Automatic flaw detection device capable of reducing probe misinformation

Abstract

The utility model relates to the technical field of ultrasonic flaw detection, in particular to an automatic flaw detection device capable of reducing probe misinformation. The device comprises a flaw detector, the flaw detector is connected with a probe, a movable shell is installed at the front end of the probe, a protective film is arranged at the position, located at the front end of the probe, in the movable shell, a plurality of micropores are formed in the protective film, a quick connector used for being connected with a water pump is arranged on the movable shell, a plurality of water passing grooves are formed in the movable shell, and the water passing grooves are connected to the position where the protective film is located. The protective film is additionally arranged at the front end of the probe, the probe and a detected object are isolated through the protective film, the probe is prevented from being damaged by oxides or unevenness on the surface of the object in the detection process, the probe false alarm phenomenon caused by rust and the like is prevented, and meanwhile the coupling effect of water and propagation of sound waves are not affected; by means of the design of the movable shell and the bottom cover, the protective film can be clamped and prevented from sliding during installation, and meanwhile the water passing groove and the pressure dividing cavity are arranged inside, so that the uniformity of water flow reaching the protective film is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic flaw detection technical field, concretely relates to a kind of automatic flaw detection device for reducing probe false alarm. BACKGROUND

[0002] The automatic flaw detection technology using ultrasonic waves is commonly used in the detection of metals, welded joints, pipelines and other structural components, however, during the flaw detection process, even if water is used as coupling, false alarms can still occur due to rust on the surface of the object. Such false alarms not only waste a lot of detection resources, but also can interfere with subsequent maintenance work, reducing overall production efficiency. SUMMARY

[0003] The utility model aims at the defects and deficiencies of prior art, provide a kind of automatic flaw detection device for reducing probe false alarm, it can solve the above-mentioned defects.

[0004] To achieve the above object, the utility model adopts the following technical scheme: it contains flaw detector, and the flaw detector is connected with probe, and the probe front end is equipped with movable shell, and the movable shell is equipped with protective film at probe front end, and the protective film is equipped with a plurality of micropores, and the movable shell is equipped with quick connector for connecting water pump, and the movable shell is equipped with a plurality of water channels, and the water channels are connected to the position of protective film.

[0005] Preferably, the movable shell is provided with a through hole for the probe to pass through, and a bottom cover is connected below the movable shell, and the bottom cover is provided with a film mounting groove matched with the shape of the protective film, and the film is arranged in the film mounting groove.

[0006] Preferably, the movable shell is provided with a plurality of manual limiting elastic clamping members on both sides, and a limiting groove is opened on the side of the bottom cover, and the head of the limiting elastic clamping member is inserted into the limiting groove.

[0007] Preferably, a pressure dividing cavity is opened in the movable shell, and the quick connector is connected to the pressure dividing cavity, and the plurality of water channels are connected in the pressure dividing cavity.

[0008] Preferably, a plurality of clamping joints are arranged on the periphery of the probe front end, and a plurality of "L"-shaped clamping grooves matched with the clamping joints are opened in the through hole of the movable shell, and the clamping joints are clamped in the clamping grooves.

[0009] After adopting the above structure, the utility model has the beneficial effects that:

[0010] 1. The utility model adds protective film at the front end of the probe, which isolates the probe from the measured object, prevents the damage of the probe caused by the oxides or concaves and convexes on the surface of the object during the detection process, prevents the false alarm of the probe caused by rust, and does not affect the coupling effect of water and the propagation of sound waves.

[0011] 2. The utility model discloses a movable casing and the design of bottom cover, can clamp the protective film when installation, prevent its slide, simultaneously built-in water channel and partial pressure chamber, guarantee the uniformity of water flow to reach the protective film. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of the utility model, and it is the whole structure schematic diagram of the utility model;

[0013] Figure 2 It is the installation mode schematic diagram of probe and movable casing in the utility model;

[0014] Figure 3 It is the installation mode schematic diagram of protective film in the utility model;

[0015] Figure 4 It is the internal structure longitudinal section view of movable casing in the utility model;

[0016] Figure 5 It is the transverse section view of movable casing in the utility model.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 1, flaw detector;2, probe;3, movable casing;4, clamping groove;5, clamping joint;6, limit elastic clamping piece;7, bottom cover;8, limit slot;9, film installation groove;10, protective film;11, water channel;12, partial pressure chamber;13, quick connector. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0020] Referring to Figures 1-5 As shown in the figure, it comprises flaw detector 1 and probe 2, probe 2 is connected with flaw detector 1 through cable, and the front end of probe 2 is provided with movable casing 3, movable casing 3 is provided with a layer of protective film 10, a plurality of micropores are formed in protective film 10, allowing liquid to pass through while protecting probe 2;Movable casing 3 is provided with a quick connector 13 for quickly connecting the water pump of liquid supply, and a plurality of water channels 11 are further arranged in the casing, which are connected to the positions of protective film 10 respectively, to ensure uniform distribution of liquid, and protective film 10 preferably adopts polytetrafluoroethylene with corrosion resistance and low friction coefficient, the diameter of micropore is selected as 50-100 μm, and the density is 200-400 holes / cm 2The specific size and density can be confirmed after experiment according to the working requirement;

