Material testing device under coupling action of erosion and cavitation erosion

Abstract

The utility model discloses a material testing device under erosion and cavitation coupling action, which comprises a container, an ultrasonic transducer, an injector head and a circulating device, a placing table is arranged in the container, the ultrasonic transducer is used for being arranged above the placing table, the injector head is arranged at the lower end of the ultrasonic transducer, and the circulating device is arranged on the placing table. The circulating device comprises a booster pump, a liquid inlet of the booster pump is communicated with the container, and a liquid outlet of the booster pump is connected with the injector head through a pipeline; in the using state, the ultrasonic transducer is electrically connected with an ultrasonic power source through a wire. According to the utility model, the erosion medium is pumped into the injector head through the booster pump, and meanwhile, the ultrasonic transducer enables the erosion medium to generate a large number of bubbles in the injector head, so that the erosion medium with the bubbles impacts a test material at a high speed, and the test condition of the hydraulic mechanical material is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially relates to a material testing arrangement under the coupling of erosion and cavitation. BACKGROUND

[0002] With the development of modern hydraulic machinery to large scale, large capacity, high speed, high performance direction, the synergistic effect of cavitation and sediment erosion is becoming a serious problem, but due to the lack of simulation prediction of the process, the reliability and stability of hydraulic machinery under the condition of sediment are limited, therefore, a material testing arrangement under the coupling of erosion and cavitation is provided for testing the material of hydraulic machinery.

[0003] Chinese patent document CN1334455A discloses a method and device for testing the corrosion erosion resistance of materials using ultrasonic waves, wherein the device comprises an ultrasonic generator and a motor, a rotating frame is fixed on the shaft of the motor, a rotating disc for fixing the sample to be tested is connected below the rotating frame, a corrosion medium is contained in the corrosion-resistant container of the ultrasonic generator, and the rotating frame is installed below the motor above the corrosion medium, and the motor drives the rotating disc to rotate; the distance and angle between the rotating disc and the corrosion medium in the container are adjusted by the fixed part, and the ultrasonic generator and the motor are electrically connected with the control cabinet through wires. Its characteristics are that the energy emitted by the ultrasonic generator makes the corrosion medium and particles in the container produce strong vibration, and the corrosion medium and impact particles corrode and impact the sample to be tested, so as to realize the erosion performance test of the sample to be tested; and its disadvantages are that the corrosion medium cannot be in high-speed contact with the sample to be tested during the test process, and the test conditions of the material of hydraulic machinery are not met. CONTENT

[0004] The utility model discloses a material testing arrangement under the coupling of erosion and cavitation, and the erosion medium is pumped into the injection head through the booster pump, meanwhile, the ultrasonic transducer makes the erosion medium produce a large number of bubbles in the injection head, so that the erosion medium with bubbles impacts the test material at high speed, thereby meeting the test conditions of the material of hydraulic machinery.

[0005] To achieve the above object, the utility model provides a material testing arrangement under the coupling of erosion and cavitation, which comprises a container, an ultrasonic transducer, an injection head and a circulating device, the inside of the container is provided with a placing table, the ultrasonic transducer is arranged above the placing table, the injection head is arranged at the lower end of the ultrasonic transducer, and the circulating device comprises a booster pump, the inlet of the booster pump is communicated with the container, and the outlet of the booster pump is connected with the injection head through a pipeline; in use, the ultrasonic transducer is electrically connected with an ultrasonic power supply through wires.

[0006] The end of the jet head connected with the ultrasonic transducer is provided with a screw rod, and the screw rod is screwed and fixed with a threaded hole on the ultrasonic transducer.

[0007] The jet head comprises a jet head body, a jet channel is arranged in the jet head body, a pipe joint is fixedly connected to the outer wall of the jet head body, the pipe joint is communicated with the jet channel, and the pipe is connected with the pipe joint on the jet head.

[0008] Further comprising a mechanical arm, a connecting piece is installed at the free end of the mechanical arm, the ultrasonic transducer is installed on the connecting piece, and the pipe is a hose.

[0009] A connecting sleeve is fixedly connected to the bottom of the placing table, a support is installed in the container, a motor is installed at the bottom of the support, an output shaft of the motor extends upward, and the placing table is installed on the output shaft of the motor through the connecting sleeve.

