Cavitating jet peening system and method of using same

Abstract

The application discloses a cavitation jet stream shot blasting system, which comprises a central control platform, a water storage device, a water supply device, a water source treatment box, a water circulation pressurizing device, a cavitation jet stream strengthening device and a water tank. The water storage device is sequentially connected with the water supply device, the water source treatment device and the water circulation pressurizing device through pipelines. The water circulation pressurizing device is connected with the cavitation jet stream strengthening device through high and low pressure water supply pipelines. The cavitation jet stream strengthening device comprises high and low pressure water supply pipelines and a nozzle assembly. The nozzle assembly comprises a nozzle arranged at the center and an access pipe connected with the nozzle. An annular sleeve is arranged around the nozzle and the access pipe. An annular cavity is formed between the nozzle and the annular sleeve. A spiral pipe is arranged in the annular cavity and spirally arranged around the access pipe arranged in the annular cavity. The application also relates to a use method of the cavitation jet stream shot blasting system. The cavitation jet stream shot blasting system is suitable for cavitation jet stream shot blasting operations of various products and working conditions.

Description

Technical Field

[0001] This invention belongs to the field of cavitation jet technology, and specifically relates to a cavitation jet shot peening system suitable for surface strengthening operations on metal parts. This application also relates to a method of using a cavitation jet shot peening system. Background Technology

[0002] Water blasting (WCP) is a novel metal surface strengthening process. It utilizes a high-pressure water pump to propel a high-pressure water jet onto the workpiece, achieving shot peening. This process leverages the shock wave pressure generated by the collapse of tiny cavitation bubbles and the high-speed micro-jets to impact the metal surface. It achieves extremely high shot peening force (GPa) with relatively low pressure, thereby strengthening metal components. With advantages such as being environmentally friendly, highly adaptable, and producing good surface conditions on the peened materials, it is increasingly becoming a research hotspot in the field of metal surface strengthening.

[0003] In the entire shot peening process, the workpiece and the shot system are completely immersed in water. The water jet passes through a cavitation nozzle, is cavitated, and is then sprayed into the water medium and directed toward the workpiece. The most effective part of shot peening is the impact of the cavitation bubbles on the workpiece, which causes them to collapse and generate a huge impact that strikes the metal surface, causing plastic deformation and completing the shot peening process.

[0004] Conventional water blasting requires a submerged environment, which limits the application of water blasting technology because some large components cannot be immersed in water. Furthermore, current water blasting equipment has relatively limited functionality, presenting numerous inconveniences in treating different workpiece surfaces and in scientific research.

[0005] Based on the problems existing in the current technology, the problem to be solved in this application is to design a cavitation jet shot peening system that can be applied to multiple products and multiple working conditions. Summary of the Invention

[0006] The purpose of this invention is to provide a cavitation jet shot peening system that solves the problems of current cavitation jet shot peening equipment being limited by the workpiece and processing environment, unable to be applied to multiple working conditions simultaneously, having few adjustable parameters, and unstable cavitation effects. Compared to existing designs, this application can be applied to cavitation jet shot peening operations for multiple products and under multiple working conditions simultaneously.

[0007] One aspect of this application provides a cavitation jet shot peening system, including a central control platform, a water storage device, a water supply device, a water source treatment tank, a water circulation pressurization device, a cavitation jet enhancement device, and a water tank; the water storage device is sequentially connected to the water supply device, the water source treatment device, and the water circulation pressurization device via pipelines, and the water circulation pressurization device is connected to the cavitation jet enhancement device via high-pressure and low-pressure water supply pipelines; the cavitation jet enhancement device includes a high-pressure water supply pipeline, a low-pressure water supply pipeline, and a nozzle assembly connected to the high-pressure and low-pressure water supply pipelines; The nozzle assembly includes a nozzle located at the center and an access pipe connected to the nozzle. The nozzle is configured as an angled nozzle with a progressive opening shape. The nozzle is connected to a high-pressure water supply pipeline via the access pipe. An annular sleeve is installed around the nozzle and the inlet pipe, and an annular cavity is formed between the nozzle and the annular sleeve. The annular cavity is connected to the low-pressure water supply pipeline. A flow regulating valve is installed at the junction of the annular cavity and the contraction section of the annular sleeve to regulate the low-pressure water flow rate. At least one spiral tube is provided in the annular cavity. The spiral tubes are spirally distributed around the inlet pipe provided inside the annular cavity. One end of the spiral tube is connected to the low-pressure water supply pipeline, and the outlet of the other end of the spiral tube is correspondingly provided to the nozzle opening. The low-pressure spiral tubes provided on the outer periphery cooperate with the high-pressure pipeline provided in the center. When the jet is ejected from the nozzle at high speed, it generates a shearing action with the static liquid or low-speed circulation in the annular cavity to form a vortex cavitation jet.

