Non-submerged high-pressure aeration cavitation jet test device with adjustable structure

Abstract

The invention relates to the technical field of cavitation jet testing, in particular to a non-submerged high-pressure aeration cavitation jet testing device with an adjustable structure, which comprises a nozzle and a connecting frame connected with a main body, at least three deformable baffles are arranged on the connecting frame, and the baffles are in sliding fit with the connecting frame; an adjusting mechanism for controlling the baffle to move is arranged on the connecting frame; in the process that the baffles are driven by the adjusting mechanism to move, after the adjacent baffles make contact, the baffles deform under the extrusion effect and are attached to each other. The function of adjusting the caliber of the nozzle is achieved, the effect of enlarging the adjusting range is achieved, and the sealing performance of the nozzle is guaranteed while the caliber is adjusted. And after the adjustment range is widened, more control groups are obtained, so that more perfect test data are obtained, and the test accuracy is improved. The problem that the test range is limited due to the fact that the adjusting range of an existing caliber-adjustable nozzle is small is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cavitating jet testing, and specifically to a non-submerged high-pressure aerated cavitating jet testing device with an adjustable structure. Background Art

[0002] Cavitating jets utilize the sudden drop in pressure generated when high-speed fluids (water or other media) pass through a nozzle, causing local vaporization of the fluid to form cavities (cavitation bubbles). When the cavities move with the fluid to a high-pressure area, they quickly collapse, releasing instantaneous high temperature, high pressure, and micro-jet impact force, thereby enhancing the destructive or cleaning ability of the jet. Non-submerged cavitating jets are a new type of two-phase jet that generates a large number of cavities inside the jet through artificial means to enhance the jet's effect. When the cavitating jet contacts the target object, the cavities collapse, and the chemical and mechanical effects accompanying the cavity collapse bring huge destructive power. Therefore, this technology can be effectively applied to ship rust removal, industrial cleaning, rock breaking, etc. In order to optimize parameters such as nozzle structure, jet pressure, and flow rate, cavitating jet tests need to be carried out. However, when the existing test devices perform multiple groups of test operations, nozzles of different calibers need to be replaced. Repeated disassembly and assembly not only take a long time and are extremely cumbersome, but also exacerbate part wear.

[0003] For this reason, Chinese Patent with the authorization announcement number CN116020671B discloses a cavitating jet testing device and a nozzle with adjustable caliber. Through the design of multiple adjustment units, nozzles of different diameters and styles can be adjusted without frequently changing the nozzle style, ensuring the special flow path while meeting different flow path sizes, making the experimental results more diverse, more comprehensive and reliable; and through different size style adjustments, the diversity of the test can be improved, and it can be better compared with the results of numerical simulation, thereby further verifying the correctness of the experiment.

[0004] The cavitation intensity of the jet generated by a non-submerged aerated cavitating jet generator is affected by structural parameters such as nozzle diameter, throat-nozzle distance, and throat length, which in turn affects its impact pressure. However, when the existing adjustable nozzles adjust the caliber, it is adjusted through the deformation ability of the rubber sealing adjustment block. However, the adjacent sealing adjustment blocks squeeze each other, which limits the expansion and contraction range of the sealing adjustment block, resulting in a small adjustment range of the nozzle and limiting the range of experimental data. Summary of the Invention

[0005] Aiming at the above problems, a non-submerged high-pressure aerated cavitating jet testing device with an adjustable structure is provided, which solves the problem that the adjustment range of the existing adjustable-caliber nozzle is small and limits the test range through the nozzle, connecting frame, and adjustment mechanism.

[0006] To solve the problems of the existing technology, the present invention provides a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure, including a nozzle and a connecting frame connected to the main body; a deformable baffle is arranged on the connecting frame, at least three baffles are provided, and the baffles are slidably matched with the connecting frame; an adjusting mechanism for controlling the movement of the baffles is arranged on the connecting frame; during the movement of the baffles driven by the adjusting mechanism, when adjacent baffles come into contact, the baffles deform under the extrusion and fit together.

