Ultrasonic cavitation structure and phased array ultrasonic device thereof

Abstract

The invention discloses an ultrasonic cavitation structure and a phased array ultrasonic device thereof.The ultrasonic cavitation structure comprises a cavitation resonant cavity body, the cavitation resonant cavity body is cylindrical, the thickness of the cavity wall is uniform, flange connecting faces are arranged at the two ends of the cavitation resonant cavity body, sealing grooves are formed in the two ends of the cavitation resonant cavity body, a cooling jacket is welded to the outer side of the cavitation resonant cavity body, and the cavitation resonant cavity body is a core installation carrier; the tail end of the single-stage amplitude-change pole extends into an inner hole of the cavitation resonant cavity body and is used for transmitting and amplifying ultrasonic vibration, the signal regulation and control module, the cavitation monitoring and feedback module and the comprehensive guarantee module are further included, and unified scheduling and cooperative work are achieved through an external main control unit by means of the signal regulation and control module, the cavitation monitoring and feedback module and the comprehensive guarantee module. All the modules perform their own functions and cooperate with each other, the automation degree and the overall reliability of device operation are improved, meanwhile, all the function modules are independently designed, a single module can be upgraded or replaced according to actual processing requirements, the overall structure of the device does not need to be changed, and the adaptability and the later expansion capacity of the device are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic technology, and in particular to an ultrasonic cavitation structure and a phased array ultrasonic device thereof. BACKGROUND

[0002] The ultrasonic cavitation technology is widely used in medium processing in many fields, and its core relies on the generation and collapse of cavitation bubbles to release energy and achieve processing effect. However, the existing devices have many technical shortcomings: the flow field uniformity in the cavitation resonance cavity is poor, and the cavitation bubbles are prone to local concentration or sparseness, resulting in uneven processing effect; the energy loss is large in the process of ultrasonic vibration transmission, and the unreasonable layout of the transducer causes uneven vibration output; there is a lack of phased array control ability, and it is difficult to flexibly adjust the ultrasonic parameters according to different processing scenes; there is no real-time cavitation effect monitoring and feedback mechanism, and the processing process cannot be dynamically optimized; the cooling structure has low heat exchange efficiency, and high temperature easily affects the performance and processing stability of the components; the module integration is high, and the overall structure needs to be changed for upgrading and replacement, so the adaptability and later expansion ability are weak, and it is difficult to meet the processing requirements of high efficiency, precision and stability.

[0003] Therefore, we propose an ultrasonic cavitation structure and a phased array ultrasonic device thereof. SUMMARY

[0004] The present application aims to provide an ultrasonic cavitation structure and a phased array ultrasonic device thereof, and the core requirements include: optimizing the flow field and cavitation bubble state in the cavity, realizing uniform distribution of cavitation bubbles and energy enhancement through flow disturbance and secondary breaking design; adopting coaxial assembly layout to reduce vibration energy loss and improve transmission efficiency; constructing a phased array control system to realize precise adjustment of ultrasonic frequency and phase, adapt to diversified processing scenes; building a cavitation effect and temperature double-monitoring feedback closed loop to dynamically optimize operating parameters; upgrading the cooling structure to improve heat exchange efficiency and ensure system temperature stability; adopting modular independent design to facilitate single module upgrading and replacement, and enhance adaptability and expansion ability; and finally achieving the use goal of efficient and uniform processing, precise control, stable operation and convenient expansion.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] The cavitation resonance cavity body is cylindrical, the cavity wall thickness is uniform, the two ends are provided with flange connecting surfaces and sealing grooves, and the outer side is welded with a cooling jacket, which is a core installation carrier.

[0007] As a further scheme of the present application: a single-stage amplitude transformer, the single-stage amplitude transformer extends into the inner hole of the cavitation resonance cavity body, and is used for transmitting and amplifying ultrasonic vibration.

[0008] As a further scheme of the present application: the piezoelectric ceramic transducer group comprises a plurality of disc-shaped units uniformly pasted on the outer periphery of the front end of the single-stage amplitude transformer, and electrode leads are directly connected to an external driving system to serve as an ultrasonic vibration source.

