A water spray circulation system for ultrasonic testing

Abstract

This utility model provides a water spray circulation system for ultrasonic testing, comprising: a water tank; a water pump, the inlet of which is connected to the water tank; a gas separation device, including a separation chamber and a defoaming plate, the separation chamber being connected to the outlet of the water pump, the inlet of the separation chamber being opposite to the defoaming plate, so that the water flow impacts the defoaming plate and flows downward along the plate surface to form laminar flow; and a water sprayer connected to the separation chamber, which contains an ultrasonic probe. The water spray circulation system for ultrasonic testing produces a water column with fewer bubbles, resulting in high detection accuracy for the tested object.

Description

Technical Field

[0001] This application relates to the field of ultrasonic testing technology, and in particular to a water spray circulation system for ultrasonic testing. Background Technology

[0002] Water jet ultrasonic testing has been widely used in the field of automated ultrasonic testing due to its high practicality. This process relies on a stable jet of water from a nozzle to transmit ultrasonic signals between the probe and the workpiece being tested. However, air bubbles embedded in the water jet can affect its quality, thus severely impacting the interpretation of the test results. Utility Model Content

[0003] In view of this, the purpose of this application is to propose a water jet circulation system for ultrasonic testing that produces fewer water bubbles in the water jet, thereby improving the accuracy of the test results.

[0004] To achieve the above objectives, this application provides a water spray circulation system for ultrasonic testing, comprising: Water tank; A water pump, the inlet of which is connected to the water tank; A gas separation device includes a separation chamber and a defoaming plate. The separation chamber is connected to the outlet of the water pump, and the inlet of the separation chamber is opposite to the defoaming plate, so that the water flow impacts the defoaming plate and flows downward along the plate surface to form laminar flow. A water sprayer is connected to the separation box and contains an ultrasonic probe.

[0005] Optionally, it also includes an air blowing assembly, which includes an air compressor and an air nozzle. The air outlet of the air compressor is connected to the air nozzle. The air nozzle is located above the water sprayer, and its air spray end is opposite to the position of the test piece, so as to blow away the water droplets splashed on the test piece by the water jet.

[0006] Optionally, the water sprayer has a connected mounting cavity and a water inlet cavity. The water inlet cavity is connected to the separation box. An ultrasonic probe is installed at the bottom of the mounting cavity. The probe end of the ultrasonic probe is positioned opposite the test piece so that water flows out of the mounting cavity and sprays towards the test piece to form a detection coupling water column.

[0007] Optionally, the defoaming plate is spirally arranged in the height direction of the separation box.

[0008] Optionally, a filter is provided between the water pump and the separation tank to filter impurities in the water flow.

[0009] Optionally, a flow regulator is provided between the separation box and the water sprayer to adjust the state of the water jet sprayed by the water sprayer.

[0010] Optionally, a water storage component is also included, which includes a water tank located below the sprayer and communicates with the water tank.

[0011] Optionally, the water storage assembly further includes a water storage container, a level gauge, and a circulation pump. The water storage container is connected to the outlet of the water tank, the inlet of the circulation pump is connected to the water storage container, and its outlet is connected to the water tank. The level gauge is installed inside the water storage container to control the start or stop of the circulation pump based on the water level detected by the level gauge in the water storage container.

[0012] Optionally, the level gauge includes an upper level gauge and a lower level gauge; The circulating pump has a start-up condition and a stop condition. When the circulating pump is in the start-up condition, the water level in the water storage container is above the measuring end of the upper liquid level gauge. When the circulating pump is in a stopped state, the water level in the water storage container is below the measuring end of the lower level gauge.

[0013] Optionally, the surface of the defoaming plate is provided with spikes to puncture air bubbles in the laminar flow.

