An ultrasonic flaw detection device and method for a multi-stage guide vane of an engine

Abstract

The present invention belongs to the technical field of guide vane detection, and specifically relates to an ultrasonic flaw detection device and method for multi-connected guide vanes of an engine. The ultrasonic flaw detection device for multi-connected guide vanes of an engine includes a machine body, and the machine body includes a detection box; by setting a moving frame and cooperating with a sealing component, the gap between the bottom of the moving frame and the surface of the guide vane is reduced, avoiding the outflow of the coupling agent from the bottom of the moving frame, and at the same time, making the coupling agent form a coupling area in the moving frame, improving the contact effect between the probe and the guide vane, thereby improving the accuracy of flaw detection; moreover, before applying the coupling agent, the cleaning plate has cleaned the surface of the guide vane, avoiding the contamination of the coupling agent by impurities on the guide vane, improving the purity of the coupling agent, and further improving the contact effect between the probe and the guide vane, and improving the accuracy of flaw detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of guide vane detection, and specifically relates to an ultrasonic flaw detection device and method for multi-connected guide vanes of an engine. Background Art

[0002] Ultrasonic flaw detection is an industrial non-destructive flaw detection method, which can quickly, conveniently, non-destructively and accurately detect, locate, evaluate and diagnose various defects inside workpieces; when using ultrasonic waves to detect the inside of guide vanes, a coupling agent needs to be applied to the guide vane detection points, and then an ultrasonic probe is used to detect the inside of the guide vanes.

[0003] Ultrasonic waves are high-frequency mechanical waves, which need to be transmitted through a medium to the guide vanes during the detection process. The commonly used transmission medium is the coupling agent; its function is to enable ultrasonic waves to cross air, dust, dirt, etc. without losing energy, transmit the energy to the surface of the guide vanes for reflection, scattering or penetration, form ultrasonic signals, and perform image display.

[0004] However, during the process of ultrasonic flaw detection of guide vanes, if there is grease, dust or other impurities on the surface of the guide vanes, it will cause the failure of the good contact between the probe and the blade, thereby interfering with the propagation of ultrasonic waves and reducing the measurement accuracy of guide vane flaw detection; and it will also contaminate the purity of the coupling agent applied on the guide vanes. The coupling agent is mixed with the grease or impurities on the surface of the guide vanes, resulting in signal loss of the probe and aggravating the influence of ultrasonic flaw detection; in addition, if the coupling agent is unevenly applied on the surface of the guide vanes, it will cause a decrease in the resolution of the displayed image and a blurred image, reducing the measurement accuracy of guide vane flaw detection. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the above technical problems; the present invention proposes an ultrasonic flaw detection device and method for multi-connected guide vanes of an engine.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention proposes an ultrasonic flaw detection device and method for multi-connected guide vanes of an engine, wherein the ultrasonic flaw detection device for multi-connected guide vanes of an engine includes a machine body, and the machine body includes:

[0007] A detection box, the detection box is installed at a position close to one side of the top of the machine body, and an ultrasonic component is installed in the detection box; one side of the detection box is fixed with an L-shaped detection rod through a hook, and a probe is installed at the L-shaped end of the detection rod. The probe is connected to the ultrasonic component through a wire harness passing through the detection rod. The detection rod is used to drive the probe to extend between the multi-connected guide vanes for flaw detection;

[0008] Fixing bracket, the fixing bracket is installed at a position on the top of the body close to the detection box, and an arc-shaped groove is opened at one end of the fixing bracket, and an arc-shaped plate is slidably connected in the arc-shaped groove; a fixing bolt is threadedly connected in the fixing bracket, and one end of the fixing bolt contacts the surface of the arc-shaped plate; an arc-shaped installation groove is opened on the outer surface of the arc-shaped plate, and a fixing plate is slidably connected in the installation groove; a pressing bolt is threadedly connected in the fixing bracket, and one end of the pressing bolt is rotatably connected to the fixing plate;

[0009] Swing rod, the swing rod is hinged to one side of the fixing bracket through a torsion spring; a sliding rod is slidably connected in the swing rod, and a first telescopic rod is installed on one side of the swing rod, and one side of the sliding rod is connected to the telescopic end of the first telescopic rod; a moving plate is fixedly connected to the side of the sliding rod close to the detection box, and a cleaning plate is slidably connected to the side of the moving plate close to the detection box, and a spring is arranged between the cleaning plate and the moving plate; a bottom plate is slidably connected to one side of the moving plate, and the bottom plate is located below the cleaning plate, and a spring is arranged between the bottom plate and the moving plate; a moving frame is slidably connected to one side of the cleaning plate, and a sealing component is arranged at the bottom of the moving frame;

[0010] Multi-connected guide vanes, the multi-connected guide vanes are installed in the installation groove, and the vanes in the multi-connected guide vanes are located between the cleaning plate and the bottom plate.

[0011] Preferably, an upper guide plate is fixedly connected to the side of the cleaning plate away from the moving plate, a lower guide plate is fixedly connected to the side of the bottom plate away from the moving plate, and the upper guide plate and the lower guide plate are symmetrically arranged; the moving plate is rotatably connected to the sliding rod, and a torsion spring is arranged between the moving plate and the sliding rod.

[0012] Preferably, the bottom of the cleaning plate is concave, and atomizing nozzles are evenly installed in the concave part in the middle of the bottom of the cleaning plate; a liquid storage tank is installed on the top of the body, and the liquid storage tank is connected to the atomizing nozzles through a hose; air grooves are evenly opened at the bottom of the cleaning plate, and a rotating shaft is rotatably connected in the air grooves; a rubber ring is fixedly connected to the middle part of the rotating shaft, and the outer surface of the rubber ring contacts the surface of the vanes in the multi-connected guide vanes; a cleaning sponge is arranged on the rotating shaft; a suction device is installed on the top of the body, and the suction end of the suction device is connected to the air grooves through a hose.

[0013] Preferably, extrusion blocks with a right-angled triangle cross-section are evenly arranged on the rotating shaft near the rubber ring, and the extrusion blocks are annularly distributed, and the inclined surface part of the extrusion block faces the inner wall of the air groove; a collision rod is slidably connected in the air groove through a spring, and the collision rod is far away from the atomizing nozzle.