[0009] As a further scheme of the present application: single-layer micro-hole spoiler plates are arranged on both sides of the inner wall of the cavitation resonance cavity body and are fixed on both sides of the inner wall of the cavitation resonance cavity body through positioning pins, for disturbing the flow field and uniformly distributing cavitation bubbles.

[0010] As a further scheme of the present application: a cavitation bubble breaking grid is arranged at the center of the inner wall of the cavitation resonance cavity body, the cavitation bubble breaking grid is in a cross-shaped mesh structure, and is clamped at the center of the inner wall of the cavitation resonance cavity body through elastic clamping claws, for secondary breaking of cavitation bubbles.

[0011] As a further scheme of the present application: a heat exchange pipe is arranged at the outlet end of the cavitation resonance cavity body, a semi-enclosed cooling jacket is arranged on the surface of the heat exchange pipe, the semi-enclosed cooling jacket is welded to the outer wall of the cavitation resonance cavity body, and a temperature sensor is further arranged on one side of the semi-enclosed cooling jacket and screwed to the cooling jacket.

[0012] As a further scheme of the present application: the cavitation resonance cavity body is coaxially arranged as a whole, the single-stage amplitude transformer and the single-layer micro-hole spoiler plate are coaxially arranged with the cavitation resonance cavity body as the center, the units of the piezoelectric ceramic transducer group are uniformly distributed along the outer periphery of the single-stage amplitude transformer in a ring shape, the spacing between adjacent units is consistent, and the central axis of the single-layer micro-hole spoiler plate coincides with the central axis of the cavitation resonance cavity body.

[0013] As a further scheme of the present application: the signal regulation module comprises a signal source module, a phase / frequency adjustment unit and a power amplification unit, the signal source module is used to generate a high-frequency sinusoidal wave, the phase / frequency adjustment unit has frequency adjustment and multi-phase adjustment functions, and the power amplification unit is connected to the piezoelectric ceramic transducer group to realize ultrasonic signal regulation and vibration output.

[0014] As a further scheme of the present application: the cavitation monitoring and feedback module comprises a cavitation intensity sensor, a data acquisition module and a main control unit, the cavitation intensity sensor is arranged at the outlet of the cavitation resonance cavity body, the data acquisition module is connected to the cavitation intensity sensor and the main control unit, and the main control unit is sequentially connected to the phase / frequency adjustment unit and the signal source module, for real-time monitoring of cavitation effect and feedback adjustment of ultrasonic parameters.

[0015] As a further scheme of the present application: the comprehensive guarantee module, the main control unit is connected to a temperature sensor and a cooling pump, the cooling pump can be started when the temperature exceeds a set threshold value and stopped when the temperature is below the threshold value, and the main control unit can monitor the system state and realize fault alarm or normal operation control.

[0016] As a further aspect of the present invention, the signal control module, cavitation monitoring and feedback module, and integrated support module are coordinated and controlled by an external main control unit.

[0017] Compared with the prior art, the present invention provides an ultrasonic cavitation structure and its phased array ultrasonic device, which has the following beneficial effects:

[0018] 1. The present invention uses the cavitation resonant cavity as the core of the coaxial assembly layout to ensure that all functional components are arranged coaxially, effectively reducing the energy loss of ultrasonic vibration during transmission and significantly improving the vibration energy transmission efficiency. At the same time, this layout makes the assembly and positioning of each component of the device more precise, simplifies the overall assembly process, and reduces the difficulty of subsequent component replacement and maintenance.

[0019] 2. In this invention, single-layer microporous baffles arranged coaxially on both sides of the inner wall of the cavity are securely installed by positioning pins. Their microporous structure can divert and disturb the flowing medium, breaking the limitations of the uniformity of the flow field and promoting the uniform distribution of cavitation bubbles inside the resonant cavity. This avoids situations where local cavitation bubbles are too dense or sparse. The cross-shaped mesh cavitation bubble breaking grid at the center of the resonant cavity is fixed by elastic claws, which can forcibly cut the passing cavitation bubbles, realize the secondary breaking of cavitation bubbles, make the cavitation bubbles smaller, and release more energy when they collapse, thus greatly enhancing the treatment effect of ultrasonic cavitation.