[0014] As can be seen from the above, the circulation system provided in this application includes a water tank, a water pump, a separation device, and a water sprayer. The stable water supply from the water tank and the water pump provides continuous power to the system, ensuring uninterrupted testing. In the gas separation device, the relative positions of the water inlet of the separation tank and the defoaming plate cause the water flow to impact the plate surface, forming laminar flow. This effectively reduces water flow turbulence, and the laminar flow state is conducive to the floating and breaking of bubbles. Furthermore, the laminar water flow is thin, and the rising path of the bubbles is short, which is beneficial for bubble breakage, thereby significantly reducing the bubble content in the water and avoiding interference from bubbles to the propagation of ultrasonic waves, significantly improving the signal stability and accuracy of ultrasonic testing. The degassed water flow enters the water sprayer and is sprayed out to form a water column, allowing ultrasonic waves to detect the tested part with the help of the water column, ultimately achieving efficient and accurate detection of internal defects in the tested part. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the circulatory system is shown for an embodiment of this application; Figure 2 This is a schematic diagram showing the separation device according to an embodiment of this application; Figure 3A cross-sectional view of a water sprayer is shown for an embodiment of this application; Figure 4 This is a physical diagram showing the shape of the water column in an embodiment of this application; Figure 5 This diagram illustrates the effect of the air blowing assembly on the test results in an embodiment of this application.

[0017] Reference numerals: 01, ultrasonic probe; 1, water tank; 2, water pump; 3, filter; 4, separation device; 41, separation box; 42, defoaming plate; 5, air blowing assembly; 51, air compressor; 52, air nozzle; 6, flow regulator; 7, water sprayer; 71, mounting cavity; 72, water inlet cavity; 8, water storage assembly; 81, water tank; 82, water storage container; 83, circulating pump; 84, level gauge. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Ultrasonic nondestructive testing (NDT) is a key technology for ensuring product quality in the industrial field. Its core lies in accurately identifying internal defects in materials through the propagation characteristics of ultrasonic waves. In the inspection of composite material structures, problems such as porosity, inclusions, and delamination, if not detected in time, can lead to sudden failure of the component under stress, causing serious safety hazards. Therefore, improving inspection accuracy has always been the core goal of this technology's development, and the coupling effect between the probe and the workpiece is the key factor limiting accuracy.

[0021] Water, a common coupling agent, eliminates air gaps between the probe and the workpiece surface, ensuring efficient ultrasonic wave transmission. Immersion and spray coupling methods each have their strengths: immersion coupling achieves stable coupling by completely submerging the workpiece in water, resulting in highly repeatable test data. However, it is limited by the water tank volume and the workpiece's water resistance, rendering it ineffective for large components or water-sensitive materials. For example, large composite panel panels in the aerospace field cannot be entirely submerged in water, and prolonged immersion could lead to internal moisture absorption and deformation, affecting subsequent performance.

[0022] The emergence of water jet coupling effectively compensates for this shortcoming. It establishes an ultrasonic propagation channel through a continuous water jet formed by nozzles, eliminating the need for large water tanks and minimizing the contact time between the workpiece and water, thus significantly expanding the applicability of ultrasonic testing. Particularly in the automated inspection of large, complex structural components, the water jet process can be combined with robotic arms to flexibly adjust the inspection angle, adapting to complex surfaces such as curved and irregular shapes. However, the "quality" of the water jet presents a new challenge: tiny air bubbles in the water scatter ultrasonic waves, causing signal attenuation; falling water droplets impacting the water jet disrupt its continuity, creating signal interference; and unstable water flow velocity causes fluctuations in sound path, affecting defect location accuracy. These factors, when combined, may mask true defect signals or generate false alarms, greatly complicating the interpretation of inspection results.

[0023] As industrial manufacturing demands increasingly higher material performance, the application of composite materials is becoming more widespread, leading to a greater difficulty in detecting their internal defects. Further optimization of water jet ultrasonic testing technology, especially the precise control of water column stability, is crucial for its widespread application in high-end manufacturing. Solving problems related to water quality, air bubbles, and water flow interference not only improves testing accuracy but also provides reliable technical support for the quality control of large and complex components.

