Combined phased array probe device for ultrasonic flaw detection of hollow axle

Abstract

The utility model provides a combined phased array probe device for ultrasonic flaw detection of a hollow axle, which belongs to the technical field of flaw detection devices for hollow axles and comprises an annular phased array normal probe, a pair of annular phased array oblique-incidence probes comprising L-shaped high-density signal plugs, an L-shaped high-density signal socket, an oil delivery nozzle and a pair of sealing rings. The annular phased array perpendicular incidence probe comprises an annular wafer array and a first connector assembly; the annular phased array oblique incidence probe comprises a pair of annular conical wafer arrays, a pair of annular wedge blocks, a second connector assembly and an L-shaped high-density signal plug; the L-shaped high-density signal socket comprises an L-shaped semi-cylindrical shell with an oil inlet, a plurality of sockets and a rectangular circuit board. According to the utility model, when any probe breaks down, only the fault probe needs to be replaced, so that the maintenance and use costs are greatly reduced; according to the L-shaped high-density signal connector, the arrangement area of the connector is effectively increased, the replaceable plugging mode of the probe is realized, and the structure is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow axle flaw detection devices, in particular to a combined phased array probe device for ultrasonic flaw detection of hollow axles. Background Art

[0002] As a key load-bearing component of a high-speed EMU, the quality of the axle is directly related to the safety of train operation. High-speed power trains run at high speeds. In order to reduce the force between the rail and the wheel, the axle mass should be reduced as much as possible, and the axle should be designed as a hollow structure. With the hollowing process of the axle, ultrasonic testing of hollow axles has become an important part of the maintenance system. According to the structural characteristics of hollow axles, hollow axles are generally tested by internal scanning. As the core component of the detection, the performance of the probe directly affects the accuracy of the test results. Hollow shaft ultrasonic flaw detection probes are divided into two categories, one is the shear wave axial oblique probe, and the other is the radial direct probe, which detects different types of defects respectively. During the flaw detection, the full shaft detection is completed by scanning the probe. Generally, two scanning methods are used: multi-channel probe and phased array probe. Multi-channel probe scanning usually adopts a spiral forward method, but the probe wears a lot and the detection efficiency is low. Phased array probes can be divided into two types. One type uses phased array probes instead of multi-channel probes. Since phased array probes can achieve circumferential fan scanning and have a large coverage angle, axial scanning is usually performed in a circumferential stepping manner. The probe wear is relatively small and the efficiency is improved. However, multiple axial scans are still required to achieve full-axis flaw detection. The other type is a two-dimensional annular phased array probe. In theory, one probe can achieve direct and oblique sound beam detection, and the detection efficiency is also high. However, it is extremely difficult to achieve in practice, and there are currently no reports of any products that can be used for testing or production. In order to meet the requirements of high-efficiency detection in actual production, annular phased array probes can still be used to achieve full-axis flaw detection with a single axial scan. Due to the small internal space of the hollow shaft, the annular phased array probe has as many as hundreds of array elements, which brings great difficulties to the structural design of the probe. Utility Model Content

[0003] The purpose of the utility model is to provide a combined phased array probe device for ultrasonic flaw detection of hollow axles, so as to improve the reliability and flaw detection efficiency of ultrasonic flaw detection of hollow axles and solve at least one technical problem existing in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a combined phased array probe device for ultrasonic flaw detection of hollow axles, comprising: an annular phased array straight probe, a pair of annular phased array oblique probes including an L-shaped high-density signal plug, an L-shaped high-density signal socket, an oil delivery nozzle and a pair of sealing rings; wherein,

[0006] The annular phased array direct-fire probe comprises an annular wafer array composed of rectangular wafer array elements and a first connector assembly for docking with the oblique-fire probe;

[0007] The annular phased array oblique-beam probe comprises a pair of annular conical wafer arrays, a pair of annular wedges, a second connector assembly for docking with the direct-beam probe, and an L-shaped high-density signal plug;

[0008] The L-shaped high-density signal socket comprises an L-shaped semi-cylindrical shell with an oil inlet, a plurality of sockets and a rectangular circuit board.

[0009] Optionally, the connector assembly includes a first circular circuit board, a plurality of plugs, and a first annular shell; the plurality of plugs are welded on the circular circuit board in an equilateral polygon shape, the circular circuit board is fixed on the annular shell, and is installed at the tail of the annular phased array direct-beam probe.