[0008] In addition to the technical features described above, this application also makes improvements in the following aspects: In some embodiments, the water storage device is a water storage tank, which is provided with inlet and outlet water pipes; the pipes include an inlet water pipe and two outlet water pipes; wherein, one outlet water pipe is connected to a water supply device, and the other outlet water pipe is connected to a water tank; and the water tank is provided with a liquid level sensor, which is electrically connected to the central control platform for detecting the liquid level in the water tank.

[0009] In some embodiments, the water supply device includes a primary water supply pump and a secondary water supply pump; the primary water supply pump is connected to a water storage device and a water source treatment tank through a water supply pipeline, and the water in the water storage device enters the water source treatment tank after being pressurized once by the primary water supply pump. The secondary water supply pump is connected to the water source treatment tank and the filter device through the water supply pipeline. The water treated by the water source treatment tank is pressurized again by the secondary water supply pump and then connected to the water circulation pressurization device through the water supply pipeline. A secondary filter device is installed between the secondary water supply pump and the water circulation pressurization device.

[0010] In some embodiments, the water circulation booster device includes a high-pressure water jet device and a low-pressure water jet device, as well as a high-pressure water jet control system and a low-pressure water jet control system for controlling its operation; the high-pressure water jet control system and the low-pressure water jet control system are respectively electrically connected to the central control platform.

[0011] In some embodiments, the water treatment tank is equipped with a dissolved air pump and a water temperature control device; the dissolved air pump is used to increase the gas content of the water treatment tank, and the water temperature control device is used to control the water temperature of the water treatment tank. The water treatment tank is equipped with a liquid level sensor, a temperature sensor, and a dissolved gas detection device for detecting dissolved gas content. The liquid level sensor, temperature sensor, and dissolved gas detection device are electrically connected to the central control platform via communication lines to control the water volume, water temperature, and dissolved gas content in the water treatment tank.

[0012] In some embodiments, the upper part of the water tank is an open structure, and a nozzle adjustment mechanism is provided at the upper part of the opening of the open water tank. A clamping device is provided inside, and a clamping auxiliary mechanism is provided on the side wall of the water tank. The clamping device is used to clamp the workpiece.

[0013] In some embodiments, the nozzle adjustment mechanism includes a sliding mounting bracket, an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism; the X-axis drive mechanism, the Y-axis drive mechanism, and the Z-axis drive mechanism are mounted on the sliding mounting bracket and are used to drive the nozzle to move in the X, Y, and Z axis directions, respectively.

[0014] In some embodiments, the water tank is a closed water tank, which includes a tank body and a sealing cover on the upper part of the tank body. The nozzle assembly is installed inside the closed water tank and on an adjustment assembly on the upper part of the sealing cover. The adjustment assembly is used to adjust the installation distance and installation angle between the nozzle assembly and the workpiece. The sealed water tank is equipped with a clamping platform, which is correspondingly set with the nozzle assembly. The clamping platform is equipped with a sheet metal clamping mechanism and a cylindrical clamping mechanism, which are used to clamp and fix the sheet metal parts or the cylindrical parts, respectively. The clamping platform is equipped with a base at its bottom, which is installed at the bottom of the water tank, and the clamping platform is slidably installed between the base and the platform.

[0015] In some embodiments, a pressure sensor and a temperature sensor are installed inside the sealed water tank, and the pressure sensor and temperature sensor are electrically connected to the central control platform via communication lines; the pressure sensor and temperature sensor are used to detect the temperature and pressure inside the sealed water tank, and the cavitation effect of the nozzle is adjusted by regulating the pressure and temperature. In order to regulate the pressure and temperature inside the sealed water tank, the sealed water tank is connected to a pressurizing device and a temperature regulating device through a pressurizing pipeline, and the pressurizing device and the temperature regulating device are electrically connected to the central control platform.

[0016] Another aspect of this application provides a method of using the above-described cavitation jet shot peening system, comprising the following steps: Turn on the main power and start the high-pressure water supply system. The water source in the water tank is pressurized by the first-stage water supply pump and enters the water treatment tank. After pretreatment, the water source is transported by the second-stage water supply pump through the pipeline to the water circulation pressurization device. The water circulation pressurization device is connected to the nozzle assembly through high and low pressure water supply pipelines. The nozzle assembly performs cavitation jet shot peening operation in a submerged environment. Depending on the application scenario, the above-mentioned flooding environment can be set as: normal temperature and pressure flooding environment, sealed pressurized flooding environment, and artificial simulation flooding environment. (1) Normal temperature and pressure water-submerged environment During cavitation operations at normal temperature and pressure, water from an open tank is used to create a flooded environment; during cavitation jet shot peening operations, the nozzle enters the tank directly. When the temperature exceeds the preset value, the central control platform will automatically activate the temperature regulation device to ensure that the water temperature in the tank is within a certain range, so as to avoid the water temperature being too high or too low and affecting the cavitation effect. When the water level in the tank is too high, the water pressure increases. When the preset value is reached, the central control platform controls the water outlet valve to drain the water and reduce the pressure in the tank, thereby ensuring that cavitation jet shot peening operations can be carried out at normal temperature and pressure. (2) Sealed pressurized flooded environment In a pressurized environment, the water tank is sealed, the cavitation nozzle remains stationary, and the clamping platform inside the water tank moves. The sealed water tank is pressurized internally by a booster pump, which is connected to the central control platform. When the pressure in the sealed water tank does not reach the preset value, the booster pump works to increase the air pressure in the sealed water tank. As the air pressure increases, the water pressure in the sealed water tank increases, which can simulate the environment under different pressure depths. A sealed water tank can increase the water pressure inside the tank, thus increasing the pressure within the sealed tank. The water tank can be a pressure-bearing structure such as a cylinder or a sphere.

