A control device and method for a sink

Abstract

The application discloses a kind of control device and method of sink, sink is provided with drain valve and water injection valve;The control device of sink includes: water turbidity detection module, ultrasonic liquid level detection module and control module;Wherein, water turbidity detection module is used to detect the turbidity value of water in sink, ultrasonic liquid level detection module is used to detect the water level value of water in sink, control module, for receiving turbidity value and water level value, according to at least one of turbidity value and water level value, the on-off of at least one of drain valve and / or water injection valve is controlled, to realize the control of turbidity and / or water level of water in sink, realize the control of water required when carbon fiber composite material water-jet penetration ultrasonic detection equipment is carried out water-jet penetration ultrasonic detection.This scheme can automatically perform the operation of water change and water replenishment, improve the accuracy of water quality and water quantity control of circulating water in the sink used for carbon fiber composite material water-jet penetration ultrasonic detection equipment, and save time and effort.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic testing of carbon fiber composite materials, specifically relating to a control device and method for a water tank, and more particularly to a control device and method for automatic water replacement and replenishment of the water tank used in ultrasonic testing equipment for water penetration of carbon fiber composite materials. Background Technology

[0002] Fiber-reinforced resin matrix composites, especially carbon fiber composites, have been widely used in aerospace, aviation, wind power, and pressure vessel industries due to their excellent properties such as high strength, fatigue resistance, corrosion resistance, and ease of processing. However, the unique manufacturing process of composite materials means that internal defects such as porosity, delamination, debonding, inclusions, and poor curing can significantly reduce their performance and shorten their service life. Water jet penetration ultrasonic testing is the most common method for detecting defects in composite materials. Because ultrasonic waves attenuate considerably in composite materials, short-path penetration ultrasonic testing is widely used.

[0003] When performing penetration ultrasonic testing (i.e., water-jet penetration ultrasonic testing) on ​​carbon fiber composite materials, two ultrasonic probes are placed on either side of the workpiece, with one transmitting and one receiving for ultrasonic testing. To achieve automated scanning and testing of composite materials and large components, water-jet penetration ultrasonic testing, using a water jet as the coupling method, has been widely developed and applied. This involves installing water nozzles at each of the two probes, with a circulating water pump pumping water from a tank to the nozzles. The sprayed water jet serves as the propagation medium for the ultrasonic waves reaching and penetrating the inspected workpiece. To ensure the quality of ultrasonic wave propagation and coupling during testing, pure, impurity-free, and bubble-free deionized water must be stored in the tank and recycled as the acoustic coupling agent. Due to factors such as deterioration, contamination with impurities, and the generation of large bubbles, testing personnel need to frequently and manually replace the circulating water in the tank. At the same time, due to factors such as evaporation of the circulating water, splashing during testing, and residue inside the components, the water quality in the tank continuously deteriorates. Testing personnel need to accurately confirm the water quality and determine whether the water needs to be replaced or replenished. This brings many inconveniences to the testing process and testing personnel. Untimely replacement of circulating water can even affect the quality of ultrasonic testing.

[0004] In the relevant solutions, the personnel testing the water quality of the circulating water in the water tank of the carbon fiber composite water-jet penetration ultrasonic testing equipment mainly rely on simple methods such as observing color, smelling odor, or experience to judge the water quality, without quantitative judgment standards. This may lead to deviations, which may affect the coupling effect of ultrasonic waves and cause misjudgment. Moreover, the detection efficiency is low. Therefore, there is an urgent need for a device and method to quantitatively judge the water quality in the water tank and realize the automatic water replacement and replenishment control of the water tank used in the carbon fiber composite water-jet penetration ultrasonic testing equipment.

[0005] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a control device and method for a water tank, which solves the problem that the testing personnel of the ultrasonic water penetration testing equipment for carbon fiber composite materials need to manually judge the water quality and quantity of the circulating water in the water tank of the ultrasonic water penetration testing equipment for carbon fiber composite materials. This involves frequently judging whether water needs to be changed or replenished and manually performing the corresponding operations, which at least results in inaccurate judgments and a large amount of manual labor. The invention achieves the goal of automatically detecting the turbidity and water level of the circulating water in the water tank of the ultrasonic water penetration testing equipment for carbon fiber composite materials and automatically performing water change and replenishment operations, thereby improving the accuracy of water quality and quantity control in the water tank of the ultrasonic water penetration testing equipment for carbon fiber composite materials, and saving time and effort.

[0007] This invention provides a control device for a water tank, wherein the water tank is used in a water-jet penetration ultrasonic testing device for carbon fiber composite materials, serving as the water tank for the device; the water tank is used to store and provide the water required for the device to perform water-jet penetration ultrasonic testing; the water tank has a drain outlet for opening a drainage pipe and a water inlet for opening a water inlet; a drain valve for controlling the on / off state of the drainage pipe is provided at the drain outlet, and a water inlet valve for controlling the on / off state of the water inlet is provided at the water inlet; the control device for the water tank includes: a water turbidity detection module, an ultrasonic liquid level detection module, and a control module; wherein, the... The water turbidity detection module is used to detect the turbidity value of the water in the water tank and send the turbidity value of the water in the water tank to the control module; the ultrasonic level detection module is used to detect the water level value of the water in the water tank and send the water level value of the water in the water tank to the control module; the control module is used to receive the turbidity value and the water level value of the water in the water tank, and control the opening and closing of at least one of the drain valve and the water injection valve according to at least one of the turbidity value and the water level value of the water in the water tank, so as to realize the control of the turbidity and / or water level of the water in the water tank, and realize the control of the water required for water penetration ultrasonic testing of carbon fiber composite material.

