Penetration flaw detection device and pipeline penetration flaw detection machine

Abstract

The utility model discloses a penetrant flaw detection device and a pipeline penetrant flaw detection machine, which comprise a spraying mechanism and three containers respectively used for containing a cleaning agent, a penetrant and a developer, and a conveying mechanism is connected between the three containers and the spraying mechanism. The conveying mechanism comprises a conveying header pipe communicated with the spraying mechanism and three conveying pipes connected to the conveying header pipe and communicated with the three containers respectively, a control valve is arranged on each conveying pipe correspondingly, and the spraying mechanism is used for spraying a penetrating agent, a cleaning agent and a developing agent on the surface of a to-be-detected part. Compared with the prior art, the device is simple in structure, small in occupied space and low in maintenance and management cost, the operation process of penetrant inspection is simplified, and the detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of penetration flaw detection, in particular to a penetration flaw detection device and a pipeline penetration flaw detection machine. Background Art

[0002] When there are defects on the surface of parts that are difficult to observe with the naked eye, such as fine cracks, penetrant testing is usually used for detection. Penetrant testing mainly goes through four steps: penetration, cleaning, development and observation. First, the penetrant is applied on the surface of the part. Under the capillary action, the penetrant penetrates into the surface opening defects due to the wetting and capillary action of the liquid. Then, the excess penetrant on the surface of the part is removed, and then the developer is applied to the surface of the part. The penetrant in the defect is re-adsorbed onto the surface of the part under the capillary action to form an enlarged defect image display, and finally the defect display is observed.

[0003] In the prior art, a penetrant flaw detector is generally used to detect defects on the surface of parts. For example, a utility model patent with a Chinese publication number of CN220063815U discloses a penetrant flaw detector, which includes a penetrant device, a roller conveyor, a washing and drying device and a flaw detector installed in sequence. The washing and drying device includes an inverted L-shaped side plate, a mesh belt conveyor, a drain pipe, a water pump, a hot air blower, a small electric push rod, a vertical rod, a horizontal rod, a connecting rod, a hollow ring, a hollow circular plate and an atomizing nozzle. After the pipe is processed by the penetrant device, it is placed on a roller conveyor to make the surface redundant. The fluorescent liquid droplets are recovered, and then the pipes are evenly spaced and placed vertically on a mesh belt conveyor, which are moved to the bottom of multiple small electric push rods in turn. The small electric push rods can be extended and retracted to make the hollow ring and hollow circular plate connected to the water pump and the hot air blower move up and down, respectively flushing and drying the inner and outer walls of the pipes to remove excess fluorescent liquid. The cleaning effect is good, and the accuracy of subsequent detection is improved. However, it needs to be implemented by a penetration device, a flushing and drying device, and a flaw detection device to respectively implement the three steps of penetration, cleaning, and imaging. Not only is the operation complicated and the detection efficiency low, but it also occupies a large space and has a high subsequent maintenance cost. Utility Model Content

[0004] The utility model aims to provide a penetrant flaw detection device to solve the problems of complex operation and low detection efficiency when the penetrant flaw detection machine in the prior art detects defects on the surface of parts.

[0005] The utility model is realized through the following technical solutions.

[0006] A penetrant flaw detection device comprises a spraying mechanism and three containers for respectively containing a cleaning agent, a penetrant and a developer. A conveying mechanism is connected between the three containers and the spraying mechanism. The conveying mechanism comprises a conveying main pipe connected to the spraying mechanism and three conveying pipes connected to the conveying main pipe and respectively connected to the three containers. A control valve is provided on each of the conveying pipes. The spraying mechanism is used to spray the penetrant, cleaning agent and developer onto the surface of a part to be inspected.

[0007] As a further improvement of the utility model, a driving component providing power for the delivery of the penetrant, cleaning agent and developer is provided between the delivery main pipe and the spraying mechanism, one end of the driving component is connected to the delivery main pipe, and the other end is connected to the spraying mechanism.

[0008] As a further improvement of the present invention, a timing control component is provided on each of the delivery pipes, and the timing control component can control the opening or closing of the delivery pipe according to a preset time.

[0009] The utility model also provides a pipeline penetrant flaw detector, comprising a penetrant flaw detector, a detection box and a conveying mechanism described in the above technical scheme, wherein the detection box has a storage space for accommodating a pipeline to be tested, the spraying mechanism is installed on the detection box and connected to the storage space, the pipeline to be tested is located on the conveying mechanism, a through hole for the pipeline to be tested to enter is opened on the detection box, and the conveying mechanism is used to drive the pipeline to be tested to move into or out of the detection box.