[0020] 3. In this invention, the piezoelectric ceramic transducer assembly is composed of multiple circular units. Each unit is evenly distributed in a ring around the outer periphery of the front end of the single-stage amplitude transformer, and the spacing between adjacent units is consistent. This layout allows the ultrasonic vibration generated by the transducer to act uniformly on the amplitude transformer. Combined with the phase / frequency adjustment unit of the signal control module, precise adjustment of multiple phases and frequencies can be achieved, thereby realizing phased array ultrasonic vibration output. This not only ensures the uniformity of vibration output, but also allows for flexible adjustment of vibration parameters according to different processing scenarios, enhancing the device's scenario adaptability.

[0021] 4. In this invention, a cavitation intensity sensor and a temperature sensor form a dual monitoring module. The cavitation intensity sensor is located at the outlet of the resonant cavity to collect cavitation effect data in real time. The temperature sensor is threadedly installed on one side of the semi-enclosed cooling jacket to collect system temperature data in real time. The two data streams are transmitted to the main control unit via the data acquisition module. Based on the collected data, the main control unit synchronously sends control commands to the ultrasonic parameter adjustment system and the cooling system, and provides feedback to adjust the frequency and phase parameters of the ultrasonic signal and the start / stop status of the cooling pump, thereby realizing closed-loop control of the device operation.

[0022] 5. The present invention features a semi-enclosed cooling jacket design that fits snugly against the surface of the heat exchange tube. Compared with traditional cooling structures, this design significantly increases the heat exchange area and improves heat exchange efficiency. It can quickly remove the heat generated during the operation of the device, preventing excessively high temperatures from affecting component performance and processing results. The temperature sensor adopts a threaded installation method, eliminating the need for additional auxiliary fixing structures. The disassembly and assembly process is simple and quick, and it is also convenient to periodically calibrate the sensor, ensuring the accuracy and reliability of temperature monitoring data.

[0023] 6. In this invention, the signal control module, cavitation monitoring and feedback module, and integrated support module are uniformly scheduled and work collaboratively through an external main control unit. Each module performs its own function while cooperating with each other, improving the automation level and overall reliability of the device operation. At the same time, each functional module adopts an independent design, and individual modules can be upgraded or replaced according to actual processing needs without changing the overall structure of the device, thus enhancing the adaptability and future expansion capabilities of the device.

[0024] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0025] Fig. 1 This is a schematic diagram of the overall structure of an ultrasonic cavitation structure proposed in this invention;

[0026] Fig. 2 This is a schematic cross-sectional view of an ultrasonic cavitation structure proposed in this invention.

[0027] Fig. 3 This is a three-dimensional structural diagram of a heat exchange tube with an ultrasonic cavitation structure proposed in this invention.

[0028] Fig. 4 This is a flowchart of the ultrasonic signal generation and phased control process of the phased array ultrasonic device proposed in this invention.

[0029] Fig. 5 This is a flowchart of the cavitation effect monitoring and feedback process of the phased array ultrasonic device proposed in this invention.

[0030] Fig. 6 This is a flowchart of the integrated support system for the phased array ultrasonic device proposed in this invention.

