A device and method for enhancing abrasive jet stream energy focusing by using alternating electric field

Abstract

The present application relates to the field of abrasive jet cutting, and particularly relates to a device and method for enhancing abrasive jet energy concentration spraying by using an alternating electric field, comprising an abrasive supply system, a jet generation system arranged on one side of the abrasive supply system, a spraying pipeline arranged on one side of the jet generation system, a spiral magnetic sensor assembly installed at one end of the spraying pipeline, and a control system electrically connected to the spiral magnetic sensor assembly, wherein the spiral magnetic sensor assembly comprises a shielding shell installed on the outer surface of the one end of the spraying pipeline, and the magnetic abrasive particles are precisely controlled by using an alternating electric field, the abrasive particles are forced to concentrate in the jet core area, and the jet energy is maximized to be transmitted to the abrasive particles, so that the problems of insufficient abrasive acceleration and energy dispersion in the traditional abrasive jet are solved, the abrasive jet energy utilization efficiency is greatly improved, the erosion depth is effectively improved, the erosion diameter is reduced, and better jet impact and cutting effects are achieved.

Description

Technical Field

[0001] This invention relates to the field of abrasive jet cutting, and more specifically to a device and method for enhancing the focused spraying of abrasive jets using an alternating electric field. Background Technology

[0002] Abrasive waterjet technology is mainly used in polishing, rust removal and other fields. With the continuous maturation of the technology, this technology uses high-speed water jets to carry abrasive particles, giving the abrasive particles sufficient impact kinetic energy, and achieving effective cutting of hard materials through the grinding action of the abrasive.

[0003] Depending on the mixing method of the abrasive and water, abrasive waterjet can be divided into pre-mixing and post-mixing types. Post-mixing abrasive waterjet mainly utilizes the negative pressure generated in the mixing chamber by the high-speed water flow to draw abrasive particles into the mixing chamber. Then, the high-speed water flow and abrasive particles are mixed in the mixing chamber before being ejected through the nozzle. Compared to pure water jet, abrasive waterjet can break up coal and rock masses under relatively low jet pressure conditions. However, due to the short abrasive mixing time in post-mixing abrasive waterjet, not all the abrasive particles can enter the core section of the jet, resulting in insufficient abrasive acceleration. Therefore, post-mixing abrasive waterjet still requires a higher jet pressure (>100MPa) to effectively cut hard materials. The increase in system pressure not only increases energy consumption but also places higher demands on the safety and reliability of the system.

[0004] According to Chinese Patent Publication No. CN202510043106.8, a magnetic water jet in-hole grooving device and its usage method are disclosed. This invention alleviates problems such as easy wear, jet cavitation, low cutting ability and precision, and bulky equipment by adding electrolyte NaCl and polymer polyvinyl alcohol to the aqueous solution in the storage tank, and simultaneously utilizing the "hooking effect" of the induced current generated by the magnetic field on the jet. This patent uses an alternating electric field to control magnetic abrasive particles. By controlling the frequency of the alternating electric field, the abrasive particles are magnetized and controlled within the core region of the jet, maximizing the utilization of jet energy and achieving a focused abrasive jet spraying effect. However, while the above technology improves the abrasive jet cutting effect to some extent by increasing jet pressure and optimizing nozzle structure, it still cannot avoid the problem of low jet energy utilization efficiency. Therefore, this patent proposes a device and method for enhancing the focused abrasive jet spraying using an alternating electric field, based on the jet's morphology itself. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a device and method for enhancing the focused spraying of abrasive jets using an alternating electric field.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] An apparatus for enhancing the focused spraying of abrasive jets using an alternating electric field includes an abrasive supply system, a jet generating system on one side of the abrasive supply system, a spraying pipe on one side of the jet generating system, a helical magnetic sensor assembly installed at one end of the spraying pipe, and the helical magnetic sensor assembly electrically connected to a control system.