[0007] Preferably, the baffle includes a main rod and a sub-rod; the main rod is slidably arranged on the connecting frame, and the main rod is in transmission connection with the adjusting mechanism; the sub-rod is slidably matched with the main rod, and the sub-rod is connected to the main rod through a tension spring.

[0008] Preferably, a sealing strip is connected to the baffle.

[0009] Preferably, the sealing strip is connected to the end of the baffle, and the sealing strip is flush with the end face of the baffle.

[0010] Preferably, the sealing strip is located between the baffle and the nozzle, and an isolation film is connected to the sealing strip.

[0011] Preferably, a sealing plate is arranged on the connecting frame, and the sealing plate is connected to the main rod.

[0012] Preferably, the adjusting mechanism includes a driving component and a transmission component; the driving component is used to drive the movement of the baffle; multiple baffles are in transmission connection through the transmission component.

[0013] Preferably, the transmission component includes a mounting seat, a first mounting ring and a second mounting ring; the mounting seat is arranged on the main rod, and a fixed shaft is arranged on the mounting seat; the first mounting ring is fixedly connected to the connecting frame, a linear guide rail is arranged on the first mounting ring, and the fixed shaft on the mounting seat is slidably matched with the linear guide rail; the second mounting ring is rotatably connected to the connecting frame, an inclined guide rail is arranged on the second mounting ring, and the fixed shaft on the mounting seat is slidably matched with the inclined guide rail.

[0014] Preferably, the driving component includes a rotary driver, a support, a rotary gear and a toothed ring; the rotary driver and the support are both arranged on the connecting frame; a rotating shaft is rotatably arranged on the support, the rotating shaft is in transmission connection with the driving end of the rotary driver, and the rotary gear is sleeved on the rotating shaft; the toothed ring is sleeved on the second mounting ring, and the rotary gear is meshed with the toothed ring.

[0015] Preferably, the driving component includes a linear driver, the linear driver is installed on the connecting frame; a push plate is connected to the driving end of the linear driver, and the push plate is connected to the main rod.

[0016] The beneficial effects of the present invention compared with the existing technology are:

[0017] 1. The present invention realizes the function of adjusting the nozzle diameter through the main body, the connecting frame and the adjusting mechanism. Through the cooperation of the baffle plate with deformation performance, the effect of improving the adjustment range is achieved, and the sealing performance of the nozzle is ensured while adjusting the diameter. After increasing the adjustment range, more control groups are obtained, so as to obtain more complete test data, thereby improving the test accuracy. When adjusting the nozzle diameter, when the baffle plate moves, adjacent baffle plates will come into contact, and then deform under the extrusion effect, increasing the adjustment range of the nozzle diameter. It solves the problem that the adjustment range of the existing adjustable-diameter nozzle is small and restricts the test range.

[0018] 2. The present invention realizes the function of the baffle plate deforming automatically under pressure through the main rod and the auxiliary rod. When there is an overlapping part between adjacent baffle plates, an extrusion effect will be generated. At this time, the auxiliary rods of adjacent baffle plates squeeze each other, and the tension spring stretches under the pressure, and the auxiliary rod slides relative to the main rod. At this time, the main rod continues to move under the control of the adjusting mechanism. As the main rod continues to move, more auxiliary rods abut against each other and stop moving. Then the effect of adjusting the nozzle diameter is achieved.

[0019] 3. The present invention realizes the function of improving the sealing performance at the abutting part of the baffle plate through the sealing strip. When reducing the nozzle diameter, the main rod is controlled by the adjusting mechanism to move towards the direction close to the nozzle axis, and then the auxiliary rod is pulled by the main rod to move. When the auxiliary rods on adjacent main rods contact and are blocked from moving, the main rod continues to move, and the tension spring stretches under the pulling force. At this time, only the sliding of the auxiliary rod causes deformation, and there will be a leakage gap at the abutting auxiliary rods, affecting the performance of the nozzle. For this reason, a deformable sealing strip is provided on the baffle plate, and the sealing strip is made of rubber. When an extrusion effect is generated between adjacent baffle plates, the sealing strip will deform under the extrusion effect, and then the sealing strips on adjacent two baffle plates squeeze and deform each other to improve the sealing performance at the connection, reduce the leakage situation, and further improve the test accuracy. Description of the Drawings

