Pipeline flaw detection device

Abstract

The invention provides a pipeline flaw detection device, and belongs to the technical field of pipeline flaw detection. The flaw detection assembly is arranged at the front end of the fixing frame and comprises the supporting base, the multiple detection mechanisms with the telescopic length and the buffer mechanism, when the fixing frame walks in a pipeline through the walking assembly, the high-pressure air pump is started, the high-pressure air pump inflates the elastic balloon, and the elastic balloon is inflated; when the fixing frame is brought to a designated flaw detection position, the high-pressure air pump tightly abuts against the interior of the pipeline after secondary pressurization, meanwhile, the control unit is started, the control unit controls the detection mechanism to abut against the interior of the pipeline in the radial direction of the pipeline, and the pipeline is detected. And finally, the detection mechanism detects the welding seal of the pipeline, and the technical problem that in the prior art, due to the fact that the distance between a component and the ground is too short, detection cannot be conducted from the outside is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline flaw detection, and in particular relates to a pipeline flaw detection device. Background Art

[0002] The ultrasonic testing method applies a voltage emitted by a pulse oscillator to the probe. The ultrasonic pulse emitted by the probe enters the material through the acoustic coupling medium and propagates in it. After encountering a defect, part of the reflected energy returns to the probe along the original path. The probe converts it into an electrical pulse, which is amplified by the instrument and displayed on the fluorescent screen of the oscilloscope. The position and approximate size of the defect can be determined by comparing the position and amplitude of the defect reflection wave on the fluorescent screen with the amplitude of the reflection wave of the artificial defect in the reference test block. Existing ultrasonic non-destructive testing equipment has problems such as inconvenient probe movement and difficulty in detecting circumferential defects in pipelines.

[0003] In the related technology, a pipeline non-destructive flaw detection equipment is disclosed, which includes a support ring and multiple ultrasonic probes. The ultrasonic probes are installed in the support ring and elastically connected to the support ring. When the pipeline passes through the inner side of the support ring, the multiple ultrasonic probes elastically contact the pipeline. By manually moving the support ring, the probes can be moved along the length direction and circumferential direction of the pipeline. The equipment is easy to use, can accurately detect the pipeline, and avoids missed detection.

[0004] However, in actual application, since the distance between the components and the ground is too short, it is impossible to detect from the outside. Therefore, the present application invents a pipeline flaw detection device to solve the above technical problems. Summary of the invention

[0005] The embodiment of the present invention provides a pipeline flaw detection device, aiming to solve the technical problems in the above-mentioned prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a pipeline flaw detection device, including a fixed frame, a walking assembly and a flaw detection assembly, wherein the flaw detection assembly is arranged at the front end of the fixed frame, the walking assembly is arranged on the fixed frame, and the walking assembly is used to support the fixed frame to move in the pipeline; the flaw detection assembly includes:

[0007] A support seat, fixedly mounted on the front end of the fixing frame;

[0008] A plurality of detection mechanisms are arranged at intervals around the central axis of the support seat, and the detection mechanisms have the freedom to extend and retract along the radial direction of the support seat;

[0009] A buffer mechanism is arranged at the front end of the detection mechanism, the buffer mechanism comprises an elastic balloon and a high-pressure air pump, the high-pressure air pump is arranged on the fixing frame, and the elastic balloon is connected to the high-pressure air pump;

[0010] A control unit is connected to the detection mechanism and the high-pressure air pump signal.

[0011] In a possible implementation, the detection structure includes a telescopic rod, a telescopic airbag, a curved plate and an ultrasonic probe, the telescopic rod is a hollow rod-shaped object adjustable along the length direction, the curved plate is arranged at the top of the telescopic rod, the tail of the telescopic rod is connected to the support seat, and the telescopic airbag is inserted into the telescopic rod; the telescopic airbag is provided with a first valve, and the telescopic airbag is connected to the high-pressure air pump;

[0012] Wherein, the first valve, the ultrasonic probe and the control unit are signal-connected.

[0013] In a possible implementation, the fixing frame is provided with a first through hole, the first through hole runs through the front and rear ends of the fixing frame, and the support seat is slidably disposed in the first through hole along the central axis of the fixing frame.