[0008] The spiral magnetic sensor assembly includes a shielding shell installed on the outer surface of one end of the injection pipe. A spiral magnetic coil is provided on the inner wall of the shielding shell. A sealing groove is opened on the inner wall of the shielding shell. A sealing plate is slidably installed on the inner wall of the sealing groove. The sealing plate is fixedly installed on the outer surface of the injection pipe.

[0009] The side surface of the sealing plate is provided with a number of water pipes arranged in a ring array, and the surface of the water pipes is provided with a number of nozzles.

[0010] In a preferred embodiment, the outer surfaces of the shielding shell and the jet pipe are provided with quick-connect components. The quick-connect components include a movable interface fixedly installed on the outer surface of the shielding shell, an installation ring on the outer surface of the jet pipe, an annular groove on the side surface of the installation ring, the movable interface being adapted to the annular groove, and a rod slidably penetratingly connected to the surface of the installation ring and the movable interface. A sliding plate is fixedly installed at one end of several rods, and an electric push rod is fixedly installed on one side of the jet generating system. A sliding plate is fixedly installed at one end of the electric push rod.

[0011] In a preferred embodiment, a first pipe is fixedly installed at one end of a plurality of water supply pipes, the first pipe is installed through the surface of the mounting ring, the first pipe is slidably installed inside the sliding plate, and an annular water pipe is fixedly installed at one end of a plurality of first pipes, with an inlet pipe provided on one side of the annular water pipe.

[0012] In a preferred embodiment, the abrasive supply system includes an abrasive supply vessel, an inlet pipe is provided on the upper surface of the abrasive supply vessel, a discharge plate is provided inside the abrasive supply vessel, the discharge plate is hollow inside, a rotating plate is rotatably connected inside the discharge plate, and discharge grooves are provided on the surfaces of both the rotating plate and the discharge plate.

[0013] In a preferred embodiment, the inner wall of the abrasive supply vessel is provided with a guide seat, a first rotating rod is fixedly installed inside the rotating plate, the first rotating rod is rotatably connected to the inside of the discharge plate, a discharge pipe is provided on the side surface of the abrasive supply vessel, a second rotating rod is rotatably connected inside the discharge pipe, a spiral conveying blade is provided on the outer surface of the second rotating rod, and a stirring blade is provided on the outer surface of the first rotating rod.

[0014] In a preferred embodiment, both the first rotating rod and the second rotating rod are rotatably connected inside the guide seat. One end of both the first rotating rod and the second rotating rod is provided with a bevel gear, and the bevel gears on both sides are meshed with each other. The inner bottom wall of the abrasive supply vessel is provided with a drive motor, and the output end of the drive motor is fixedly installed with the first rotating rod. The outer surface of the first rotating rod is provided with a scraper, and the scraper is in close contact with the surface of the feed plate.

[0015] In a preferred embodiment, the jet generating system includes a mixing box fixedly installed at one end of a discharge pipe. The mixing box has a mixing chamber inside, and a spiral guide vane is provided inside the mixing chamber. The surface of the spiral guide vane is provided with a plurality of protrusions. A water nozzle pipe is provided on the upper surface of the mixing chamber, and the water nozzle pipe is fixedly installed through the surface of the mixing box in an inclined state.

[0016] In a preferred embodiment, a booster pump is provided at one end of the mixing chamber, and a focusing nozzle tube is connected to one end of the booster pump via a flange. A control valve assembly is connected to one end of the focusing nozzle tube, and a jet pipe is fixedly installed at the output end of the control valve assembly.

[0017] A method of using an abrasive jet focusing and energy-concentrating injection device enhanced by an alternating electric field includes the following steps:

[0018] S1. Connect the abrasive supply system, jet generation system and helical magnetic sensor assembly, and check the air / water tightness of each system to ensure the sealing effect of air / water tightness, and then fill the abrasive into the abrasive supply system.

[0019] S2. Place the spiral magnetic sensor assembly on the outer surface of the spray pipe and quickly install it on one end of the spray pipe using the quick-install assembly. After installation, the spiral magnetic sensor assembly will evenly wrap around the outer surface of the water pipe and the nozzle.