[0020] Figure 1 is a three-dimensional schematic diagram of the first embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0021] Figure 2 is a three-dimensional schematic diagram of the baffle plate and the nozzle of the first embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0022] Figure 3 is a three-dimensional schematic diagram of the baffle plate of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0023] Figure 4 is a three-dimensional schematic diagram of the baffle plate and the nozzle of the second embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0024] Figure 5 It is a three-dimensional schematic diagram of the baffle and the sealing strip of the second embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0025] Figure 6 It is a three-dimensional schematic diagram of the baffle, the sealing plate and the nozzle of the third embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0026] Figure 7 It is a three-dimensional schematic diagram of the fourth embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0027] Figure 8 It is a three-dimensional exploded schematic diagram of the fourth embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0028] Figure 9 It is a three-dimensional schematic diagram of the adjusting mechanism of the fifth embodiment of a non-submerged high-pressure aerated cavitating jet test device with an adjustable structure according to the present invention.

[0029] Figure 10 It is of the present invention Figure 9 The partial enlarged schematic diagram at position A.

[0030] The reference numerals in the figure are: 1, nozzle; 2, connecting frame; 21, baffle; 211, main rod; 2111, guide bar; 212, sub-rod; 2121, guide groove; 22, support frame; 23, sealing strip; 231, isolation film; 24, sealing plate; 3, adjusting mechanism; 31, driving assembly; 311, rotary driver; 312, support; 3121, rotating shaft; 313, rotating gear; 314, toothed ring; 315, linear driver; 3151, push plate; 32, transmission assembly; 321, mounting seat; 3211, fixed shaft; 322, first mounting ring; 3221, linear guide rail; 323, second mounting ring; 3231, inclined guide rail. Detailed implementation manners

[0031] To further understand the features, technical means, and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0032] Refer to Figure 1 and Figure 2A non-submerged high-pressure aerated cavitation jet test device with an adjustable structure comprises a nozzle 1 and a connecting frame 2 connected to a main body; the connecting frame 2 is provided with a deformable baffle 21, at least three baffles 21 are provided, and the baffles 21 are slidably matched with the connecting frame 2; the connecting frame 2 is provided with an adjusting mechanism 3 for controlling the movement of the baffles 21; during the movement of the baffles 21 driven by the adjusting mechanism 3, when adjacent baffles 21 come into contact, the baffles 21 are deformed under the extrusion effect and fit each other.

[0033] The present invention realizes the function of adjusting the caliber of the nozzle 1 through the main body, the connecting frame 2 and the adjusting mechanism 3. Through the cooperation of the baffle 21 with deformation performance, the effect of increasing the adjustment range is achieved, and the sealing of the nozzle 1 is ensured while adjusting the caliber. After the adjustment range is increased, more control groups are obtained, thereby obtaining more complete test data and improving the accuracy of the test. The problem that the adjustment range of the existing adjustable caliber nozzle is small and limits the test range is solved. A support frame 22 for supporting the nozzle 1 is provided on the connecting frame 2, and the stability of the nozzle 1 during the test is improved by the support frame 22. When adjusting the caliber of the nozzle 1, when the baffle 21 moves, the adjacent baffles 21 will come into contact, and then deform under the extrusion effect, thereby increasing the adjustment range of the caliber of the nozzle 1. In the working state, the operator first places the sample at the specified position, and then sprays a high-pressure jet through the nozzle 1 to perform a cavitation test. During the test, the jet fully develops into a high-energy gas-liquid mixed jet, and a large number of cavitations are mixed in the liquid medium, which quickly collapse under the action of environmental pressure, releasing strong impact pressure; after being ejected for a certain distance, the jet energy gradually decays, and the cavitations in the liquid gradually precipitate and dissolve, and flow into the water tank. The operator controls the movement of the baffle 21 through the adjustment mechanism 3, adjusts the caliber of the nozzle 1, and records the test data according to the caliber of the nozzle 1, obtains the best nozzle 1 caliber and jet pressure, and optimizes the cavitation effect.