[0031] In the figure: 1. Cavitation resonant cavity body; 2. Single-stage amplitude transformer; 3. Piezoelectric ceramic transducer assembly; 4. Single-layer microporous baffle plate; 5. Cavitation bubble breaking grid; 6. Heat exchange tube; 7. Semi-enclosed cooling jacket; 8. Temperature sensor. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Example: An ultrasonic cavitation structure and its phased array ultrasonic device, such as Figs. 1-3 As shown, the cavitation resonant cavity body 1 is cylindrical with uniform cavity wall thickness. It has flange connection surfaces at both ends and sealing grooves. A cooling jacket is welded to the outside, serving as the core mounting carrier. The single-stage amplitude transformer 2 extends into the inner hole of the cavitation resonant cavity body 1 to transmit and amplify ultrasonic vibrations. The piezoelectric ceramic transducer group 3 contains multiple circular units, which are uniformly pasted on the outer periphery of the front end of the single-stage amplitude transformer 2. The electrode leads are directly connected to the external drive system, serving as the ultrasonic vibration source.

[0035] like Figs. 1-3As shown, single-layer microporous baffles 4 are provided on both sides of the inner wall of the cavitation resonant cavity body 1, and are fixed to both sides of the inner wall of the cavitation resonant cavity body 1 by positioning pins. They are used to turbulent the flow field and make the cavitation bubbles evenly distributed. A cavitation bubble breaking grid 5 is provided at the center of the inner wall of the cavitation resonant cavity body 1. The cavitation bubble breaking grid 5 is a cross-shaped mesh structure and is snapped into the center of the inner wall of the cavitation resonant cavity body 1 by elastic claws for secondary breaking of cavitation bubbles. A heat exchange tube 6 is provided at the outlet end of the cavitation resonant cavity body 1. A semi-enclosed cooling jacket 7 is provided on the surface of the heat exchange tube 6. The jacket 7 is welded to the outer wall of the cavitation resonant cavity body 1. A temperature sensor 8, threaded onto the cooling jacket 7, is also provided on one side of the semi-enclosed cooling jacket 7. The cavitation resonant cavity body 1 is arranged in a coaxial configuration, with the single-stage amplitude transformer 2 and the single-layer microporous baffle 4 arranged coaxially around the cavitation resonant cavity body 1. Each unit of the piezoelectric ceramic transducer group 3 is evenly distributed in a ring around the outer periphery of the single-stage amplitude transformer 2, with consistent spacing between adjacent units. The central axis of the single-layer microporous baffle 4 coincides with the central axis of the cavitation resonant cavity body 1. The coaxial assembly layout is centered on the cavitation resonant cavity body 1. With the main body 1 as the core, all functional components are arranged coaxially, effectively reducing energy loss during ultrasonic vibration transmission and significantly improving vibration energy transmission efficiency. This layout also allows for more precise assembly and positioning of each component, simplifying the overall assembly process and reducing the difficulty of later component replacement and maintenance. Single-layer microporous baffles 4, coaxially arranged on both sides of the inner wall of the cavity, are securely installed using positioning pins. Their microporous structure can divert and disturb the flowing medium, breaking the limitations of flow field uniformity and promoting uniform distribution of cavitation bubbles within the resonant cavity, preventing excessive local cavitation bubbles. In both dense and sparse environments, the cross-shaped mesh cavitation bubble breaking grid 5 at the center of the resonant cavity is fixed by elastic claws, which can forcibly cut the passing cavitation bubbles, achieving secondary breaking of the cavitation bubbles, making the cavitation bubbles smaller and releasing more energy when they collapse, thus greatly enhancing the ultrasonic cavitation treatment effect. The piezoelectric ceramic transducer group 3 is composed of multiple circular units, each unit is evenly distributed in a ring around the outer periphery of the front end of the single-stage amplitude transformer 2, and the spacing between adjacent units is consistent. This layout allows the ultrasonic vibration generated by the transducer to act evenly on the amplitude transformer. Combined with the phase / frequency adjustment unit of the signal control module, it can achieve precise adjustment of multiple phases and frequencies, thereby realizing phased array ultrasonic vibration output. This not only ensures the uniformity of vibration output, but also allows for flexible adjustment of vibration parameters according to different processing scenarios, enhancing the device's scenario adaptability.