[0020] S3. Connect the power supply line of the spiral magnetic coil in the spiral magnetic sensor assembly to the power output terminal of the control system. Perform initialization settings in the human-machine interface of the control system, and then start the spiral magnetic sensor assembly.

[0021] S4. Start the spiral magnetic sensor assembly through the control system to generate current in the spiral magnetic coil, and set the abrasive jet impact time according to the test requirements.

[0022] S5. After completing a single impact, shut down the spiral magnetic sensor assembly through the control system, observe the impact effect, adjust the current parameters of the spiral magnetic sensor assembly, and then perform the next impact operation.

[0023] The beneficial effects of this invention are:

[0024] 1. By using an alternating electric field to achieve precise control of the suspension of magnetic abrasive particles, the abrasive particles are forced to concentrate in the core area of ​​the jet, maximizing the transfer of jet energy to the abrasive particles. This solves the problems of insufficient abrasive acceleration and energy dispersion in traditional abrasive jets, greatly improving the energy utilization efficiency of abrasive jets, effectively increasing erosion depth, reducing erosion diameter, and achieving better jet impact and cutting effects.

[0025] 2. The quick-installation component enables rapid assembly and disassembly of the spiral magnetic sensor assembly and the injection pipe, thereby improving the ease of installation and maintenance of the device. The movable interface in the quick-installation component and the matching groove of the mounting ring, together with the linkage of the plug rod, sliding plate and electric push rod, allow for rapid installation and disassembly of the spiral magnetic sensor assembly without the need for complicated tools. Compared with the traditional bolt connection method, it solves the problems of cumbersome connection, inconvenient assembly and disassembly, and low maintenance efficiency of the existing spiral magnetic sensor assembly, and greatly reduces the time and labor costs of installation and maintenance.

[0026] 3. By setting up the abrasive supply system, the problems of easy clogging, uneven feeding, and abrasive agglomeration in the traditional abrasive supply process are solved. The feeding plate and rotating plate inside the abrasive supply vessel cooperate, and the alignment and misalignment of the feeding grooves on their surfaces achieve quantitative and uniform feeding of abrasive. The stirring blades on the outer surface of the first rotating rod can stir the abrasive to prevent abrasive agglomeration and further ensure the uniformity of feeding. The spiral conveying blades on the outer surface of the second rotating rod can smoothly transport the abrasive to the jet generation system, avoid the abrasive from clogging in the discharge pipe, and ensure the continuity of abrasive supply. Attached Figure Description

[0027] Figure 1 This is a frontal cross-sectional view of the present invention.

[0028] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the abrasive supply system in this invention;

[0030] Figure 4 This is a schematic diagram of the jet generation system in this invention;

[0031] Figure 5 This is a schematic diagram of the quick-release assembly and the spiral magnetic sensor assembly in this invention;

[0032] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0033] In the picture:

[0034] 1. Abrasive supply system; 101. Abrasive supply vessel; 102. Feeding plate; 103. Rotating plate; 104. Feeding trough; 105. Screw conveyor blades; 106. Bevel gear; 107. Scraper;

[0035] 2. Jet generation system; 201. Mixing box; 202. Mixing chamber; 203. Spiral guide vane; 204. Protrusion; 205. Water nozzle pipe; 206. Booster pump; 207. Focusing nozzle pipe; 208. Control valve assembly;

[0036] 3. Spray pipe;

[0037] 4. Helical magnetic sensor assembly; 401. Shielding housing; 402. Helical magnetic coil; 403. Sealing plate;

[0038] 5. Water supply pipe; 6. Nozzle assembly;

[0039] 7. Quick-installation assembly; 701. Movable interface; 702. Mounting ring; 703. Annular groove; 704. Insert rod; 705. Sliding plate; 706. Electric push rod;

[0040] 8. Ring water pipe; 9. Control system. Detailed Implementation

[0041] The present invention will now be further described with reference to the accompanying drawings.