[0014] Preferably, the sealing assembly includes a first airbag and a second airbag; the first airbag is arranged at the bottom of the cleaning plate near the moving frame, the second airbag is arranged at the bottom of the moving frame, and the first airbag and the second airbag are in contact with the surface of the blade in the multi-stage guide vane.

[0015] Preferably, a sliding frame is slidably connected to the top of the moving frame; a first block is fixedly connected to one side of the moving frame, a second block is fixedly connected to the upper side of the first block on one side of the sliding frame, and an electromagnet is installed above the second block on one side of the sliding frame; a second telescopic rod is installed on one side of the cleaning plate close to the moving frame, and a linkage plate is installed at the telescopic end of the second telescopic rod; a linkage groove is formed on one side of the linkage plate, and the first block and the second block are slidably connected in the linkage groove, and the electromagnet is located above the linkage plate; a dirt suction port is formed on one side of the cleaning plate close to the moving frame, and the dirt suction port is connected to a suction device through a hose, and the horizontal position of the dirt suction port is lower than the horizontal position of the top of the sliding frame.

[0016] Preferably, a plurality of extrusion rods are slidably connected to one side of the moving frame away from the cleaning plate, and a spring is arranged between the extrusion rods and the moving frame; a telescopic tube is arranged at a position close to the top of the extrusion rod, one end of the telescopic tube is fixedly connected to a smoothing plate, and adjacent smoothing plates are slidably connected.

[0017] Preferably, a sealing strip is arranged above the dirt suction port on one side of the cleaning plate, and the dirt suction port is inclined towards the bottom; a plastic sheet is arranged at the top of the extrusion rod, and the plastic sheet is made of a flexible material.

[0018] Preferably, a sealing block is arranged at a position where the cleaning plate is close to the moving box, and one side of the sealing block is in contact with the inner wall of the moving frame and the inner wall of the sliding frame; a baffle is fixedly connected to one side of the bottom of the cleaning plate close to the moving frame, and the baffle is located between the first airbag and the cleaning sponge.

[0019] An ultrasonic flaw detection method for multi-stage guide vanes of an engine, the flaw detection method uses the above ultrasonic flaw detection equipment, and the flaw detection method is as follows:

[0020] S1: Preparation work: Calibrate the ultrasonic wave and select the required probe for installation; determine the positions and the number of measurement points to be measured according to the structure and requirements of the guide vane; then clean the surface of the measurement points of the guide vane through the cleaning plate.

[0021] S2: Subsequently, pour a specified amount of coupling agent into the moving frame, and spread the coupling agent according to the shape of the blade surface through the sliding frame and the smoothing plate; then replace different probes for each measurement point according to the structure and measurement requirements of the guide vane.

[0022] S3: Place the detection rod on the plastic sheet, adjust the horizontal angle of the detection rod to ensure that the probe is in complete contact with the blade surface, and then perform flaw detection. The measurement results are displayed and stored on the screen in the ultrasonic component, and the ultrasonic component analyzes the measurement results and compares the differences between the measurement results.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. For the ultrasonic flaw detection equipment and method of a multi-stage guide vane of an engine according to the present invention, after the multi-stage guide vane is adjusted and fixed, rotate the swing rod. The swing rod drives the sliding rod to approach the arc plate, and the sliding rod drives the cleaning plate and the bottom plate into the space between adjacent guide vanes, so that the guide vane to be detected is located between the cleaning plate and the bottom plate. The cleaning plate and the bottom plate are squeezed by the middle guide vane and slide away from each other along the moving plate. The cleaning plate and the bottom plate are subjected to the acting force generated by their respective springs, achieving the effect that the cleaning plate and the bottom plate are closely attached to the surface of the guide vane. When the cleaning plate squeezes the guide vane for cleaning, the bottom plate can provide support for the guide vane, avoiding the situation that the guide vane is squeezed and bent, which may cause flaw detection data errors, thereby improving the protection of the guide vane during the flaw detection process.

[0025] For the ultrasonic flaw detection equipment and method of a multi-stage guide vane of an engine according to the present invention, by setting the moving frame and cooperating with the sealing component, the gap between the bottom of the moving frame and the surface of the guide vane is reduced. While avoiding the leakage of the coupling agent from the bottom of the moving frame, a coupling area is formed within the moving frame for the coupling agent, improving the contact effect between the probe and the guide vane, thereby improving the accuracy of flaw detection. And, before applying the coupling agent, the cleaning plate has cleaned the surface of the guide vane, avoiding the contamination of the coupling agent by impurities on the guide vane, improving the purity of the coupling agent, and further improving the contact effect between the probe and the guide vane, and improving the accuracy of flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is a perspective view of the flaw detection equipment in the present invention;

[0028] Figure 2 is a perspective view of the fixing frame in the present invention;

[0029] Figure 3 is a cross-sectional view of the fixing frame in the side view direction of the present invention;

[0030] Figure 4 is a cross-sectional view of the fixing frame in the front view direction of the present invention;

[0031] Figure 5 is an internal schematic diagram of the cleaning plate in the present invention;

[0032] Figure 6 is Figure 1 The partial enlarged view at position A in

[0033] Figure 7 is Figure 1 The partial enlarged view at position B in

[0034] Figure 8 is Figure 3 The partial enlarged view at position C in

[0035] Figure 9 is Figure 4 The partial enlarged view at position D in

[0036] Figure 10 is Figure 7 The partial enlarged view at position E in

[0037] Figure 11 It is the step diagram of the flaw detection method in the present invention.

