Turbine blade coating thickness water immersion ultrasonic detection device

Abstract

The utility model relates to ultrasonic detection, in particular to a turbine blade coating thickness water immersion ultrasonic detection device. Automatic detection is achieved, ultrasonic sound beams are kept perpendicular to the blade surface in the whole detection process, and the detection precision is improved. A turbine blade coating thickness water immersion ultrasonic detection device comprises a supporting unit. The supporting unit comprises a supporting frame and a water tank arranged on the supporting frame; motion units are arranged on the tops of the supporting frames. The motion unit comprises an X-axis motion assembly, a Y-axis motion assembly, a Z-axis motion assembly and a rotating assembly; the X-axis movement assembly, the Y-axis movement assembly and the Z-axis movement assembly form an X-axis movement platform, a Y-axis movement platform and a Z-axis movement platform; a rotating assembly is installed on the supporting frame, turbine blades are installed on the rotating assembly, and the turbine blades are located in the water tank; a lifting plate is mounted on the Z-axis movement assembly, and a water immersion ultrasonic probe is mounted on the lifting plate; the lifting plate is connected with the Z-axis movement assembly and connected with a probe in a clamping mode, and the probe is in communication connection with ultrasonic detection equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic detection especially relates to a turbine blade coating thickness water immersion ultrasonic detection device. BACKGROUND

[0002] Turbine blade is the core component of aero-engine, and the thickness of blade coating is related to its service life, material consumption, performance, bonding strength and stress. In the production and service process, the thickness of thermal barrier coating is usually measured by sampling destructive testing. Sampling detection not only affects the production efficiency of enterprises due to the damage of qualified parts, but also is difficult to detect each part comprehensively and effectively. As one of the conventional non-destructive testing methods, ultrasonic detection is a non-contact ultrasonic detection method in which a certain thickness of water layer is filled between the probe and the workpiece, and the sound wave first passes through the water layer and then enters the test piece. According to the water immersion state or degree of the workpiece, it can be divided into full immersion and partial immersion. Water immersion ultrasonic detection can eliminate the uncontrollable factors in direct contact detection, making the emission and reception of sound waves more stable, and the surface finish requirement of the test piece is not high, the probe is not easy to wear, the coupling is stable, and the detection result has good repeatability. Reducing manual interference, easy to realize automatic detection, improving detection speed.

[0003] Since the probe coupling surface is generally a plane and the blade surface has curvature, a certain gap will inevitably be formed between the probe and the blade surface during coupling. This gap cannot be eliminated, and the gap value changes in each detection area, so it is inevitable to bring errors during detection.

[0004] Since the turbine blade surface has curvature, and the direction of the ultrasonic wave emitted by the probe after surface coupling is generally perpendicular to the coupling surface, the measured thickness will often form an angle with the thickness to be measured, which is also difficult to avoid during detection.

[0005] In order to overcome the above shortcomings of the contact pulse echo ultrasonic detection method and further improve the measurement accuracy, a turbine blade coating thickness water immersion ultrasonic detection device is proposed, which makes the ultrasonic beam and the blade surface perpendicular during the whole detection process, and realizes high-precision measurement of the turbine blade coating thickness.

[0006] In the prior art, the patent with publication number CN220508866U and the name of "water immersion ultrasonic detection device for rotary workpiece" proposes a rotary workpiece in the water tank by driving the rotary workpiece to rotate 360° and supporting the rotary workpiece on the rotary assembly by the workpiece support assembly. However, it is difficult to accurately measure the detection position because the staff needs to manually turn the handle.