[0042] Example 1: Refer to Figures 1 to 6 As shown, a device for enhancing the energy-concentrating spray of abrasive jet using an alternating electric field includes an abrasive supply system 1, a jet generating system 2 is provided on one side of the abrasive supply system 1, a spray pipe 3 is provided on one side of the jet generating system 2, a spiral magnetic sensor assembly 4 is installed at one end of the spray pipe 3, and the spiral magnetic sensor assembly 4 is electrically connected to a control system 9.

[0043] The spiral magnetic sensor assembly 4 includes a shielding housing 401 installed on the outer surface of one end of the injection pipe 3. A spiral magnetic coil 402 is provided on the inner wall of the shielding housing 401. A sealing groove is opened on the inner wall of the shielding housing 401. A sealing plate 403 is slidably installed on the inner wall of the sealing groove. The sealing plate 403 is fixedly installed on the outer surface of the injection pipe 3.

[0044] The side surface of the sealing plate 403 is provided with a number of water pipes 5 in a ring array, and the surface of the water pipes 5 is provided with a number of nozzles 6.

[0045] Example 2: Refer to Figure 1 , Figure 5 and Figure 6As shown, the difference between this embodiment and Embodiment 1 is that a quick-installation assembly 7 is provided on the outer surface of the shielding shell 401 and the jet pipe 3. The quick-installation assembly 7 includes a movable interface 701 fixedly installed on the outer surface of the shielding shell 401, an installation ring 702 is provided on the outer surface of the jet pipe 3, and an annular groove 703 is opened on the side surface of the installation ring 702. The movable interface 701 is adapted to the annular groove 703. A plug rod 704 is slidably connected through the surface of the installation ring 702 and the movable interface 701. A sliding plate 705 is fixedly installed on one end of several plug rods 704. An electric push rod 706 is fixedly installed on one side of the jet generating system 2. A sliding plate 705 is fixedly installed on one end of the electric push rod 706. The quick-installation assembly 7 adapts to the annular groove 703 of the installation ring 702 through the movable interface 701 and cooperates with the plug rods 704 to realize the quick fixation of the shielding shell 401 and the jet pipe 3. The installation and disassembly of the spiral magnetic sensor assembly can be completed without the need for complicated tools.

[0046] Specifically, refer to Figure 5 As shown, a first pipe is fixedly installed at one end of several water supply pipes 5. The first pipe is installed through the surface of the mounting ring 702 and slidably installed inside the sliding plate 705. An annular water pipe 8 is fixedly installed at one end of several first pipes. A water inlet pipe is provided on one side of the annular water pipe 8. Several water supply pipes are connected to the annular water pipe 8 through the first pipes. The annular water pipe 8 is connected to the water source through the water inlet pipe. The annular layout of the annular water pipe 8 can make the water flow evenly distributed to each first pipe, thereby ensuring that the water supply of each water supply pipe is consistent, avoiding the difference in the spray intensity of the nozzle component 6 due to uneven water supply, ensuring the uniformity of the abrasive jet, and improving the consistency of processing quality.

[0047] Example 3: Refer to Figures 1 to 3 As shown, the difference between this embodiment and Embodiments 1 and 2 is that the abrasive supply system 1 includes an abrasive supply vessel 101. An inlet pipe is provided on the upper surface of the abrasive supply vessel 101. A discharge plate 102 is provided inside the abrasive supply vessel 101. The discharge plate 102 is hollow inside. A rotating plate 103 is rotatably connected inside the discharge plate 102. Discharge grooves 104 are provided on the surfaces of both the rotating plate 103 and the discharge plate 102. This ensures uniform abrasive supply and avoids clogging. The hollow discharge plate 102 inside the abrasive supply vessel 101, along with the discharge grooves 104 on both the discharge plate 102 and the rotating plate 103, allows the discharge grooves 104 on the rotating plate 103 to periodically align with those on the discharge plate 102. This achieves quantitative and uniform abrasive feeding, preventing blockage of the discharge port due to gravity accumulation of abrasive, ensuring the continuity of abrasive supply, and guaranteeing the stable operation of the jet jet.