[0038] In the figure: machine body 1, detection box 11, ultrasonic component 12, detection rod 13, probe 14, fixing frame 2, arc groove 21, arc plate 22, fixing bolt 23, installation groove 24, fixing plate 25, pressing bolt 26, swing rod 27, sliding rod 28, first telescopic rod 29, moving plate 3, cleaning plate 31, bottom plate 32, moving frame 33, sealing component 34, first airbag 35, second airbag 36, multi-connected guide vane 4, upper guide plate 5, lower guide plate 51, atomizing nozzle 6, liquid storage tank 61, air groove 62, rotating shaft 63, rubber ring 64, cleaning sponge 65, suction device 66, extrusion block 67, collision rod 68, sliding frame 7, first block 71, second block 72, electromagnet 73, second telescopic rod 74, linkage plate 75, linkage groove 76, sewage suction port 77, extrusion rod 8, telescopic tube 81, smoothing plate 82, sealing strip 83, plastic sheet 84, sealing block 85, baffle 86. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1:

[0041] Ultrasonic flaw detection is a non-destructive testing method in industry. It can quickly, conveniently, non-destructively and accurately detect, locate, evaluate and diagnose various internal defects of workpieces. When using ultrasonic waves to detect the inside of guide vanes, it is necessary to apply a coupling agent to the detection points of the guide vanes, and then use the ultrasonic probe 14 to detect the inside of the guide vanes.

[0042] Ultrasonic waves are a kind of high-frequency mechanical waves. During the detection process, they need to be transmitted through a medium into the guide vanes. The commonly used transmission medium is the coupling agent. Its function is to enable ultrasonic waves to cross air, dust, dirt, etc. without losing energy, transmit the energy to the surface of the guide vanes for reflection, scattering or penetration, form ultrasonic signals, and display images.

[0043] However, during the ultrasonic flaw detection process of the guide vanes, if there is grease, dust or other impurities on the surface of the guide vanes, it will cause the good contact effect between the probe 14 and the vanes to fail, thereby interfering with the propagation of ultrasonic waves and reducing the flaw detection measurement accuracy of the guide vanes. Moreover, it will also contaminate the purity of the coupling agent applied on the guide vanes. The grease or impurities on the surface of the guide vanes are mixed in the coupling agent, resulting in signal loss from the probe 14 and aggravating the influence of ultrasonic flaw detection. In addition, if the coupling agent is unevenly applied on the surface of the guide vanes, it will cause a decrease in the resolution of the displayed image and a blurred image, reducing the flaw detection measurement accuracy of the guide vanes.

[0044] In order to effectively solve the above problems, as shown in the accompanying drawings of the specification Figures 1 - 10 shown, an ultrasonic flaw detection device for multi-stage guide vanes of an engine includes a body 1, and the body 1 includes:

[0045] A detection box 11, the detection box 11 is installed at a position near one side of the top of the body 1, and an ultrasonic component 12 is installed inside the detection box 11. One side of the detection box 11 is fixed with an L-shaped detection rod 13 through a hook, and a probe 14 is installed at the L-shaped end of the detection rod 13. The probe 14 is connected to the ultrasonic component 12 through a wire harness passing through the detection rod 13. The detection rod 13 is used to drive the probe 14 to extend into the multi-stage guide vanes 4 for flaw detection. The ultrasonic component 12 is a conventional ultrasonic flaw detection device in the art. The probe 14 is a conventional part in the ultrasonic component 12 for emitting and receiving ultrasonic waves. Ultrasonic waves are emitted to the surface of the guide vanes through the probe 14, and the feedback signals are sent to the ultrasonic component 12. The ultrasonic component 12 displays the internal data of the guide vanes in the form of images through a display screen.

[0046] Fixing bracket 2, the fixing bracket 2 is installed at the top of the machine body 1 near the detection box 11, and an arc-shaped groove 21 is provided at one end of the fixing bracket 2, and an arc-shaped plate 22 is slidably connected in the arc-shaped groove 21; a fixing bolt 23 is threadedly connected in the fixing bracket 2, and one end of the fixing bolt 23 contacts the surface of the arc-shaped plate 22; an arc-shaped mounting groove 24 is provided on the outer surface of the arc-shaped plate 22, and a fixing plate 25 is slidably connected in the mounting groove 24; a pressing bolt 26 is threadedly connected in the fixing bracket 2, and one end of the pressing bolt 26 is rotatably connected to the fixing plate 25;

[0047] Swing rod 27, the swing rod 27 is hinged to one side of the fixing bracket 2 through a torsion spring, and the side of the swing rod 27 close to the detection box 11 contacts the side of the arc-shaped plate 22 away from the detection box 11; a sliding rod 28 is slidably connected in the swing rod 27, and a first telescopic rod 29 is installed on one side of the swing rod 27, and one side of the sliding rod 28 is connected to the telescopic end of the first telescopic rod 29; a moving plate 3 is fixedly connected to the side of the sliding rod 28 close to the detection box 11, and a cleaning plate 31 is slidably connected to the side of the moving plate 3 close to the detection box 11, and a spring is provided between the cleaning plate 31 and the moving plate 3; a bottom plate 32 is slidably connected to one side of the moving plate 3, and the bottom plate 32 is located below the cleaning plate 31, and a spring is provided between the bottom plate 32 and the moving plate 3; a moving frame 33 is slidably connected to one side of the cleaning plate 31, and a sealing component 34 is provided at the bottom of the moving frame 33; the first telescopic rod 29 is a conventional telescopic device;

[0048] Multi-link guide vane 4, the multi-link guide vane 4 is installed in the mounting groove 24, and the vanes in the multi-link guide vane 4 are located between the cleaning plate 31 and the bottom plate 32;

[0049] A upper guide plate 5 is fixedly connected to the side of the cleaning plate 31 away from the moving plate 3, a lower guide plate 51 is fixedly connected to the side of the bottom plate 32 away from the moving plate 3, and the upper guide plate 5 and the lower guide plate 51 are symmetrically arranged; the moving plate 3 is rotatably connected to the sliding rod 28, and a torsion spring is provided between the moving plate 3 and the sliding rod 28.