[0007] The patent with the publication number CN205785127U and the name "Gas turbine hot channel component thermal barrier coating in-service field contact type ultrasonic thickness measuring device" proposes a gas turbine hot channel component thermal barrier coating in-service field contact type ultrasonic thickness measuring device, which comprises an ultrasonic probe, a pulse emission receiver and a data acquisition card; the thickness values of the thermal barrier coating ceramic layer and the bonding layer can be obtained by measuring the interface reflection echo time difference and then multiplying the calibration sound speed of each layer, but since the measurement is a contact measurement without coupling, the measurement result error is large and the device is only suitable for workpieces with regular surface shapes. SUMMARY

[0008] The utility model discloses to the defects of prior art, provide a turbine blade coating thickness immersion ultrasonic detection device. It realizes automatic detection and ultrasonic beam and blade surface keep perpendicular in the whole detection, improve detection precision.

[0009] To realize the above-mentioned purpose, the utility model discloses the following technical scheme, a turbine blade coating thickness immersion ultrasonic detection device, including support unit, the support unit includes support frame and the water tank of setting up on support frame,

[0010] Support frame top is provided with motion unit, the motion unit includes X -axis motion subassembly, Y -axis motion subassembly, Z -axis motion subassembly, rotating component, wherein, X -axis motion subassembly, Y -axis motion subassembly, Z -axis motion subassembly three constitute XYZ three -axis motion platform, and X -axis motion subassembly installs on support frame top surface,

[0011] Rotating component is installed on the support frame, and turbine blade is installed on rotating component, and turbine blade is located in the water tank, and rotating component is used to drive turbine blade to rotate in the water tank,

[0012] Lifting plate is installed on Z -axis motion subassembly, and immersion ultrasonic probe is installed on lifting plate, and lifting plate is connected with Z -axis motion subassembly, and clamps probe, and probe communication connects to ultrasonic detection equipment. The sensor probe is used to detect turbine blade.

[0013] Further, the immersion ultrasonic probe and the ultrasonic detection equipment are connected through wireless communication.

[0014] Further, the rotating assembly comprises a rotating fixed plate arranged vertically, and the rotating fixed plate is fixedly connected to the support frame; a rotating flat plate is vertically arranged on the rotating fixed plate, a first motor is mounted on the rotating flat plate, a motor shaft of the first motor is connected with an angle mounting plate, and the angle mounting plate is vertically arranged; the first motor is used for driving the angle mounting plate (along the XZ plane) to rotate; the angle mounting plate is vertically mounted with a rotating table top, a second motor is mounted on the rotating table top, a motor shaft of the second motor is connected with a clamp fixed plate, and the clamp fixed plate (along the XY plane) is driven to rotate; and a turbine blade is detachably mounted on the bottom of the clamp fixed plate.

[0015] (embodiment, the bottom of the clamp fixed plate is provided with a groove, the top of the turbine blade is arranged in the groove, the sidewall of the clamp fixed plate is provided with a threaded hole, a threaded rod (threaded knob) passes through the threaded hole, a clamp pressing plate is mounted on the end of the threaded rod, and the clamp pressing plate is used for pressing the top of the blade; and the blade is fixed.)

[0016] Further, the bottom of the support frame is provided with a foot and a pulley.

[0017] Further, the support frame adopts a rectangular frame structure.

[0018] Further, the X-axis movement assembly is a pair, and the two X-axis movement assemblies are symmetrically mounted on the top of the support frame, and each X-axis movement assembly is provided with a sensor for detecting the position of the sliding part.

[0019] Further, the Y-axis movement assembly is mounted on the sliding part of the two X-axis movement assemblies, and the two X-axis movement assemblies and the Y-axis movement assembly form an XY-axis movement platform; and the Y-axis movement assembly is provided with a sensor for detecting the position of the sliding part.

[0020] Further, the Z-axis movement assembly is mounted on the sliding part of the Y-axis movement assembly, and the lifting plate is mounted on the sliding part of the Z-axis movement assembly.

[0021] Compared with the prior art, the utility model has the beneficial effects.

[0022] The turbine blade coating thickness water immersion ultrasonic detection device adopts X, Y and Z three-axis movement assemblies, the probes are driven and controlled to move in x, y and z three directions by the motors, manual interference is reduced, and automatic detection is realized.