[0008] In some embodiments, the control module controls the on / off state of at least one of the drain valve and the water inlet valve based on at least one of the turbidity value and the water level value of the water in the tank, to achieve control over the turbidity and / or water level of the water in the tank. This includes: the control module determining whether the turbidity value of the water in the tank is greater than the upper limit of a preset turbidity range; if it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range, then controlling the drain valve to open the drain pipe, so that the... Water in the tank can be discharged through the drain pipe until the water level in the tank reaches the set minimum water level. At this point, the drain valve is controlled to close the drain pipe, stopping the drainage from the tank. With the drain valve closed, the water inlet valve is controlled to open the water inlet pipe to a preset opening degree, allowing external water to be injected into the tank through the inlet pipe. This continues until the water level in the tank is detected to reach the set maximum water level. At this point, the water inlet valve is controlled to close the water inlet pipe. The control module is configured to stop the water inlet pipe from filling the water tank, thus completing the water filling process; and / or, the control module is further configured to determine whether the water level in the water tank is lower than a set critical water level; if the water level in the water tank is determined to be lower than the set critical water level, the control module controls the drain valve to close the drain pipe, and simultaneously controls the water inlet valve to open the water inlet pipe to a preset opening degree, allowing external water to be injected into the water tank through the water inlet pipe; until the water level in the water tank is detected to reach the set maximum water level. When the value is reached, the water injection valve is controlled to shut off the water inlet pipe, thereby stopping the water inlet pipe from supplying water; wherein, the set maximum water level value is the highest water level value of the water tank, the set critical water level value is the lowest water level value of the water tank, the set critical water level value is the water level value sufficient to maintain the water jet penetration ultrasonic testing equipment for carbon fiber composite materials to perform water jet penetration ultrasonic testing, the set critical water level value is less than the set maximum water level value, and the set minimum water level value is less than the set critical water level value.

[0009] In some embodiments, the water tank further includes a water outlet; the water outlet is connected to a circulating water pump in the carbon fiber composite material water jet penetration ultrasonic testing equipment; the water turbidity detection module is disposed on the inner side wall of the water outlet's outlet pipe; the water outlet's outlet pipe has a first height position and a second height position along the height direction of the water tank, the first height position being a position farther from the bottom of the water tank, and the second height position being a position closer to the bottom of the water tank; the water turbidity detection module includes a first turbidity sensor and a second turbidity sensor, the first turbidity sensor being disposed at the first height position of the water outlet's outlet pipe; and the second turbidity sensor being disposed at the second height position of the water outlet's outlet pipe. Wherein, along the height direction of the water tank, the first height position is higher than the second height position; the water turbidity detection module detects the turbidity value of the water in the water tank and sends the turbidity value of the water in the water tank to the control module, including: a first turbidity sensor, used to detect the turbidity value of the water located at the first height position, recorded as the first turbidity value, and send the first turbidity value to the control module; a second turbidity sensor, used to detect the turbidity value of the water located at the second height position, recorded as the second turbidity value, and send the second turbidity value to the control module; wherein, either the turbidity value of the water at the first height position or the turbidity value of the water at the second height position is taken as the turbidity value of the water in the water tank.

[0010] In some embodiments, the control device for the water tank further includes a flow meter disposed at the water inlet, the flow meter being electrically connected to the control module; wherein, the flow meter is used to detect the water flow rate at the water inlet and send the water flow rate at the water inlet to the control module; the control module is further used to receive the water flow rate at the water inlet and determine whether the water flow rate at the water inlet is within a preset water flow rate range to control the opening degree of the water inlet valve; if it is determined that the water flow rate at the water inlet is not within the preset water flow rate range, then it is determined whether the water flow rate at the water inlet is greater than the maximum value within the preset water flow rate range; if it is determined that the water flow rate at the water inlet is greater than the maximum value within the preset water flow rate range, then the opening degree of the water inlet valve is controlled to decrease; if the water flow rate at the water inlet is not greater than the maximum value within the preset water flow rate range, then the opening degree of the water inlet valve is adjusted to increase; until the water flow rate at the water inlet is detected to be within the preset water flow rate range, the adjustment of the opening degree of the water inlet valve is stopped, so as to achieve control of the water flow rate at the water inlet, so that the water flow rate at the water inlet is within the preset water flow rate range.

[0011] In some embodiments, the control device for the water tank further includes a warning component; the control module is also configured to control the warning component to issue a warning signal when the water in the water tank is changed or replenished by controlling the turbidity and / or water level of the water in the water tank, so as to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the carbon fiber composite water-penetrating ultrasonic testing equipment until the operation of changing or replenishing the water in the water tank by controlling the turbidity and / or water level of the water in the water tank is completed.

[0012] In conjunction with the aforementioned water tank control device, another aspect of the present invention provides a water tank control method, wherein the water tank is applied in a carbon fiber composite water jet penetration ultrasonic testing device, serving as the water tank used by the carbon fiber composite water jet penetration ultrasonic testing device; the water tank is used to store and provide the water required for the carbon fiber composite water jet penetration ultrasonic testing device to perform water jet penetration ultrasonic testing; the water tank has a drain outlet for opening a drain pipe and a water inlet for opening a water inlet; a drain valve for controlling the on / off state of the drain pipe is provided at the drain outlet of the water tank, and a [missing information - likely a device name or designation] is provided at the water inlet of the water tank. A water inlet valve is provided for controlling the on / off state of the water inlet pipe; the control method of the water tank includes: detecting the turbidity value of the water in the water tank; detecting the water level value of the water in the water tank; receiving the turbidity value and the water level value of the water in the water tank; and controlling the on / off state of at least one of the drain valve and the water inlet valve based on at least one of the turbidity value and the water level value of the water in the water tank, so as to realize the control of the turbidity and / or water level of the water in the water tank, and realize the control of the water required for water penetration ultrasonic testing of the carbon fiber composite material.