[0010] Optionally, the rectangular chip array elements are evenly arranged on the circumference of the ring, and the signal line and ground line of each array element are welded to the front side of the circular circuit board.

[0011] Optionally, each chip array element in the annular conical chip array is trapezoidal, the trapezoidal chips are evenly arranged on the fan-shaped plane, and the inner surface of the annular wedge is a conical surface with a certain angle, and the annular conical chip array is pasted thereon.

[0012] Optionally, the second connector assembly includes a second circular circuit board, a plurality of sockets, and a second circular shell; the sockets are welded on the circular circuit board; the signal line is welded on the back of the circular circuit board, and is fixed on the circular shell and installed on the head of the oblique probe.

[0013] Optionally, the L-shaped high-density signal plug includes an L-shaped semi-cylindrical shell, a plurality of plugs and a rectangular circuit board; the probe signal line is welded on the back side of the rectangular circuit board, and a plurality of plugs are evenly welded on the front side.

[0014] Optionally, the L-shaped semi-cylindrical shell containing the oil inlet is used to fix the rectangular circuit board, and forms a closed cylinder with the L-shaped semi-cylindrical shell of the annular phased array oblique probe.

[0015] Optionally, the plurality of sockets are evenly welded on the front side of the rectangular circuit board, the number of which is consistent with the number of L-shaped high-density signal plugs and the same as the distribution of the plugs on the rectangular circuit board, and the sockets are plugged in one-to-one with the plugs.

[0016] Optionally, an oil delivery nozzle is installed at the tail of the L-shaped high-density signal socket of the combined probe, and a sealing ring and an oil inlet are provided, and an oil outlet and a sealing ring are provided at the head of the direct-emission probe.

[0017] Optionally, the outer diameter of the cylinder of the combined probe is consistent with and slightly smaller than the inner diameter of the hollow axle, so as to ensure that a stable oil film is formed between the outer surface of the probe and the inner surface of the axle being tested.

[0018] The beneficial effects of the utility model are as follows: the direct-beam probe and the oblique-beam probe are connected by docking with axle-section connectors and can be replaced freely. When any probe fails, only the failed probe needs to be replaced, which greatly reduces the cost of maintenance and use. The design of L-shaped high-density signal connectors effectively increases the layout area of ​​the connectors, realizes the replaceable probe connection method, and has a more compact structure.

[0019] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a three-dimensional structural diagram of a combined phased array probe device for ultrasonic flaw detection of hollow axles described in an embodiment of the utility model.

[0022] Figure 2 This is a structural exploded view of a combined phased array probe device for ultrasonic flaw detection of hollow axles according to an embodiment of the utility model.

[0023] Among them: 1-annular phased array direct-beam probe; 2-annular phased array oblique-beam probe including L-shaped high-density signal plug; 3-L-shaped high-density signal socket; 4-oil nozzle; 5-oil inlet; 6-oil outlet; 7-sealing ring; 8-plug; 9-socket; 10-signal line. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0025] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as generally understood by those skilled in the art to which the present invention belongs.

[0026] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with that in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0027] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or groups thereof.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0029] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot 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 at least one of the features. In the description of this utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of this specification, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present technology.

[0031] Unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0032] To facilitate the understanding of the present invention, the present invention is further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0033] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0034] Example

[0035] like Figure 1 , Figure 2 As shown, in this embodiment, a combined phased array probe device for ultrasonic flaw detection of hollow axles is provided, including an annular phased array direct-beam probe 1, a pair of annular phased array oblique-beam probes 2 including L-shaped high-density signal plugs, an L-shaped high-density signal socket 3, an oil delivery nozzle 4 and a pair of sealing rings 7.

[0036] The annular phased array direct-beam probe is used to detect internal defects of the axle. The outer surface is a cylinder, and the outer diameter is slightly smaller than the inner diameter of the axle. It includes an annular chip array composed of rectangular chip array elements and a connector assembly for docking with the oblique-beam probe. The first connector assembly includes a first circular circuit board, a plurality of plugs 8, and a first circular shell. The plurality of plugs are welded on the back of the circular circuit board in an equilateral polygonal shape. The circular circuit board is fixed on the circular shell and installed at the tail of the direct-beam probe. The rectangular chip array elements are evenly arranged on the circumference of the ring, and the signal line and ground line of each array element are welded on the front of the circular circuit board.