[0024] To address the aforementioned problems, this application discloses a water spray circulation system for ultrasonic testing.

[0025] The following is in conjunction with the appendix Figure 1-5 The embodiments of this application will be described in detail below.

[0026] like Figure 1 and Figure 2 As shown, a water spray circulation system for ultrasonic testing includes: Water tank 1; Water pump 2, whose inlet is connected to the water tank 1; The gas separation device 4 includes a separation box 41 and a defoaming plate 42. The separation box 41 is connected to the outlet of the water pump 2, and the inlet of the separation box 41 is opposite to the defoaming plate 42 so that the water flow impacts the defoaming plate 42 and flows downward along the plate surface to form laminar flow. The water sprayer 7 is connected to the separation box 41, and an ultrasonic probe 01 is installed inside it.

[0027] In addition, the defoaming plate 42 is spirally arranged in the height direction of the separation box 41. The surface of the defoaming plate 42 is provided with spikes to puncture air bubbles in the laminar flow.

[0028] Specifically, water tank 1 can be welded from 304 stainless steel, with its volume designed according to the needs of the testing scenario. The inner wall is polished to reduce scale buildup. Water tank 1 has an openable inspection cover on top for easy periodic maintenance and cleaning. Water tank 1 integrates a float level sensor; when the water level falls below a set threshold, the control system triggers a water replenishment reminder or automatic water replenishment (it can be connected to an external water pipe and equipped with a solenoid valve).

[0029] Pump 2 can be a corrosion-resistant stainless steel centrifugal pump, whose flow rate can be adjusted according to the testing requirements (usually 10-50L / min), and the head is designed to be 5-15m to ensure that the water flow can overcome the system resistance and form a stable pressure.

[0030] The separation chamber 41 in the gas separation device 4 has a cylindrical shell with an automatic exhaust valve at the top. The water inlet is located on the upper side of the separation chamber 41 and is connected to the outlet of the water pump 2 via a pressure-resistant pipe. The defoaming plate 42 has a thickness of 3-5mm and is arranged in a spiral descending structure along the height direction inside the separation chamber 41 (e.g., pitch 10-15cm). The defoaming plate 42 is positioned opposite the water inlet of the separation chamber 41. After the water flows out from the inlet, it first impacts the starting end of the spiral defoaming plate 42. Because the impact force is buffered by the surface of the defoaming plate 42, the water flows downward along the spiral path, forming a stable laminar flow. During the laminar flow, air bubbles in the water are more likely to rise due to buoyancy, and the laminar flow is thin, resulting in a short rising path for the air bubbles, which is beneficial for defoaming. The surface of the defoaming plate 42 is uniformly distributed with conical spikes (1-3mm high) and is lower than the laminar liquid surface to puncture the air bubbles. The released gas accumulates at the top of the separation chamber 41 and is discharged through the exhaust valve. The degassed water flows out from the outlet at the bottom of the separator 41 and enters the water sprayer 7. The water sprayer 7 is equipped with an ultrasonic probe 01. Figure 3 The detection end face of the ultrasonic probe 01 is positioned opposite the water nozzle of the water sprayer 7 so as to form an ultrasonic water column to detect the object being tested.

[0031] In this embodiment, the stable water supply from water tank 1 and water pump 2 provides continuous power to the system, ensuring uninterrupted testing. In the gas separation device 4, the relative positions of the inlet of the separation tank 41 and the defoaming plate 42 cause the water flow to impact the plate surface, forming laminar flow. This effectively reduces water flow turbulence, and the laminar flow state facilitates the floating and breaking of bubbles. Furthermore, the thin laminar water flow and short rising path of the bubbles further promote bubble breakage, significantly reducing the bubble content in the water and preventing bubbles from interfering with ultrasonic wave propagation, thus significantly improving the signal stability and accuracy of ultrasonic testing. The degassed water flows into the water sprayer 7 and is ejected to form a water column, allowing ultrasonic waves to detect the tested part with the help of the water column. This ultimately achieves efficient and accurate detection of internal defects in the tested part. The water column ejected by the water sprayer 7 is like... Figure 4 As shown, the water column is in a uniform and stable jet state, which is beneficial to improving detection accuracy.