[0023] The rotating assembly can control the XZ plane and XY plane rotation of the turbine blade, so that the ultrasonic beam and the turbine blade surface are always kept perpendicular during the detection process, the thickness of each position of the blade can be measured only once through clamping, the detection efficiency and the detection precision are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model makes further explanation below combining with the drawings and specific embodiment. The utility model protection scope is not only limited to the following content's expression.

[0025] Figure 1 It is the whole structure schematic diagram of water immersion ultrasonic detection device for turbine blade coating thickness.

[0026] Figure 2 It is support frame structure schematic diagram.

[0027] Figure 3 It is X, Y motion assembly structure schematic diagram.

[0028] Figure 4 It is Z axis motion assembly structure schematic diagram.

[0029] Figure 5 It is the structure schematic diagram of rotating assembly.

[0030] Figures 6-7 It is multi-angle schematic diagram of water immersion ultrasonic detection device for turbine blade coating thickness.

[0031] Figure 8 It is X, Y motion assembly side view.

[0032] Figure 9 It is Z axis motion assembly perspective view.

[0033] Figure 10 It is rotating assembly side view.

[0034] In the figure, 1 is support frame, 11 is X axis drag chain board, 12 is foot, 13 is pulley;

[0035] 2 is water tank;

[0036] 3 is X axis motion assembly, 4 is Y axis motion assembly;

[0037] 31 is motor, 32 is coupling cover, 33 is sliding plate, 34 is steel band, 35 is steel band pressing piece, 36 is sensor, 37 is inductive sheet, 38 sensor support;

[0038] 5 is Z axis motion assembly, 51 is motor, 52 is Z axis installation flat plate, 53 is Y axis drag chain board, 54 is right angle rib plate, 55 is Z axis installation plate, 56 is bearing seat, 57 is Z axis sliding plate;

[0039] 6 is rotating assembly, 61 is rotating fixed plate, 62 is first motor, 64 is second motor, 63 is rotating flat plate, 65 is rotating mesa, 66 is angle installation plate, 67 is clamp fixed plate, 68 is clamp pressing plate, 69 is baffle piece;

[0040] 7 is turbine blade;

[0041] 8 represents the lifting platform;

[0042] 9 is a water immersion ultrasonic probe. Detailed Implementation

[0043] To make the objectives, technical solutions, and beneficial effects of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0044] like Figures 1-10 As shown in the specific embodiment: a water immersion ultrasonic testing device for turbine blade coating thickness includes a support unit; the support unit includes a support frame 1 and a water tank 2 mounted on the support frame; a motion unit is provided on the top of the support frame 1; the motion unit includes an X-axis motion component, a Y-axis motion component, a Z-axis motion component 5, and a rotation component 6; wherein the X-axis motion component, Y-axis motion component, and Z-axis motion component constitute an XYZ three-axis motion platform; and the X-axis motion component is mounted on the top surface of the support frame 1; the rotation component 6 is mounted on the support frame 1, and a turbine blade 7 is mounted on the rotation component 6, with the turbine blade 7 located inside the water tank 2; the rotation component 6 is used to drive the turbine blade 7 to rotate inside the water tank; a lifting plate 8 is mounted on the Z-axis motion component 5, and a water immersion ultrasonic probe 9 is mounted on the lifting plate 8; the lifting plate 8 is connected to the Z-axis motion component 5 and clamps the probe, which is communicatively connected to the ultrasonic testing equipment. The water immersion ultrasonic probe 9 is wirelessly connected to the ultrasonic testing equipment.