[0014] In a possible implementation, the fixing frame is slidably connected to the supporting seat via a slide rail and slider assembly, and the slide rail and slider assembly includes:

[0015] A slide rail is fixedly arranged in the first through hole, and the slide rail is arranged in parallel along the central axis of the first through hole;

[0016] A slider is fixed on the support seat, and the slider is slidably connected to the slide rail;

[0017] The driving motor is arranged on the supporting seat, and the driving motor is used for driving the sliding block to slide along the length direction of the sliding rail.

[0018] In a possible implementation, the arc plate is further provided with a second through hole, the second through hole is an arc-shaped structure, and the second through hole is connected to the hollow inner cavity of the telescopic rod. A second airbag is also provided in the second through hole, and the second airbag is connected to the telescopic airbag.

[0019] In a possible implementation, the walking assembly includes a plurality of legs and a plurality of walking wheels. The plurality of legs are arranged on the fixing frame, and the central axis of the legs is arranged at an angle to the horizontal plane of the fixing frame; and the plurality of walking wheels are arranged on the legs.

[0020] In a possible implementation, the leg is rotatably connected to the fixed frame, and the leg includes a first bracket and a second bracket. The first bracket is rotatably connected to the fixed frame via a first rotating shaft, the second bracket is arranged on both sides of the first bracket, and one end of the second bracket is rotatably connected to the first bracket, and the other end of the second bracket is rotatably connected to the fixed frame; the walking wheel is arranged at the other end of the first bracket.

[0021] In a possible implementation, a telescopic hydraulic rod is further provided between two adjacent legs, the telescopic hydraulic rod has a telescopic freedom along the length direction and two ends of the telescopic hydraulic rod are respectively connected to the two legs.

[0022] In a possible implementation, a shock absorbing unit is provided between the walking wheel and the first bracket.

[0023] In a possible implementation manner, the shock absorbing unit includes a plurality of shock absorbing springs.

[0024] The beneficial effect of a pipeline flaw detection device provided by the present invention is that: compared with the prior art, the present invention provides a flaw detection component at the front end of the fixed frame, and the flaw detection component includes a support seat and a plurality of detection mechanisms with retractable lengths and a buffer mechanism. When the fixed frame is moved in the pipeline by the walking component, the high-pressure air pump is started, and the high-pressure air pump inflates the elastic balloon to avoid damage to the device by debris in the pipeline during the forward movement. When the fixed frame is brought to the designated flaw detection position, the high-pressure air pump pressurizes the elastic balloon and the inside of the pipeline for the second time, and at the same time, the control unit is started, and the control unit controls the detection mechanism to be lifted into the pipeline along the radial direction of the pipeline and completely fit with the inner wall of the pipeline. Finally, the detection mechanism detects the weld seal of the pipeline, thereby solving the technical problem in the prior art that the component cannot be detected from the outside due to the short distance from the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A partial structural diagram of a pipeline flaw detection device provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of a flaw detection assembly provided by an embodiment of the present invention;

[0027] Figure 3 A partial structural diagram of a pipeline flaw detection device provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 4 This is the axonometric structural diagram of the pipeline flaw detection device;

[0029] Figure 5 Cross-sectional view of the flaw detection component

[0030] Description of reference numerals:

[0031] 1. fixed frame; 11. first through hole; 12. slide rail;

[0032] 2. Traveling assembly; 21. First bracket; 22. Second bracket; 23. Traveling wheel;

[0033] 3. Flaw detection assembly; 31. Support seat; 32. Detection mechanism; 33. Buffer mechanism;

[0034] 321, telescopic rod; 322, arc-shaped plate; 323, second through hole. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0037] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0038] The directions or positional relationships indicated by terms such as “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0040] A pipeline flaw detection device provided by the present invention is now described.