[0034] Reference Figures 1 - 3 : The baffle 21 includes a main rod 211 and a secondary rod 212; the main rod 211 is slidably disposed on the connecting frame 2, and the main rod 211 is transmission-connected to the adjustment mechanism 3; the secondary rod 212 slides with the main rod 211, and the secondary rod 212 is connected to the main rod 211 via a tension spring.

[0035] The present invention realizes the function of automatic deformation of the baffle 21 under pressure through the main rod 211 and the auxiliary rod 212. Guide bars 2111 are provided on both sides of the main rod 211, and guide grooves 2121 which are slidably matched with the guide bars 2111 are formed on the auxiliary rod 212. When there is an overlapping part between adjacent baffles 21, an extrusion effect will occur. At this time, the auxiliary rods 212 of adjacent baffles 21 are mutually extruded, the tension spring is elongated under the pressure, and the auxiliary rod 212 slides relative to the main rod 211. At this time, the main rod 211 continues to move under the control of the adjusting mechanism 3. As the main rod 211 continues to move, more auxiliary rods 212 abut against each other and stop moving. Then the effect of adjusting the aperture of the nozzle 1 is achieved. After the test is completed, the main rod 211 is controlled by the adjusting mechanism 3 to reset. During the reset process of the main rod 211, the auxiliary rod 212 mounted on the main rod 211 is separated from the auxiliary rod 212 on the adjacent main rod 211, and then the extrusion effect is lost. The auxiliary rod 212 is reset under the elastic force of the tension spring, and then the deformation performance of the baffle 21 is maintained.

[0036] Refer to Figure 2 : A sealing strip 23 is connected to the baffle 21.

[0037] The present invention realizes the function of improving the sealing performance at the abutting part of the baffle 21 through the sealing strip 23. When reducing the aperture of the nozzle 1, the main rod 211 is controlled by the adjusting mechanism 3 to move towards the direction close to the axis of the nozzle 1, and then the auxiliary rod 212 is pulled by the main rod 211 to move. When the auxiliary rods 212 on adjacent main rods 211 contact and the movement is blocked, the main rod 211 continues to move, and the tension spring is elongated under the tensile force. At this time, only the deformation occurs through the sliding of the auxiliary rod 212, and there will be a leakage gap at the place where the mutually abutting auxiliary rods 212 are located, which affects the performance of the nozzle 1. For this reason, a deformable sealing strip 23 is provided on the baffle 21, and the sealing strip 23 is made of rubber material. When an extrusion effect occurs between adjacent baffles 21, the sealing strip 23 will deform under the extrusion effect, and then the sealing performance at the joint is improved by the mutual extrusion and deformation of the sealing strips 23 on adjacent two baffles 21, the leakage situation is reduced, and the accuracy of the test is further improved.

[0038] Refer to Figure 2 : The baffle 21 is connected to the end of the sealing strip 23, and the sealing strip 23 is flush with the end face of the baffle 21.

[0039] As the first embodiment of the present invention, the function of using the sealing strip 23 to replace the baffle 21 for abutting is realized by arranging the sealing strip 23 at the end of the baffle 21. By arranging the sealing strip 23 at the end of the baffle 21 close to the axis of the nozzle 1, when adjacent baffles 21 abut against each other, the sealing strip 23 is used to replace the baffle 21 for abutting. While improving the sealing performance, it can avoid the mutual abutting of the auxiliary rods 212 of adjacent baffles 21, thereby reducing the wear of the auxiliary rods 212 and improving the service life of the parts.