[0013] In some embodiments, the on / off state of at least one of the drain valve and the water inlet valve is controlled based on at least one of the turbidity value and the water level value of the water in the tank, to achieve control of the turbidity and / or water level of the water in the tank, including: determining whether the turbidity value of the water in the tank is greater than the upper limit of a preset turbidity range; if it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range, then controlling the drain valve to open the drain pipe, so that the water in the tank can pass through... The drain pipe discharges water from the tank until the water level in the tank reaches a set minimum level. Then, the drain valve is closed to shut off the drain pipe and stop the tank from draining. With the drain valve closed, the water inlet valve is opened to a preset opening degree, allowing external water to flow into the tank. Water inlet water continues to flow into the tank until the water level in the tank reaches a set maximum level. Then, the water inlet valve is closed to shut off the water inlet and stop the tank from draining. The water inlet pipe stops supplying water, completing the filling of the water tank; and / or, it is determined whether the water level in the water tank is lower than a set critical water level value; if it is determined that the water level in the water tank is lower than the set critical water level value, the drain valve is controlled to close to shut off the drain pipe, and at the same time, the water inlet valve is controlled to open the water inlet pipe to a preset opening degree, allowing external water to be injected into the water tank through the water inlet pipe; until the water level in the water tank is detected to reach the set maximum water level value, the control... The water inlet valve is shut off to shut off the water inlet pipe, thereby stopping water intake. The set maximum water level is the highest water level value of the water tank, the set critical water level is the lowest water level value of the water tank, and the set critical water level is the water level sufficient to maintain the water-jet-through ultrasonic testing equipment for the carbon fiber composite material. The set critical water level is less than the set maximum water level value, and the set minimum water level is less than the set critical water level value.

[0014] In some embodiments, the method further includes: detecting the water flow rate of the water inlet; receiving the water flow rate of the water inlet and determining whether the water flow rate of the water inlet is within a preset water flow rate range to control the opening degree of the water inlet valve; if it is determined that the water flow rate of the water inlet is not within the preset water flow rate range, then determining whether the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range; if it is determined that the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range, then controlling the opening degree of the water inlet valve to decrease; if the water flow rate of the water inlet is not greater than the maximum value within the preset water flow rate range, then adjusting the opening degree of the water inlet valve to increase; until it is detected that the water flow rate of the water inlet is within the preset water flow rate range, stopping the adjustment of the opening degree of the water inlet valve, so as to achieve control of the water flow rate of the water inlet and keep the water flow rate of the water inlet within the preset water flow rate range.

[0015] In some embodiments, the method further includes: when the water in the tank is replaced or replenished by controlling the turbidity and / or water level of the water in the tank, controlling a preset warning component to issue a warning signal to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the equipment until the operation of replacing or replenishing the water in the tank by controlling the turbidity and / or water level of the water in the tank is completed.

[0016] Therefore, the solution of this invention, by setting a water turbidity detection module, an ultrasonic level detection module, and a control module in the water tank of the carbon fiber composite water-penetrating ultrasonic testing equipment, controls the replacement or replenishment of water in the tank based on the turbidity value detected by the water turbidity detection module and the water level value detected by the ultrasonic level detection module. This achieves automatic water replacement and replenishment in the water tank of the carbon fiber composite water-penetrating ultrasonic testing equipment, solving the problem that the testing personnel of the carbon fiber composite water-penetrating ultrasonic testing equipment need to manually judge the water quality and quantity of the circulating water in the water tank, frequently determine whether water needs to be replaced or replenished, and manually perform the corresponding operations. This results in inaccurate judgment results and a large amount of manual labor. The solution achieves the effect of automatically detecting the turbidity and water level of the circulating water in the water tank of the carbon fiber composite water-penetrating ultrasonic testing equipment and automatically performing water replacement and replenishment operations, thereby improving the accuracy of water quality and quantity control in the water tank of the carbon fiber composite water-penetrating ultrasonic testing equipment, and saving time and labor. At the same time, it is beneficial to improve the propagation quality of ultrasonic waves using the circulating water in the water tank as the propagation medium when the water jet penetration ultrasonic testing equipment for carbon fiber composite materials uses the circulating water in the water tank to perform defect detection on carbon fiber composite workpieces (such as ultrasonic wave propagation coupling quality or ultrasonic wave propagation coupling effect), thereby improving the detection accuracy of defect detection on carbon fiber composite workpieces.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a structure of an embodiment of the control device for the water tank of the present invention;

[0020] Figure 2 This is a schematic diagram of a specific embodiment of the control device for the water tank of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a water turbidity detection module in the control device of the water tank of the present invention;

[0022] Figure 4 This is a schematic diagram showing the position of an embodiment of the ultrasonic liquid level detection module in the control device of the water tank of the present invention;

[0023] Figure 5 This is a flowchart illustrating an embodiment of the water tank control method of the present invention;

[0024] Figure 6 This is a schematic flowchart of an embodiment of the method of the present invention, which controls the on / off state of the drain valve and the water injection valve based on the turbidity value of the water in the water tank.

[0025] Figure 7 This is a schematic flowchart of an embodiment of the method of the present invention, which controls the on / off state of the water injection valve based on the water level in the water tank.

[0026] Figure 8 This is a schematic flowchart of an embodiment of the method of the present invention, which adjusts the opening degree of the water injection valve according to the water flow rate at the water injection port.

[0027] Figure 9 This is a flowchart illustrating a specific embodiment of the water tank control method of the present invention.