[0032] In some embodiments, such as Figure 1 As shown, the system also includes an air blowing assembly 5, which includes an air compressor 51 and a nozzle 52. The air outlet of the air compressor 51 is connected to the nozzle 52. The nozzle 52 is located above the water sprayer 7, and its air spray end is opposite to the position of the test piece, so as to blow away the water droplets splashed on the test piece by the water jet.

[0033] For example, air compressor 51 serves as the core air source. A small, oil-free, silent air compressor 51 is selected, with a rated discharge pressure set at 0.4-0.6 MPa and a discharge volume of 0.1-0.3 m³ / min. This provides sufficient airflow pressure while avoiding excessive noise from affecting the testing environment. The air outlet of air compressor 51 is connected to nozzle 52 via a pressure-resistant PU tube (inner diameter 8-12 mm). A precision pressure regulating valve and pressure gauge are connected in series in the middle of the pipe to stably control the output air pressure at 0.2-0.3 MPa, ensuring moderate blowing force. This effectively blows away water droplets without interfering with the stability of the water column due to excessive airflow.

[0034] The nozzle 52 is a flat, fan-shaped copper nozzle with a nozzle width of 5-8mm and a length adapted to the detection width of the workpiece. This structure can form a uniform fan-shaped airflow surface, covering the area where the water column impacts the workpiece. The nozzle 52 is fixed 5-10cm above the water sprayer 7 by an adjustable bracket. The bracket can be finely adjusted in the horizontal and vertical directions to maintain a distance of 30-50mm between the nozzle tip and the surface of the workpiece, and the nozzle direction is at an angle of 30°-45° to the surface of the workpiece. This angle design allows the airflow to blow obliquely towards the water droplets, using the impact force of the airflow to push the splashed water droplets away from the detection area, while avoiding the airflow directly impacting the detection water column and causing its shape to become disordered.

[0035] In this embodiment, when the water jet is sprayed from the water jet nozzle 7 and impacts the surface of the object being tested, scattered water droplets are inevitably generated. If these water droplets fall onto the water jet, they may interfere with the propagation path of the ultrasonic waves or affect the clarity of the detection image. The airflow ejected from the jet nozzle 52 can blow the water droplets away in time before they fall, preventing them from falling onto the water jet and affecting its stability, thereby improving the detection accuracy.

[0036] like Figure 5 As shown, Figure 5 This image shows a comparison of ultrasonic testing results for workpieces with and without an air blowing device. The left side shows the test results without the air blowing device, and the right side shows the test results with the air blowing device. The black dots in the black circles represent the impact of water droplets disrupting the water column's stability, thus interfering with the ultrasonic test signal. The formation of these black dots is as follows: During water spray testing, when the water column contacts the workpiece surface, it scatters in all directions. Water droplets above the water column fall due to gravity and impact the column, disrupting its stability and interfering with the ultrasonic test signal. This results in the black dots circled in red. With an air blowing device, compressed air is ejected through the nozzle, blowing away the water droplets falling above the water column, reducing disruption to its stability, and thus minimizing the occurrence of these black dots, making the test results more reliable.

[0037] In some embodiments, such as Figure 1 and Figure 3 As shown, the water sprayer 7 has a connected mounting cavity 71 and a water inlet cavity 72. The water inlet cavity 72 is connected to the separation box 41. An ultrasonic probe 01 is installed at the bottom of the mounting cavity 71. The detection end of the ultrasonic probe 01 is opposite to the test piece, so that the water flows out of the mounting cavity 71 and sprays towards the test piece to form a detection coupling water column.