[0050] Specific working process: When detecting the multi-piece guide vane 4, first install the multi-piece guide vane 4. The multi-piece guide vane 4 is composed of multiple individual guide vanes and an arc-shaped mounting plate. The multiple individual guide vanes are fixed on the arc-shaped mounting plate to form the multi-piece guide vane 4. The staff places the mounting plate in the multi-piece guide vane 4 into the mounting groove 24, making the mounting plate in the multi-piece guide vane 4 fit the inner wall of the mounting groove 24. Rotate the compression bolt 26, and the compression bolt 26 drives the fixed plate 25 to approach the multi-piece guide vane 4 in the mounting groove 24 until the multi-piece guide vane 4 is squeezed and fixed. Subsequently, rotate the arc plate 22 to slide along the arc groove 21 on the fixed frame 2, so that the multi-piece guide vane 4 rotates along an arc-shaped movement trajectory until the staff levels the guide vane to be detected with a spirit level and fixes the arc plate 22 by tightening the fixing bolt 23, realizing the horizontal state of the guide vane during detection. While ensuring the stability of the multi-piece guide vane 4, it increases the convenience of adjusting the position state of the multi-piece guide vane 4 during detection. When it is convenient for the probe 14 to detect, the horizontal guide vane can slow down the flow of the coupling agent after it is applied to its surface, avoiding the situation that the coupling agent flows down or scatters due to the too large inclination angle of the guide vane after the coupling agent is applied, which affects the flaw detection work.

[0051] After the multi-piece guide vane 4 is adjusted and fixed, rotate the swing rod 27. The swing rod 27 drives the slide rod 28 to approach the arc plate 22. The slide rod 28 drives the cleaning plate 31 and the bottom plate 32 into the space between adjacent guide vanes, so that the guide vane to be detected is located between the cleaning plate 31 and the bottom plate 32. The cleaning plate 31 and the bottom plate 32 are squeezed by the middle guide vane and slide away from each other along the moving plate 3. The cleaning plate 31 and the bottom plate 32 are subjected to the acting force generated by their respective springs, realizing the effect that the cleaning plate 31 and the bottom plate 32 are closely attached to the surface of the guide vane. When the cleaning plate 31 squeezes the guide vane for cleaning, the bottom plate 32 can provide support for the guide vane, avoiding the situation that the guide vane is squeezed and bent, which may cause flaw detection data errors, thereby improving the protection of the guide vane during the flaw detection process.

[0052] The operation of the first telescopic rod 29 drives the sliding rod 28 to extend out of the swing rod 27. The sliding rod 28 drives the cleaning plate 31 and the bottom plate 32 to move along the surface of the guide vane through the moving plate 3. The cleaning plate 31 cleans the surface of the guide vane, improving the cleaning degree of the guide vane surface. By setting the sealing component 34, and the sealing component 34 is made of rubber. When the cleaning plate 31 moves, the sealing component 34 is in close contact with the surface of the guide vane after cleaning. Since the sealing component 34 is made of rubber, the frictional force between the sealing component 34 and the guide vane increases. Affected by the frictional force, the moving frame 33 slides with the cleaning plate 31 and gradually moves away from the cleaning plate 31, so that the surface of the guide vane is exposed between the moving frame 33 and the cleaning plate 31. The staff applies a gel-like coupling agent to the surface of the guide vane in the moving frame 33. Then, the staff holds the detection rod 13 and inserts the probe 14 into the coupling agent for flaw detection work. By setting the moving frame 33 and cooperating with the sealing component 34, the gap between the bottom of the moving frame 33 and the surface of the guide vane is reduced. While preventing the coupling agent from flowing out from the bottom of the moving frame 33, a coupling area is formed in the moving frame 33 for the coupling agent, improving the contact effect between the probe 14 and the guide vane, thereby improving the accuracy of flaw detection. Moreover, before applying the coupling agent, the cleaning plate 31 has cleaned the surface of the guide vane, preventing the coupling agent from being contaminated by impurities on the guide vane, improving the purity of the coupling agent, and further improving the contact effect between the probe 14 and the guide vane, and improving the accuracy of flaw detection.

[0053] Through the cooperation between the upper guide plate 5 and the lower guide plate 51, and both the upper guide plate 5 and the lower guide plate 51 are arc-shaped, and the upper guide plate 5 and the lower guide plate 51 are bent in opposite directions. When the sliding rod 28 drives the cleaning plate 31 and the bottom plate 32 close to the guide vane, the upper guide plate 5 and the lower guide plate 51 first contact the edge part of the guide vane and slide along the surface of the guide vane, so that the upper guide plate 5 and the lower guide plate 51 drive the cleaning plate 31 and the bottom plate 32 to move away from each other. While improving the smoothness of the movement of the cleaning plate 31 and the bottom plate 32, it prevents the edges of the cleaning plate 31 and the bottom plate 32 from squeezing the surface of the blade and causing damage.

[0054] And because the guide vane is in an irregular blade shape, the moving plate 3 and the sliding rod 28 are rotationally connected by a torsion spring. When the cleaning plate 31 and the bottom plate 32 rotate during the process of fitting the surface of the guide vane, the cleaning plate 31 and the bottom plate 32 drive the moving plate 3 to rotate, realizing the action that the cleaning plate 31 and the bottom plate 32 can rotate and adjust according to the bending shape of the surface of the guide vane, improving the fitting degree of the cleaning plate 31 and the moving frame 33 to the guide vane, further reducing the gap between the moving frame 33 and the surface of the guide vane, and preventing the coupling agent from flowing out of the moving frame 33 and contaminating the surfaces of other areas of the guide vane.

[0055] Embodiment Two:

[0056] On the basis of the first embodiment, as shown in the accompanying drawings of the specification Figures 1 - 9 As shown, the bottom of the cleaning plate 31 is concave, and atomizing nozzles 6 are evenly installed in the middle concave part of the bottom of the cleaning plate 31; a liquid storage tank 61 is installed at the top of the machine body 1, and the liquid storage tank 61 is connected to the atomizing nozzles 6 through a hose; air grooves 62 are evenly formed in the bottom of the cleaning plate 31, and a rotating shaft 63 is rotatably connected in the air grooves 62; a rubber ring 64 is fixedly connected to the middle part of the rotating shaft 63, and the outer surface of the rubber ring 64 contacts the surface of the blades in the multi-link guide vane 4; cleaning sponges 65 are arranged on the rotating shaft 63, and the number of the cleaning sponges 65 is at least two; a suction device 66 is installed at the top of the machine body 1, and the suction end of the suction device 66 is connected to the air grooves 62 through a hose; a cleaning liquid is stored in the liquid storage tank 61, and the cleaning liquid is alcohol with a purity of more than 80%, which has high volatility and good cleaning performance; the suction device 66 is a conventional suction device for dust and oil stains;

[0057] At the position of the rotating shaft 63 close to the rubber ring 64, extrusion blocks 67 with a right-angled triangle cross-section are evenly arranged, and the extrusion blocks 67 are annularly distributed. The inclined surface part of the extrusion block 67 faces the inner wall of the air groove 62; a collision rod 68 is slidably connected in the air groove 62 through a spring, and the collision rod 68 is far away from the atomizing nozzle 6.