[0028] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0029] 11-First light transmitter; 12-First light receiver; 21-Second light transmitter; 22-Second light receiver; 20-Ultrasonic detection module; 101-Computer; 102-Central processing unit; 103-Ultrasonic liquid level monitoring module; 104-Flashing light group; 105-Water turbidity detection module; 106-Water tank; 107-Flow meter; 108-1, 108-2-Solenoid valves. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0031] According to embodiments of the present invention, such as Figure 1 As shown, a control device for a water tank is provided. The water tank is used in a water-jet penetration ultrasonic testing device for carbon fiber composite materials, serving as the water tank for the device. The water tank stores and provides the water required for the device to perform water-jet penetration ultrasonic testing. The water tank has a drain outlet for opening a drainage pipe and a water inlet for opening a water inlet. A drain valve for controlling the on / off state of the drainage pipe is provided at the drain outlet, and a water inlet valve for controlling the on / off state of the water inlet is provided at the water inlet. The control device for the water tank includes a water turbidity detection module, an ultrasonic liquid level detection module, and a control module.

[0032] The water turbidity detection module is used to detect the turbidity value of the water in the water tank and send the turbidity value of the water in the water tank to the control module.

[0033] The ultrasonic liquid level detection module is used to detect the water level in the water tank and send the water level value in the water tank to the control module.

[0034] The control module is used to receive the turbidity value and the water level value of the water in the tank, and control the opening and closing of at least one of the drain valve and the water injection valve according to at least one of the turbidity value and the water level value of the water in the tank, so as to realize the control of the turbidity and / or water level of the water in the tank, and realize the control of the water required for the water jet penetration ultrasonic testing equipment for carbon fiber composite materials.

[0035] In practical use, the carbon fiber composite material water-jet ultrasonic penetration testing equipment sprays deionized water from the water tank from the outlet to both sides of the carbon fiber composite workpiece via a circulating water pump, forming a water jet. Each of the two spray heads contains an ultrasonic probe. The sprayed water jet serves as the propagation medium for ultrasonic waves to reach and penetrate the inspected workpiece, enabling ultrasonic testing. The sprayed water falls back into the water tank for recycling. Depending on the shape of the carbon fiber composite workpiece, the equipment may spray deionized water from the outlet to the upper and lower sides or the inner and outer sides of the workpiece via a circulating water pump. See also... Figure 1 In the example shown, the opening degree of the drain valve and the water injection valve is controlled by the control module; the water turbidity detection module, the ultrasonic liquid level detection module, the drain valve, and the water injection valve are all electrically connected to the control module; the control module is used to receive the turbidity value and the water level value of the water in the water tank, and control the opening and closing of at least one of the drain valve and the water injection valve according to at least one of the turbidity value and the water level value of the water in the water tank. Specifically, it sends a control signal to the control module to control the opening or closing of the water injection valve and the drain valve according to a preset parameter and a comparison result of at least one of the turbidity value and the water level value of the water in the water tank. Figure 4 This is a schematic diagram showing the location of an embodiment of the ultrasonic liquid level detection module in the control device of the water tank of the present invention. The installation position of the ultrasonic liquid level detection module (such as ultrasonic liquid level detection module 20) is as follows. Figure 4As shown, the ultrasonic level detection module is perpendicular to the water surface of the tank and installed above the highest water level. It utilizes the difference in propagation speed of ultrasonic waves in air and water to detect the water level in the tank. The ultrasonic level detection module is waterproof, and the installation location should be chosen to avoid detection blind spots based on its design characteristics. Here, the ultrasonic level monitoring probe and transducer design inherently have certain blind spots due to their working principle; the larger the measurement range, the larger the blind spot. Therefore, the installation location should take the blind spot into account, meaning the highest point of the measured liquid level should be outside the blind spot. The water inlet valve and drain valve can be solenoid valves, and the control module can be a central processing unit (such as a microcontroller). In this embodiment, the water inlet and drain pipes are defaulted to the normally open state. This allows the entire device to directly complete the action when it determines that water replacement or replenishment is needed, without requiring manual intervention. The water inlet and drain pipes referred to here are essentially the switch for the inlet water source and the drain pipe connected to the drain outlet. The connection between the solenoid valve and the central processing unit (CPU) is achieved using a relay switch or a switch with relay functionality. This allows the CPU to issue switching commands to the solenoid valve. The purpose of using a relay switch, as verified, is to more accurately and stably control the opening and closing of the solenoid valve to regulate the flow rate. Here, the solenoid valve acts as an actuator to control the water flow rate; the signal control of the water flow rate is achieved through the coordination of the solenoid valve and the relay.

[0036] In addition, some solutions use pressure level sensors for liquid level monitoring or control, aiming to monitor and control the water levels of two tanks, which are located at different elevations and have significant and frequent differences in water level changes. In contrast, the solution of this invention aims to monitor the liquid level in a single tank, where changes in the liquid level are concentrated between the highest liquid level in the tank and above the circulation outlet. The liquid level monitoring method used in this invention is more accurate and timely. In the solution of this invention, the water tank is usually not high above the ground or is even embedded below the ground, making pressure sensor liquid level monitoring inconvenient.

[0037] In other solutions, level control, turbidity control, and conductivity monitoring are set independently and each operation is completed through a corresponding control device. However, in the solution of this invention, the water replenishment or replacement action is mainly achieved by feeding back the water level and turbidity data to the central processor, which then directly controls the process via solenoid valves and flow meters. Furthermore, the solution considers the potential for large water flow rates to generate and increase air bubbles in the tank, controlling and limiting the water flow rate by adjusting the opening and closing of the solenoid valves to prevent bubble formation. Other solutions, if applied to this invention, would not be able to control the water flow rate during replenishment or replacement.