[0038] Specifically, the water sprayer 7 can be connected to the ultrasonic testing system scanning module via a probe. The water sprayer 7 is mounted on the probe via a telescopic adjustable bracket to adjust the spray angle and the distance between the water sprayer 7 and the object being tested. The ultrasonic probe 01 is located inside the mounting cavity 71 and can be connected to the signal processing unit within the scanning module via a dedicated shielded cable. For example, the cable adopts a double-layer shielding design (the inner layer is copper mesh shielding, and the outer layer is aluminum foil shielding), which can effectively isolate external electromagnetic interference (such as high-frequency noise generated by industrial equipment) and ensure the integrity of ultrasonic transmission and reception signals.

[0039] The mounting cavity 71, also known as the probe chamber, houses the ultrasonic probe 01 at its bottom, with the probe end facing the test piece. This relatively fixed position ensures a stable transmission and reception path for the ultrasonic waves. The water inlet cavity 72, connected to the separation box 41, serves as the channel for water to enter the sprayer 7. To ensure uniformity and stability of the water inlet, each side of the water inlet cavity 72 has a symmetrically distributed inlet, allowing water to enter simultaneously from both sides. This creates a counter-current flow within the water inlet cavity 72 before smoothly flowing into the mounting cavity 71, preventing flow deviation due to unilateral water inlet and ensuring optimal jet performance. The nozzle of the sprayer 7 employs a Vidosinski curve design, which gradually reduces the lateral pressure gradient and radial velocity component of the water entering the nozzle's contraction point. As the water flows from the water inlet cavity 72 into the nozzle, its velocity gradually increases smoothly along the curved inner cavity, minimizing energy loss and effectively suppressing flow disturbances. Ultimately, the detection coupling water column ejected from the nozzle becomes a relatively stable jet stream. This stable jet stream reduces interaction with air, lowers the probability of bubble formation, and maintains a stable direction and shape, ensuring good coupling with the ultrasonic probe's 01 detection end and the surface of the test piece. This ensures that ultrasonic waves can propagate efficiently and without interference, thereby improving the accuracy and reliability of ultrasonic testing.

[0040] In this embodiment, the connection between the mounting cavity 71 and the inlet cavity 72 inside the water sprayer 7 allows the water flow treated by the separation box 41 to smoothly enter the mounting cavity 71, wrap around the ultrasonic probe 01, and form a detection coupling water column. The water flow direction is as follows: Figure 3 As indicated by the middle arrow, this structure ensures that the water flow continuously and stably fills the space between the probe and the test piece, providing a good medium for ultrasonic wave propagation, reducing signal attenuation, and at the same time, the water flow can carry away the heat generated by the probe during operation, ensuring stable probe operation and improving the accuracy and continuity of detection.

[0041] In some embodiments, such as Figure 3 As shown, a filter 3 is provided between the water pump 2 and the separation tank 41 to filter impurities in the water flow.

[0042] For example, filter 3 can adopt a cylindrical structure, with the outer shell made of high-strength engineering plastic or stainless steel, possessing good pressure resistance and corrosion resistance, and able to adapt to the pressure environment of the water flow within the system. Filter 3 typically contains multiple layers of filtration components. The outermost layer is a coarse filter screen with a pore size generally between 10-20 μm, which can filter out larger impurities in the water flow, such as silt and metal fragments. The middle layer is a precision filter screen with a pore size reduced to 5-10 μm, used to intercept medium-sized particulate impurities. The inner layer is an activated carbon filter element, which can adsorb tiny suspended particles, organic matter, and odors in the water flow, further improving water cleanliness. These filtration components are designed to be detachable, allowing for easy replacement or cleaning of the filter 3 outer shell after a period of use, ensuring continuous filtration effectiveness.