[0058] Specific working process: During the movement of the cleaning plate 31, the cleaning plate 31 drives the rubber ring 64 to move on the surface of the guide vane through the rotating shaft 63. The friction force generated between the rubber ring 64 and the guide vane drives the rubber ring 64 to roll on its surface. The rubber ring 64 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the cleaning sponges 65 to rotate to wipe and clean the surface of the guide vane. And the suction device 66 sucks through the air grooves 62 on the surface of the cleaning sponges 65 and the guide vane, sucking out the impurities on the cleaning sponges 65, improving the cleaning degree of the cleaning sponges 65, and avoiding secondary pollution during the cleaning process; and, since the air grooves 62 are close to the surface of the guide vane, the air grooves 62 can also suck air on the surface of the guide vane when sucking air, cooperating with the cleaning sponges 65 to remove impurities and improving the cleaning degree; moreover, by cleaning in the way of sucking air, it is avoided that the impurities are scattered and floating during the cleaning process, resulting in the situation that the surfaces of other guide vanes are polluted; in addition, the staff can also install a motor in the cleaning plate 31, the output end of the motor is connected to the rotating shaft 63, and the rotating shaft 63 is driven by the motor to rotate to ensure the normal operation of the cleaning sponges 65 rotating and cleaning;

[0059] The cleaning plate 31 drives the rotating shaft 63 to move, and drives the atomizing nozzle 6 to move. The atomizing nozzle 6 sprays the highly volatile cleaning liquid in the liquid storage tank 61 onto the surface of the guide blade. While the cleaning liquid evaporates and dries, the cleaning sponge 65 wipes the wetted surface of the guide blade. The wiping of multiple cleaning sponges 65 cooperates with the spraying of the cleaning liquid by the atomizing nozzle 6 to improve the cleaning degree of the surface of the guide blade.

[0060] The rotation of the rotating shaft 63 drives the squeezing block 67 to rotate around the rotating shaft 63. During the rotation of the squeezing block 67, the inclined portion of the squeezing block 67 contacts and squeezes the collision rod 68, so that the collision rod 68 moves away from the cleaning sponge 65. The spring between the collision rod 68 and the air groove 62 contracts and accumulates force until the squeezing block 67 passes over the collision rod 68. The collision rod 68 is quickly moved to contact the cleaning sponge 65 under the influence of the spring reset, forming a slapping effect on the cleaning sponge 65. Impurities on the cleaning sponge 65 are slapped out and sucked away through vibration, thereby improving the cleanliness of the cleaning sponge 65, thereby improving the cleaning effect of the guide blade surface; and the cross-section of the collision rod 68 is circular, so that when the collision rod 68 contacts the cleaning sponge 65 for a long time, it will not affect the rotation of the cleaning sponge 65.

[0061] Embodiment three:

[0062] Based on the second embodiment, as shown in the accompanying drawings of the specification Figures 1 - 10 As shown, the sealing assembly 34 includes a first airbag 35 and a second airbag 36; the first airbag 35 is arranged at a position near the moving frame 33 at the bottom of the cleaning plate 31, and the second airbag 36 is arranged at the bottom of the moving frame 33, and the first airbag 35 and the second airbag 36 contact the blade surface of the multi-link guide blade 4;

[0063] The top of the moving frame 33 is slidably connected with a sliding frame 7; a No. 1 block 71 is fixedly connected to one side of the moving frame 33, and a No. 2 block 72 is fixedly connected to one side of the sliding frame 7 just above the No. 1 block 71, and an electromagnet 73 is installed on one side of the sliding frame 7 above the No. 2 block 72; a No. 2 telescopic rod 74 is installed on the side of the cleaning plate 31 close to the moving frame 33, and a linkage plate 75 is installed at the telescopic end of the No. 2 telescopic rod 74, and a spring is provided between the linkage plate 75 and the telescopic end of the No. 2 telescopic rod 74; a linkage groove 76 is provided on one side of the linkage plate 75, and the No. 1 block 71 is fixedly connected to the No. 2 block 72, and an electromagnet 73 is installed on one side of the sliding frame 7 above the No. 2 block 72; a No. 2 telescopic rod 74 is installed on the side of the cleaning plate 31 close to the moving frame 33, and a linkage plate 75 is installed at the telescopic end of the No. 2 telescopic rod 74, and a spring is provided between the linkage plate 75 and the telescopic end of the No. 2 telescopic rod 74; a linkage groove 76 is provided on one side of the linkage plate 75, and the No. 1 block 71 is fixedly connected to the No. 1 block 71. The second block 72 is slidably connected in the linkage groove 76, and the electromagnet 73 is located above the linkage plate 75; a sewage suction port 77 is opened on the side of the cleaning plate 31 close to the moving frame 33, and the sewage suction port 77 is connected to the suction device 66 through a hose, and the horizontal position of the sewage suction port 77 is lower than the horizontal position of the top of the sliding frame 7; the second telescopic rod 74 is a conventional telescopic device; the sliding connection part between the moving frame 33 and the sliding frame 7 is sealed; the electromagnet 73 is magnetically isolated from the moving frame 33 and the sliding frame 7 to prevent the electromagnet 73 from affecting the sliding of the sliding frame 7;

[0064] One side of the moving frame 33 away from the cleaning plate 31 is evenly and slidably connected with an extrusion rod 8, and a spring is arranged between the extrusion rod 8 and the moving frame 33; an expansion tube 81 is arranged near the top of the extrusion rod 8, one end of the expansion tube 81 is fixedly connected with a smoothing plate 82, and the adjacent smoothing plates 82 are slidably connected.