[0036] like Figs. 3-6As shown, the system includes a signal control module, a cavitation monitoring and feedback module, and a comprehensive support module. The signal control module comprises a signal source module, a phase / frequency adjustment unit, and a power amplification unit. The signal source module generates a high-frequency sine wave. The phase / frequency adjustment unit has frequency adjustment and multi-channel phase adjustment functions. The power amplification unit is connected to the piezoelectric ceramic transducer group 3 to achieve ultrasonic signal control and vibration output. The cavitation monitoring and feedback module includes a cavitation intensity sensor, a data acquisition module, and a main control unit. The cavitation intensity sensor is located at the outlet of the cavitation resonant cavity body 1. The data acquisition module connects the cavitation intensity sensor to the main control unit. The main control unit is sequentially connected to the phase / frequency adjustment unit and the signal source module, used for real-time monitoring of the cavitation effect and feedback adjustment of ultrasonic parameters. The integrated support module, with its main control unit connected to temperature sensor 8 and the cooling pump, can start the cooling pump when the temperature exceeds a set threshold and stop it when the temperature falls below the threshold. It can also monitor system status and provide fault alarms or normal operation control. The signal control module, cavitation monitoring and feedback module, and integrated support module achieve coordinated control through an external main control unit. These modules are also uniformly scheduled and work collaboratively, each performing its own function while cooperating with each other, improving the automation level and overall reliability of the device. Furthermore, each functional module is designed independently, allowing for upgrades or replacements of individual modules based on actual processing needs without altering the overall device structure, thus enhancing the device's adaptability and future expansion capabilities.

[0037] Working principle: The signal source module generates a high-frequency sine wave signal with a preset frequency. The phase / frequency adjustment unit performs multi-channel phase and frequency precise adjustment on the signal. The power amplification unit amplifies the adjusted weak electrical signal into a strong electrical signal that meets the driving requirements. The amplified signal is transmitted to the annularly distributed piezoelectric ceramic transducer group 3 to drive each circular unit to generate ultrasonic vibration synchronously. The single-stage amplitude transformer 2 receives the ultrasonic vibration of the transducer group and transmits it axially. After amplification, it is input into the inner hole of the cavitation resonant cavity body 1. The vibration energy acts on the medium flowing through the cavity, causing a large number of cavitation bubbles to be generated inside the medium. When the medium flows through the single-layer microporous baffles 4 on both sides of the inner wall of the cavity, the microporous structure convects. The flow is shunted and disturbed to promote the uniform distribution of cavitation bubbles in the flow field. The medium carrying the uniform cavitation bubbles flows through the cross-shaped mesh cavitation bubble breaking grid 5 at the center of the resonant cavity. The grid mesh forcibly cuts the cavitation bubbles, achieving secondary breaking. The collapse of the tiny cavitation bubbles releases stronger energy, enhancing the ultrasonic treatment effect. The cavitation intensity sensor at the outlet of the cavitation resonant cavity body 1 collects cavitation effect data in real time. The data acquisition module converts the analog signals collected by the sensor into digital signals and transmits them to the main control unit. The main control unit analyzes and processes the cavitation intensity data and then sends it to the phase / ... The frequency adjustment unit and the signal source module send control commands to adjust the frequency and phase parameters of the ultrasonic signal in real time to optimize the cavitation effect. The temperature sensor 8 on one side of the semi-enclosed cooling jacket 7 collects the surface temperature data of the heat exchange tube 6 in real time and transmits it to the main control unit. The main control unit compares the collected temperature with a preset threshold. When the temperature exceeds the threshold, the cooling pump is started to deliver cooling medium to the cooling jacket. When the temperature is below the threshold, the cooling pump is stopped. The circulating flow of the cooling medium removes the heat generated by the device operation to ensure the system temperature is stable. The comprehensive protection module monitors the operating status of each module in real time through the main control unit. When abnormal data is detected, a fault alarm mechanism is triggered. When each module is operating normally, the system is kept running stably. Each module achieves information interaction and collaborative work through unified scheduling by the external main control unit to ensure the overall efficient and stable operation of the device.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An ultrasonic cavitation structure, characterized by, It comprises: A cavitation resonance cavity body (1) which is cylindrical, has uniform cavity wall thickness, is provided with flange connecting surfaces at both ends and sealing grooves, and has a cooling jacket welded outside to serve as a core mounting carrier; A single-stage amplitude varying rod (2) which extends into the inner hole of the cavitation resonance cavity body (1) to transmit and amplify ultrasonic vibration; A piezoelectric ceramic transducer group (3) which comprises multiple disc-shaped units uniformly pasted on the outer periphery of the front end of the single-stage amplitude varying rod (2) and has electrode leads directly connected to an external driving system to serve as an ultrasonic vibration source.