[0038] In the technical solution of this invention, by adding a control device for the water tank, that is, through the cooperation between the water turbidity detection module, the ultrasonic liquid level detection module and the control module, the water in the water tank can be automatically replaced and replenished, the judgment of water turbidity is more accurate, and the labor of the testing personnel is saved, making the ultrasonic testing process easier and the detection accuracy higher.

[0039] In some embodiments, the control module controls the on / off state of at least one of the drain valve and the water injection valve based on at least one of the turbidity value and the water level value of the water in the tank, so as to achieve control over the turbidity and / or water level of the water in the tank, including: a first process of controlling the on / off state of the drain valve and the water injection valve based on the turbidity value of the water in the tank, and / or a second process of controlling the on / off state of the water injection valve based on the water level value of the water in the tank.

[0040] Specifically, the control module controls the opening and closing of the drain valve and the water injection valve based on the turbidity value of the water in the tank. Specifically, this involves: determining whether the water level in the tank is lower than a set critical water level; if the water level is lower than the set critical water level, controlling the drain valve to close the drain pipe, and simultaneously controlling the water injection valve to open the inlet pipe at a preset opening degree, allowing external water to be injected into the tank through the inlet pipe; until the water level in the tank reaches the set maximum water level, controlling the water injection valve to close the inlet pipe, stopping water intake, thus replenishing the tank when the water level is lower than the set critical water level, ensuring sufficient water is supplied to the carbon fiber composite material water-penetrating ultrasonic testing equipment. Of course, if it is determined that the water level in the tank is higher than or equal to the set critical water level, the opening of the water injection valve will not be controlled temporarily, and the opening or closing state of the drain valve will remain in the current state.

[0041] The control module controls the opening and closing of the water injection valve based on the water level in the tank. Specifically, it determines whether the water level in the tank is lower than a set critical water level. If the water level is lower, the drain valve is closed to shut off the drain pipe, and the water injection valve is opened to a preset degree to allow external water to flow into the tank. This continues until the water level reaches the set maximum level, at which point the water injection valve is closed to shut off the water injection pipe, stopping water flow. This replenishes the tank when the water level is lower than the set critical water level, ensuring sufficient water for the ultrasonic penetration testing equipment of the carbon fiber composite material. Conversely, if the water level is higher than or equal to the set critical water level, the water injection valve is not opened, and the drain valve remains open or closed.

[0042] Wherein, the set maximum water level value is the highest water level value of the water tank, the set critical water level value is the water level value sufficient to maintain the water jet penetration ultrasonic testing equipment for the carbon fiber composite material, the set critical water level value is less than the set maximum water level value, and the set minimum water level value is less than the set critical water level value.

[0043] Here, the upper limit of the preset turbidity range can be pre-set based on the minimum water turbidity value required for water penetration ultrasonic testing of carbon fiber composite materials. Controlling the water injection valve to a preset opening degree and opening the inlet pipe is to control the water flow rate at the injection port, preventing excessive flow that could generate air bubbles and affect the accuracy of the water penetration ultrasonic testing of carbon fiber composite materials. The set minimum water level value is sufficient to submerge the upper edge of the outlet to prevent air from entering the circulating water pump, generating air bubbles, and affecting the accuracy of the water penetration ultrasonic testing of carbon fiber composite materials.

[0044] "Not exceeding the upper edge of the outlet" means "above". For example, the outlet is usually circular and set on the side wall of the water tank. The lowest water level is the position of the upper edge of the circular outlet. Since the circulating water pump is set outside the water tank, when the water level is lower than this height, the pump is more likely to generate more air bubbles in the circulating water.

[0045] In some embodiments, the water tank further has a water outlet; the water outlet is connected to a circulating water pump in the ultrasonic water penetration testing equipment for the carbon fiber composite material; the water turbidity detection module is disposed on the inner side wall of the water outlet's outlet pipe; the water outlet's outlet pipe has a first height position and a second height position along the height direction of the water tank, the first height position being a position farther from the bottom of the water tank, and the second height position being a position closer to the bottom of the water tank; the water turbidity detection module includes a first turbidity sensor and a second turbidity sensor, the first turbidity sensor being disposed at the first height position of the water outlet's outlet pipe; the second turbidity sensor being disposed at the second height position of the water outlet's outlet pipe; wherein, along the height direction of the water tank, the first height position is higher than the second height position.

[0046] The water turbidity detection module detects the turbidity value of the water in the water tank and sends the turbidity value of the water in the water tank to the control module. It includes: a first turbidity sensor for detecting the turbidity value of the water at the first height position, recording it as the first turbidity value, and sending the first turbidity value to the control module; and a second turbidity sensor for detecting the turbidity value of the water at the second height position, recording it as the second turbidity value, and sending the second turbidity value to the control module. Either the turbidity value at the first height position or the turbidity value at the second height position is used as the turbidity value of the water in the water tank.

[0047] Specifically, replacing the water in the tank includes: keeping the water inlet valve closed and controlling the drain valve to open; detecting the water level in the tank in real time; when the water level in the tank reaches a set minimum water level, controlling the drain valve to close and simultaneously controlling the water inlet valve to open at a preset opening; until the water level in the tank reaches a set maximum water level, controlling the water inlet valve to close, wherein the set minimum water level is less than the set maximum water level.

[0048] Specifically, replenishing the water in the tank includes: keeping the drain valve closed and controlling the water inlet valve to open at a preset opening degree; detecting the water level in the tank in real time; and controlling the water inlet valve to close when the water level in the tank reaches the set maximum water level.