[0048] Specifically, refer to Figures 1 to 3As shown, a guide seat is provided on the inner wall of the abrasive supply vessel 101. A first rotating rod is fixedly installed inside the rotating plate 103. The first rotating rod is rotatably connected to the inside of the discharge plate 102. A discharge pipe is provided on the side surface of the abrasive supply vessel 101. A second rotating rod is rotatably connected inside the discharge pipe. A spiral conveying blade 105 is provided on the outer surface of the second rotating rod. A stirring blade is provided on the outer surface of the first rotating rod to improve the flowability of the abrasive and avoid accumulation and blockage. The guide seat can guide the abrasive and guide it smoothly into the discharge plate 102, avoiding accumulation of abrasive in the corners inside the abrasive supply vessel 101. The stirring blade on the outer surface of the first rotating rod can stir the abrasive in the abrasive supply vessel 101, break up abrasive clumps, improve the flowability of the abrasive, further avoid blockage of the discharge port, and ensure smooth supply of abrasive.

[0049] Specifically, refer to Figures 1 to 3 As shown, both the first and second rotating rods are rotatably connected inside the guide seat. One end of each of the first and second rotating rods is provided with a bevel gear 106, and the two bevel gears 106 mesh with each other. A drive motor is provided on the inner bottom wall of the abrasive supply vessel 101. The output end of the drive motor is fixedly installed with the first rotating rod. A scraper 107 is provided on the outer surface of the first rotating rod. The scraper 107 is in close contact with the surface of the feed plate 102 to ensure smooth feeding. When the first rotating rod rotates, the scraper 107 can scrape off the abrasive residue on the surface of the feed plate 102, preventing the abrasive from clogging the feed trough 104, ensuring the unobstructed flow of the feed trough 104, further ensuring the uniformity and continuity of abrasive supply, while reducing abrasive waste and lowering the maintenance frequency.

[0050] Example 4: Refer to Figures 1 to 4 As shown, the difference between this embodiment and Embodiments 1, 2, and 3 is that the jet generating system 2 includes a mixing box 201 fixedly installed at one end of the discharge pipe. The mixing box 201 has a mixing chamber 202 inside, and a spiral guide vane 203 is provided inside the mixing chamber 202. Several protrusions 204 are provided on the surface of the spiral guide vane 203. A water nozzle pipe 205 is provided on the upper surface of the mixing chamber 202, and the water nozzle pipe 205 is fixedly installed through the mixing box 201 in an inclined state. On the surface of 01, the abrasive and water are mixed evenly, which enhances the jet impact force. The mixing chamber 202 inside the mixing box 201 is equipped with spiral guide blades 203. The spiral guide blades 203 can guide the abrasive and water to flow in a spiral direction, prolonging the mixing path and mixing time. At the same time, the protrusions 204 on the surface of the blades can stir and agitate the mixed materials, break up the abrasive agglomeration, and make the abrasive evenly dispersed in the water to form a uniform abrasive suspension. This avoids abrasive sedimentation, which can lead to uneven jet impact force and improve the processing effect of the jet.

[0051] Specifically, refer to Figures 1 to 4A booster pump 206 is installed at one end of the mixing chamber 202 shown. A focusing nozzle tube 207 is connected to one end of the booster pump 206 via a flange. A control device is connected to one end of the focusing nozzle tube 207 to increase the jet pressure and enhance the processing capability. The booster pump 206 at one end of the mixing chamber 202 can pressurize the mixed abrasive suspension, which can significantly increase the outlet pressure and velocity of the abrasive jet, so that the abrasive particles can obtain greater kinetic energy, enhance the impact force of the jet and the material removal capability, and can be adapted to the processing of harder materials, thus expanding the application range of the device.

