A hydrodynamic experimental device

Abstract

The present invention relates to a device belonging to the field of water environment simulation experiments, and particularly to a hydrodynamic experimental device. The present invention provides a hydrodynamic experimental device that can prevent the phenomenon of deflection of the moving trajectory, ensure the smooth progress of the experiment, achieve the effect of sudden stop, and prevent the accurate data of the experiment from being affected. The present invention provides such a hydrodynamic experimental device, including: a cylinder and a cylinder; a cylinder is provided with a cylinder extending directly below it at an axial vertical portion; an impeller, an impeller is provided at a predetermined position of the cylinder away from the cylinder; a panel, a panel is provided on the cylinder. The moving direction of the cylinder is guided by a guide frame, thereby preventing the phenomenon of deflection of the moving trajectory of the cylinder, and thus ensuring the smooth progress of the experiment. The extrusion ring is blocked by a rubber block to achieve the effect of sudden stop. Furthermore, when the experiment is about to be completed, it prevents the impeller from still rotating in the water and affecting the accurate data of the experiment.

Description

Technical Field

[0001] The present invention relates to a device in the field of water environment simulation experiments, and more particularly to a hydrodynamic experimental device. Background Art

[0002] The flow around a rotating cylinder is a very important research direction in fluid mechanics research. Whether it is the lift problem of the rotating cylinder, the change in the shedding pattern of vortices, or the vortex frequency characteristics, they all need to be further studied. The principle of generating lift by a rotating cylinder is the Magnus effect. Currently, when conducting such experiments, most of the existing hydrodynamic experimental devices place a rotating cylinder statically in a container filled with a liquid, and then move the cylinder upward, so as to calculate the flow velocity at the substrate through the rotational speed and inner diameter of the cylinder.

[0003] Currently, most of the existing hydrodynamic experimental test devices for rotating cylinders conduct experiments by lifting the cylinder with a suspension rope. However, since no guiding mechanism is provided, it is impossible to prevent the cylinder from deflecting during movement, and the experiment does not proceed smoothly. At the same time, it is also impossible to achieve an emergency stop effect. When the experiment is about to end, the cylinder is still rotating in the water, affecting the accurate data of the experiment.

[0004] Based on the above-mentioned drawbacks in the existing technology, a hydrodynamic experimental device is specially designed to overcome the drawbacks of the existing technology, which can prevent the phenomenon of deflection of the moving trajectory, ensure the smooth progress of the experiment, achieve an emergency stop effect, and prevent the accurate data of the experiment from being affected. Summary of the Invention

[0005] In order to overcome the above-mentioned drawbacks of the existing technology, that is, since no guiding mechanism is provided, it is impossible to prevent the cylinder from deflecting during movement, the experiment does not proceed smoothly, and at the same time, it is also impossible to achieve an emergency stop effect. When the experiment is about to end, the cylinder is still rotating in the water, affecting the accurate data of the experiment. The technical problem to be solved by the present invention is to provide a hydrodynamic experimental device that can prevent the phenomenon of deflection of the moving trajectory, ensure the smooth progress of the experiment, achieve an emergency stop effect, and prevent the accurate data of the experiment from being affected.

[0006] To solve the above technical problem, the present invention provides such a hydrodynamic experimental device, including:

[0007] A cylinder and a column, with a column extending to directly below it provided on the axial vertical part of the cylinder;

[0008] An impeller, with an impeller provided at a predetermined position of the column away from the cylinder;

[0009] A panel, with a panel provided on the cylinder;

[0010] A bracket, with a bracket provided at a predetermined position directly above the cylinder;

[0011] A lifting component and a guiding mechanism are provided on the bracket.

[0012] The guiding mechanism includes:

[0013] A guiding frame is provided on one side of the bracket facing the cylinder for guiding the moving direction of the cylinder.

[0014] A sliding frame is provided on the cylinder.