[0049] Preferably, the control module controls the opening and closing of the drain valve and the water inlet valve based on the upper limit of a preset turbidity range and according to at least one of the first turbidity value and the second turbidity value, thereby controlling the turbidity of the water in the tank. This allows for water exchange or replenishment in the tank by controlling the turbidity and / or water level. The outlet is connected to a circulating water pump for pumping water from the tank and spraying it onto the workpiece. Figure 3 This is a schematic diagram of the structure of a water turbidity detection module in the control device of the water tank of the present invention. The water turbidity detection module is as follows... Figure 3 As shown, the system includes a first turbidity sensor positioned at a first height and a second turbidity sensor positioned at a second height. Each turbidity sensor includes a matched light emitter and a light receiver. Further, a first light emitter 11 is positioned at two-thirds the height of the water tank outlet, and a second light emitter 21 is positioned at one-third the height of the water tank outlet. The height of the first light emitter 11 is higher than the height of the second light emitter 21. The system also includes a first light receiver 12, corresponding to the first light emitter 11 and installed at the same height on the opposite side, and a second light receiver 22, corresponding to the second light emitter 21 and installed at the same height on the opposite side. The first light emitter 11 and the second light emitter 21 are respectively connected to the control module. The first light emitter 11 and the second light emitter 21 are used to intermittently and alternately emit light signals. The first light receiver 12 and the second light receiver 22 are used to receive and identify the light signals and convert the received light signals into electrical signals. The magnitude of the current represents the light intensity, and the current signal is transmitted to the control module. The more light passes through the water, the greater the current, and the control module determines that the water turbidity is lower.

[0050] For example, the central processing unit (CPU) is connected to a computer. The computer can set the maximum water level in the tank, the inlet flow rate of the tank, and the lower limit of the percentage of emitted light intensity received by the light receiver. These settings are then fed back to the CPU. Both the light transmitter and receiver are connected to the CPU. The first light transmitter 11 and the second light transmitter 12 periodically emit light, and the first light receiver 12 and the second light receiver 22 receive the light and transmit the signal to the CPU. The CPU checks the received light intensity and determines whether it is below the set lower limit, i.e., whether there are air bubbles or suspended matter in the circulating water. The first light transmitter 11 and the first light receiver 12 are horizontally opposite each other at the circulating water outlet, with a height of 2 / 3 of the outlet height. The second light transmitter 12 and the second light receiver 22 are also horizontally opposite each other at the circulating water outlet, with a height of 1 / 3 of the outlet height. The water turbidity detection module is installed at the outlet of the circulating water tank. It judges the suspended matter in the water quality by receiving the decrease in light intensity. The first transmitter and the second transmitter emit light alternately. The receiver feeds back the received light intensity signal to the central processing unit. The central processing unit judges whether the circulating water needs to be replaced by the degree of decrease in the received light intensity. If replacement is required, it will first send a signal to the flashing light group and the drain outlet solenoid valve.

[0051] In this embodiment, two sets of turbidity sensors are set up for comparison. Only one set is set up, which can detect different positions during the detection process to ensure the overall coverage effect of the detection. The turbidity sensor is set at the water outlet because the circulating water flows more significantly at the water outlet. When there are impurities or suspended matter in the water, they are more likely to be released into the water, so the detection effect is better. Of course, more turbidity sensors can be set up, or they can be set up in multiple positions in the water tank.

[0052] Each preset value can be customized. In this embodiment, the upper limit of the preset turbidity range can be set to ensure that the intensity of light received by the light receiver is not less than 70% of the emitted intensity. The set critical water level value can be set to 90% of the highest water level value, i.e., when the water level difference is 10%. The set minimum water level value can be set to 5% of the highest water level value, i.e., when the water level difference is 95%, drainage will stop. The specific values ​​are set according to the height of the water outlet. If both the turbidity value and the water level value in the water tank are within the preset range, the control device of the water tank will not perform any operation. In this case, and during water replenishment, the testing personnel can perform ultrasonic testing normally. However, the testing personnel cannot perform ultrasonic testing when changing the water.

[0053] Figure 2 This is a schematic diagram of a specific embodiment of the control device for the water tank of the present invention. In some embodiments, such as... Figure 2As shown, the control device for the water tank (e.g., water tank 106) further includes a flow meter (e.g., flow meter 107) installed at the water inlet. The flow meter is electrically connected to the control module. The flow meter detects the water flow rate at the water inlet and sends this flow rate to the control module. The control module receives the water flow rate at the water inlet and determines whether the water flow rate is within a preset flow rate range to control the opening of the water inlet valve. If the water flow rate is not within the preset flow rate range, the module determines whether the water flow rate is greater than the maximum value within the preset flow rate range. If the water flow rate is greater than the maximum value within the preset flow rate range, the module controls the opening of the water inlet valve to decrease. If the water flow rate is not greater than the maximum value within the preset flow rate range, the module adjusts the opening of the water inlet valve to increase. This process continues until the water flow rate is detected to be within the preset flow rate range, at which point the adjustment of the water inlet valve is stopped, thereby controlling the water flow rate at the water inlet to ensure it remains within the preset flow rate range.

[0054] Specifically, the preset opening degree is the opening degree that ensures the water flow rate is within a preset range. However, in practical applications, this invention uses self-made deionized water, and the water production is manually controlled by the operator. This may result in differences in the water flow rate or water pressure in the inlet pipe, potentially causing the water flow rate to be outside the preset range even when the preset opening degree is reached. Therefore, the use of a flow meter can correct the opening degree of the water inlet valve, ensuring that the water flow rate at the inlet is always within the preset range to prevent the generation of air bubbles, which could affect the accuracy of ultrasonic testing.

[0055] For example, the central processing unit receives the pulse signal from the flow meter and determines whether the flow rate is within the set limit. If the flow rate exceeds the limit, the central processing unit will send a signal to the water inlet solenoid valve and reduce the opening and closing of the solenoid valve, thereby reducing the flow rate and preventing a large number of air bubbles from being generated in the circulating water due to excessive flow during the water injection process.