[0052] Working principle: First, the abrasive is fed into the abrasive supply vessel 101 and falls onto the surface of the discharge plate 102. Simultaneously, the drive motor is started to rotate the first rotating rod. The first rotating rod drives the second rotating rod on one side to rotate through the pinched bevel gear 106. During the rotation of the first rotating rod, the stirring blade and the rotating plate 103 are also rotated. The stirring blade crushes the abrasive during the rotation. During the crushing process, the abrasive falls down from the discharge trough 104. At the same time, the rotation of the scraper 107 scrapes the abrasive on the surface of the discharge plate 102 into the discharge trough 104 and falls down. It is then fed into the discharge pipe through the guide seat. Meanwhile, the rotation of the second rotating rod drives the spiral conveying blade 105 to rotate, conveying the abrasive to the jet generation system 2. The abrasive is then conveyed to the mixing box 20. Inside the mixing chamber 202, an external water pipe is connected to the water nozzle pipe 205, allowing the external water flow to come into contact with the abrasive. The water flow and abrasive move under the guidance of the spiral guide vane 203. The booster pump 206 transports the water flow and abrasive to the inside of the focusing nozzle pipe 207 and sprays them outward from the jet pipe 3 through the control valve group 208. During the spraying process, external water is input into the annular water pipe 8 through the water inlet pipe and then evenly transported to the water delivery pipe 5. It is then sprayed outward from the nozzle component 6 towards the center. At the same time, the control system 9 is activated to energize the spiral magnetic coil 402 in the spiral magnetic sensor assembly 4 to generate magnetic force, causing the abrasive to be in a suspended motion state. This concentrates the suspended abrasive in the central region of the jet, maximizing the use of jet energy to achieve focused jet spraying of the abrasive jet.

[0053] When the spiral magnetic sensor assembly 4 needs to be installed, the operator inserts the movable interface 701 on the outer surface of the shielding shell 401 into the annular groove 703 on the surface of the mounting ring 702, and then rotates it so that the through hole on the surface of the movable interface 701 coincides with the through hole on the surface of the mounting ring 702. Then, the electric push rod 706 is activated to drive the sliding plate 705 to move. The sliding plate 705 drives the insertion rod 704 on one side to slide and insert into the interior of the movable interface 701 and the mounting ring 702, thereby quickly installing and fixing the spiral magnetic sensor assembly 4.

[0054] It should be noted that: after connecting the system device and checking the device's sealing, the metal abrasive is then filled in. Before turning on the alternating electric field, a control experiment on impact sandstone is conducted and the experimental results, including the depth and diameter of the erosion pit, are recorded.

[0055] Furthermore, the spiral magnetic sensor assembly 4 is installed on the nozzle mounting device, and the alternating current frequency Hi and the position Li of the movable interface 701 are set in the control system 9 according to the actual working conditions.

[0056] Furthermore, the control system 9 can control the alternating current according to the set frequency. The alternating current flows through the spiral inductor to generate an alternating electric field, the field strength of which is denoted as E1.

[0057] Furthermore, the abrasive supply system 1 and the jet generation system 2 are turned on, and the jet pressure in the jet generation system 2 is set to P1, and the abrasive mass flow rate is recorded as m1.

[0058] Furthermore, the control valve group 208 of the jet generation system 2 is turned on to conduct an experiment. The experimental results are recorded and compared with the experimental results of the control group. The impact depth improvement efficiency D = erosion depth of the experimental group - erosion depth of the control group × 100%, and the diameter reduction R = - erosion diameter of the experimental group - erosion diameter of the control group × 100%.

[0059] Furthermore, after the experiment is completed, the experimental results are recorded, and then the alternating current frequency Hi is adjusted to conduct multiple sets of experiments. After the experiment is completed, the relationship between the current frequency and the destructive effect is fitted into a curve equation and written into the control center.

[0060] Furthermore, after adjusting the relationship between the enrichment effect and the alternating current frequency, the optimal current frequency is controlled and the position Li of the movable interface 701 is adjusted to study the relationship between the electric field length and the destructive effect, and the data is recorded and imported into the control system 9.

[0061] Furthermore, by controlling the optimal current frequency and the position of the moving interface, the relationship between jet pressure, abrasive mass flow rate and damage effect was studied, and the results were recorded and imported into the control center.