[0045] Example 1: The rotating assembly 6 includes a vertically arranged rotating fixing plate 61, which is fixedly connected to the support frame 1. A rotating plate 63 is vertically arranged on the rotating fixing plate 61, and a first motor 62 is mounted on the rotating plate 63. The motor shaft of the first motor 62 is connected to an angle mounting plate 66, which is vertically arranged. The first motor 62 is used to drive the angle mounting plate 66 to rotate (along the XZ plane). A rotating table 65 is vertically mounted on the angle mounting plate 66, and a second motor 64 is mounted on the rotating table 65. The motor shaft of the second motor 64 is connected to a clamp fixing plate 67, which drives the clamp fixing plate 67 to rotate (along the XY plane). A turbine blade 7 is detachably mounted on the bottom of the clamp fixing plate 67. A groove is opened at the bottom of the clamp fixing plate 67, and the top of the turbine blade 7 is placed in the groove. A threaded hole is opened at the beginning of the side wall of the clamp fixing plate 67, and the end of the threaded rod (threaded knob) passes through the threaded hole. A clamp pressure plate 68 is installed at the end of the threaded rod to press against the top of the blade and fix the blade. Both the first motor 62 and the second motor 64 are waterproof motors.

[0046] The support frame 1 of the embodiment 2 adopts a rectangular frame structure, and the bottom of the support frame 1 is provided with a footing 12 and a pulley 13 for facilitating movement.

[0047] The X-axis movement assembly of the embodiment 3 is a pair, and the two X-axis movement assemblies are symmetrically installed at the top of the support frame 1, and each X-axis movement assembly is provided with a sensor for detecting the position of the sliding part. The Y-axis movement assembly is installed on the sliding part of the two X-axis movement assemblies, and the two X-axis movement assemblies and the Y-axis movement assembly form an XY-axis movement platform; and the Y-axis movement assembly is provided with a sensor for detecting the position of the sliding part. The Z-axis movement assembly 5 is installed on the sliding part of the Y-axis movement assembly, and the lifting plate 8 is installed on the sliding part of the Z-axis movement assembly 5.

[0048] The X-axis movement assembly of the embodiment 4 is a pair, and each includes a motor, a sensor, a sensor bracket, a shaft coupling, a steel belt, a steel belt pressing piece, a sliding plate, and an inductive sheet. The two X-axis movement assemblies are respectively and parallelly installed at the two ends of the support frame 1, the sensor bracket is installed on the two sides of the shaft body, the sensor is fixed on the sensor bracket, the steel belt is installed on the upper part of the bed, the steel belt pressing piece is arranged on the two sides of the steel belt and is fixed by an internal hexagonal screw, the inductive sheet is arranged on the two sides of the sliding plate, and the sliding plate is slidingly connected with the shaft body and is driven by the motor to move along the X-axis direction.

[0049] The Y-axis movement assembly of the embodiment 4 is installed on the two sliding plates of the X-axis, and is perpendicular to the X-axis movement assembly, and is driven by the motor to move along the Y-axis direction.

[0050] The Z-axis movement assembly 5 of the embodiment 4 is installed on the Y-axis sliding plate, and is perpendicular to the Y-axis movement assembly, and the Z-axis installation plate and the Z-axis installation flat plate are perpendicular to each other and are connected by a right-angle rib plate, the Z-axis installation plate is connected with the Z-axis shaft body, the other side of the Z-axis installation flat plate is connected with the Y-axis drag chain plate and the lower end is connected with the Y-axis sliding plate, and the sliding plate is driven by the motor to move along the Z-axis direction.

[0051] The working process of the embodiment 5 is as follows.

[0052] Step 1: The sound velocity calibration sample is made by using the same manufacturing process and parameters as the coating material.

[0053] Step 2: The sound velocity of the calibration sample is measured by using the pulse echo reflection type water immersion ultrasonic detection method, and the sound velocity v of the ultrasonic wave in the coating material is obtained according to the formula v = h / t.

[0054] Step 3: The turbine blade to be detected is fixed on the clamping device of the water immersion ultrasonic detection, water is slowly injected into the water tank until the turbine blade is completely submerged, and it is ensured that no small bubbles affecting the measurement are generated on the surface of the blade.