[0056] In some embodiments, the control device for the water tank further includes a warning component. The control module is also configured to control the warning component to issue a warning signal when the water in the tank is being replaced or replenished by controlling the turbidity and / or water level, to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the equipment until the water replacement or replenishment operation is completed.

[0057] Specifically, the warning component can be a flashing light group, a buzzer, etc. In this embodiment, a flashing light group is used. When the water in the water tank is changed or replenished by controlling the turbidity and / or water level in the water tank, the control module controls the flashing light group to flash continuously, prompting the user of the carbon fiber composite material water-penetrating ultrasonic testing equipment, i.e., the testing personnel, to stop using the water-penetrating ultrasonic testing equipment for ultrasonic testing, because during this process, the turbidity value of the water in the water tank does not meet the turbidity requirements of the propagation medium required for ultrasonic testing, and the water volume is insufficient; until the water change is completed, the flashing light group goes out. At this time, the testing personnel can use the carbon fiber composite material water-penetrating ultrasonic testing equipment again for ultrasonic testing.

[0058] For example: during initialization, via computer (such as...) Figure 2 The computer 101 shown is equipped with a water tank (such as...). Figure 2 The water tank 106 shown displays the highest water level, the percentage of the lower water level limit, and the water flow rate at the water inlet, and feeds this information back to the central processing unit (such as...). Figure 2 The central processing unit 102 shown is started and running; the ultrasonic liquid level detection module (such as...) Figure 2 The ultrasonic level detection module 103 shown starts detecting the water level in the tank and feeds back the actual water level to the central processing unit; the water turbidity detection module (such as...) Figure 2 The water turbidity detection module 105 shown intermittently emits light signals and feeds back the received light signals to the central processing unit. The central processing unit compares the actual water level height fed back by the ultrasonic level detection module with the initially set maximum water level height. If the water level difference reaches 80% of the set maximum water level value, the central processing unit will simultaneously send an alarm signal to the solenoid valve at the water tank inlet (e.g., Figure 2 In the example shown, the solenoid valve 108-1 is installed on the inlet pipe; the central processing unit identifies the water turbidity signal fed back by the water turbidity detection module, and sends a signal to the flashing light group (e.g., when bubbles or suspended matter are present) when it determines that bubbles or suspended matter are present. Figure 2 The flashing light assembly 104 shown) and the solenoid valves for the water tank inlet and outlet (such as...) Figure 2In the example shown, the solenoid valve 108-2 is installed on the drain pipe. When the central processing unit sends a signal to the flashing light group and the drain outlet solenoid valve of the water tank, it indicates that there are excessive bubbles or suspended matter in the water tank. The flashing light group flashes, and the drain outlet solenoid valve will open after recognizing the signal. At this time, the circulating water in the water tank can be discharged from the drain outlet and the liquid level begins to drop. When the central processing unit receives the signal from the liquid level detection module and determines that the water level difference exceeds 95% of the set maximum water level value, the central processing unit will simultaneously send a signal to the solenoid valve. At this time, the drain outlet solenoid valve closes and the water inlet solenoid valve opens, and the water level in the water tank begins to rise. When the water level signal sent by the ultrasonic liquid level detection module to the central processing unit meets the initial set maximum water level, the water inlet solenoid valve will receive the signal from the central processing unit and close.

[0059] The central processing unit compares the actual water level height fed back by the ultrasonic liquid level detection module with the set maximum water level height. If the water level difference reaches 10% to 90% of the set maximum water level value, the central processing unit will simultaneously send an alarm signal to the water tank inlet solenoid valve. The central processing unit identifies the water turbidity signal fed back by the water turbidity detection module. If it determines that there are air bubbles or suspended matter signals, it will send a signal to the flashing light group and the water tank inlet and outlet solenoid valves.

[0060] For example, after initialization, the water turbidity detection module sends a signal to the central processing unit (CPU). The first and second light transmitters emit intermittently, and the CPU receives and identifies the signals from the first and second light receivers. When the CPU receives the signal from the water turbidity detection module and determines that the light intensity received by any light receiver is less than 70% of the emitted intensity, it sends a signal to the flashing light group and the solenoid valve at the water tank drain. The CPU also receives the signal from the ultrasonic level detection module and determines the percentage of the water level relative to the initial maximum water level value.

[0061] After initialization, the central processing unit (CPU) receives the signal from the ultrasonic level detection module and determines the percentage of the water level relative to the initial maximum water level. When the water level is below the lower limit and the CPU does not determine that water needs to be changed, the CPU will only send a signal to the water tank inlet solenoid valve, indicating that the water tank is short of water. The flow meter and the inlet solenoid valve will open after receiving the signal from the CPU. The solenoid valve controls the water flow according to the signal sent by the CPU to prevent air bubbles from being generated during the water filling process. When the water level signal sent by the ultrasonic level detection module to the CPU meets the initial maximum water level, the solenoid valve will receive the signal from the CPU and close, and the automatic water replenishment operation is completed.

