected to the bottom end of the pressure rod (301).

2. The crack detection process for wear-resistant metal composite pipes according to claim 1, characterized in that: The crack detection device further includes a guide rail unit (400), which includes a second fixing frame (402) fixedly disposed on one side of the U-shaped seat (102), a longitudinal sliding sleeve (404) fixedly connected to the second fixing frame (402), a first fixing frame (401) fixedly disposed between the two U-shaped seats (102), and a transverse sliding sleeve (403) fixedly disposed on the first fixing frame (401).

3. The crack detection process for wear-resistant metal composite pipes according to claim 2, characterized in that: The movable frame (201) is in lateral sliding engagement with the transverse sliding sleeve (403), and the pressure rod (301) is in vertical sliding engagement with the longitudinal sliding sleeve (404).

4. The crack detection process for wear-resistant metal composite pipes according to claim 3, characterized in that: The rolling assembly (105) includes: a rotating wheel (105a) fixedly mounted on the output end of a drive motor (103), a plurality of arched bodies (105b) mounted on the rotating wheel (105a), and oblique conical arch plates (105c) symmetrically mounted on each of the arched bodies (105b), wherein the plurality of arched bodies (105b) are distributed in a uniform annular array.

5. The crack detection process for wear-resistant metal composite pipes according to claim 4, characterized in that: The pressure-bearing component (304) includes: a mounting frame (304a) fixedly mounted on the bottom side of the pressure rod (301), a threaded shaft (304d) rotatably mounted on the mounting frame (304a), a flat wheel (304b) symmetrically mounted on the threaded shaft (304d), and a conical wheel (304c) mounted on the flat wheel (304b), wherein the spacing between the flat wheel (304b) and the threaded shaft (304d) is adjustable.

6. The crack detection process for wear-resistant metal composite pipes according to claim 5, characterized in that: The flat wheel (304b) and the conical wheel (304c) are respectively provided with a first adjusting nut (304e) and a second adjusting nut (304f) on both sides, and both the first adjusting nut (304e) and the second adjusting nut (304f) are threadedly engaged with the threaded shaft (304d).

7. The crack detection process for wear-resistant metal composite pipes according to claim 6, characterized in that: The conical wheel (304c) is provided with anti-slip texture, and the inclined surface of the conical wheel (304c) is in contact with the inclined surface of the inclined conical arch plate (105c).

8. The crack detection process for wear-resistant metal composite pipes according to claim 7, characterized in that: The output shaft of the drive motor (103) passes through one end of the U-shaped seat (102) and is fixedly connected to the second transmission wheel (108). The rotation center shaft of the rotating roller (104) passes through the base (101) and is fixedly connected to the first transmission wheel (106). A transmission belt (107) is provided between the first transmission wheel (106) and the second transmission wheel (108).

9. The crack detection process for wear-resistant metal composite pipes according to claim 8, characterized in that: The tilt angle of the inclined frame (303) is 30-60 degrees.

10. The crack detection process for wear-resistant metal composite pipes according to claim 9, characterized in that: The method for adjusting the wheel spacing of the pressure component (304) in step one is as follows: first, loosen the outermost second adjusting nut (304f) outward, and then rotate the first adjusting nut (304e) to clamp the flat wheel (304b). Conversely, to adjust, first rotate to loosen the first adjusting nut (304e), and then rotate the second adjusting nut (304f) to clamp it. During adjustment, ensure that the conical wheel (304c) is aligned with the conical inclined surface of the inclined conical arch plate (105c).

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