[0041] A pipeline flaw detection device includes a fixed frame 1, a traveling assembly 2 and a flaw detection assembly 3. The flaw detection assembly 3 is arranged at the front end of the fixed frame 1, and the traveling assembly 2 is arranged on the fixed frame 1. The traveling assembly 2 is used to support the fixed frame 1 to move in the pipeline. The flaw detection assembly 3 includes a support seat 31, a plurality of detection mechanisms 32, a buffer mechanism 33 and a control unit. The support seat 31 is fixed at the front end of the fixed frame 1. A plurality of detection mechanisms 32 are arranged at intervals around the central axis of the support seat 31, and the detection mechanism 32 has the freedom to expand and contract along the radial direction of the support seat 31. The buffer mechanism 33 is arranged at the front end of the detection mechanism 32, and the buffer mechanism 33 includes an elastic balloon and a high-pressure air pump. The high-pressure air pump is arranged on the fixed frame 1, and the elastic balloon is connected to the high-pressure air pump. The control unit is connected to the detection mechanism 32 and the high-pressure air pump signal.

[0042] The beneficial effect of a pipeline flaw detection device provided by the present invention is that: compared with the prior art, the present invention provides a flaw detection component 3 at the front end of the fixed frame 1, and the flaw detection component 3 includes a support seat 31 and a plurality of retractable detection mechanisms 32 and a buffer mechanism 33. When the fixed frame 1 is moved in the pipeline by the walking component 2, the high-pressure air pump is started to inflate the elastic balloon to prevent the device from being damaged by debris in the pipeline during the forward movement.

[0043] When the fixing frame 1 is brought to the designated flaw detection position, the high-pressure air pump pressurizes the elastic balloon against the inside of the pipe for the second time, and at the same time, the control unit is started, which controls the detection mechanism 32 to be lifted into the inside of the pipe along the radial direction of the pipe and fits completely with the inner wall of the pipe. Finally, the detection mechanism 32 detects the weld seal of the pipe, thereby solving the technical problem in the prior art that the component cannot be detected from the outside due to being too short from the ground.

[0044] Furthermore, the detection structure includes a telescopic rod 321, a telescopic airbag, a curved plate 322 and an ultrasonic probe.

[0045] The telescopic rod 321 is a hollow rod-shaped object adjustable along the length direction, the arc plate 322 is arranged at the top of the telescopic rod 321, the tail of the telescopic rod 321 is connected to the support seat 31, and the telescopic airbag is inserted into the telescopic rod 321. The telescopic airbag is provided with a first valve, and the telescopic airbag is connected to the high-pressure air pump.

[0046] Wherein, the first valve, the ultrasonic probe and the control unit are signal connected.

[0047] Since the telescopic airbag is arranged in the hollow cavity inside the telescopic rod 321, the first valve is opened and the high-pressure air pump pressurizes and inflates the telescopic airbag, thereby driving the telescopic rod 321 to extend outward, and finally the arc plate 322 is fitted with the inner wall of the pipeline, and finally the ultrasonic probe is started to detect the weld of the pipeline. At the same time, the structural signal after ultrasonic testing is transmitted to the control unit, which can realize the detection of pipelines with different diameters, thereby enhancing the scope of use of the present application.

[0048] Specifically, the fixing frame 1 is provided with a first through hole 11 , which penetrates through the front and rear ends of the fixing frame 1 , and the support seat 31 is slidably disposed in the first through hole 11 along the central axis of the fixing frame 1 .

[0049] Furthermore, the fixing frame 1 and the supporting seat 31 are slidably connected via a slide rail 12 slider assembly.

[0050] The slide rail 12 slider assembly includes a slide rail 12, a slider and a drive motor. The slide rail 12 is fixed in the first through hole 11, and the slide rail 12 is arranged in parallel along the central axis of the first through hole 11. The slider is fixed on the support seat 31, and the slider is slidably connected to the slide rail 12. The drive motor is arranged on the support seat 31, and the drive motor is used to drive the slider to slide along the length direction of the slide rail 12.

[0051] The driving motor is started, and the driving motor drives the slider to slide back and forth along the length direction of the slide rail 12, thereby solving the technical problem that the fixing frame 1 cannot be moved to the corresponding pipeline weld position and cannot be detected due to the change in pipeline diameter.

[0052] Specifically, the arc plate 322 is further provided with a second through hole 323, which is an arc-shaped structure and is connected to the hollow inner cavity of the telescopic rod 321. A second airbag is further provided in the second through hole 323, and the second airbag is connected to the telescopic airbag. A second valve is provided on the second airbag, and the second valve is connected to the control unit signal.