[0010] The support comprises a support plate and support rods, one end of the support rods is fixedly connected with the support plate, the other end is fixedly connected with the container to support, a through hole is arranged on the support plate, the motor is installed on the lower side of the support plate, and the output shaft of the motor extends from the through hole.

[0011] The placing table comprises a placing plate, a first stopper, an adjusting rod and a second stopper, the first stopper is fixedly installed on one side of the top surface of the placing plate, a groove is arranged on the other side of the top surface and is perpendicular to the first stopper, a guide part is arranged on the lower side of the second stopper and extends into the groove, one end of the adjusting rod is located in the groove, the other end extends out of the groove, the adjusting rod is rotationally and limitingly connected with the placing plate, and the adjusting rod is screwingly connected with the guide part of the second stopper in a threaded manner.

[0012] The container is further provided with a stirring device, and a stirring part of the stirring device extends into the container.

[0013] Compared with the prior art, the utility model has the following technical effects:

[0014] 1、 the utility model discloses a jet head is arranged in the container, and the jet head is connected with the pipe, and the pipe is connected with the ultrasonic transducer, so that the jet head can be driven to rotate by the ultrasonic transducer, and the test material can be rotated to meet different test requirements.

[0015] 2、 the utility model further comprises a mechanical arm, a connecting piece is installed at the free end of the mechanical arm, the ultrasonic transducer is installed on the connecting piece, and the jet head can be driven to rotate by the ultrasonic transducer, and the test material can be rotated to meet different test requirements.

[0016] 3、 the utility model discloses a motor drives the placing table to rotate, so that test material can rotate to meet different test requirements. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the bracket of this utility model.

[0020] Figure 3 This is a schematic diagram of the installation structure of the ultrasonic transducer and the jet head of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation structure of the ultrasonic transducer and connector of this utility model.

[0022] Figure 5 This is a top view of the placement platform of this utility model.

[0023] Figure 6 This is a side view of the placement platform of this utility model.

[0024] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure of AA.

[0025] Figure label:

[0026] Container 10, bracket 11, support plate 111, support rod 112, through hole 113;

[0027] Placement platform 12, placement plate 121, first stop 122, groove 123, adjusting rod 124, second stop 125, pressing block 126, connecting sleeve 127, limiting groove 128, neck 129;

[0028] Ultrasonic transducer 20, jet head 21, jet head body 211, jet channel 212, pipe connector 213, screw 214;

[0029] Circulation device 30, booster pump 31, pipeline 32;

[0030] Robotic arm 40, connector 41, flange 411, clamp 412;

[0031] Ultrasonic power supply 50, motor 60, stirring device 70. Detailed Implementation

[0032] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, the embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0033] Embodiment 1

[0034] Please refer to Figure 1 A material testing device under the coupling action of erosion and cavitation, comprising a container 10, further comprising an ultrasonic transducer 20, a jet head 21 and a circulating device 30, the inside of the container 10 is provided with a placing table 12, the ultrasonic transducer 20 is used to be installed to the upper position of the placing table 12, the jet head 21 is installed at the lower end of the ultrasonic transducer 20, the circulating device 30 comprises a booster pump 31, the liquid inlet of the booster pump 31 is communicated with the container 10, the liquid outlet of the booster pump 31 is connected with the jet head 21 through a pipeline 32; in use, the ultrasonic transducer 20 is electrically connected with an ultrasonic power supply 50 through a wire.

[0035] The container 10 is used for injecting erosion medium, the erosion medium adopts abrasive liquid, during testing, the abrasive type, concentration and pH value of the abrasive liquid are adjusted according to relevant test requirements. The placing table 12 is used for placing test materials, the booster pump 31 is used for sucking and pressurizing the erosion medium in the container 10 and then sending it into the jet head 21 through the pipeline 32, the ultrasonic transducer 20 provides energy for the jet head 21, so that a large number of bubbles are generated in the jet head 21, the erosion medium with bubbles impacts the test materials at high speed, thereby meeting the test conditions of hydraulic machinery materials.

[0036] In the embodiment, referring to Figure 3 The end, where the jet head 21 is connected with the ultrasonic transducer 20, is provided with a screw rod 214, the screw rod 214 is screwed and fixed with a threaded hole on the ultrasonic transducer 20. Further, the connecting end of the ultrasonic transducer 20 and the jet head 21 can also be smeared with glue.