[0065] Specific working process: The cleaning plate 31 drives the first airbag 35 to contact and squeeze the surface of the guide vane. After being squeezed by the cleaning plate 31 and the guide vane, the first airbag 35 undergoes elastic deformation, so that the surface of the first airbag 35 fits on the surface of the guide vane, blocking the connection between the air groove 62 and the area inside the moving frame 33. While reducing the outflow of the coupling agent inside the moving frame 33, it prevents the coupling agent from being sucked into the air groove 62, improving the coating effect of the coupling agent; the moving frame 33 indirectly contacts and squeezes the surface of the guide vane through the second airbag 36, so that the second airbag 36 deforms under the squeezing of the moving frame 33 and the guide vane, and thus fits on the surface of the guide vane, reducing the gap between the bottom of the moving frame 33 and the surface of the guide vane, and further reducing the outflow of the coupling agent inside the moving frame 33; moreover, by setting the first airbag 35 and the second airbag 36, the cleaning plate 31 and the moving frame 33 are in flexible contact with the surface of the guide vane, avoiding scratching the surface of the guide vane during movement, thereby increasing the protection during the cleaning process of the guide vane;

[0066] When it is necessary to move the moving frame 33 away from the cleaning plate 31, the electromagnet 73 is powered off, and the linkage plate 75 rests on the telescopic end of the second telescopic rod 74 under the influence of the spring. At this time, the first block 71 and the second block 72 are located in the linkage groove 76. The second telescopic rod 74 works to push the first block 71 and the second block 72, thereby driving the moving frame 33 and the sliding frame 7 to move away from the cleaning plate 31 at the same time, exposing the flaw detection area on the surface of the guide vane between the moving frame 33 and the cleaning plate 31; the staff applies a gel-like coupling agent at a position inside the moving frame 33 away from the cleaning plate 31. Subsequently, the electromagnet 73 is powered on, and the linkage plate 75 is adsorbed and lifted by the electromagnet 73. The first block 71 disengages from the linkage groove 76, while the second block 72 is still in the linkage groove 76; the second telescopic rod 74 drives the sliding frame 7 to move closer to the cleaning plate 31 through the second block 72. The sliding frame 7 contacts the coupling agent and levels it. The excess coupling agent gradually rises as the gap between the sliding frame 7 and the cleaning plate 31 decreases. Until the inner wall of the sliding frame 7 contacts the sewage suction port 77, the suction device 66 sucks the excess coupling agent through the sewage suction port 77, avoiding the phenomenon that the coupling agent is applied manually, resulting in too much coupling agent and reducing the resolution of the flaw detection display image and blurring the image, thereby improving the flaw detection measurement accuracy of the guide vane;

[0067] Through the cooperation between the extrusion rod 8 and the smoothing plate 82, the bottom of the extrusion rod 8 contacts the surface of the guide vane, and rises and falls according to the concave and convex conditions of the guide vane surface, so that the adjacent extrusion rods 8 are staggered with each other, improving the fitting degree between the extrusion rod 8 and the guide vane surface. In addition, balls can be installed at the bottom of the extrusion rod 8 to prevent the cleaning plate 31 from scratching the guide vane surface during the process of driving the extrusion rod 8 to move;

[0068] The extrusion rod 8 drives the telescopic tube 81 to move, the telescopic tube 81 drives the smoothing plate 82 to rise or fall, the sliding frame 7 drives the smoothing plate 82 to move, the telescopic tube 81 extends, and the part of the smoothing plate 82 near the bottom levels the coupling agent. The bottoms of multiple smoothing plates 82 are arranged staggered in the bending state of the guide vane surface, keeping the gap between the bottom of each smoothing plate 82 and the guide vane surface the same, so that after the smoothing plate 82 levels the coupling agent, the thickness of the coupling agent on the guide vane surface tends to be the same, thereby improving the evenness of the coupling agent applied on the guide vane, and further improving the flaw detection measurement accuracy of the guide vane;

[0069] By setting the telescopic tube 81, during the reciprocating movement of the smoothing plate 82 and the sliding frame 7, the telescopic of the telescopic tube 81 makes the coverage range of the moving frame 33 or other components on the guide vane surface fixed, preventing some components from extending out of the coverage range of the cleaning plate 31 and the moving frame 33 due to the movement of the sliding frame 7, reducing the occupied area and occupied space of the cleaning plate 31 and the moving frame 33 on the guide vane surface, increasing the moving range of the cleaning plate 31 and the moving frame 33 on the guide vane surface, thereby increasing the detectable range on the guide vane surface and improving the practicability of the flaw detection equipment.

[0070] Example 4:

[0071] On the basis of Example 3, as shown in the accompanying drawings of the specification Figures 2 - 10 shown, a sealing strip 83 is arranged above the sewage suction port 77 on one side of the cleaning plate 31, and the sewage suction port 77 is inclined towards the bottom; a plastic sheet 84 is arranged at the top of the extrusion rod 8, and the plastic sheet 84 is made of flexible material;

[0072] A sealing block 85 is arranged at the part of the cleaning plate 31 close to the moving box, and one side of the sealing block 85 contacts the inner walls of the moving frame 33 and the sliding frame 7; a baffle 86 is fixedly connected to one side of the bottom of the cleaning plate 31 close to the moving frame 33, and the baffle 86 is located between the first air bag 35 and the cleaning sponge 65.

[0073] Specific working process: After the flaw detection is completed, the second telescopic rod 74 drives the moving frame 33 and the sliding frame 7 to approach the cleaning plate 31 through the first block 71 and the second block 72. The moving frame 33 and the sliding frame 7 squeeze the coupling agent inside, causing its liquid level to rise until it contacts the sewage suction port 77 and is discharged. At this time, one side of the sliding frame 7 close to the cleaning plate 31 contacts and squeezes the sealing strip 83, closing the gap between the sliding frame 7, the moving frame 33 and the cleaning plate 31. Since the sewage suction port 77 is inclined towards the bottom plate 32, during the suction process, the sewage suction port 77 sucks out the residual coupling agent between the sliding frame 7, the moving frame 33 and the cleaning plate 31, reducing the residue of the coupling agent, facilitating the cleaning of the flaw detection equipment by the staff after the flaw detection, and improving the convenience of use;