[0015] An emergency stop mechanism is provided on the cylinder for stopping the rotation of the cylinder.

[0016] Preferably, the bottom of the guiding frame is in a ring shape, and the material of the ring part of the guiding frame is rubber.

[0017] Preferably, the emergency stop mechanism includes:

[0018] A rotating sleeve is provided inside the cylinder.

[0019] A rubber block is connected to one side of the rotating sleeve.

[0020] An extrusion ring is provided at the lower part of the cylinder.

[0021] A second winding wheel is rotatably provided inside the cylinder.

[0022] A pulling rope is provided on the second winding wheel and is connected to the rotating sleeve.

[0023] A limiting sleeve is provided on the side of the rotating sleeve connected to the pulling rope.

[0024] A motor is installed inside the cylinder, and the output shaft of the motor is connected to the second winding wheel.

[0025] Preferably, a load-bearing mechanism is further included, and the load-bearing mechanism includes:

[0026] A load-bearing block is placed inside the cylinder.

[0027] A guiding block is provided on one side of the cylinder opposite to the load-bearing block.

[0028] A sliding plate is provided on the guiding block.

[0029] Preferably, a resistance mechanism is further included, and the resistance mechanism includes:

[0030] A sliding block is provided at the upper part of the cylinder.

[0031] A resistance ring is provided on one side of the sliding block.

[0032] Preferably, it further includes a testing mechanism, and the testing mechanism includes:

[0033] A sensing device, with a sensing device provided on one side of the cylinder;

[0034] A triggering part, with a triggering part for triggering the sensing device provided in the middle of the cylinder.

[0035] Preferably, it further includes an interference avoidance mechanism, and the interference avoidance mechanism includes:

[0036] A wave suppressing plate, with a wave suppressing plate sleeved on the upper part of the guiding frame, for preventing the wave generated on the water surface from interfering with the rotation cylinder test.

[0037] Preferably, the interference avoidance mechanism further includes:

[0038] A sliding sleeve, with a sliding sleeve provided on the upper part of the guiding frame;

[0039] An elastic member, with an elastic member connected between the sliding sleeve and the wave suppressing plate.

[0040] On the basis of overcoming the shortcomings of the prior art, the beneficial effects that the present invention can also achieve are:

[0041] 1. By guiding the moving direction of the cylinder through the guiding frame, the phenomenon that the moving track of the cylinder deflects can be prevented, thereby ensuring the smooth progress of the experiment. By blocking the extrusion ring with the rubber block, the effect of sudden stop can be achieved, and when the experiment is about to be completed, the rotation of the impeller in the water can be prevented from affecting the accurate data of the experiment.

[0042] 2. By adding weight to the cylinder through the weight block and changing the number of weight blocks on the cylinder, the weight of the cylinder can be changed, so as to conduct experiments diversely when the motor speed remains unchanged.

[0043] 3. By adding resistance to the upward movement of the cylinder through the resistance ring, the experimental data can be changed, and thus experiments can be conducted diversely when the motor speed remains unchanged.

[0044] 4. The pressure value and triggering frequency of the extrusion sleeve can be sensed through the pressing sensor, so as to convert the physical signal into an electrical signal for more accurate experiments.

[0045] 5. Make the water surface level with the wave suppressing plate. The wave suppressing plate can prevent the wave generated on the water surface from interfering with the rotation cylinder test, thereby ensuring the accuracy of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0047] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0048] Figure 3 This is a three-dimensional structural schematic diagram of the load-bearing mechanism and the resistance mechanism of the present invention.

[0049] Figure 4 This is a three-dimensional structural schematic diagram of the testing mechanism of the present invention.

[0050] Figure 5 is Figure 4 an enlarged view of part A in

[0051] Figure 6 This is a three-dimensional structural schematic diagram of the emergency stop mechanism of the present invention.