[0017] As the equipment operates, the water volume and pressure inside the sealed water tank gradually increase. A drain outlet is located at the bottom of the sealed water tank, and an air vent is located at the top. Both a digital pressure gauge and a mechanical pressure gauge are installed to detect and regulate the internal pressure of the sealed water tank. The digital pressure gauge is connected to the central control platform; when the pressure is too high, water or air can be released to reduce the tank pressure. (3) Artificial simulated flood environment Low-pressure water is introduced into the annular cavity so that the water jet generated by the external low-pressure nozzle can cover the water jet generated by the internal high-pressure nozzle. The low-pressure water flow surrounds the high-pressure cavitation water jet, forming a flooded environment. Before use, the nozzle pressure of the equipment is adjusted. When the equipment pressure reaches the preset value, cavitation jet shot peening operation is performed.

[0018] The beneficial effects of this invention are: 1. The nozzle assembly in this application adopts a combination structure of a central nozzle and an inlet pipe, with an annular sleeve set around the periphery of the nozzle and the inlet pipe, forming an annular cavity between the nozzle and the annular sleeve; through the improvement of the nozzle, the nozzle realizes the artificial submersion environment of the nozzle, which can be used to process small submerged workpieces in ordinary submersion environment, and is suitable for processing large workpieces that cannot be submerged in artificial submersion environment.

[0019] 2. This application utilizes a spiral tube installed within the annular cavity between the nozzle and the annular sleeve. The spiral tube is spirally distributed around the inlet pipe located inside the annular cavity. Through the interaction of the low-pressure spiral tube on the outer periphery and the high-pressure pipeline in the center, when the jet is ejected at high speed from the nozzle, it undergoes a shearing action with the static liquid or low-speed circulating flow within the annular cavity, forming a vortex cavitation jet. This achieves excellent cavitation jet shot peening results.

[0020] 3. The nozzle assembly of this application is designed to be suitable for operation in different external environments. The open water tank meets the requirements of workpiece immersion environment under normal temperature and pressure. The closed water tank can simulate immersion environment at different depths by internal pressurization without changing the water volume.

[0021] 4. This application features a nozzle adjustment mechanism installed at the top or inside the water tank. The movement trajectory of the nozzle or the workpiece is controlled via a central control platform, meeting the processing requirements in both open and sealed environments. No manual adjustment of the workpiece's installation position is required, making operation simple and convenient. Simultaneously, a clamping device is installed inside the water tank, allowing for the processing of products of various shapes, including cylindrical parts and sheet metal.

[0022] 5. This application incorporates multiple sensors within the water tank for detection, including pressure and temperature, enabling real-time acquisition of relevant parameters. This allows for timely adjustment of these parameters to achieve optimal cavitation jet shot peening results, resulting in a high degree of integration. This invention features digitalization, automation, and even intelligent functions. By using this equipment to shot peen material surfaces, especially metal parts, the material surface can be significantly strengthened. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0024] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the open water tank and nozzle adjustment combination structure in Embodiment 1 of this application; Figure 3 This is a cross-sectional view of the nozzle assembly in Embodiment 1 of this application; Figure 4 This is a longitudinal sectional view of the sealed water tank in Embodiment 2 of this application; The numbers in the diagram are as follows: 1. Central control platform; 2. Water storage device; 3. Water supply device; 31. Primary water supply pump; 32. Secondary water supply pump; 4. Water source treatment tank; 5. Water circulation booster device; 6. Cavitation jet enhancement device; 61. High-pressure water supply pipeline; 62. Low-pressure water supply pipeline; 63. Nozzle assembly; 631. Nozzle; 632. Inlet pipe; 7. Water tank; 8. Annular sleeve; 9. Annular cavity; 10. Flow regulating valve; 11. Nozzle adjustment mechanism; 12. Sealing cover; 13. Pressure sensor; 14. Temperature sensor; 15. Spiral tube. Detailed Implementation

[0025] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the scope of this application or its application or use. This application may be implemented in other different forms and is not limited to the embodiments described herein.