[0010] As a further improvement of the present invention, the spraying mechanism is installed on the top of the detection box, and the top of the detection box is provided with a conveying hole for connecting the spraying mechanism and the accommodating space.

[0011] As a further improvement of the utility model, a discharge port for discharging the penetrant, cleaning agent and penetrant is provided at the bottom end of the detection box, and a collection box is provided below the discharge port.

[0012] As a further improvement of the present invention, the transmission mechanism includes a plurality of transmission components spaced apart along the axial direction of the pipeline to be tested, the transmission component includes a first mounting seat, a transmission member and a first driving member, the transmission member is arranged on the first mounting seat, the transmission member has an inwardly concave arc surface matching the outer surface of the pipeline to be tested, and the first driving member is used to drive the transmission member to rotate to drive the pipeline to be tested to move.

[0013] As a further improvement of the present invention, the transmission mechanism further includes a rotating assembly for controlling the pipeline to be tested to rotate along its axial direction.

[0014] As a further improvement of the utility model, the rotating assembly includes a second mounting seat and two parallel and spaced rollers arranged on the second mounting seat, the rollers are parallel to the pipeline to be tested, one of the two rollers is connected to a second driving member, and the second driving member is used to drive the roller to rotate to drive the pipeline to be tested to rotate.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a penetrant flaw detection device, which can realize the three steps of penetration, cleaning and imaging in the same device, simplifies the operation process of penetrant flaw detection, and helps to improve detection efficiency. Compared with the prior art, the device has a simple structure, occupies less space, and has low maintenance and management costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a detailed description of the preferred implementation examples of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0018] Figure 1 This is a structural schematic diagram of a pipeline penetration flaw detector according to the utility model;

[0019] Figure 2 for Figure 1 The structural diagram of part A in the figure;

[0020] Figure 3 This is a structural diagram of the connection between the drive assembly and the conveying device in the utility model;

[0021] Figure 4 It is a cross-sectional view of the spraying mechanism in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the transmission component in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the rotating assembly in the utility model;

[0024] In the figure:

[0025] 1. Spraying mechanism; 2. Container; 3. Conveying mechanism; 4. Control valve; 5. Driving assembly; 6. Timing control assembly; 7. Detection box; 7a. Through hole; 8. Conveying assembly; 8a. Conveying member; 8b. First driving member; 8c. First mounting seat; 9. Pipeline to be tested; 10. Collection box; 11. Rotating assembly; 11a. Roller; 11b. Second driving member; 11c. Second mounting seat. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0027] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0028] Embodiment 1:

[0029] This embodiment provides a penetrant flaw detection device, referring to Figures 1 to 3 , including a spraying mechanism 1 and three containers 2 for containing cleaning agent, penetrant and developer respectively. A conveying mechanism 3 is connected between the three containers 2 and the spraying mechanism 1. The conveying mechanism 3 is used to convey the cleaning agent, penetrant and developer contained in the three containers 2 to the spraying mechanism 1. Then, according to the steps of penetrant flaw detection, the spraying mechanism 1 sprays the penetrant, cleaning agent and developer on the surface of the part to be tested in turn, so as to detect defects on the surface of the part to be tested.

[0030] Specifically, the conveying mechanism 3 includes a conveying main pipe 3a and three conveying pipes 3b connected to the conveying main pipe 3a. The conveying main pipe 3a is connected to the spraying mechanism 1, and the three conveying pipes 3b are respectively connected to the three containers 2. At the same time, each conveying pipe 3b is provided with a control valve 4, and the control valve 4 can control the size of the liquid flow through the conveying pipe 3b, that is, the conveying mechanism 3 can realize the individual control of the reagent transmission in a container 2. When used specifically, the conveying mechanism 3 can sequentially transmit the penetrant, cleaning agent and developer to the spraying mechanism 1 according to the detection steps of the penetrant flaw detection, and then the spraying mechanism 1 sequentially sprays the penetrant, cleaning agent and developer onto the surface of the part to be detected, thereby realizing the detection of the part to be detected. The defects on the surface of the workpiece are detected. Compared with the penetrant flaw detector disclosed in the utility model patent with Chinese publication number CN220063815U, which requires a penetrant device, a rinsing and drying device and a flaw detection device to respectively implement the three steps of penetration, cleaning and imaging, the present device simplifies the operation process by spraying penetrant, cleaning agent and developer through a spraying mechanism 1, making the penetrant flaw detection operation simpler and more intuitive, reducing the complexity of operation, and helping to improve the detection efficiency. At the same time, compared with the prior art, the number of equipment required in the present device is less, which not only saves space but also helps to reduce the maintenance and management costs of the equipment.