[0074] By setting the plastic sheet 84, and the plastic sheet 84 is made of flexible material. After the extrusion rod 8 fits on the surface of the guide vane, an interlaced state is formed. The extrusion rod 8 drives the plastic sheet 84 to bend, making the bending shape of the plastic sheet 84 tend to the bending shape of the guide vane surface. The staff holds the detection rod 13 and places the detection rod 13 on the surface of the plastic sheet 84, while the probe 14 extends into the coupling agent. Since the length of the extrusion rod 8 is fixed, the distance between the detection rod 13 placed on the plastic sheet 84 and the guide vane surface is fixed, so that the distance between the probe 14 and the guide vane surface is fixed. Each time the detection rod 13 is used for detection, the distance between the probe 14 and the guide vane surface is fixed, reducing the error caused by the different distances between the probe 14 and the guide vane surface, thereby improving the flaw detection accuracy;

[0075] After the flaw detection is completed, the cleaning rod moves towards the surface of the blade smeared with the coupling agent. The cleaning sponge 65 close to this area wipes the coupling agent remaining on the surface of the guide vane. Subsequently, the atomizing nozzle 6 sprays the cleaning liquid on this area to moisten it. Finally, after moistening, the cleaning sponge 65 far from this area approaches again to wipe this area, and through repeated wiping, the residual coupling agent in this area is removed, improving the cleaning degree of the blade surface and avoiding the influence on the guide vane surface caused by the residual coupling agent. In addition, after the atomizing nozzle 6 sprays the cleaning liquid, such as high-purity alcohol, the air suction in the air groove 62 accelerates the air flow around the cleaning liquid, thereby accelerating the volatilization of the cleaning liquid. Cooperating with the wiping action of the cleaning sponge 65, it accelerates the drying of the guide vane surface, avoiding the situation that the cleaning liquid volatilizes untimely and causes it to flow around or drip on other guide vanes, resulting in pollution;

[0076] By setting the sealing block 85, during the process of smoothing the coupling agent by the sliding frame 7, the sliding part between the sliding frame 7 and the cleaning plate 31 is squeezed by the sealing block 85, so that a sealing effect is generated during the mutual sliding of the sliding frame 7 and the moving frame 33 with the cleaning plate 31, avoiding the pollution caused by the scattering of the coupling agent;

[0077] By setting the baffle 86, during the movement of the cleaning plate 31, the first airbag 35 slides on the surface of the guide vane. The baffle 86 blocks the first airbag 35 to prevent the first airbag 35 from deforming during sliding and squeezing the cleaning sponge 65, which may cause the rotation of the cleaning sponge 65 to be blocked, thereby improving the cleaning efficiency of the cleaning sponge 65 during rotation. At the same time, it also prevents the excessive deformation of the first airbag 35 during sliding, which may affect the sealing effect of the gap between the moving frame 33 and the cleaning plate 31, thus enhancing the blocking effect of the first airbag 35 on the coupling agent.

[0078] Example Five:

[0079] An ultrasonic flaw detection method for multi-connected guide vanes of an engine, as shown in the accompanying drawings of the specification Figure 11 shown. This flaw detection method uses the above ultrasonic flaw detection equipment, and the flaw detection method is as follows:

[0080] S1: Preparation work: Calibrate the ultrasonic wave and select the required probe 14 for installation; Determine the positions and the number of measurement points to be measured according to the structure and requirements of the guide vane; Then clean the surface of the measurement points of the guide vane through the cleaning plate 31.

[0081] S2: Subsequently, pour a specified amount of coupling agent into the moving frame 33, and level the coupling agent according to the shape of the blade surface through the sliding frame 7 and the flattening plate 82; Then, according to the structure and measurement requirements of the guide vane, replace different probes 14 for each measurement point for measurement.

[0082] S3: Place the detection rod 13 on the plastic sheet 84, adjust the horizontal angle of the detection rod 13 to ensure that the probe 14 is completely attached to the blade surface, and then perform flaw detection; The measurement results are displayed and stored on the screen of the ultrasonic component 12. The ultrasonic component 12 analyzes the measurement results and compares the differences between the measurement results.

[0083] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic flaw detection device for a multi-stage guide vane of an engine, comprising a machine body (1), characterized in that, The body (1) includes: A detection box (11), the detection box (11) is installed at a position near one side of the top of the body (1), and an ultrasonic component (12) is installed in the detection box (11); one side of the detection box (11) is fixed with an L-shaped detection rod (13) through a hook, and a probe (14) is installed at the L-shaped end of the detection rod (13). The probe (14) is connected to the ultrasonic component (12) through a wire harness passing through the detection rod (13). The detection rod (13) is used to drive the probe (14) to extend between the multi-connected guide vanes (4) for flaw detection; A fixing frame (2), the fixing frame (2) is installed at a position near the detection box (11) on the top of the body (1), and an arc-shaped groove (21) is opened at one end of the fixing frame (2). An arc-shaped plate (22) is slidably connected in the arc-shaped groove (21); a fixing bolt (23) is threadedly connected in the fixing frame (2), and one end of the fixing bolt (23) contacts the surface of the arc-shaped plate (22); an arc-shaped installation groove (24) is opened on the outer surface of the arc-shaped plate (22), and a fixing plate (25) is slidably connected in the installation groove (24); a pressing bolt (26) is threadedly connected in the fixing frame (2), and one end of the pressing bolt (26) is rotatably connected to the fixing plate (25); A swing rod (27), the swing rod (27) is hinged to one side of the fixing frame (2) through a torsion spring; a sliding rod (28) is slidably connected in the swing rod (27), and a first telescopic rod (29) is installed on one side of the swing rod (27). One side of the sliding rod (28) is connected to the telescopic end of the first telescopic rod (29); a moving plate (3) is fixedly connected to the side of the sliding rod (28) close to the detection box (11), and a cleaning plate (31) is slidably connected to the side of the moving plate (3) close to the detection box (11). A spring is provided between the cleaning plate (31) and the moving plate (3); a bottom plate (32) is slidably connected to one side of the moving plate (3), and the bottom plate (32) is located below the cleaning plate (31). A spring is provided between the bottom plate (32) and the moving plate (3); a moving frame (33) is slidably connected to one side of the cleaning plate (31), and a sealing component (34) is arranged at the bottom of the moving frame (33); Multi-connected guide vanes (4), the multi-connected guide vanes (4) are installed in the installation groove (24), and the vanes in the multi-connected guide vanes (4) are located between the cleaning plate (31) and the bottom plate (32).