[0026] I. Explanation of descriptive terms in this application The embodiments provided in this application, in conjunction with the technical solutions, are intended to make this application more thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that, unless otherwise specifically stated in this application, the relative arrangements of components described in these embodiments should be interpreted as merely exemplary and not as a limitation on the technical solutions of this application.

[0027] In this application, the use of directional terms such as "up," "down," "left," "right," "bottom," and "top" is defined relative to the directions shown in the accompanying drawings and is used only to indicate relative positional relationships. These relative positional relationships may change accordingly when the absolute position of the described object changes. These or other directional terms should not be construed as restrictive.

[0028] In this application, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0029] Furthermore, this application does not discuss in detail the technologies and equipment known to those skilled in the art, but where appropriate, such technologies and equipment should be considered part of the specification.

[0030] The application scenario of this application is mainly based on the field of cavitation jet shot peening technology for metal surface strengthening. It can also be applied to other scenarios according to its function. Its application scenario is not constrained or limited by the specific embodiments described in this application.

[0031] II. Explanation of the key technical problems addressed in this application Current cavitation jet peening equipment is easily limited by the workpiece and processing environment, making it unsuitable for multiple working conditions simultaneously. Furthermore, existing cavitation jet peening equipment has relatively limited functionality, causing numerous inconveniences when treating different workpiece surfaces. To overcome these problems, the technical solution presented in this application is specifically proposed.

[0032] III. Detailed Description of This Application in Conjunction with Specific Embodiments Example

[0033] This embodiment describes a cavitation jet shot peening system that can be used for surface strengthening operations on metal parts such as plate-shaped parts and cylindrical parts.

[0034] like Figure 1 As shown, a cavitation jet shot peening system includes a central control platform 1, a water storage device 2, a water supply device 3, a water source treatment tank 4, a water circulation pressurization device 5, a cavitation jet enhancement device 6, and a water tank 7.

[0035] The central control platform 1 is the control center of the entire cavitation jet shot peening control system. It is used to monitor, edit and control the operation of the three-axis motion platform and the rotating jet device, as well as the water pressure, water temperature and liquid level of each water tank, and control the overall operation of the equipment.

[0036] The water storage device 2 serves as the water source for the entire system, supplying water to the high-pressure water supply pipe 61, the low-pressure water supply pipeline 62, and the water tank 7.

[0037] The water storage device 2 uses a water storage tank, which is equipped with one inlet pipe and two outlet pipes.

[0038] The inlet pipe is connected to a water pump to replenish the water storage tank. One outlet pipe of the water storage tank is connected to the water supply device 3, and the other outlet pipe is connected to the water tank 7. The water storage tank can supply water to the entire water supply pipeline, and can also supply water to the water tank 7.

[0039] To facilitate the detection of the water level in the water storage tank, a water level sensor is installed in the water storage tank. The water level sensor is electrically connected to the central control platform 1. When the water level sensor detects that the water level in the water storage tank is lower than the set water level value, the central control platform 1 controls the water pump to start and replenish water.

[0040] During operation, the water storage tank is connected in sequence to the water supply device 3, the water treatment device, and the water circulation booster device 5 via pipelines. The water circulation booster device 5 is connected to the cavitation jet enhancement device 6 via a high-pressure water supply pipeline 61 and a low-pressure water supply pipeline 62. The water circulation booster device 5 can provide high-pressure water and low-pressure water to the cavitation jet enhancement device 6 via the high-pressure water supply pipeline 61 and the low-pressure water supply pipeline 62.

[0041] The cavitation jet strengthening device 6 performs cavitation shot peening strengthening on the metal surface, including a high-pressure water supply line 61, a low-pressure water supply line 62, and a nozzle assembly 63 connected to the high-pressure and low-pressure water supply lines 62.

[0042] like Figure 3 As shown, the nozzle assembly 63 includes a nozzle 631 disposed at the center and an inlet pipe 632 connected to the nozzle 631. The nozzle 631 is an angled nozzle 631, and the opening shape of the nozzle 631 is set as a progressive opening. The progressive opening nozzle 631 utilizes the change in the shape of the outlet diffuser section to intensify the shearing action between the jet and the surrounding liquid, thereby generating cavitation.

[0043] Depending on the part being processed, nozzles can be selected from types such as self-excited resonance type, Helmholtz type, organ pipe type, stepped type, and center body type.

[0044] Since some large components cannot be immersed in water and therefore cannot be subjected to cavitation water shot peening, an annular sleeve 8 is provided around the nozzle 631 and the inlet pipe 632. An annular cavity 9 is formed between the nozzle 631 and the annular sleeve 8, and the annular cavity 9 is connected to the low-pressure water supply pipeline 62.