[0043] Filter 3 is connected to the outlet of water pump 2 and the inlet of separator 41 via flange or threaded interface. The connection is sealed with a rubber sealing ring to prevent leakage. Filter 3 is also equipped with a pressure gauge and a drain valve. The pressure gauge monitors the pressure difference before and after filter 3 in real time. When the pressure difference exceeds the set value, it indicates that the filter assembly is clogged with a large amount of impurities and needs to be cleaned or replaced promptly. The drain valve is used to discharge wastewater and impurities from inside filter 3 during cleaning, making operation simple and convenient.

[0044] In this embodiment, the water flow filtered by filter 3 enters the sprayer 7, preventing impurities from clogging the inlet and nozzle of the sprayer 7. This ensures that the sprayer 7 can stably spray a detection coupling water column with a regular shape, guaranteeing the smooth progress of ultrasonic testing. Furthermore, the clean water flow reduces wear and contamination on the ultrasonic probe 01, extending its service life and lowering equipment maintenance costs. Finally, the filtered water flows throughout the entire circulation system, reducing wear on the water pump 2, pipes, and other equipment, thus improving the overall system's operational stability and service life.

[0045] In some embodiments, a flow regulator 6 is provided between the separation box 41 and the water sprayer 7 to adjust the state of the water jet sprayed by the water sprayer 7.

[0046] For example, the flow regulator 6 can employ a precision needle valve or an electromagnetic proportional valve structure. The needle valve regulator consists of a valve body, a valve core, and an adjustment knob. The valve body is made of brass, and the internal valve core has a conical structure. Continuous flow regulation is achieved by rotating the knob to change the gap between the valve core and the valve seat, with an adjustment accuracy of up to 0.1 L / min. The electromagnetic proportional valve controls the valve opening via an electrical signal, working in conjunction with the system PLC to achieve automated regulation with a response time of less than 0.5 seconds. Both types of valves connect to the pipeline via threaded interfaces, with PTFE sealing tape at the interfaces to ensure airtightness. Pressure gauges are installed at both ends of the valve body to monitor water pressure changes before and after regulation in real time (the range is typically 0-1 MPa).

[0047] In this embodiment, the flow regulator 6 can precisely control the water column shape. When detecting thin-walled workpieces, the flow rate is reduced to form a thin water column, avoiding excessive impact force that could cause workpiece deformation. When detecting thick-walled workpieces, the flow rate is increased to form a robust water column, ensuring a stable coupling path. When the compensation system pressure fluctuates or the output pressure of the water pump 2 changes due to voltage fluctuations, the flow regulator 6 adjusts the flow rate through valve core feedback to reduce the flow fluctuations entering the sprayer 7, ensuring jet stability.

[0048] In some embodiments, the circulation system further includes a water storage component 8, which includes a water tank 81 located below the sprayer 7 and communicates with the water tank 1.

[0049] In addition, the water storage assembly 8 also includes a water storage container 82, a level gauge 84, and a circulation pump 83. The water storage container 82 is connected to the outlet of the water tank 81, the inlet of the circulation pump 2 is connected to the water storage container 82, and its outlet is connected to the water tank 1. The level gauge 84 is installed inside the water storage container 82 to control the start or stop of the circulation pump 83 according to the water level detected by the level gauge 84 in the water storage container 82.

[0050] Specifically, the water tank 81 can be made of 304 stainless steel by stamping, with an overall inverted trapezoidal structure (e.g., upper opening size 50cm × 30cm, lower opening size 20cm × 10cm, depth 15cm). The inner wall is polished to reduce water flow resistance. A 5cm diameter water outlet is located at the center of the bottom, with a built-in removable stainless steel filter (1mm aperture) to intercept workpiece debris and impurities that may mix into the water during the testing process, preventing blockage of subsequent pipes. The water tank 81 is fixed to the water sprayer 7 30-50cm directly below it by a bracket. The bracket height is adjustable to accommodate different sized test pieces.