[0052] The reference numerals in the drawings are: 1 - cylinder, 2 - cylinder, 3 - impeller, 4 - panel, 5 - bracket, 6 - lifting assembly, 61 - motor, 62 - first winding wheel, 63 - wire rope, 7 - guiding mechanism, 71 - guiding frame, 72 - sliding frame, 8 - emergency stop mechanism, 81 - rotating sleeve, 82 - rubber block, 83 - extrusion ring, 84 - second winding wheel, 85 - motor, 86 - pulling rope, 87 - limiting sleeve, 9 - load-bearing mechanism, 91 - load block, 92 - guiding block, 93 - sliding plate, 10 - resistance mechanism, 101 - sliding block, 102 - resistance ring, 11 - testing mechanism, 111 - push-button sensor, 112 - extrusion sleeve, 121 - wave-pressing plate, 122 - sliding sleeve, 123 - compression spring. Detailed implementation manners

[0053] The present invention will be further described below in conjunction with the drawings and embodiments.

[0054] Embodiment 1

[0055] A hydrodynamic experimental device, as Figures 1-3 shown, includes a cylinder 1, a cylinder 2, an impeller 3, a panel 4, a bracket 5, a lifting assembly 6, a guiding mechanism 7 and an emergency stop mechanism 8. The bottom of the cylinder 1 is rotatably penetrated by the cylinder 2, the lower end of the cylinder 2 is sleeved with the impeller 3, two panels 4 for recording and displaying test data and arranged symmetrically left and right are embedded in the middle of the cylinder 1, a bracket 5 is arranged directly above the cylinder 1, the bracket 5 is provided with a lifting assembly 6 for driving the cylinder 1 to move up and down reciprocally and a guiding mechanism 7 for guiding the moving direction of the cylinder 1. The guiding mechanism 7 includes a guiding frame 71 and a sliding frame 72. The lower side of the bracket 5 is connected with the guiding frame 71 extending downward to surround the cylinder 1. The bottom of the guiding frame 71 is annular in shape, which is used to increase the contact area with the bottom side of the container. Among them, the material of the annular part of the guiding frame 71 is rubber material, which is used to increase the friction when contacting the bottom side of the container. The lower part of the cylinder 1 is sleeved with a sliding frame 72 slidably sleeved on the guiding frame 71, and the cylinder 1 is provided with an emergency stop mechanism 8 for stopping the rotation of the cylinder 2.

[0056] As Figure 1As shown, the lifting assembly 6 includes a motor 61, a first wire winding wheel 62, and a wire rope 63. A motor 61 for power output is installed on the upper part of the bracket 5. A first wire winding wheel 62 rotatably penetrating the bracket 5 is connected to the output shaft of the motor 61. A wire rope 63 wound around the outside of the first wire winding wheel 62 and extending downward and slidably penetrating the bracket 5 is connected to the cylinder 1.

[0057] As Figures 4-6 shown, the emergency stop mechanism 8 includes a rotating sleeve 81, a rubber block 82, a pressing ring 83, a second wire winding wheel 84, a motor 85, a pulling rope 86, and a limiting sleeve 87. A rotating sleeve 81 surrounding the cylinder 2 is rotatably provided on the inner bottom of the cylinder 1. A rubber block 82 is connected to the inner side of the rotating sleeve 81. A pressing ring 83 for pressing the rubber block 82 is sleeved on the lower part of the cylinder 2. A second wire winding wheel 84 is rotatably provided on the inner side of the lower part of the cylinder 1. A pulling rope 86 wound around the middle of the second wire winding wheel 84 and connected to the rotating sleeve 81 is connected to the second wire winding wheel 84. A limiting sleeve 87 for restricting the position of the pulling rope 86 is rotatably provided on the upper side of the rotating sleeve 81. A motor 85 for power output is installed on the inner side of the lower part of the cylinder 1. The output shaft of the motor 85 is connected to the second wire winding wheel 84.