[0045] Two spiral tubes 15 are installed inside the annular cavity 9. The two spiral tubes 15 are spirally distributed around the inlet pipe inside the annular cavity 9. One end of the spiral tube 15 is connected to the low-pressure water supply pipeline 62, and the outlet of the other end of the spiral tube 15 is correspondingly set to the opening of the nozzle 631. The low-pressure spiral tube and the high-pressure pipeline cooperate with each other. When the jet is ejected at high speed from the nozzle 631, it generates a shearing effect with the static liquid or low-speed circulation in the annular cavity 9 to form a vortex cavitation jet.

[0046] A flow regulating valve 10 is installed at the junction of the annular cavity 9 and the contraction section of the annular sleeve 8 to regulate the low-pressure water flow rate.

[0047] The water supply device 3 includes a primary water supply pump 31 and a secondary water supply pump 32, which are responsible for pressurizing the water supply pipeline to ensure the pressure required for each stage of the water supply process.

[0048] A primary water supply pump 31 connects to a water storage device 2 and a water treatment tank 4 via a water supply pipeline. Water in the storage device 2 is pressurized once by the primary water supply pump 31 and then enters the water treatment tank 4. A secondary water supply pump 32 connects to the water treatment tank 4 and a filtration device via a water supply pipeline. Water treated in the water treatment tank 4 is pressurized a second time by the secondary water supply pump 32 and then connected to a water circulation pressurization device 5 via a water supply pipeline. A secondary filtration device is installed between the secondary water supply pump 32 and the water circulation pressurization device 5. The secondary filtration device can be a bag filter, a self-cleaning filter, a candle filter, or a frame filter. The secondary filtration device can filter particles subjected to impact erosion, preventing damage to the high-pressure pump unit.

[0049] The water circulation pressurization device includes a high-pressure water jet generating device and a low-pressure water jet generating device, as well as a high-pressure water jet control system and a low-pressure water jet control system for controlling their operation. The high-pressure water jet control system and the low-pressure water jet control system are electrically connected to the central control platform 1, and the central control platform 1 realizes cavitation shot peening operation on metal parts through the high-pressure water jet control system and the low-pressure water jet control system.

[0050] A dissolved air pump and a water temperature control device are installed on the water treatment tank 4. The dissolved air pump is used to increase the gas content in the water treatment tank 4, and the water temperature control device is used to control the water temperature in the water treatment tank 4. By controlling the gas content and temperature in the water treatment tank 4, the cavitation effect of the water flow passing through the nozzle can be improved.

[0051] The water treatment tank 4 is equipped with a liquid level sensor, a temperature sensor 14, and a dissolved gas detection device for detecting dissolved gas content. The dissolved gas detection device uses a dissolved oxygen analyzer to detect oxygen content and further estimate the gas content in the water. The liquid level sensor, temperature sensor 14, and dissolved gas detection device are electrically connected to the central control platform 1 via communication lines, correspondingly controlling the water volume, water temperature, and dissolved gas content in the water treatment tank 4, thereby ensuring the stability of dissolved gas in the water source.

[0052] To ensure the effectiveness of cavitation peening, the workpiece needs to be submerged in water. For example... Figure 2 As shown, corresponding to conventional cavitation shot peening operations, water tank 7 is an open water tank. A nozzle adjustment mechanism 11 is set at the upper part of the opening of the open water tank. The nozzle adjustment structure adopts a three-axis motion platform, which is used to adjust the position of the nozzle in the X, Y and Z axes respectively.

[0053] The nozzle adjustment mechanism 11 includes a sliding mounting bracket, an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism.

[0054] The X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism are mounted on the sliding mounting bracket and are used to drive the nozzle to move in the X, Y, and Z axis directions, respectively. The sliding mounting bracket includes a crossbeam located above the opening of the water tank 7 and columns located on both sides of the water tank 7. The columns are slidably connected to the water tank 7. A drive mechanism for driving the sliding mounting bracket is provided at one end of the water tank 7 to drive the sliding mounting base to slide along both sides of the water tank 7, thereby adjusting the position of the nozzle assembly 63 in the X-axis direction.

[0055] The Y-axis drive mechanism includes a first drive motor, a first transmission screw, and a slider mounted on the transmission screw. A connector is provided on the slider, and a guide hole is provided on the connector. A guide rod is installed at the guide hole, and connectors are provided on both sides of the guide rod. A nozzle mounting seat is connected and fixed to the connector. The first drive motor drives the slider through the first transmission screw to move the nozzle mounting seat along the Y-axis direction, thereby adjusting the position of the nozzle assembly 63 in the Y-axis direction.

[0056] The first transmission lead screw can also be replaced by a slide rail, gear rack, synchronous belt, or other components with the same function.

[0057] The Z-axis drive mechanism includes a second drive motor and a second transmission screw. The second screw is threadedly connected to the nozzle mounting base. The second motor drives the nozzle mounting base to slide up and down along the Z-axis through the second transmission screw, thereby realizing the position adjustment of the nozzle assembly 63 in the height direction with respect to the workpiece.