[0051] The water storage container 82 is a box-shaped structure with a maintenance cover with a sealing ring on the top. Its upper side is connected to the outlet of the water tank 81 via a PVC pipe. The level gauge 84 is an immersion-type hydrostatic level sensor, with its probe fixed to the inner wall of the water storage container 82 to detect the liquid level. The circulation pump 83 is a miniature corrosion-resistant centrifugal pump. Its inlet is connected to the lower outlet of the water storage container 82 via a flexible hose, and its outlet is connected to the water tank 1 via a pipe. A check valve is installed on the pipe to prevent backflow. The level gauge 84 and the circulation pump 83 are linked through a control system. When the water level in the water storage container 82 reaches the upper threshold, the circulation pump 83 automatically starts; when the water level drops to the lower threshold, the circulation pump 83 stops operating.

[0052] In this embodiment, the water tank 81 can recycle the test water, which, after passing through the water storage container 82, is returned to the water tank 1 for reuse via the circulation pump 83, significantly reducing water consumption. The buffering effect of the water storage container 82 prevents drastic fluctuations in the water level of the water tank 1 due to direct water loss from spraying. Combined with the automatic control of the level gauge 84 and the circulation pump 83, the water level in the main water tank 1 can be stabilized within a set range, ensuring that the water pump 2 can always draw a sufficient flow of water and avoid testing interruptions due to water shortage. The linkage control of the level gauge 84 and the circulation pump 83 enables unmanned management of the water storage and return process, eliminating the need for frequent manual water addition or drainage. This is particularly suitable for continuous testing scenarios in automated production lines, reducing the workload of operators.

[0053] In some embodiments, the level gauge 84 includes an upper level gauge 84 and a lower level gauge 84; The circulating pump 83 has a start-up condition and a stop condition. When the circulating pump 83 is in the start-up condition, the water level in the water storage container 82 is above the measuring end of the upper liquid level gauge 84. When the circulating pump 83 is in a stopped state, the water level in the water storage container 82 is below the measuring end of the lower level gauge 84.

[0054] For example, the upper level gauge 84 is installed on the upper part of the inner wall of the water storage container 82, with its measuring end 20% of the total height of the container (e.g., when the container height is 100cm, the measuring end of the upper level gauge 84 is located at 80cm), used to monitor the highest water level threshold; the lower level gauge 84 is installed on the lower part of the inner wall of the container, with its measuring end 30% of the total height of the container (e.g., at 30cm), used as the lowest water level threshold. The sensor is fixed by a waterproof bracket, which can be adjusted up and down along the inner wall of the container to adapt to water storage containers 82 of different volumes (50-300L).

[0055] The level gauge 84 is connected to the relay module in the system control cabinet via a signal line, forming a closed-loop control circuit. When the water level in the water storage container 82 rises to submerge the measuring end of the upper level gauge 84, the upper level gauge 84 sends an electrical signal to the control cabinet, triggering the relay to operate. The circulating pump 83 immediately switches to the start-up mode, pumping the water in the water storage container 82 to the water tank 1. As the water level drops, when the measuring end of the lower level gauge 84 emerges from the water surface (i.e., the water level is lower than the threshold of the lower level gauge 84), the lower level gauge 84 sends a stop signal, and the circulating pump 83 is de-energized and stops operating.

[0056] In this embodiment, the dual level gauges 84 form a clearly defined water level control range, ensuring that the water level in the storage container 82 always fluctuates within a safe range. This avoids both overflow due to excessively high water levels and dry running of the circulation pump 83 when the water level is too low (dry running can easily lead to overheating and damage to the pump body). When batch testing different workpieces, water consumption may change with the adjustment of the sprayer flow rate (e.g., from 10L / min to 30L / min). The wide-range control of the dual level gauges can adapt to such fluctuations. When water consumption increases sharply, the water level in the storage container drops rapidly, and the lower level gauge can promptly trigger a pump stop to prevent dry running. When water consumption decreases sharply, the upper level gauge starts with a delay, ensuring that the storage container has sufficient buffer space. No manual parameter adjustment is required, enhancing the system's adaptability to complex operating conditions. The clear upper and lower level thresholds provide operators with clear maintenance references. If the water storage container frequently triggers the upper liquid level, it indicates excessive water consumption, which may be due to wear on the spray nozzles, requiring timely repair. If the upper liquid level is not triggered for a long period, it may be due to water tank leakage or blockage in the recycling pipe, which will help to quickly locate the fault.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0058] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be illustrated in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0059] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures may use the embodiments discussed.