[0058] The operator can apply the corresponding technical solutions in the device to the technology of the experimental device according to the specific situation. When the operator needs to use the device to assist in the operation of the hydrodynamic experiment, first, the operator installs the bracket 5 at the mouth of the container containing water, and the guide frame 71 is supported on the inner bottom side of the container, so that the cylinder 1 and all the components provided thereon are placed still in the water, and then the operator starts the motor 61, and the output shaft of the motor 61 will drive the first winding wheel 62 to rotate, and the first winding wheel 62 will reel up the wire rope 63, and the wire rope 63 will drive the cylinder 1 and all the components provided thereon to move upward, and the impeller 3 will move upward and drive the cylinder 2 to rotate under the action of the water flow, so that The experiment of hydrodynamics is carried out, and the experimental data can be recorded and displayed through the panel 4. At the same time, the rotation of the cylinder 2 will drive the extrusion ring 83 to rotate. The extrusion ring 83 will contact the rubber block 82 during the rotation. When the extrusion ring 83 rotates to contact the rubber block 82, the extrusion ring 83 continues to rotate to squeeze the rubber block 82, and the rubber block 82 is deformed. Then the extrusion ring 83 continues to rotate to loosen the rubber block 82, and the rubber block 82 returns to its initial shape. At this time, the rubber block 82 will generate residual force due to the extrusion of the extrusion ring 83 to drive the rotating sleeve 81 to rotate. The rotating sleeve 81 will pull the second winding wheel 84 to rotate through the pull rope 86, and the second winding wheel 84 will release the pull rope 86, and the extrusion ring 83 Continuing to rotate will contact the rubber block 82 again. This reciprocating motion will enable the extrusion ring 83 to continuously move the rubber block 82, and the second winding wheel 84 will continue to release the pull rope 86. The limit sleeve will limit the position of the pull rope 86 to prevent the pull rope 86 from being wound around the cylinder 2. When the impeller 3 moves upward and is about to leave the water surface, the operator turns off the motor 61. At this time, the second winding wheel 84 completely releases the pull rope 86, and the rubber block 82 cannot continue to rotate. Since the motor 61 is turned off, the impeller 3 no longer moves upward. Therefore, the impeller 3 will no longer drive the cylinder 2 to rotate under the action of the water flow, so the rubber block 82 will block the extrusion ring 83, so that the cylinder 2 stops rotating, thereby achieving an emergency stop. The effect is achieved by preventing the impeller 3 from rotating in the water and affecting the accurate data of the experiment when the experiment is about to be completed. After the experiment is completed, the operator controls the motor 61 and the motor 85, and uses the motor 61 to move the cylinder 1 and all the components thereon downward to reset, and then turns off the motor 61, and uses the motor 85 to make the second winding wheel 84 rotate in the opposite direction to reel in the pull rope 86, so as to prepare for the next emergency stop operation, and then turns off the motor 85. In addition, the upward movement of the cylinder 1 will drive the sliding frame 72 to move upward along the guide frame 71, so as to guide the moving direction of the cylinder 1 through the guide frame 71, thereby preventing the moving trajectory of the cylinder 1 from deflecting, thereby ensuring the smooth progress of the experiment.

[0059] Example 2

[0060] On the basis of Example 1, Figures 1-3As shown, it further includes a weight mechanism 9 for increasing the weight of the cylinder 1. The weight mechanism 9 includes a weight block 91, a guide block 92, and a sliding plate 93. The weight block 91 is placed inside the upper part of the cylinder 1. Two symmetrically arranged guide blocks 92 are connected to the upper part of the cylinder 1. A sliding plate 93 that surrounds the front of the cylinder 1 and is used to block the weight block 91 is slidably sleeved between the two guide blocks 92.