[0031] Furthermore, a driving component 5 is provided between the delivery main pipe 3a and the spraying mechanism 1. One end of the driving component 5 is connected to the delivery main pipe 3a, and the other end is connected to the spraying mechanism 1. The driving component 5 can provide power for the delivery of the penetrant, cleaning agent and developer, ensuring the stable delivery of the penetrant, cleaning agent and developer during the penetration testing process, which helps to improve the detection efficiency. In the present embodiment, the driving component 5 is preferably an isolation pump or a diaphragm pump.

[0032] In this embodiment, each delivery tube 3b is provided with a timing control component 6, and the timing control component 6 can control the opening or closing of the delivery tube 3b according to the preset time. Since it takes a certain amount of time for the penetrant to penetrate into the defects on the surface of the part to be tested and for the penetrant to be adsorbed onto the surface of the part to be tested under the action of the developer, arranging the timing control component 6 on the delivery tube 3b can accurately control the delivery of the penetrant and the developer within a specific time period without manual intervention, thereby realizing automatic control of the delivery of the penetrant, cleaning agent and developer at the set time, which helps to improve the detection efficiency and detection accuracy.

[0033] In this embodiment, refer to Figure 4 The spraying mechanism 1 is provided with a delivery channel 1a connected to the delivery main pipe 3a. The delivery channel 1a has a nozzle 1b. The cleaning agent, penetrant and developer transmitted from the delivery mechanism 3 to the spraying mechanism 1 are sprayed onto the surface of the part to be tested through the nozzle 1b. The operation is simple and the implementation is convenient.

[0034] Embodiment 2:

[0035] The present embodiment provides a pipeline penetrant flaw detector, comprising a penetrant flaw detector device in the above technical solution, a detection box 7 and a conveying mechanism, the detection box 7 has a storage space for accommodating a pipeline 9 to be tested, the spraying mechanism 1 is installed on the detection box 7 and connected to the storage space, the pipeline 9 to be tested is located on the conveying mechanism, and a through hole 7a for the pipeline 9 to be tested to enter is opened on the detection box 7, and the size of the through hole 7a matches the diameter of the pipeline 9 to be tested. The conveying mechanism is used to drive the pipeline 9 to be tested to move into or out of the detection box 7, so as to facilitate the detection of defects on the surface of the pipeline to be tested.

[0036] Furthermore, the spraying mechanism 1 is installed on the top of the detection box 7, and a delivery hole for connecting to the spraying mechanism 1 is opened on the top of the detection box 7. Through the delivery hole set on the top of the detection box 7, the spraying mechanism 1 can spray the penetrant, cleaning agent and developer from top to bottom onto the surface of the pipeline 9 to be tested in the detection box 7, which helps to increase the spraying area and reduce material waste.

[0037] Since the penetrant, cleaning agent and developer all contain chemical substances, in order to prevent the used penetrant, cleaning agent and developer from polluting the environment, a discharge port for discharging the three reagents is opened at the bottom of the detection box 7, and a collection box 10 is provided below the discharge port to facilitate subsequent targeted treatment of the used penetrant, cleaning agent and developer.

[0038] In this embodiment, refer to Figure 5 The transmission mechanism includes a plurality of transmission components 8 spaced apart along the axial direction of the pipeline 9 to be tested, and the transmission component includes a first mounting seat 8c, a transmission member 8a and a first driving member 8b. The transmission member 8a is mounted on the first mounting seat 8c. The transmission member 8a has an inwardly concave arc surface matching the outer surface of the pipeline 9 to be tested. The pipeline 9 to be tested is placed on the transmission member 8a. The first driving member 8b can drive the transmission member 8a to rotate. Under the action of friction force, the rotation of the transmission member 8a can drive the pipeline 9 to be tested to move, thereby allowing the pipeline 9 to be tested to enter or move out of the detection box 7.