[0037] In the embodiment, referring to Figure 3 The jet head 21 comprises a jet head body 211, the jet head body 211 is internally provided with a jet channel 212, a pipe joint 213 is fixedly connected to the outer wall of the jet head body 211, the pipe joint 213 is communicated with the jet channel 212, and the pipeline 32 is connected with the pipe joint 213 on the jet head 21.

[0038] Embodiment 2

[0039] On the basis of embodiment 1, referring to Figure 1The test device of the application further comprises a mechanical arm 40, a connecting piece 41 is installed at the free end of the mechanical arm 40, the ultrasonic transducer 20 is installed on the connecting piece 41, and the pipeline 32 is a hose. The adjustment and dynamic change of the erosion angle can be realized through the mechanical arm 40, so that the erosion medium can erode the test material at different angles and positions to meet different test requirements.

[0040] Specifically, referring to Figure 4 In the embodiment, the connecting piece 41 comprises a flange 411 and a clamp 412, the flange 411 is used to butt joint with the mounting flange at the free end of the mechanical arm 40, and the clamp 412 is used to clamp and fix the ultrasonic transducer 20.

[0041] Embodiment 3

[0042] Based on the embodiment 1 or the embodiment 2, referring to Figure 1 、 6 , the bottom of the placement table 12 is fixedly connected with a connecting sleeve 127. The inner part of the container 10 is installed with a support 11, the bottom of the support 11 is installed with a motor 60, the output shaft of the motor 60 extends upward, and the placement table 12 is installed on the output shaft of the motor 60 through the connecting sleeve 127. The placement table 12 is driven to rotate through the motor 60, so that the test material can rotate to meet different test requirements.

[0043] In the embodiment, the motor 60 is a submersible motor, and the motor 60 can be speed-adjusted through a frequency converter.

[0044] In the embodiment, referring to Figure 1 、 2 , the support 11 comprises a support plate 111 and a support rod 112, a plurality of support rods 112 are fixedly connected with the support plate 111 at one end and are fixedly connected with the container 10 at the other end for support, and a through hole 113 is arranged on the support plate 111. The motor 60 is installed on the lower side of the support plate 111, and the output shaft of the motor 60 extends out of the through hole 113.

[0045] The connecting sleeve 127 and the output shaft of the motor 60 can be connected through a key structure, and can be fixedly connected with the output shaft through the bolts on the connecting sleeve 127.

[0046] Embodiment 4

[0047] In the embodiment, in order to facilitate the fixation of the test material on the placement table 12 and prevent the test material from falling during the test, referring to Figure 5 、 6, 7, the placing table 12 includes placing plate 121, first stopper 122, adjusting rod 124 and second stopper 125, the top surface of placing plate 121 is fixedly installed with first stopper 122 on one side, recess 123 is arranged on the other side of the top surface, recess 123 is perpendicular to first stopper 122, the lower side of second stopper 125 is provided with guide part, the guide part extends into recess 123, one end of adjusting rod 124 is located in recess 123, the other end extends out of recess 123, adjusting rod 124 is rotationally and limitingly connected with placing plate 121, and adjusting rod 124 is threadedly connected with the guide part of second stopper 125 in a screwing manner.By rotating adjusting rod 124, second stopper 125 can be adjusted, so that the test material can be clamped and loosened.

[0048] Specifically, the end of recess 123 away from first stopper 122 is provided with limiting groove 128, referring to Figure 7 Adjusting rod 124 is provided with neck 129, neck 129 is movably clamped in limiting groove 128, pressing block 126 is installed above limiting groove 128, because the diameter of neck 129 is smaller than the diameter of adjusting rod 124, adjusting rod 124 is limited by limiting groove 128, because there is a gap between neck 129 and limiting groove 128, adjusting rod 124 can rotate, the part of adjusting rod 124 located in recess 123 is provided with external thread, adjusting rod 124 is threadedly connected with the guide part of second stopper 125 in a screwing manner, the end of adjusting rod 124 located outside recess 123 is provided with polygonal structure, which is convenient for installing hand wheel or being screwed by spanner.

[0049] Of course, adjusting rod 124 can be connected with placing plate 121 in a rotationally and limitingly manner by other structures, for example, UCF type bearing seat is installed on the corresponding side surface of placing plate 121, adjusting rod 124 is connected and fixed with the bearing inner hole in the bearing seat.