[0061] Initially, the sliding plate 93 blocks the weight block 91 on the cylinder 1. By adding the weight of the weight block 91, the weight of the cylinder 1 is increased, thereby changing the experimental data. The operator drives the sliding plate 93 to move upward to no longer block the weight block 91, and then the operator changes the number of weight blocks 91 on the cylinder 1 to change the weight of the cylinder 1, so as to diversify the experiment under the condition that the rotational speed of the motor 61 remains unchanged. Finally, the operator drives the sliding plate 93 to move downward to reset, thus completing the operation of weight adjustment.

[0062] Embodiment 3

[0063] On the basis of Embodiment 2, as Figure 1 and Figure 3 shown, it further includes a resistance mechanism 10 for increasing the resistance of the cylinder 1. The resistance mechanism 10 includes a sliding block 101 and a resistance ring 102. Two symmetrically arranged sliding blocks 101 are slidably penetrated through the upper part of the cylinder 1. A resistance ring 102 for increasing the contact area with the water body is connected to the right side of the front sliding block 101 and the left side of the rear sliding block 101.

[0064] Initially, the resistance ring 102 blocks the upper part of the cylinder 1, thereby increasing the resistance of the cylinder 1 when it moves upward through the resistance ring 102, so as to change the experimental data and further diversify the experiment. The operator drives the resistance ring 102 to move outward, and the resistance ring 102 will drive the sliding block 101 to move outward. Initially, the sliding block 101 is located inside the cylinder 1. When the sliding block 101 moves outward, it will move out of the inside of the cylinder 1, so as to remove the resistance ring 102 from the upper part of the cylinder 1 and thus conduct the experiment normally. Finally, the operator resets the sliding block 101 back into the inside of the cylinder 1, so that the resistance ring 102 blocks the upper part of the cylinder 1 again.

[0065] Embodiment 4

[0066] On the basis of Embodiment 3, as Figure 3 and Figure 4 shown, it further includes a testing mechanism 11 for testing the rotation data of the cylinder 2. The testing mechanism 11 includes a pressure sensor 111 and an extrusion sleeve 112. The pressure sensor 111 is installed on the left side of the middle part of the cylinder 1, and an extrusion sleeve 112 for extruding the pressure sensor 111 is sleeved on the middle part of the cylinder 2.

[0067] The rotation of the cylinder 2 drives the rotation of the extrusion sleeve 112. During the rotation process, the extrusion sleeve 112 continuously extrudes the pressing sensor 111. The pressing sensor 111 senses the pressure value and triggering frequency of the extrusion sleeve 112, thereby converting the physical signal into an electrical signal for more accurate experiments.

[0068] Embodiment 5

[0069] Based on Embodiment 4, as Figure 1 shown, it further includes a disturbance avoidance mechanism for pressing down the water surface. The disturbance avoidance mechanism includes a wave pressing plate 121. The upper part of the guiding frame 71 is sleeved with a wave pressing plate 121 for covering the water surface to avoid the interference of the water surface waves on the test of the rotating cylinder 2.

[0070] As Figure 1 shown, the disturbance avoidance mechanism further includes a sliding sleeve 122 and a compression spring 123. The upper part of the guiding frame 71 is slidably sleeved with two sliding sleeves 122 which are symmetrically arranged front and back and are located directly below the wave pressing plate 121. A compression spring 123 surrounding the guiding frame 71 is connected between the upper side of the sliding sleeve 122 and the lower side of the wave pressing plate 121.

[0071] During the hydrodynamic experiment, the water surface is made level with the wave pressing plate 121. The wave pressing plate 121 can avoid the interference of the water surface waves on the test of the rotating cylinder 2, thereby ensuring the accuracy of the experiment. Then, when the sliding frame 72 moves upward, it will contact the sliding sleeve 122. When the sliding frame 72 moves upward to contact the sliding sleeve 122, the continuous upward movement of the sliding frame 72 will drive the sliding sleeve 122 to move upward, compressing the compression spring 123. When the compression spring 123 is compressed to the threshold value, the operator can turn off the motor 61 to prevent the collision between the cylinder 1 and the wave pressing plate 121. Then, when the cylinder 1 moves downward to reset, it will drive the sliding frame 72 to move downward to release the sliding sleeve 122, and the compression spring 123 resets. The sliding sleeve 122 will move downward to reset under the action of the reset of the compression spring 123.