[0037] The annular phased array oblique probe is used to detect circumferential defects on the outer surface of the axle. The outer surface of the probe is a cylinder, and the radius of the cylinder is slightly smaller than the inner diameter of the hollow axle and consistent with the outer diameter of the direct probe. It includes a pair of annular conical chip arrays, a pair of annular wedges, a second connector assembly for docking with the direct probe, and an L-shaped high-density signal plug. Each chip array element in the annular conical chip array is a trapezoid. The trapezoidal chips are evenly arranged on the fan-shaped plane. The inner surface of the annular wedge is a cone with a certain angle, and the annular conical chip array is pasted on it. A pair of annular wedges are placed in reverse docking. The second connector assembly includes a second circular circuit board, a plurality of sockets 9, and a second annular shell. The sockets are welded on the front of the circular circuit board, and the number of the sockets is consistent with the number of plugs of the direct probe, and the distribution of the plugs on the circular circuit board is the same, so that the sockets and plugs can be plugged in one by one. The signal line 10 is welded on the back of the circular circuit board, fixed on the annular shell, and installed on the head of the oblique probe. The L-shaped high-density signal plug effectively expands the layout area of ​​the connectors and can realize high-density interconnection of data signals. It includes an L-shaped semi-cylindrical shell, a plurality of plugs and a rectangular circuit board. The L-shaped shell is used to fix the rectangular circuit board. The probe signal line is welded on the back of the rectangular circuit board, and a plurality of plugs are evenly welded on the front.

[0038] The L-shaped high-density signal socket is used for signal connection between the annular phased array probe and the flaw detector. It includes an L-shaped semi-cylindrical shell with an oil inlet 5, a plurality of sockets and a rectangular circuit board. The L-shaped semi-cylindrical shell with the oil inlet is used to fix the rectangular circuit board, and forms a closed cylinder with the L-shaped semi-cylindrical shell of the annular phased array oblique probe, and the outer diameter of the cylinder is consistent with the outer diameter of the probe. The plurality of sockets are evenly welded on the front of the rectangular circuit board, and their number is consistent with the number of L-shaped high-density signal plugs, and the same as the distribution of the plugs on the rectangular circuit board, so that the sockets and plugs can be plugged in one by one.

[0039] An oil delivery nozzle is installed at the tail of the L-shaped high-density signal socket of the combined probe, and a sealing ring and an oil inlet are provided. An oil outlet 6 and a sealing ring are provided at the head of the direct-emission probe. Oil is input as a coupling agent during the detection process. Since the outer diameter of the cylinder of the combined probe is consistent and slightly smaller than the inner diameter of the hollow axle, a stable oil film can be formed between the outer surface of the probe and the inner surface of the axle to be tested.

[0040] The annular phased array direct-emission probe consists of several rectangular chip array elements evenly distributed on a cylindrical surface, forming an annular chip array, which generates radially propagating ultrasonic waves to detect internal defects of hollow axles. The annular phased array oblique-emission probe evenly distributes all trapezoidal chip array elements on a fan-shaped surface, seamlessly connects the fan-shaped surfaces of the uniformly distributed chip array elements, forms an annular conical chip array, and generates an oblique transverse wave sound beam to detect defects on the outer surface of the hollow axle. During the detection process, oil is used as a coupling agent, which reaches the oil inlet through the oil delivery nozzle and enters the outer surface of the probe, and then outputs the oil through the oil outlet. A pair of sealing rings at the tail of the L-shaped high-density signal socket and the head of the direct-emission probe are used to fill the space between the outer surface of the probe and the inner surface of the axle being tested with oil, forming a stable coupling oil layer. The tail of the annular phased array direct-beam probe is equipped with a plug connector, and the head of the annular phased array oblique-beam probe is equipped with a socket connector. The plug and the socket are connected one by one, and the detection signal obtained by the direct-beam probe can be transmitted to the oblique-beam probe unit. Then, through the L-shaped high-density signal plug and the L-shaped high-density signal socket, the detection signal of the entire combined phased array probe is transmitted back to the flaw detector for data processing.