2. The ultrasonic cavitation structure according to claim 1, wherein: The cavitation resonance cavity body (1) is provided with a single-layer micro-porous spoiler (4) on both sides of the inner wall, which is fixed on both sides of the inner wall of the cavitation resonance cavity body (1) by positioning pins to disturb the flow field and make cavitation bubbles uniformly distributed.

3. The ultrasonic cavitation structure of claim 1, wherein: The cavitation resonance cavity body (1) is provided with a cavitation bubble breaking grid (5) at the center of the inner wall, which is a cross-shaped mesh structure and is clamped at the center of the inner wall of the cavitation resonance cavity body (1) by elastic clamps to break cavitation bubbles twice.

4. The ultrasonic cavitation structure of claim 3, wherein: The outlet end of the cavitation resonance cavity body (1) is provided with a heat exchange pipe (6), the surface of the heat exchange pipe (6) is provided with a semi-enclosed cooling jacket (7) which is welded to the outer wall of the cavitation resonance cavity body (1), and one side of the semi-enclosed cooling jacket (7) is further provided with a temperature sensor (8) screwed to the cooling jacket.

5. The ultrasonic cavitation structure of claim 2, wherein: The cavitation resonance cavity body (1) is coaxially assembled as a whole, and the single-stage amplitude varying rod (2) and the single-layer micro-porous spoiler (4) are coaxially arranged with the cavitation resonance cavity body (1) as the center, the units of the piezoelectric ceramic transducer group (3) are uniformly distributed along the outer periphery of the single-stage amplitude varying rod (2) in a ring shape, the spacing between adjacent units is consistent, and the central axis of the single-layer micro-porous spoiler (4) coincides with the central axis of the cavitation resonance cavity body (1).

6. A phased array ultrasound apparatus comprising an ultrasonic cavitation structure as claimed in any one of claims 1-5, characterized in that, It also comprises a signal control module, a cavitation monitoring and feedback module, and a comprehensive support module.

7. The phased array ultrasound apparatus of claim 6, the signal conditioning module, wherein, It comprises a signal source module, a phase / frequency adjustment unit, and a power amplification unit, the signal source module is used to generate high-frequency sine waves, the phase / frequency adjustment unit has frequency adjustment and multi-phase adjustment functions, and the power amplification unit is connected to the piezoelectric ceramic transducer group (3) to realize ultrasonic signal control and vibration output.

8. The phased array ultrasound apparatus of claim 6, wherein, The cavitation monitoring and feedback module comprises a cavitation intensity sensor, a data acquisition module, and a main control unit, the cavitation intensity sensor is arranged at the outlet of the cavitation resonance cavity body (1), the data acquisition module is connected to the cavitation intensity sensor and the main control unit, and the main control unit is sequentially connected to the phase / frequency adjustment unit and the signal source module to monitor the cavitation effect in real time and feedback adjust the ultrasonic parameters.

9. A phased array ultrasound apparatus according to claim 8, wherein, The comprehensive support module, the main control unit is connected to the temperature sensor (8) and the cooling pump, the cooling pump is started when the temperature exceeds the set threshold and stopped when the temperature is below the threshold, and it can also monitor the system state and realize fault alarm or normal operation control.

10. The phased array ultrasound apparatus of claim 8, wherein, The signal control module, the cavitation monitoring and feedback module, and the comprehensive support module are cooperatively controlled by an external main control unit.

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