[0058] The first transmission lead screw can also be replaced by a slide rail, gear rack, synchronous belt, or other components with the same function.

[0059] To facilitate the clamping of different metal workpieces, a sheet metal clamping mechanism and a cylindrical part clamping mechanism are set in the open water tank 7, which are used to clamp and fix sheet metal parts or cylindrical parts respectively.

[0060] Example 2 like Figure 4 As shown, without changing the size of the water tank, in order to simulate the cavitation effect under different pressure environments, the water tank 7 is set as a closed water tank, which includes a tank body and a sealing cover 12 on the upper part of the tank body.

[0061] The nozzle assembly 63 is installed inside the sealed water tank and on the adjustment component set on the upper part of the sealing cover 12. The adjustment component is used to adjust the installation angle between the nozzle assembly 63 and the workpiece. By adjusting the nozzle spray angle, a better cavitation shot peening effect can be achieved.

[0062] A clamping platform is installed inside the sealed water tank. The clamping platform is correspondingly set with the nozzle assembly 63. The clamping platform is equipped with a sheet metal clamping mechanism and a cylindrical clamping mechanism, which are used to clamp and fix the sheet metal parts or the cylindrical parts, respectively.

[0063] Since the nozzle is fixed in this embodiment, in order to achieve comprehensive strengthening of the workpiece, the clamping platform is set as a movable clamping platform. A base is set at the bottom of the clamping platform, and the clamping platform is slidably installed on the bottom of the water tank 7. The clamping platform is automatically driven by a drive structure.

[0064] To adjust the pressure inside the sealed water tank and simulate the cavitation effect of nozzles at different depths, the sealed water tank is connected to a pressurization device via a pressurization pipeline. The pressurization device is used to adjust the pressure inside the water tank. At the same time, a pressure sensor 13 is installed inside the sealed water tank to adjust the pressure inside the tank. By changing the pressure inside the water tank 7, the cavitation effect at different depths can be simulated.

[0065] To reduce the impact of temperature on cavitation, a temperature regulating device is installed inside the closed water tank 7 to regulate the water temperature of the closed water tank.

[0066] The pressure and temperature within the sealed water tank are monitored by pressure sensor 13 and temperature sensor 14 inside the tank. Pressure sensor 13 and temperature sensor 14 are electrically connected to the central control platform 1 via communication lines. When pressure sensor 13 and temperature sensor 14 detect that the pressure and temperature within the sealed water tank 7 are lower than the set values, the central control platform 1 adjusts the pressure and temperature using a pressurization device and a temperature regulation device to achieve better cavitation.

[0067] This application also describes a method for using cavitation jet shot peening. When the equipment is in operation, the main power is turned on, and the operation of the equipment is controlled by a PLC (or industrial control system) and monitored. The high-pressure water supply system is started. The water source of the water tank is pressurized by a primary water supply pump and enters the water treatment tank. After pretreatment, the water source is transported by a secondary water supply pump through pipelines to the water circulation pressurization device. The water circulation pressurization device is connected to the nozzle assembly through high and low pressure water supply pipelines. The nozzle assembly performs cavitation jet shot peening operation in a submerged environment. Depending on the application scenario, the flooding environment is set into three types, including normal temperature and pressure flooding environment, sealed pressurized flooding environment, and artificial simulation flooding environment. (1) Normal temperature and pressure water-submerged environment During cavitation operations at normal temperature and pressure, water from an open tank is used to create a flooded environment; during cavitation jet shot peening operations, the nozzle enters the tank directly. When processing parts in a submerged water tank, the water temperature in the tank will increase with the processing time. When the temperature exceeds the preset value, the central control platform will automatically activate the temperature regulation device (cooler or heater) to ensure that the water temperature in the tank is within a certain range, avoiding excessively high or low water temperatures that could affect the cavitation effect. When the water level in the tank is too high, the water pressure increases. When the preset value is reached, the central control platform controls the water outlet valve to drain the water and reduce the pressure in the tank, thereby ensuring that cavitation jet shot peening operations can be carried out at normal temperature and pressure. (2) Sealed pressurized flooded environment In a pressurized environment, the water tank is sealed, the cavitation nozzle remains stationary, and the workpiece clamping platform inside the water tank moves. The sealed water tank is pressurized internally by a booster pump, which is connected to the central control platform. When the pressure inside the sealed water tank does not reach the preset value, the booster pump works to increase the air pressure inside the sealed water tank. As the air pressure increases, the water pressure inside the sealed water tank also increases, which can simulate environments under different pressure depths.

[0068] A sealed water tank can increase the water pressure inside the tank, thus increasing the pressure within the sealed tank. The water tank can be a pressure-bearing structure such as a cylinder or a sphere.

[0069] As the equipment operates, the water volume in the sealed water tank gradually increases, and the pressure gradually increases. When the pressure becomes too high, the pressure in the water tank can be reduced by releasing water or air.