[0041] In summary, the combined phased array probe device for ultrasonic flaw detection of hollow axles described in the embodiment of the utility model is composed of an annular phased array direct-beam probe, a pair of annular phased array oblique-beam probes including an L-shaped high-density signal plug, an L-shaped high-density signal socket, an oil delivery nozzle, and a pair of sealing rings. The direct-beam probe and the oblique-beam probe are connected by axle cross-section connector docking, and can be replaced freely. When any probe fails, only the faulty probe needs to be replaced, which greatly reduces the maintenance and use costs. The inner diameter of the hollow axle is relatively small. Since the number of annular direct-beam probe array elements at the front end of the combined probe is about one hundred, the signal can be transmitted by axle cross-section plug-in, while the number of array elements that need to transmit signals at the rear end of the combined phased array probe is as high as several hundred. The axle cross-section plug-in method is not feasible. The design of the L-shaped high-density signal connector effectively increases the connector arrangement area, realizes the replaceable probe plug-in method, and has a more compact structure.

[0042] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution disclosed in the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work should be included in the scope of protection of the utility model.

Claims

1. A combined phased array probe device for ultrasonic flaw detection of hollow axles, characterized in that: include: An annular phased array direct-beam probe, a pair of annular phased array oblique-beam probes including an L-shaped high-density signal plug, an L-shaped high-density signal socket, an oil delivery nozzle and a pair of sealing rings; wherein, The annular phased array direct-fire probe comprises an annular wafer array composed of rectangular wafer array elements and a first connector assembly for docking with the oblique-fire probe; The annular phased array oblique-beam probe comprises a pair of annular conical wafer arrays, a pair of annular wedges, a second connector assembly for docking with the direct-beam probe, and an L-shaped high-density signal plug; The L-shaped high-density signal socket comprises an L-shaped semi-cylindrical shell with an oil inlet, a plurality of sockets and a rectangular circuit board.

2. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 1 is characterized in that: The connector assembly includes a first circular circuit board, a plurality of plugs, and a first annular shell; the plurality of plugs are welded on the circular circuit board in an equilateral polygonal shape, the circular circuit board is fixed on the annular shell and installed at the tail of the annular phased array direct-fire probe.

3. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 2 is characterized in that: The rectangular chip array elements are evenly arranged on the circumference of the ring, and the signal line and ground line of each array element are welded on the front side of the circular circuit board.

4. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 3 is characterized in that: Each chip array element in the annular conical chip array is a trapezoid, the trapezoidal chips are evenly arranged on the fan-shaped plane, and the inner surface of the annular wedge is a conical surface with a certain angle, and the annular conical chip array is pasted thereon.

5. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 4 is characterized in that: The second connector assembly includes a second circular circuit board, a plurality of sockets, and a second annular shell; the sockets are welded on the circular circuit board; the signal wire is welded on the back of the circular circuit board, fixed on the annular shell, and installed on the head of the oblique-beam probe.

6. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 5 is characterized in that: The L-shaped high-density signal plug comprises an L-shaped semi-cylindrical shell, a plurality of plugs and a rectangular circuit board; the back of the rectangular circuit board is welded with a probe signal line, and the front side is uniformly welded with a plurality of plugs.

7. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 6 is characterized in that: The L-shaped semi-cylindrical shell containing the oil inlet is used to fix the rectangular circuit board, and forms a closed cylinder with the L-shaped semi-cylindrical shell of the annular phased array oblique probe.

8. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 7 is characterized in that: The plurality of sockets are uniformly welded on the front side of the rectangular circuit board, the number of which is consistent with the number of L-shaped high-density signal plugs and the same as the distribution of the plugs on the rectangular circuit board, and the sockets are plugged in one-to-one with the plugs.

9. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 8, characterized in that: An oil delivery nozzle is installed at the tail of the L-shaped high-density signal socket, and a sealing ring and an oil inlet are arranged, and an oil outlet and a sealing ring are arranged at the head of the direct-emission probe.

10. The combined phased array probe device for ultrasonic flaw detection of hollow axles according to claim 9, characterized in that: The outer diameter of the cylinder of the combined probe is consistent and smaller than the inner diameter of the hollow axle, so as to form a stable oil film between the outer surface of the probe and the inner surface of the axle to be tested.

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