[0040] Reference Figure 4 and Figure 5 : The sealing strip 23 is located between the baffle 21 and the nozzle 1, and an isolation film 231 is connected to the sealing strip 23.

[0041] As a second embodiment of the present invention, the function of improving the docking flexibility of the sealing strip 23 is achieved by arranging the sealing strip 23 between the baffle 21 and the nozzle 1. The isolation membrane 231 is elastic, and the isolation membrane 231 is connected to the main rod 211 and the auxiliary rod 212. When the baffle 21 is deformed, the isolation membrane 231 is stretched under the action of elastic force, thereby maintaining the sealing of the isolation membrane 231, and the strength of the overall structure can be improved by the support of the main rod 211 and the auxiliary rod 212. By connecting the main rod 211 and the auxiliary rod 212 with the sealing strip 23, the effect of using the main rod 211 and the auxiliary rod 212 to support the isolation membrane 231 is achieved. The tight fit of adjacent sealing strips 23 achieves the effect of improving the sealing of the baffle 21, and after adjusting the caliber, the sealing strip 23 is more tightly combined.

[0042] Reference Figure 6 : A sealing plate 24 is provided on the connecting frame 2, and the sealing plate 24 is connected to the main rod 211.

[0043] As the third embodiment of the present invention, the function of improving the sealing performance of the baffle 21 is achieved by setting the sealing plate 24. When the adjustment mechanism 3 drives the baffle 21 to move, the baffle 21 is deformed under the extrusion action, but due to the non-completely fitting area on the mating surface of the adjacent baffles 21, a local gap may be caused, thereby affecting the adjustment accuracy of the nozzle 1 caliber. For this reason, a sealing plate 24 linked to the baffle 21 is added: among the four baffles 21, two sealing plates 24 are symmetrically distributed at the connection between the main rod 211 of the upper and lower baffles 21. In the process of the adjustment mechanism 3 controlling the movement of the main rod 211, the main rod 211 synchronously pulls the sealing plate 24 to move, so that the sealing plate 24 covers the joint interface of the adjacent secondary rod 212. Through the rigid support and dynamic compensation of the sealing plate 24, the gap interference caused by the deformation of the baffle 21 is eliminated, thereby enhancing the overall sealing performance of the baffle 21 assembly, and ensuring the geometric accuracy of the jet channel and the reliability of the test data during the adjustment of the nozzle 1 caliber. The sealing plate 24 shields the connection between the mutually abutting auxiliary rods 212, thereby improving the overall sealing performance of the baffle 21 and ensuring the accuracy of the caliber adjustment of the nozzle 1.

[0044] Reference Figure 1 and Figure 7 : The adjustment mechanism 3 includes a driving assembly 31 and a transmission assembly 32; the driving assembly 31 is used to drive the baffle 21 to move; and the plurality of baffles 21 are connected by the transmission assembly 32.

[0045] The present invention realizes the function of synchronously driving the movement of multiple baffles 21 through the driving component 31 and the transmission component 32. A controller for human-computer interaction is provided on the connecting frame 2, and the driving component 31 is electrically connected to the controller. During operation, the controller outputs a driving instruction to the driving component 31, triggering it to act on the first-end baffle 21 to generate an initial displacement. Subsequently, the transmission component 32 distributes the displacement amount proportionally to the remaining baffles 21 through a linkage effect, enabling each baffle 21 to perform radial expansion and contraction in a state of synchronous angle and linear velocity, thereby precisely regulating the jet cross-sectional diameter of the nozzle 1. This synchronous closed-loop mechanism can ensure the uniformity of the adjustment of the geometric parameters of the nozzle 1, obtain a differential jet cavitation characteristic dataset through high-precision multi-stage diameter matching, provide a multi-dimensional experimental basis for optimizing jet parameters, and improve data accuracy by obtaining more experimental data.