[0060] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the claims of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A water spray circulation system for ultrasonic testing, characterized in that, include: Water tank (1); A water pump (2) whose inlet is connected to the water tank (1); The gas separation device (4) includes a separation box (41) and a defoaming plate (42). The separation box (41) is connected to the outlet of the water pump (2). The inlet of the separation box (41) is opposite to the defoaming plate (42) so that the water flow impacts the defoaming plate (42) and flows downward along the plate surface to form laminar flow. A water sprayer (7) is connected to the separation box (41), and an ultrasonic probe (01) is installed inside it.

2. The ultrasonic testing water spray circulation system according to claim 1, characterized in that, It also includes an air blowing assembly (5), which includes an air compressor (51) and a jet nozzle (52). The air outlet of the air compressor (51) is connected to the jet nozzle (52). The jet nozzle (52) is located above the water sprayer (7), and its jet end is opposite to the position of the test piece to blow away the water droplets splashed on the test piece by the water jet.

3. The ultrasonic testing water spray circulation system according to claim 2, characterized in that, The water sprayer (7) has a connected mounting cavity (71) and a water inlet cavity (72). The water inlet cavity (72) is connected to the separation box (41). An ultrasonic probe (01) is installed at the bottom of the mounting cavity (71). The detection end of the ultrasonic probe (01) is opposite to the position of the test piece so that the water flows out of the mounting cavity (71) and sprays towards the test piece to form a detection coupling water column.

4. The ultrasonic testing water spray circulation system according to claim 1, characterized in that, The defoaming plate (42) is spirally arranged in the height direction of the separation box (41).

5. The ultrasonic testing water spray circulation system according to claim 1, characterized in that, A filter (3) is provided between the water pump (2) and the separation tank (41) to filter impurities in the water flow.

6. The ultrasonic testing water spray circulation system according to claim 1, characterized in that, A flow regulator (6) is provided between the separation box (41) and the water sprayer (7) to adjust the state of the water jet sprayed by the water sprayer (7).

7. The ultrasonic testing water spray circulation system according to claim 1, characterized in that, It also includes a water storage component (8), which includes a water tank (81) located below the water sprayer (7) and connected to the water tank (1).

8. The ultrasonic testing water spray circulation system according to claim 7, characterized in that, The water storage assembly (8) also includes a water storage container (82), a level gauge (84), and a circulation pump (83). The water storage container (82) is connected to the outlet of the water tank (81). The inlet of the circulation pump (83) is connected to the water storage container (82), and its outlet is connected to the water tank (1). The level gauge (84) is installed inside the water storage container (82) to control the start or stop of the circulation pump (83) according to the water level detected by the level gauge (84) in the water storage container (82).

9. A water spray circulation system for ultrasonic testing according to claim 8, characterized in that, The level gauge (84) includes an upper level gauge and a lower level gauge; The circulating pump (83) has a start-up condition and a stop condition. When the circulating pump (83) is in the start-up condition, the water level in the water storage container (82) is above the measuring end of the upper level gauge; when the circulating pump (83) is in the stop condition, the water level in the water storage container (82) is below the measuring end of the lower level gauge.

10. A water spray circulation system for ultrasonic testing according to claim 1, characterized in that, The surface of the defoaming plate (42) is provided with spikes to puncture the air bubbles in the laminar flow.

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