Sensor for detecting weld crack defect of instrument pipeline butt joint

Abstract

The utility model relates to the technical field of sensors, in particular to a sensor for detecting weld crack defects of an instrument pipeline butt joint, which comprises a housing, a handle fixedly connected to the outer side of the upper end of the housing, an inner cavity arranged in the lower end of the housing, and a flaw detection sensor and a moving mechanism arranged in the inner cavity. The flaw detection device has the beneficial effects that the flaw detection sensor can be fixedly connected in the inner cavity of the housing by arranging the housing, so that the protective effect on the flaw detection sensor is improved, the handheld operation convenience can be improved, a plurality of flaw detection sensors can be fixed in the housing, multi-point detection is realized, and the detection efficiency is improved. The housing is arc-shaped, so that the housing can be attached to the surface of a pipeline weld joint, the working efficiency is improved, and the detection data accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a sensor for detecting weld crack defects of a butt joint of an instrument pipeline. Background Art

[0002] In the prior art, a crack detector is used to detect crack defects in the welds of pipeline butt joints. Generally, the crack detector is handheld and can quickly and conveniently detect crack defects in the welds of pipelines. However, the flaw detection sensor part of the crack detector in the prior art is generally handheld and attached to the outside of the weld, which is easily affected by the operator's actions during operation, and may have problems such as loose fitting and angle deviation, resulting in the detection structure being not detailed and accurate enough. Moreover, it is not convenient to operate a flaw detection sensor alone, which affects work efficiency. For this reason, the utility model proposes a sensor for detecting crack defects in the welds of instrument pipeline butt joints to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a sensor for detecting weld crack defects of instrument pipeline butt joints, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a sensor for detecting weld crack defects of instrument pipeline butt joints, comprising:

[0005] The cover shell has a handle fixedly connected to the outer side of the upper end of the cover shell, and the lower end of the cover shell is internally provided with an inner cavity, in which a flaw detection sensor and a moving mechanism are arranged.

[0006] Preferably, the cover shell is arc-shaped, and includes a top plate and side walls, wherein the side walls are provided with a plurality of straight slots evenly distributed in a circular array, and a buffer pad is fixedly connected to the top of the inner cavity inside the cover shell, and the buffer pad is made of latex, and the upper end of the buffer pad is fixed to the top of the inner cavity by gluing.

[0007] Preferably, the moving mechanism comprises support members arranged on both sides of the inner cavity close to the side walls, and the support members are arranged in a plurality of groups corresponding to the straight slots opened on the side walls of the housing.

[0008] Preferably, the support member includes a main body fixing block, which is in a square shape, and the upper end of the fixing block is fixedly connected to a damping strut, and the upper end of the damping strut is fixedly connected to the top of the inner cavity, and the side of the fixing block close to the side wall of the cover shell is fixedly connected to a rotating shaft, and a roller is rotatably connected to the outer side of the rotating shaft, and the lower end of the roller protrudes out of the lower end opening of the inner cavity and is connected to the outside, the rotating shaft passes through the roller and through the straight slot on the side wall to be connected to the outside, and a fastening nut is threadedly connected to the outer side of the end.

[0009] Preferably, inside the inner cavity, a flaw detection sensor is fixedly connected in the space between the two groups of support members, and the two sides of the flaw detection sensor are clamped and fixed by clamping plates. Positioning grooves are provided on both sides of the flaw detection sensor, and positioning blocks corresponding to the positioning grooves are protruding from the inner side of the clamping plate. The positioning blocks are inserted in the positioning grooves to limit the position of the flaw detection sensor.

[0010] Preferably, a feed screw is rotatably connected to the middle of the outer side of the clamping plate, and the feed screw passes through the side wall of the cover shell and is connected to the outside. A threaded hole corresponding to the feed screw is opened on the cover shell, and the feed screw is threadedly connected in the threaded hole. A knob is provided at the outer end of the feed screw.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can fix the flaw detection sensor in the inner cavity of the cover shell by setting the cover shell, while increasing the protection effect of the flaw detection sensor, it can also improve the convenience of handheld operation, and multiple flaw detection sensors can be fixed in the cover shell to realize multi-point detection. The arc-shaped cover shell is more conducive to fitting on the surface of the pipeline weld, thereby increasing work efficiency and improving the accuracy of detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0016] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0017] In the figure: 1 cover, 2 handle, 3 inner cavity, 4 buffer pad, 5 support, 6 roller, 7 feed screw, 8 knob, 9 clamping plate, 10 flaw detection sensor, 11 fixing block, 12 damping support rod, 13 rotating shaft, 14 fastening nut. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a sensor for detecting weld crack defects of instrument pipeline butt joints, comprising

[0023] A cover shell 1, a handle 2 is fixedly connected to the outer side of the upper end of the cover shell 1, and an inner cavity 3 is provided inside the lower end of the cover shell 1, and a flaw detection sensor 10 and a moving mechanism are arranged in the inner cavity 3;

[0024] The cover 1 is arc-shaped, and includes a top plate and a side wall, wherein the side wall is provided with a plurality of straight notches evenly distributed in a circular array, and a buffer pad 4 is fixedly connected to the top of the inner cavity 3 inside the cover 1, and the buffer pad 4 is made of latex, and the upper end of the buffer pad 4 is fixed to the top of the inner cavity 3 by gluing, and the arc-shaped cover 1 can be easily fitted to the pipeline weld, making the detection operation more convenient and quick, and the setting of the buffer pad 4 can increase the buffering and shock-absorbing effect, in order to protect the flaw detection sensor 10 from vibration, collision or fall damage, and improve the protection;