[0021] A through hole is arranged in the movable shell 3, the probe 2 passes through the through hole and penetrates the movable shell 3, a bottom cover 7 is connected below the movable shell 3, a film mounting groove 9 matched with the shape of the protective film 10 is arranged in the bottom cover 7, the protective film 10 can be clamped into the groove, a plurality of manual limiting elastic clamping pieces 6 are arranged on the two sides of the movable shell 3, a limiting groove 8 is arranged on the side of the bottom cover 7, the head of the clamping piece is inserted into the limiting groove 8, and the connection between the movable shell 3 and the bottom cover 7 is ensured to be firm.

[0022] A pressure distribution cavity 12 is further arranged in the movable shell 3, a quick connector 13 is connected to the pressure distribution cavity 12, a plurality of water passing grooves 11 are connected in the pressure distribution cavity 12, through the design of the pressure distribution cavity 12, liquid can be uniformly distributed to each water passing groove 11, and pressure is balanced, a plurality of clamping heads 5 are arranged on the front end of the probe 2 along the circumferential side, a plurality of L-shaped clamping grooves 4 matched with the clamping heads 5 are arranged in the through hole of the movable shell 3, the clamping heads 5 are clamped in the clamping grooves 4, and the connection between the probe 2 and the shell is ensured to be stable and easy to install and disassemble.

[0023] The use process of the utility model is as follows:

[0024] When the clamping head 5 of the probe 2 is aligned and inserted into the clamping groove 4, and the probe 2 is rotated, the movable shell 3 is installed on the probe 2; in this process, the protective film 10 is attached to the front end of the probe 2 by downward extrusion of the probe 2, when in use, the water pipe connected with the water pump is connected to the quick connector 13, and the probe 2 can be used;

[0025] After the probe 2 is attached to the surface of the measured object, the protective film 10 is attached to the surface of the object, meanwhile, the water pump sends water into the water passing groove 11, and the water flows out from the protective film 10, at this time, the water acts as a coupling agent, the sound wave is not disturbed, the protective film 10 separates the probe 2 from the surface of the object, the probe 2 is prevented from being damaged by oxides or uneven surfaces, the probe 2 is prevented from false reporting due to rust marks, and meanwhile, the water seeping out from the protective film 10 also carries out the dust or impurities clamped in the hole of the protective film 10, and the protective film 10 is prevented from being blocked.

[0026] After being used for a period of time, the protective film 10 is worn or aged, and can be replaced, after the limiting elastic clamping piece 6 is pressed, the bottom cover 7 and the protective film 10 are taken down, a new protective film 10 is replaced, after the protective film 10 is installed, the protective film 10 is clamped in the film mounting groove 9, after installation, the bottom cover 7 and the movable shell 3 clamp the protective film 10, and the protective film 10 is prevented from sliding.

[0027] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. An automatic flaw detection device for reducing false alarms of probes, comprising a flaw detector (1), characterized in that: The flaw detector (1) is connected to a probe (2). A movable housing (3) is installed at the front end of the probe (2). A protective film (10) is provided inside the movable housing (3) at the front end of the probe (2). Several micro-holes are opened on the protective film (10). A quick connector (13) for connecting a water pump is provided on the movable housing (3). Several water passage grooves (11) are provided inside the movable housing (3). The water passage grooves (11) are respectively connected to the position of the protective film (10).

2. The automatic flaw detection device for reducing probe false alarms according to claim 1, characterized in that: The movable housing (3) has a through hole for the probe (2) to pass through. A bottom cover (7) is connected to the bottom of the movable housing (3). A membrane mounting groove (9) matching the shape of the protective film (10) is opened in the bottom cover (7). The film is placed in the membrane mounting groove (9).

3. The automatic flaw detection device for reducing probe false alarms according to claim 2, characterized in that: The movable housing (3) has multiple manual limiting elastic snap fasteners (6) on both sides, and the bottom cover (7) has a limiting groove (8) on the side. The heads of the limiting elastic snap fasteners (6) are all inserted into the limiting groove (8).

4. The automatic flaw detection device for reducing probe false alarms according to claim 1, characterized in that: The movable housing (3) has a pressure-dividing chamber (12) inside, the quick connector (13) is connected to the pressure-dividing chamber (12), and multiple water passages (11) are connected to the pressure-dividing chamber (12).

5. An automatic flaw detection device for reducing false alarms by probes according to claim 1, characterized in that: The probe (2) has several snap-fit ​​connectors (5) along its circumference at the front end. The movable housing (3) has several "L"-shaped slots (4) that match the snap-fit ​​connectors (5) in its through hole. The snap-fit ​​connectors (5) are snapped into the slots (4).

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