[0055] Step 4: Fix the water-immersed ultrasonic probe on the lifting plate and move it to the position to be detected along with the motion assembly, adjust the surface of the turbine blade to be perpendicular to the sound beam of the water-immersed ultrasonic probe through the rotating assembly 6, and adjust the distance between the water-immersed ultrasonic probe and the surface of the turbine blade through the XYZ three-axis motion assembly to make the ultrasonic wave reflection echo the highest.

[0056] Step 5: Identify and record the time difference Δt between the water / coating interface wave and the coating / blade substrate echo, and obtain the wall thickness value h = v x Δt of the turbine blade in this area.

[0057] Step 6: Move the water-immersed ultrasonic probe to the next position through various motion assemblies, repeat the operation of step 4, measure and record the next area to be detected, and so on, to obtain the coating thickness of the turbine blade in different areas.

[0058] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "preferred embodiment", "specific implementation", or "preferred implementation" 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 present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; therefore, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope defined by the claims of the present application.

Claims

1. A water immersion ultrasonic testing device for turbine blade coating thickness, comprising a support unit; characterized in that: The support unit includes a support frame (1) and a water tank (2) disposed on the support frame; A motion unit is provided on the top of the support frame (1); the motion unit includes an X-axis motion component, a Y-axis motion component, a Z-axis motion component (5), and a rotation component (6); wherein the X-axis motion component, the Y-axis motion component, and the Z-axis motion component constitute an XYZ three-axis motion platform; and the X-axis motion component is installed on the top surface of the support frame (1); A rotating assembly (6) is installed on the support frame (1), and a turbine blade (7) is installed on the rotating assembly (6), and the turbine blade (7) is located inside the water tank (2); the rotating assembly (6) is used to drive the turbine blade (7) to rotate inside the water tank; A lifting plate (8) is installed on the Z-axis motion assembly (5), and a water immersion ultrasonic probe (9) is installed on the lifting plate (8); the lifting plate (8) is connected to the Z-axis motion assembly (5) and clamps the probe, and the probe is communicatively connected to the ultrasonic testing equipment.

2. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 1, characterized in that: The water immersion ultrasonic probe (9) is wirelessly connected to the ultrasonic testing equipment.

3. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 1, characterized in that: The rotating assembly (6) includes a vertically arranged rotating fixing plate (61), which is fixedly connected to the support frame (1); a rotating plate (63) is vertically arranged on the rotating fixing plate (61), and a first motor (62) is installed on the rotating plate (63). The motor shaft of the first motor (62) is connected to an angle mounting plate (66), which is vertically arranged. The first motor (62) is used to drive the angle mounting plate (66) to rotate; a rotating table (65) is vertically installed on the angle mounting plate (66), and a second motor (64) is installed on the rotating table (65). The motor shaft of the second motor (64) is connected to a clamp fixing plate (67), which drives the clamp fixing plate (67) to rotate; a turbine blade (7) is detachably installed at the bottom of the clamp fixing plate (67).

4. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 1, characterized in that: The support frame (1) is equipped with feet (12) and pulleys (13) at the bottom.

5. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 1, characterized in that: The support frame (1) adopts a rectangular frame structure.

6. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 1, characterized in that: The X-axis motion components are a pair, and the two X-axis motion components are symmetrically installed on the top of the support frame (1), and each X-axis motion component is equipped with a sensor for detecting the position of the sliding part.

7. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 6, characterized in that: The Y-axis motion component is mounted on the sliding parts of the two X-axis motion components, and the two X-axis motion components and the Y-axis motion component constitute an XY-axis motion platform; and the Y-axis motion component is equipped with a sensor for detecting the position of the sliding parts.

8. The water immersion ultrasonic testing device for turbine blade coating thickness according to claim 7, characterized in that: The Z-axis motion assembly (5) is mounted on the sliding part of the Y-axis motion assembly, and the lifting plate (8) is mounted on the sliding part of the Z-axis motion assembly (5).

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