[0025] The moving mechanism includes support members 5 arranged on both sides of the inner cavity 3 near the side walls, and a plurality of groups of support members 5 are arranged corresponding to the straight slots opened on the side walls of the housing 1;

[0026] The support member 5 includes a main body fixing block 11, which is in a square shape. A damping support rod 12 is fixedly connected to the upper end of the fixing block 11. The upper end of the damping support rod 12 is fixedly connected to the top of the inner cavity 3. A rotating shaft 13 is fixedly connected to the side of the fixing block 11 close to the side wall of the cover shell 1. A roller 6 is rotatably connected to the outer side of the rotating shaft 13. The lower end of the roller 6 protrudes out of the lower end opening of the inner cavity 3 and is connected to the outside. The rotating shaft 13 passes through the roller 6 and passes through the straight groove on the side wall to be connected to the outside, and a fastening nut 14 is threadedly connected to the outer side of the end. The roller 6 can be supported by the support member 5 to provide elastic buffering performance. When the roller 6 is under pressure, it can retract into the inner cavity 3, so that the lower end of the cover shell 1 fits the surface of the pipeline weld, which is convenient for the flaw detection sensor 10 to fit the pipeline and improve the flaw detection accuracy. When the pressure disappears, it rebounds and pops the roller 6 out of the inner cavity, which is convenient for the device to move on the pipeline, increases the convenience of operation, and improves the flaw detection work efficiency.

[0027] Inside the inner cavity 3, a flaw detection sensor 10 is fixedly connected in the space between the two sets of support members 5. Both sides of the flaw detection sensor 10 are clamped and fixed by the clamping plates 9. Positioning grooves are provided on both sides of the flaw detection sensor 10. Positioning blocks corresponding to the positioning grooves are protruding from the inner side of the clamping plates 9. The positioning blocks are inserted into the positioning grooves to limit the position of the flaw detection sensor 10.

[0028] A feed screw 7 is rotatably connected to the middle of the outer side of the clamping plate 9. The feed screw 7 passes through the side wall of the cover shell 1 and is connected to the outer side. A threaded hole corresponding to the feed screw 7 is opened on the cover shell 1. The feed screw 7 is threadedly connected in the threaded hole. A knob 8 is provided at the outer end of the feed screw 7. By fixing multiple flaw detection sensors 10 in the cover shell 1, multi-point detection is achieved, work efficiency is increased, and the accuracy of detection data is improved.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensor for detecting crack defects in weld seams of butt joints of instrument pipelines, characterized in that: include A cover shell (1), wherein a handle (2) is fixedly connected to the outer side of the upper end of the cover shell (1), and an inner cavity (3) is provided inside the lower end of the cover shell (1), wherein a flaw detection sensor (10) and a moving mechanism are arranged in the inner cavity (3); The cover shell (1) is arc-shaped, and comprises a top plate and a side wall, wherein the side wall is provided with a plurality of straight slots evenly distributed in a circular array, and a buffer pad (4) is fixedly connected to the top of the inner cavity (3) inside the cover shell (1), wherein the buffer pad (4) is made of latex, and the upper end of the buffer pad (4) is fixed to the top of the inner cavity (3) by gluing; The moving mechanism comprises support members (5) arranged at both sides of the inner cavity (3) close to the side walls, and a plurality of groups of the support members (5) are arranged corresponding to the straight slots opened on the side walls of the cover shell (1).

2. A sensor for detecting weld crack defects of instrument pipeline butt joints according to claim 1, characterized in that: The support member (5) comprises a main body fixing block (11), the fixing block (11) is in a square shape, the upper end of the fixing block (11) is fixedly connected to a damping support rod (12), the upper end of the damping support rod (12) is fixedly connected to the top of the inner cavity (3), the side of the fixing block (11) close to the side wall of the cover shell (1) is fixedly connected to a rotating shaft (13), the outer side of the rotating shaft (13) is rotatably connected to a roller (6), the lower end of the roller (6) protrudes from the lower end opening of the inner cavity (3) and is connected to the outside, the rotating shaft (13) passes through the roller (6) and passes through the straight slot on the side wall to be connected to the outside, and a fastening nut (14) is threadedly connected to the outer side of the end.

3. A sensor for detecting weld crack defects of instrument pipeline butt joints according to claim 1, characterized in that: Inside the inner cavity (3), a flaw detection sensor (10) is fixedly connected in the space between the two groups of support members (5). Both sides of the flaw detection sensor (10) are clamped and fixed by clamping plates (9). Positioning grooves are provided on both sides of the flaw detection sensor (10). Positioning blocks corresponding to the positioning grooves are protruding from the inner side of the clamping plate (9). The positioning blocks are inserted into the positioning grooves to limit the position of the flaw detection sensor (10).

4. A sensor for detecting weld crack defects in butt joints of instrument pipelines according to claim 3, characterized in that: A feed screw (7) is rotatably connected to the middle of the outer side of the clamping plate (9); the feed screw (7) passes through the side wall of the cover shell (1) and is connected to the outer side; a threaded hole corresponding to the feed screw (7) is provided on the cover shell (1); the feed screw (7) is threadedly connected in the threaded hole; a knob (8) is provided at the outer end of the feed screw (7).

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