[0053] After the second valve is opened, high-pressure gas enters the second airbag. Since the second airbag is arranged in the second through hole 323 of the arc plate 322, the second airbag expands after being filled with high-pressure gas, thereby driving the expansion and contraction of the arc plate 322, so as to solve the problem in the prior art that there is a gap between two adjacent arc plates 322 during the measurement process due to pipelines of different diameters, thereby avoiding the phenomenon of missed detection in the detection of pipeline welds.

[0054] On the basis of the above embodiment, the walking assembly 2 includes a plurality of legs and a plurality of walking wheels 23. The plurality of legs are arranged on the fixing frame 1, and the central axis of the legs is arranged at an angle with the horizontal plane of the fixing frame 1. The walking wheels 23 are arranged on the legs, and the walking wheels 23 are connected to the legs through universal wheels, and the angle between the walking wheels 23 and the legs can be adjusted according to different pipe diameters and different driving conditions.

[0055] Further, the leg is rotatably connected to the fixing frame 1, and the leg includes a first bracket 21 and a second bracket 22. The first bracket 21 is rotatably connected to the fixing frame 1 through a first rotating shaft, and the second bracket 22 is arranged on both sides of the first bracket 21, and one end of the second bracket 22 is rotatably connected to the first bracket 21, and the other end of the second bracket 22 is rotatably connected to the fixing frame 1. The walking wheel 23 is arranged at the other end of the first bracket 21.

[0056] Due to different pipe diameters, the distances between two adjacent legs need to be adjusted differently during the walking process of different pipe diameters. Therefore, the first bracket 21 and the second bracket 22 are rotated and adjusted with the fixing frame 1 respectively, and the second bracket 22 is also rotationally connected to the first bracket 21.

[0057] The first bracket 21 and the second bracket 22 are both rod-shaped objects that are retractable along the length direction.

[0058] Furthermore, a telescopic hydraulic rod is provided between each pair of adjacent legs. The telescopic hydraulic rod has a telescopic freedom along the length direction and both ends of the telescopic hydraulic rod are respectively connected to the two legs.

[0059] Start the telescopic hydraulic rod and adjust the different lengths of the telescopic hydraulic rod to adjust the different angles between the two legs to adapt to pipes of different diameters.

[0060] Furthermore, a shock absorbing unit is provided between the walking wheel 23 and the first bracket 21. The shock absorbing unit can improve the stability of walking in the pipeline.

[0061] On the basis of the above embodiment, the shock absorbing unit includes a plurality of shock absorbing springs.

[0062] Specifically, the high-pressure air pump has the dual functions of blowing and sucking, and has both vacuum and pressure relief functions.

[0063] 1. The gas passing through is water-free and oil-free, with the characteristics of low noise, high efficiency, maintenance-free and high performance. Power range. Air 0, 25~25KW flow rate 80m3 / h~2050m3 / h. Compression capacity 1000mmH2O~7000mmH2O. Vacuum adsorption capacity 1000mmH2O~4500mmH2O, special blade design, high pressure, large air volume, low noise and long life.

[0064] 2. The air volume control is highly stable and easy to operate.

[0065] 3. Complete range of styles. Strong insulation performance, easy installation, high reliability, high compression ratio, low bearing operating temperature, no oil and pollution, easy maintenance, and beautiful appearance.