[0070] A drain outlet is located at the bottom of the sealed water tank, and an air vent is located at the top. Both a digital pressure gauge and a mechanical pressure gauge are installed to monitor and regulate the internal pressure of the sealed water tank. The digital pressure gauge is connected to the central control platform. (3) Artificial simulated flood environment Low-pressure water is introduced into the annular cavity so that the water jet generated by the external low-pressure nozzle can cover the water jet generated by the internal high-pressure nozzle. The low-pressure water flow surrounds the high-pressure cavitation water jet, forming a flooded environment. Before use, the nozzle pressure of the equipment is adjusted. When the equipment pressure reaches the preset value, cavitation jet shot peening operation is performed.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0072] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A cavitation jet shot peening system, characterized in that, include: The system includes a central control platform (1), a water storage device (2), a water supply device (3), a water source treatment tank (4), a water circulation booster device (5), a cavitation jet enhancement device (6), and a water tank (7). The water storage device (2) is connected to the water supply device (3), the water source treatment device, and the water circulation booster device (5) in sequence via pipelines. The water circulation booster device (5) is connected to the cavitation jet enhancement device (6) via pipelines. The cavitation jet enhancement device (6) includes a high-pressure water supply pipeline (61), a low-pressure water supply pipeline (62), and a nozzle assembly (63) connected to the high-pressure and low-pressure water supply pipelines. The nozzle assembly (63) includes a nozzle (631) located in the center and an access pipe (632) connected to the nozzle (631). The nozzle (631) is configured as an angled nozzle (631), and the nozzle (631) opening shape is configured as a progressive opening. The nozzle (631) is connected to the access pipe (632) via the access pipe. A high-pressure water supply pipeline (61) is connected, and an annular sleeve (8) is set around the nozzle (631) and the inlet pipe (632). An annular cavity (9) is formed between the nozzle (631) and the annular sleeve (8). The annular cavity (9) is connected to the low-pressure water supply pipeline (62). A flow regulating valve (10) is set at the junction of the annular cavity (9) and the annular sleeve (8) to regulate the low-pressure water flow rate. Two spiral tubes (15) are set in the annular cavity (9). The two spiral tubes (15) are spirally distributed around the inlet pipe set inside the annular cavity (9). One end of the spiral tube (15) is connected to the low-pressure water supply pipeline (62), and the outlet of the other end of the spiral tube (15) is set to correspond to the opening of the nozzle (631). The low-pressure spiral tube and the high-pressure pipeline cooperate with each other. When the jet is ejected from the nozzle (631) at high speed, it generates a shearing effect with the static liquid or low-speed circulation in the annular cavity (9) to form a vortex cavitation jet. The water treatment tank (4) is equipped with a dissolved air pump and a water temperature control device. The dissolved air pump is used to increase the gas content in the water treatment tank (4), and the water temperature control device is used to control the water temperature in the water treatment tank (4). The water treatment tank (4) is also equipped with a liquid level detection sensor, a temperature sensor (14), and a dissolved air detection device for detecting the dissolved air content. The liquid level detection sensor, the temperature sensor (14), and the dissolved air detection device are electrically connected to the central control platform (1) via communication lines, and respectively control the water volume, water temperature, and dissolved air content in the water treatment tank (4). The nozzle assembly (63) performs cavitation jet shot peening in a flooded environment; the flooded environment is set to three types, including normal temperature and pressure water flooded environment, sealed pressurized water flooded environment, and artificial simulation water flooded environment.

2. The cavitation jet shot peening system according to claim 1, characterized in that, The water storage device (2) is a water storage tank, and the water storage tank is equipped with inlet and outlet water pipes; the pipes include an inlet water pipe and two outlet water pipes; one outlet water pipe is connected to the water supply device (3), and the other outlet water pipe is connected to the water tank (7); and the water storage tank is equipped with a liquid level sensor, which is electrically connected to the central control platform (1) for detecting the liquid level of the water storage tank.

3. The cavitation jet shot peening system according to claim 1, characterized in that, The water supply device (3) includes a primary water supply pump (31) and a secondary water supply pump (32); the primary water supply pump (31) is connected to the water storage device (2) and the water source treatment tank (4) through a water supply pipeline. The water in the water storage device (2) is pressurized once by the primary water supply pump (31) and then enters the water source treatment tank (4); the secondary water supply pump (32) is connected to the water source treatment tank (4) and the filter device through a water supply pipeline. The water treated by the water source treatment tank (4) is pressurized twice by the secondary water supply pump (32) and then connected to the water circulation pressurization device (5) through the water supply pipeline; a secondary filter device is set between the secondary water supply pump (32) and the water circulation pressurization device (5).