[0062] Furthermore, the relationship between each parameter and the damage effect is machine learning-based to establish mathematical equations between the parameters and the damage effect, which are then input into the control center. Subsequent experiments can directly input the parameters into the control system 9 according to the actual working conditions and cutting depth or diameter requirements. The system can automatically adjust the values ​​of the above parameters without the need for repeated testing.

[0063] A method of using an abrasive jet focusing and energy-concentrating injection device enhanced by an alternating electric field includes the following steps:

[0064] S1. Connect the abrasive supply system 1, the jet generation system 2 and the spiral magnetic sensor assembly 4, and check the air / water tightness of each system to ensure the sealing effect of air / water tightness, and then fill the abrasive into the abrasive supply system 1.

[0065] S2. Place the spiral magnetic sensor assembly 4 on the outer surface of the spray pipe 3 and quickly install it on one end of the spray pipe 3 using the quick-install assembly 7. After installation, the spiral magnetic sensor assembly 4 will evenly wrap around the outer surface of the water pipe 5 and the nozzle 6.

[0066] S3. Connect the power supply line of the spiral magnetic coil 402 in the spiral magnetic sensor assembly 4 to the power output terminal of the control system 9. Perform initialization settings in the human-machine interface of the control system 9, and then start the spiral magnetic sensor assembly 4.

[0067] S4. Start the spiral magnetic sensor assembly 4 through the control system 9 to generate current in the spiral magnetic coil 402, and set the abrasive jet impact time according to the test requirements.

[0068] S5. After completing a single impact, the spiral magnetic sensor assembly 4 is shut down through the control system 9. After observing the impact effect, the current parameters of the spiral magnetic sensor assembly 4 are adjusted, and then the next impact operation is performed.

Claims

1. A device for enhancing the focused spraying of abrasive jets using an alternating electric field, characterized in that, It includes an abrasive supply system (1), a jet generating system (2) is provided on one side of the abrasive supply system (1), a jet generating system (2) is provided on one side of the jet generating system (2), a jet pipe (3) is provided on one end of the jet pipe (3), a spiral magnetic sensor assembly (4) is installed at one end of the jet pipe (3), and the spiral magnetic sensor assembly (4) is electrically connected to a control system (9). The spiral magnetic sensor assembly (4) includes a shielding shell (401) installed on the outer surface of one end of the injection pipe (3). A spiral magnetic coil (402) is provided on the inner wall of the shielding shell (401). A sealing groove is opened on the inner wall of the shielding shell (401). A sealing plate (403) is slidably installed on the inner wall of the sealing groove. The sealing plate (403) is fixedly installed on the outer surface of the injection pipe (3). The side surface of the sealing plate (403) is provided with a plurality of water pipes (5) arranged in a ring array, and the surface of the plurality of water pipes (5) is provided with a plurality of nozzles (6).

2. The device for enhancing abrasive jet energy concentration spraying using an alternating electric field according to claim 1, characterized in that, The outer surfaces of the shielding shell (401) and the jet pipe (3) are provided with quick-installation components (7). The quick-installation components (7) include a movable interface (701) fixedly installed on the outer surface of the shielding shell (401). The outer surface of the jet pipe (3) is provided with an installation ring (702). The side surface of the installation ring (702) is provided with an annular groove (703). The movable interface (701) is adapted to the annular groove (703). The surface of the installation ring (702) and the movable interface (701) are slidably connected by a plug rod (704). One end of several plug rods (704) is fixedly installed with a sliding plate (705). One side of the jet generation system (2) is fixedly installed with an electric push rod (706). One end of the electric push rod (706) is fixedly installed with a sliding plate (705).

3. The device for enhancing abrasive jet energy concentration and spraying using an alternating electric field as described in claim 1, characterized in that, A first pipe is fixedly installed at one end of several water supply pipes (5). The first pipe passes through the surface of the mounting ring (702) and is slidably installed inside the sliding plate (705). An annular water pipe (8) is fixedly installed at one end of several first pipes. A water inlet pipe is provided on one side of the annular water pipe (8).