[0050] Embodiment 5:

[0051] In the embodiment, stirring device 70 is also installed on container 10, and the stirring part of stirring device 70 extends into container 10. Through the stirring of the stirring part, the abrasives are prevented from depositing, so that the erosion medium entering into booster pump 31 is more uniform.

[0052] The working principle or action process of the utility model is as follows:

[0053] The test material is placed on placing table 12 and fixed, and the relative position and angle of spraying head 21 and the test material are adjusted by programming mechanical arm 40.

[0054] Then, the abrasives liquid is put into container 10, and the abrasives type, concentration and pH value of the abrasives liquid are adjusted according to the relevant test requirements.

[0055] During the test, the booster pump 31, the ultrasonic power supply 50 and the mechanical arm 40 are started, the amplitude and frequency of the ultrasonic transducer 20 are set through the ultrasonic power supply 50 according to the test cavitation erosion intensity requirement, and the erosion intensity is adjusted by adjusting the rotating speed of the booster pump 31. The rotating speed of the booster pump 31 can be adjusted through a frequency converter.

Claims

1. An apparatus for testing materials under the combined action of erosion and cavitation, comprising a container (10), characterised in that: The ultrasonic transducer (20), the spray head (21) and the circulating device (30) are arranged in the container (10), the ultrasonic transducer (20) is arranged above the placing table (12), the spray head (21) is arranged at the lower end of the ultrasonic transducer (20), the circulating device (30) comprises a booster pump (31), the inlet of the booster pump (31) is communicated with the container (10), the outlet of the booster pump (31) is connected with the spray head (21) through a pipeline (32), and the ultrasonic transducer (20) is electrically connected with an ultrasonic power supply (50) through a wire in use.

2. The apparatus of claim 1, wherein: The spray head (21) is provided with a screw rod (214) at the end connected with the ultrasonic transducer (20), and the screw rod (214) is screwed and fixed with a threaded hole on the ultrasonic transducer (20).

3. A device for testing materials under the combined action of erosion and cavitation according to claim 1 or 2, characterised in that: The spray head (21) comprises a spray head body (211), the spray head body (211) is internally provided with a spray channel (212), the outer wall of the spray head body (211) is fixedly connected with a pipe joint (213), the pipe joint (213) is communicated with the spray channel (212), and the pipeline (32) is connected with the pipe joint (213) on the spray head (21).

4. The apparatus of claim 1, wherein: The mechanical arm (40) is further provided, the free end of the mechanical arm (40) is provided with a connecting piece (41), the ultrasonic transducer (20) is arranged on the connecting piece (41), and the pipeline (32) is a flexible pipe.

5. The apparatus of claim 1, wherein: The bottom of the placing table (12) is fixedly connected with a connecting sleeve (127), the inside of the container (10) is provided with a support (11), the bottom of the support (11) is provided with a motor (60), the output shaft of the motor (60) is upwardly extended, and the placing table (12) is arranged on the output shaft of the motor (60) through the connecting sleeve (127).

6. An apparatus for testing materials under combined erosion and cavitation according to claim 5, characterized in that: The support (11) comprises a support plate (111) and a support rod (112), a plurality of support rods (112) are fixedly connected with the support plate (111) at one end and are fixedly connected with the container (10) at the other end, the support plate (111) is provided with a through hole (113), the motor (60) is arranged on the lower side of the support plate (111), and the output shaft of the motor (60) is extended from the through hole (113).

7. The apparatus of claim 1 or 5 or 6, wherein: The placing table (12) comprises a placing plate (121), a first stop block (122), an adjusting rod (124) and a second stop block (125), the first stop block (122) is fixedly arranged on one side of the top surface of the placing plate (121), the other side of the top surface is provided with a groove (123), the groove (123) is perpendicular to the first stop block (122), the lower side of the second stop block (125) is provided with a guide portion, the guide portion extends into the groove (123), one end of the adjusting rod (124) is located in the groove (123), the other end of the adjusting rod (124) extends out of the groove (123), the adjusting rod (124) is rotationally and limitingly connected with the placing plate (121), and the adjusting rod (124) is screwed and fixed with the guide portion of the second stop block (125).

8. The apparatus of claim 1, wherein: The container (10) is also provided with a stirring device (70), and a stirring part of the stirring device (70) extends into the container (10).

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