4. The cavitation jet shot peening system according to claim 1, characterized in that, The water circulation booster device includes a high-pressure water jet device and a low-pressure water jet device, as well as a high-pressure water jet control system and a low-pressure water jet control system for controlling their operation; the high-pressure water jet control system and the low-pressure water jet control system are respectively electrically connected to the central control platform (1).

5. The cavitation jet shot peening system according to claim 1, characterized in that, The water tank (7) is an open-type water tank. A nozzle adjustment mechanism (11) is provided at the top of the opening of the open-type water tank. A clamping device is provided inside the water tank (7) for clamping the workpiece.

6. The cavitation jet shot peening system according to claim 5, characterized in that, The nozzle adjustment mechanism (11) includes a sliding mounting bracket, an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism; the X-axis drive mechanism, the Y-axis drive mechanism, and the Z-axis drive mechanism are mounted on the sliding mounting bracket and are used to drive the nozzle to move in the X, Y, and Z axis directions, respectively.

7. The cavitation jet shot peening system according to claim 1, characterized in that, The water tank (7) is a closed water tank, which includes a tank body and a sealing cover (12) on the upper part of the tank body. The nozzle assembly (63) is installed inside the closed water tank and on an adjustment component on the upper part of the sealing cover (12). The adjustment component is used to adjust the installation angle between the nozzle assembly (63) and the workpiece. A clamping platform is installed inside the closed water tank. The clamping platform is correspondingly set with the nozzle assembly (63). The clamping platform is provided with a sheet metal clamping mechanism and a cylindrical clamping mechanism, which are used to clamp and fix sheet metal parts or cylindrical parts, respectively. A base is set at the bottom of the clamping platform. The base is installed at the bottom of the water tank (7). The clamping platform and the base are slidably installed.

8. The cavitation jet shot peening system according to claim 7, characterized in that, A pressure sensor (13) and a temperature sensor (14) are installed inside the sealed water tank. The pressure sensor (13) and the temperature sensor (14) are electrically connected to the central control platform (1) through communication lines. The pressure sensor (13) and the temperature sensor (14) are used to detect the temperature and pressure inside the sealed water tank, and the cavitation effect of the nozzle is adjusted by adjusting the pressure and temperature. In order to adjust the pressure and temperature inside the sealed water tank, the sealed water tank (7) is connected to a pressurizing device and a temperature regulating device through a pressurizing pipeline. The pressurizing device and the temperature regulating device are electrically connected to the central control platform (1).

9. A method of using the cavitation jet shot peening system as described in any one of claims 1 to 8, comprising the following steps: turning on the main power supply, starting the high-pressure water supply system, the water source of the water tank is pressurized by the primary water supply pump and enters the water source treatment tank, the water source is pretreated and then transported by the secondary water supply pump through the pipeline to the water circulation pressurization device. The water circulation booster device is connected to the nozzle assembly via high and low pressure water supply pipelines. The nozzle assembly performs cavitation jet shot peening operations in a submerged environment. Depending on the application scenario, including: 1) In a normal temperature and pressure submerged environment, during cavitation operations, water from an open tank is used to create the submerged environment; during cavitation jet peening, the nozzle enters the tank directly; when the temperature exceeds the preset value, the central control platform automatically activates the temperature regulation device to maintain the tank water temperature within a certain range, avoiding excessively high or low temperatures that could affect the cavitation effect; when the water level in the tank is too high, the water pressure increases, and when it reaches the preset value, the central control platform controls the outlet valve to drain water to reduce the pressure in the tank and maintain cavitation jet peening operations at normal temperature and pressure; 2) In a sealed pressurized submerged environment, under pressurized conditions, the tank is closed, the cavitation nozzle remains stationary, and the components inside the tank clamp the platform to move; the central control platform controls the booster pump to increase internal pressure in the sealed tank; when the pressure in the sealed tank does not reach the preset value, the booster pump operates to increase the gas pressure in the sealed tank. As the air pressure increases, the water pressure inside the sealed water tank also increases. By changing the pressure, the environment under different pressure depths is simulated. As the equipment operates, the water volume inside the sealed water tank gradually increases, and the pressure gradually increases. A drain outlet is provided at the bottom of the sealed water tank, and an air outlet is provided at the top. When the pressure is too high, the water tank pressure can be reduced by draining water or releasing air. The sealed water tank is equipped with a digital pressure gauge and a mechanical pressure gauge to detect and adjust the internal pressure of the sealed water tank. The detected data is transmitted to the central control platform to regulate the internal pressure environment of the sealed water tank. 3) Artificial simulated water flooding environment: Low-pressure water is introduced into the annular cavity so that the jet water generated by the external low-pressure nozzle can cover the jet water generated by the internal high-pressure nozzle. The low-pressure water flow covers the outside of the high-pressure cavitation water jet, forming a flooding environment. Before use, the nozzle pressure of the equipment is adjusted. When the equipment pressure reaches the preset value, cavitation jet shot peening operation is performed.

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