4. The device for enhancing abrasive jet focusing and spraying using an alternating electric field according to claim 1, characterized in that, The abrasive supply system (1) includes an abrasive supply vessel (101), an inlet pipe is provided on the upper surface of the abrasive supply vessel (101), a discharge plate (102) is provided inside the abrasive supply vessel (101), the discharge plate (102) is hollow inside, a rotating plate (103) is rotatably connected inside the discharge plate (102), and discharge grooves (104) are provided on the surfaces of the rotating plate (103) and the discharge plate (102).

5. The device for enhancing abrasive jet focusing and spraying using an alternating electric field according to claim 4, characterized in that, The inner wall of the abrasive supply vessel (101) is provided with a guide seat. The inside of the rotating plate (103) is fixedly installed with a first rotating rod. The first rotating rod is rotatably connected to the inside of the discharge plate (102). The side surface of the abrasive supply vessel (101) is provided with a discharge pipe. The inside of the discharge pipe is rotatably connected with a second rotating rod. The outer surface of the second rotating rod is provided with a spiral conveying blade (105). The outer surface of the first rotating rod is provided with a stirring blade.

6. The device for enhancing abrasive jet focusing and spraying using an alternating electric field according to claim 5, characterized in that, The first rotating rod and the second rotating rod are rotatably connected inside the guide seat. One end of the first rotating rod and the second rotating rod are provided with a bevel gear (106). The bevel gears (106) on both sides are meshed with each other. The inner bottom wall of the abrasive supply vessel (101) is provided with a drive motor. The output end of the drive motor is fixedly installed with the first rotating rod. The outer surface of the first rotating rod is provided with a scraper (107). The scraper (107) is in close contact with the surface of the feed plate (102).

7. The device for enhancing abrasive jet focusing and spraying using an alternating electric field according to claim 1, characterized in that, The jet generating system (2) includes a mixing box (201) fixedly installed at one end of the discharge pipe. The mixing box (201) has a mixing chamber (202) inside. The mixing chamber (202) has a spiral guide vane (203) inside. The surface of the spiral guide vane (203) has a plurality of protrusions (204). The upper surface of the mixing chamber (202) has a water nozzle pipe (205) fixedly installed through the surface of the mixing box (201) in an inclined state.

8. The device for enhancing abrasive jet energy concentration spraying using an alternating electric field according to claim 7, characterized in that, A booster pump (206) is provided at one end of the mixing chamber (202). A focusing nozzle pipe (207) is connected to one end of the booster pump (206) via a flange. A control valve group (208) is connected to one end of the focusing nozzle pipe (207). An injection pipe (3) is fixedly installed at the output end of the control valve group (208).

9. A method of using an alternating electric field enhanced abrasive jet focusing spraying device, wherein the method employs the alternating electric field enhanced abrasive jet focusing spraying device as described in any one of claims 1-8, characterized in that: Includes the following steps: S1. Connect the abrasive supply system (1), the jet generation system (2) and the spiral magnetic sensor assembly (4), and check the air and water tightness of each system to ensure the sealing effect of air and water tightness, and then fill the abrasive into the abrasive supply system 1. S2. Place the spiral magnetic sensor assembly (4) on the outer surface of the jet pipe (3) and quickly install it on one end of the jet pipe (3) using the quick-install assembly 7. After installation, the spiral magnetic sensor assembly (4) will evenly wrap around the outer surface of the water pipe (5) and the nozzle (6). S3. Connect the power supply line of the spiral magnetic coil (402) in the spiral magnetic sensor assembly (4) to the power output terminal of the control system (9), perform initialization settings in the human-machine interface of the control system (9), and then start the spiral magnetic sensor assembly (4). S4. Start the spiral magnetic sensor assembly (4) through the control system (9) to generate current in the spiral magnetic coil (402), and set the abrasive jet impact time according to the test requirements; S5. After completing a single impact, the spiral magnetic sensor assembly (4) is shut down through the control system (9). After observing the impact effect, the current parameters of the spiral magnetic sensor assembly (4) are adjusted, and then the next impact operation is performed.

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