2. The ultrasonic flaw detection device for multi-connected guide vanes of an engine according to claim 1, characterized in that: An upper guide plate (5) is fixedly connected to the side of the cleaning plate (31) away from the moving plate (3), a lower guide plate (51) is fixedly connected to the side of the bottom plate (32) away from the moving plate (3), and the upper guide plate (5) and the lower guide plate (51) are symmetrically arranged; the moving plate (3) is rotatably connected to the sliding rod (28), and a torsion spring is provided between the moving plate (3) and the sliding rod (28).

3. An ultrasonic flaw detection device for a multi-stage guide vane of an engine according to claim 1, characterized in that: The bottom of the cleaning plate (31) is concave, and atomizing nozzles (6) are evenly installed at the sunken part in the middle of the bottom of the cleaning plate (31); a liquid storage tank (61) is installed at the top of the machine body (1), and the liquid storage tank (61) is connected to the atomizing nozzles (6) through a hose; air grooves (62) are evenly formed at the bottom of the cleaning plate (31), and a rotating shaft (63) is rotatably connected in the air grooves (62); a rubber ring (64) is fixedly connected to the middle part of the rotating shaft (63), and the outer surface of the rubber ring (64) contacts the surface of the blades in the multi-link guide blades (4); a cleaning sponge (65) is arranged on the rotating shaft (63); a suction device (66) is installed at the top of the machine body (1), and the suction end of the suction device (66) is connected to the air grooves (62) through a hose.

4. An ultrasonic flaw detection device for a multi-stage guide vane of an engine according to claim 3, characterized in that: At the position of the rotating shaft (63) close to the rubber ring (64), extrusion blocks (67) with a right-angled triangle cross-section are evenly arranged, and the extrusion blocks (67) are annularly distributed. The inclined surface part of the extrusion blocks (67) faces the inner wall of the air grooves (62); a collision rod (68) is slidably connected in the air grooves (62) through a spring, and the collision rod (68) is far away from the atomizing nozzle (6).

5. An ultrasonic flaw detection device for a multi-stage guide vane of an engine according to claim 1, characterized in that: The sealing assembly (34) includes a first airbag (35) and a second airbag (36); the first airbag (35) is arranged at the bottom of the cleaning plate (31) close to the moving frame (33), the second airbag (36) is arranged at the bottom of the moving frame (33), and the first airbag (35) and the second airbag (36) contact the surface of the blades in the multi-link guide blades (4).

6. An ultrasonic flaw detection device for multi-connected guide vanes of an engine according to claim 5, characterized in that: A sliding frame (7) is slidably connected to the top of the moving frame (33); a first block (71) is fixedly connected to one side of the moving frame (33), a second block (72) is fixedly connected to the side of the sliding frame (7) directly above the first block (71), and an electromagnet (73) is installed above the second block (72) on the side of the sliding frame (7); a second telescopic rod (74) is installed on the side of the cleaning plate (31) close to the moving frame (33), and a linkage plate (75) is installed at the telescopic end of the second telescopic rod (74); a linkage groove (76) is formed on one side of the linkage plate (75), and the first block (71) and the second block (72) are slidably connected in the linkage groove (76), and the electromagnet (73) is located above the linkage plate (75); a sewage suction port (77) is formed on the side of the cleaning plate (31) close to the moving frame (33), and the sewage suction port (77) is connected to the suction device (66) through a hose. The horizontal position of the sewage suction port (77) is lower than the horizontal position of the top of the sliding frame (7).

7. An ultrasonic flaw detection device for a multi-stage guide vane of an engine according to claim 6, characterized in that: On the side of the moving frame (33) away from the cleaning plate (31), extrusion rods (8) are evenly slidably connected, and springs are arranged between the extrusion rods (8) and the moving frame (33); a telescopic tube (81) is arranged at the position of the extrusion rods (8) close to the top, one end of the telescopic tube (81) is fixedly connected to a flattening plate (82), and the adjacent flattening plates (82) are slidably connected.

8. An ultrasonic flaw detection device for a multi-stage guide vane of an engine according to claim 7, characterized in that: A sealing strip (83) is provided above the sewage suction port (77) on one side of the cleaning plate (31), and the sewage suction port (77) is inclined towards the bottom; a plastic sheet (84) is provided at the top of the extrusion rod (8), and the plastic sheet (84) is made of a flexible material.

9. An ultrasonic flaw detection device for a multi-connected guide vane of an engine according to claim 8, characterized in that: A sealing block (85) is provided at a position of the cleaning plate (31) close to the moving box, and one side of the sealing block (85) contacts the inner wall of the moving frame (33) and the inner wall of the sliding frame (7); a baffle (86) is fixedly connected to one side of the bottom of the cleaning plate (31) close to the moving frame (33), and the baffle (86) is located between the first airbag (35) and the cleaning sponge (65).

10. An ultrasonic flaw detection method for multi-connected guide vanes of an engine, characterized in that, The flaw detection method uses the ultrasonic flaw detection equipment described in any one of claims 1-9 above, and the flaw detection method is as follows: S1: Preparation work: Calibrate the ultrasonic wave and select the required probe (14) for installation; Determine the positions and the number of measurement points to be measured according to the structure and requirements of the guide vane; Then clean the surface of the measurement points of the guide vane through the cleaning plate (31). S2: Subsequently, pour a specified amount of coupling agent into the moving frame (33), and spread the coupling agent according to the shape of the blade surface through the sliding frame (7) and the flattening plate (82); Then, according to the structure and measurement requirements of the guide vane, replace different probes (14) for measurement at each measurement point. S3: Place the detection rod (13) on the plastic sheet (84), adjust the horizontal angle of the detection rod (13) to ensure that the probe (14) is completely attached to the blade surface, and then perform flaw detection; The measurement results are displayed and stored on the screen in the ultrasonic component (12), and the ultrasonic component (12) analyzes the measurement results and compares the differences between the measurement results.

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