[0046] Refer to Figure 7 、 Figure 9 and Figure 10 : The transmission component 32 includes a mounting seat 321, a first mounting ring 322, and a second mounting ring 323; the mounting seat 321 is arranged on the main rod 211, and a fixed shaft 3211 is provided on the mounting seat 321; the first mounting ring 322 is fixedly connected to the connecting frame 2, a linear guide rail 3221 is provided on the first mounting ring 322, and the fixed shaft 3211 on the mounting seat 321 is slidably matched with the linear guide rail 3221; the second mounting ring 323 is rotatably connected to the connecting frame 2, an inclined guide rail 3231 is provided on the second mounting ring 323, and the fixed shaft 3211 on the mounting seat 321 is slidably matched with the inclined guide rail 3231.

[0047] The present invention realizes the function of controlling the synchronous movement of multiple main rods 211 through the mounting seat 321, the first mounting ring 322, and the second mounting ring 323. The linear guide rail 3221 extends along the radial direction of the nozzle 1, and the included angle between the inclined guide rail 3231 and the linear guide rail 3221 is an acute angle. There are four linear guide rails 3221 and inclined guide rails 3231, and the four linear guide rails 3221 and inclined guide rails 3231 are respectively matched with the four fixed shafts 3211. In the working state, the controller outputs an instruction signal to the driving component 31, and after the driving component 31 responds, it drives the main rod 211 to trigger an axial displacement. The main rod 211 drives the mounting seat 321 and the fixed shaft 3211 to slide along the linear guide rail 3221, and the sliding fit between the fixed shaft 3211 and the inclined guide rail 3231 converts the linear displacement into the circumferential rotation torque of the second mounting ring 323; when the second mounting ring 323 rotates, the inner wall surface of its inclined guide rail 3231 pushes the remaining fixed shafts 3211 to move in the reverse direction, and the rigid guiding constraint of the linear guide rail 3221 enables each mounting seat 321 to maintain phase synchronization during radial movement. Furthermore, the diameter of the nozzle 1 is accurately adjusted, and the proportional expansion and contraction control of multiple groups of main rods 211 is realized, thereby performing high-precision dynamic calibration on the jet cross-section of the nozzle 1 and ensuring the geometric matching degree between the test condition and the theoretical model.

[0048] Refer to Figure 7 and Figure 8 : The driving assembly 31 includes a rotary driver 311, a support 312, a rotary gear 313 and a toothed ring 314; both the rotary driver 311 and the support 312 are arranged on the connecting frame 2; a rotating shaft 3121 is rotatably arranged on the support 312, and the rotating shaft 3121 is in transmission connection with the driving end of the rotary driver 311, and the rotary gear 313 is sleeved on the rotating shaft 3121; the toothed ring 314 is sleeved on the second mounting ring 323, and the rotary gear 313 is meshed with the toothed ring 314.

[0049] As the fourth embodiment of the present invention, the function of driving the second mounting ring 323 to rotate is realized by the rotary driver 311, the support 312, the rotary gear 313 and the toothed ring 314. The rotary driver 311 is preferably a servo motor, and the servo motor is electrically connected to the controller. In the working state, the controller sends a signal to the rotary driver 311. After receiving the signal, the rotary driver 311 drives the rotating shaft 3121 to rotate. The rotating shaft 3121 drives the rotary gear 313 to rotate. The rotary gear 313 drives the toothed ring 314 meshed with it to rotate. The toothed ring 314 drives the second mounting ring 323 to rotate. The second mounting ring 323 drives the inclined guide rail 3231 to rotate, and then pushes the mounting shaft to move along the linear guide rail 3221 through the four inclined guide rails 3231. The function of controlling the synchronous movement of multiple main rods 211 is achieved.

[0050] Refer to Figure 7 , Figure 9 and Figure 10 : The driving assembly 31 includes a linear driver 315. The linear driver 315 is installed on the connecting frame 2; a push plate 3151 is connected to the driving end of the linear driver 315, and the push plate 3151 is connected to the main rod 211.