[0072] The above-described embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A hydrodynamic experimental device, comprising: A cylinder (1) and a cylinder (2), with a cylinder (2) extending vertically downward on the axial vertical part of the cylinder (1); An impeller (3), with an impeller (3) provided at a predetermined position of the cylinder (2) away from the cylinder (1); A panel (4), with a panel (4) provided on the cylinder (1); Characterized in that, It further includes: A bracket (5), with a bracket (5) provided at a predetermined position directly above the cylinder (1); A lifting assembly (6) and a guiding mechanism (7), with a lifting assembly (6) and a guiding mechanism (7) provided on the bracket (5); The guiding mechanism (7) includes: A guiding frame (71), with a guiding frame (71) for guiding the moving direction of the cylinder provided on the side of the bracket (5) facing the cylinder (1); A sliding frame (72), with a sliding frame (72) provided on the cylinder (1); An emergency stop mechanism (8), with an emergency stop mechanism (8) for stopping the rotation of the cylinder (2) provided on the cylinder (1); The emergency stop mechanism (8) includes: A rotating sleeve (81), with a rotating sleeve (81) provided inside the cylinder (1); A rubber block (82), with a rubber block (82) connected to one side of the rotating sleeve (81); A pressing ring (83), with a pressing ring (83) provided at the lower part of the cylinder (2); A second winding wheel (84), with a second winding wheel (84) rotatably provided inside the cylinder (1); A pulling rope (86), with a pulling rope (86) connected to the rotating sleeve (81) provided on the second winding wheel (84); A limiting sleeve (87), with a limiting sleeve (87) provided on the side of the rotating sleeve (81) connected to the pulling rope (86); A motor (85), with a motor (85) installed inside the cylinder (1), and the output shaft of the motor (85) is connected to the second winding wheel (84).

2. The hydrodynamic experimental device according to claim 1, characterized in that: The shape of the bottom of the guiding frame (71) is annular, wherein the material of the annular part of the guiding frame (71) is rubber material.

3. The hydrodynamic experimental device according to claim 1, wherein, It further includes a weight-bearing mechanism (9), and the weight-bearing mechanism (9) includes: A weight block (91), with a weight block (91) placed inside the cylinder (1); A guiding block (92), with a guiding block (92) provided on the side of the cylinder (1) opposite to the weight block (91); A sliding plate (93), with a sliding plate (93) provided on the guiding block (92).

4. A hydrodynamic experimental device according to claim 1, characterized in that, It further includes a resistance mechanism (10), and the resistance mechanism (10) includes: A sliding block (101), with a sliding block (101) provided at the upper part of the cylinder (1); A resistance ring (102), with a resistance ring (102) provided on one side of the sliding block (101).

5. A hydrodynamic experimental device according to claim 1, characterized in that, It further includes a testing mechanism (11), and the testing mechanism (11) includes: A sensing device, with a sensing device provided on one side of the cylinder (1); A triggering part, with a triggering part for triggering the sensing device provided in the middle of the cylinder (2).

6. The hydrodynamic experimental device according to claim 1, characterized in that, It further includes an anti-interference mechanism, and the anti-interference mechanism includes: A wave suppressing plate (121), with a wave suppressing plate (121) sleeved on the upper part of the guiding frame (71), for preventing the interference of the water surface wave generation on the test of the rotating cylinder (2).

7. The hydrodynamic experimental device according to claim 6, characterized in that, The anti-interference mechanism further includes: A sliding sleeve (122), with a sliding sleeve (122) provided on the upper part of the guiding frame (71); Elastic member. An elastic member is connected between the sliding sleeve (122) and the wave pressing plate (121).

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