[0066] 4. High pressure and high suction are generated by the unique design of the impeller. The edge of the impeller of the vortex air pump has multiple blades. When the impeller rotates, due to the centrifugal effect, the air in the two blades is quickly moved toward the outer edge, transferring energy, and the wind pressure is quickly superimposed, forming high pressure or high force, and its speed is increased. When the air is reintroduced into the impeller by the air duct, it will be accelerated again. Because multiple blades transfer energy, the wind pressure is quickly superimposed, forming high pressure or high suction.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline flaw detection device, characterized in that: The invention comprises a fixed frame (1), a walking assembly (2) and a flaw detection assembly (3), wherein the flaw detection assembly (3) is arranged at the front end of the fixed frame (1), the walking assembly (2) is arranged on the fixed frame (1), and the walking assembly (2) is used to support the fixed frame (1) to move in the pipeline; the flaw detection assembly (3) comprises: A support seat (31) is fixedly mounted on the front end of the fixing frame (1); A plurality of detection mechanisms (32) are arranged at intervals along the circumference of the central axis of the support seat (31), and the detection mechanisms (32) have the freedom to extend and retract along the radial direction of the support seat (31); A buffer mechanism (33) is arranged at the front end of the detection mechanism (32), the buffer mechanism (33) comprises an elastic balloon and a high-pressure air pump, the high-pressure air pump is arranged on the fixing frame (1), and the elastic balloon is connected to the high-pressure air pump; A control unit is connected to the detection mechanism (32) and the high-pressure air pump signal.

2. A pipeline flaw detection device as claimed in claim 1, characterized in that: The detection structure comprises a telescopic rod (321), a telescopic airbag, a curved plate (322) and an ultrasonic probe; the telescopic rod (321) is a hollow rod-shaped object adjustable along the length direction; the curved plate (322) is arranged at the top of the telescopic rod (321); the tail of the telescopic rod (321) is connected to the support seat (31); the telescopic airbag is inserted into the telescopic rod (321); the telescopic airbag is provided with a first valve, and the telescopic airbag is connected to the high-pressure air pump; Wherein, the first valve, the ultrasonic probe and the control unit are signal-connected.

3. A pipeline flaw detection device as claimed in claim 2, characterized in that: The fixing frame (1) is provided with a first through hole (11), the first through hole (11) passes through the front and rear ends of the fixing frame (1), and the support seat (31) is slidably arranged in the first through hole (11) along the central axis of the fixing frame (1).

4. A pipeline flaw detection device as claimed in claim 3, characterized in that: The fixing frame (1) and the supporting seat (31) are slidably connected via a slide rail (12) slider assembly, and the slide rail (12) slider assembly comprises: A slide rail (12) is fixedly arranged in the first through hole (11), and the slide rail (12) is arranged in parallel along the central axis of the first through hole (11); A sliding block is fixed on the support seat (31), and the sliding block is slidably connected to the slide rail (12); A drive motor is arranged on the support seat (31), and is used to drive the slide block to slide along the length direction of the slide rail (12).

5. A pipeline flaw detection device as claimed in claim 4, characterized in that: The arc plate (322) is further provided with a second through hole (323), the second through hole (323) is an arc-shaped structure, and the second through hole (323) is connected to the hollow inner cavity of the telescopic rod (321), and a second airbag is further provided in the second through hole (323), and the second airbag is connected to the telescopic airbag.

6. A pipeline flaw detection device as claimed in claim 5, characterized in that: The walking assembly (2) comprises: A plurality of legs are arranged on the fixing frame (1), wherein the central axis of the legs is arranged at an angle to the horizontal plane of the fixing frame (1); A plurality of running wheels (23) are arranged on the supporting legs.

7. A pipeline flaw detection device as claimed in claim 6, characterized in that: The supporting leg is rotatably connected to the fixing frame (1), and the supporting leg comprises a first bracket (21) and a second bracket (22); the first bracket (21) is rotatably connected to the fixing frame (1) via a first rotating shaft; the second bracket (22) is arranged on both sides of the first bracket (21), and one end of the second bracket (22) is rotatably connected to the first bracket (21), and the other end of the second bracket (22) is rotatably connected to the fixing frame (1); the walking wheel (23) is arranged at the other end of the first bracket (21).

8. A pipeline flaw detection device as claimed in claim 7, characterized in that: A telescopic hydraulic rod is also provided between two adjacent legs. The telescopic hydraulic rod has a telescopic freedom along the length direction and two ends of the telescopic hydraulic rod are respectively connected to the two legs.

9. A pipeline flaw detection device as claimed in claim 8, characterized in that: A shock absorbing unit is provided between the walking wheel (23) and the first bracket (21).

10. A pipeline flaw detection device as claimed in claim 9, characterized in that: The shock absorbing unit includes a plurality of shock absorbing springs.

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