[0051] As the fifth embodiment of the present invention, the function of driving one of the main rods 211 to move is realized by the linear driver 315 and the push plate 3151. The linear driver 315 is preferably a linear cylinder, and the linear driver 315 is electrically connected to the controller. In the working state, the controller sends a signal to the linear driver 315. After receiving the signal, the linear driver 315 drives the push plate 3151 to move. The push plate 3151 drives the main rod 211 to move. The main rod 211 drives the mounting seat 321 and the fixed shaft 3211 to move. The mounting seat 321 and the fixed shaft 3211 push the second mounting ring 323 to rotate. The second mounting ring 323 pushes the fixed shafts 3211 on other main rods 211 to move, and then controls the synchronous expansion and contraction of other main rods 211. Adjust the diameter of the nozzle 1.

[0052] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope 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 modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A non-submerged high-pressure aerated cavitating jet test device with an adjustable structure, characterized in that, It includes a nozzle and a connecting frame connected to the main body; The connecting frame is provided with a deformable baffle, at least three baffles are provided, and the baffles are slidably matched with the connecting frame; The connecting frame is provided with an adjusting mechanism for controlling the movement of the baffle; When the baffles are driven by the adjusting mechanism to move, when adjacent baffles come into contact, the baffles are deformed and fit together under the extrusion effect.

2. An adjustable structure non-submerged high-pressure aerated cavitating jet test device according to claim 1, characterized in that, The baffle includes a main rod and a secondary rod; The main rod is slidably arranged on the connecting frame, and the main rod is transmission-connected with the adjusting mechanism; The auxiliary rod is slidably matched with the main rod, and the auxiliary rod is connected to the main rod through a tension spring.

3. An experimental device for a non-submerged high-pressure aerated cavitating jet with an adjustable structure according to claim 2, characterized in that, A sealing strip is connected to the baffle.

4. An adjustable-structure non-submerged high-pressure aerated cavitation jet test device according to claim 3, characterized in that, The baffle plate is connected to the end of the sealing strip, and the sealing strip is flush with the end surface of the baffle plate.

5. An adjustable-structure non-submerged high-pressure aerated cavitating jet test device according to claim 3, characterized in that, The sealing strip is located between the baffle plate and the nozzle, and an isolation film is connected to the sealing strip.

6. An adjustable-structure non-submerged high-pressure aerated cavitating jet test device according to claim 2, characterized in that, A sealing plate is arranged on the connecting frame, and the sealing plate is connected to the main rod.

7. An adjustable-structure non-submerged high-pressure aerated cavitating jet test device according to claim 2, characterized in that The regulating mechanism includes a driving assembly and a transmission assembly; The driving assembly is used for driving the baffle to move; The plurality of baffles are connected in transmission via a transmission assembly.

8. An adjustable-structure non-submerged high-pressure aerated cavitating jet test device according to claim 7, characterized in that, The transmission assembly includes a mounting seat, a first mounting ring and a second mounting ring; The mounting seat is arranged on the main rod, and a fixed shaft is arranged on the mounting seat; The first mounting ring is fixedly connected to the connecting frame, a linear guide rail is arranged on the first mounting ring, and a fixed shaft on the mounting seat is slidably matched with the linear guide rail; The second mounting ring is rotatably connected to the connecting frame. The second mounting ring is provided with an inclined guide rail. The fixed shaft on the mounting seat is slidably matched with the inclined guide rail.

9. An adjustable structure non-submerged high-pressure aerated cavitation jet test device according to claim 8, characterized in that, The drive assembly includes a rotary drive, a support, a rotary gear and a gear ring; The rotary drive and the support are both arranged on the connecting frame; A rotating shaft is rotatably arranged on the support, the rotating shaft is drivingly connected to the driving end of the rotating driver, and the rotating gear is sleeved on the rotating shaft; The gear ring is sleeved on the second mounting ring, and the rotating gear is meshedly connected with the gear ring.

10. An adjustable structure non-submerged high-pressure aerated cavitating jet test device according to claim 8, characterized in that, The driving assembly includes a linear drive, which is mounted on a connecting frame; A push plate is connected to the driving end of the linear actuator, and the push plate is connected to the main rod.

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