[0039] In this embodiment, at least one rotating component 11 is further included for driving the pipe to be tested 9 to rotate along its axial direction. When the pipe to be tested 9 rotates, on the one hand, the spraying mechanism 1 can spray the penetrant, cleaning agent and developer on the surface of the pipe to be tested 9 more evenly, which helps to avoid the situation where the coating is too thick or too thin, thereby improving the accuracy of the detection. On the other hand, the rotating pipe to be tested 9 allows the reagents sprayed by the spraying mechanism 1 to cover the outer surface of the pipe to be tested 9 more quickly. Compared with the static pipe to be tested 9, the rotating pipe to be tested 9 can reduce the time required for spraying the three reagents, which helps to improve the spraying efficiency, thereby improving the detection efficiency of the surface defects of the pipe to be tested 9.

[0040] Further, see Figure 6 The rotating assembly 11 includes a second mounting seat 11c and two cylindrical rollers 11a arranged in parallel and spaced apart on the second mounting seat 11c. The two rollers 11a are arranged in parallel with the pipeline 9 to be tested, and the pipeline 9 to be tested is placed on the two rollers 11a. At the same time, one of the two rollers 11a is rotatably connected to a second driving member 11b, that is, the second driving member 11b can drive the roller 11a to rotate, and the rotation of the roller 11a can drive the pipeline 9 to be tested to rotate.

[0041] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A penetrant flaw detection device, characterized in that: The invention comprises a spraying mechanism (1) and three containers (2) for respectively containing a cleaning agent, a penetrant and a developer. A conveying mechanism (3) is provided between the three containers (2) and the spraying mechanism (1). The conveying mechanism (3) comprises a conveying main pipe (3a) connected to the spraying mechanism (1) and three conveying pipes (3b) connected to the conveying main pipe (3a) and respectively connected to the three containers (2). A control valve (4) is provided on each of the conveying pipes (3b). The spraying mechanism (1) is used to spray the penetrant, cleaning agent and developer onto the surface of the part to be inspected.

2. A penetrant flaw detection device according to claim 1, characterized in that: A driving assembly (5) for providing power for the delivery of the penetrant, cleaning agent and developer is provided between the delivery main pipe (3a) and the spraying mechanism (1); one end of the driving assembly (5) is connected to the delivery main pipe (3a), and the other end is connected to the spraying mechanism (1).

3. A penetrant flaw detection device according to claim 1, characterized in that: A timing control component (6) is provided on each of the delivery pipes (3b), and the timing control component (6) can open or close the delivery pipe (3b) according to a preset time.

4. A penetrant flaw detection device according to claim 1, characterized in that: The spraying mechanism (1) is provided with a delivery channel (1a) connected to the delivery main pipe (3a), and the delivery channel (1a) has a nozzle (1b).

5. A pipeline penetrant flaw detector, characterized in that: The invention comprises a penetrant flaw detection device as claimed in any one of claims 1 to 4, a detection box (7) and a conveying mechanism for conveying a pipeline to be tested (9), wherein the detection box (7) is provided with a storage space for accommodating the pipeline to be tested (9), the spraying mechanism (1) is mounted on the detection box (7) and connected to the storage space, and the detection box (7) is provided with a through hole (7a) for the pipeline to be tested (9) to penetrate, so that the pipeline to be tested (9) can enter or move out of the detection box (7) under the drive of the conveying mechanism.

6. A pipeline penetrant flaw detector according to claim 5, characterized in that: The spraying mechanism (1) is arranged at the top end of the detection box (7), and a conveying hole for connecting the spraying mechanism (1) and the accommodating space is provided at the top end of the detection box (7).

7. A pipeline penetrant flaw detector according to claim 5, characterized in that: The bottom end of the detection box (7) is provided with a discharge port for discharging the penetrant, cleaning agent and penetrant, and a collection box (10) is provided below the discharge port.

8. A pipeline penetrant flaw detector according to claim 5, characterized in that: The conveying mechanism comprises a plurality of conveying assemblies (8) arranged at intervals along the axial direction of the pipeline (9) to be tested, the conveying assembly (8) comprising a first mounting seat (8c), a conveying member (8a) and a first driving member (8b), the conveying member (8a) being rotatably arranged on the first mounting seat (8c), the conveying member (8a) having an inwardly concave arc surface matching the outer surface of the pipeline (9) to be tested, and the first driving member (8b) being used to drive the conveying member (8a) to rotate so as to drive the pipeline (9) to be tested to move along its axial direction so as to enter or move out of the detection box (7).

9. A pipeline penetrant flaw detector according to any one of claims 5 to 8, characterized in that: It also includes at least one rotating assembly (11) for driving the pipeline to be tested (9) to rotate along its axial direction.

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