[0062] Using the technical solution of this invention, a water turbidity detection module is used to detect air bubbles and suspended matter in the water tank to determine whether water needs to be replaced. An ultrasonic level detection module is used to detect the water level in the water tank, i.e., the overall water volume, to determine whether water needs to be added or stopped. A flow meter is used to control the water flow rate to avoid generating air bubbles. Through the cooperation of the above-mentioned water tank control device, under the control of the control module, automatic water replacement in the water tank is realized. By automatically detecting the turbidity and water level of the circulating water in the water tank used for the ultrasonic water penetration testing equipment for carbon fiber composite materials, and automatically performing water replacement and replenishment operations, the accuracy of water quality and quantity control of the circulating water in the water tank used for the ultrasonic water penetration testing equipment for carbon fiber composite materials is improved. It saves time and effort, solving the tedious operation of frequent water replacement and replenishment by inspectors during actual testing, thus improving efficiency. At the same time, it helps to improve the propagation quality of ultrasonic waves using the circulating water in the water tank as the propagation medium when the water jet penetration ultrasonic testing equipment for carbon fiber composite materials uses the circulating water in the water tank to perform defect detection on carbon fiber composite workpieces (such as ultrasonic wave propagation coupling quality or ultrasonic wave propagation coupling effect), thereby improving the detection accuracy of defects in carbon fiber composite workpieces. It also solves the problem of water shortage in the water tank caused by various reasons, that is, the water level in the water tank is lower than the height of the circulating water outlet, which may cause air bubbles in the circulating water to affect the propagation of ultrasonic waves during the detection, thus realizing automatic water replenishment.

[0063] According to an embodiment of the present invention, a method for controlling a water tank corresponding to a control device for the water tank is also provided. The water tank is used in a water-jet penetration ultrasonic testing device for carbon fiber composite materials, serving as the water tank for the device; the water tank is used to store and provide the water required for the device to perform water-jet penetration ultrasonic testing; the water tank has a drain outlet for opening a drainage pipe and a water inlet for opening a water inlet pipe, a drain valve for controlling the on / off state of the drainage pipe is provided at the drain outlet, and a water inlet valve for controlling the on / off state of the water inlet is provided at the water inlet. Figure 5 As shown, the control method of the water tank includes steps S110 to S130.

[0064] In step S110, the turbidity value of the water in the tank is detected.

[0065] In step S120, the water level in the water tank is detected.

[0066] In step S130, the turbidity value and the water level value of the water in the water tank are received. Based on at least one of the turbidity value and the water level value of the water in the water tank, the opening and closing of at least one of the drain valve and the water injection valve are controlled to achieve control of the turbidity and / or water level of the water in the water tank, thereby achieving control of the water required for water penetration ultrasonic testing of the carbon fiber composite material.

[0067] In practical use, the carbon fiber composite material water-jet ultrasonic penetration testing equipment sprays deionized water from the water tank through a circulating water pump to both sides of the workpiece, forming a water jet. Each of the two spray heads contains a built-in ultrasonic probe. The sprayed water jet serves as the propagation medium for ultrasonic waves to reach and penetrate the inspected workpiece, enabling ultrasonic testing. The sprayed water then falls back into the water tank for reuse. See also... Figure 1 and Figure 2 In the example shown, the opening degree of the drain valve and the water injection valve is controlled by the control module; the water turbidity detection module (see...) Figure 3 (Example shown), the ultrasonic liquid level detection module (see example) Figure 4 As shown in the example, the drain valve and the water injection valve are all electrically connected to the control module. The control module is used to receive the turbidity value and the water level value of the water in the tank, and control the opening and closing of at least one of the drain valve and the water injection valve based on at least one of the turbidity value and the water level value. Specifically, it sends a control signal to the control module to control the opening or closing of the water injection valve and the drain valve based on a preset parameter and a comparison result of at least one of the turbidity value and the water level value of the water in the tank. This realizes automatic replacement and replenishment of water in the tank, making the judgment of water turbidity more accurate, saving the labor of the testing personnel, making the ultrasonic testing process easier, and improving the detection accuracy.

[0068] Figure 9 This is a flowchart illustrating a specific embodiment of the water tank control method of the present invention. Figure 2 and Figure 9As shown, the control module can be a central processing unit (CPU). Data processing in this invention relies on the CPU. Alternatively, a computer and CPU can be used simultaneously for data processing. The purpose of including a computer is to facilitate the pre-setting of information such as turbidity range, maximum water level, minimum water level, critical water level, and water flow range during device initialization. Otherwise, other devices such as an input module would be required. In specific embodiments, a computer for ultrasonic testing can also be used to reduce costs. Initialization in this embodiment refers to the process of energizing the entire tank's control device, i.e., waiting for the next working instruction or state, while simultaneously prompting for input of water level, flow rate, and other set values.

[0069] In some embodiments, the specific process of controlling the on / off state of at least one of the drain valve and the water injection valve based on at least one of the turbidity value and the water level value of the water in the tank in step S130, so as to achieve control of the turbidity and / or water level of the water in the tank, includes: a first process of controlling the on / off state of the drain valve and the water injection valve based on the turbidity value of the water in the tank, and / or a second process of controlling the on / off state of the water injection valve based on the water level value of the water in the tank.

[0070] The following is combined with Figure 6 The schematic diagram shown is a flowchart of an embodiment of the method of the present invention, which controls the opening and closing of the drain valve and the water injection valve according to the turbidity value of the water in the water tank. The specific process of controlling the opening and closing of the drain valve and the water injection valve according to the turbidity value of the water in the water tank in step S130 is further explained, including steps S210 to S230.

[0071] Step S210: Determine whether the turbidity value of the water in the water tank is greater than the upper limit of the preset turbidity range.

[0072] Step S220: If it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range, then the drain valve is controlled to open the drain pipe so that the water in the tank can be discharged from the tank through the drain pipe until the water level in the tank reaches the set minimum water level. Then the drain valve is controlled to close the drain pipe so that the tank stops draining.

[0073] Step S230: With the drain valve closed, the water injection valve is controlled to open the water inlet pipe to a preset opening degree, allowing external water to be injected into the water tank through the water inlet pipe. This continues until the water level in the water tank reaches the set maximum water level. Then, the water injection valve is controlled to close the water inlet pipe, stopping water intake and completing the water tank filling process. This achieves water replacement or replenishment in the water tank by controlling the turbidity and / or water level when the turbidity of the water in the tank reaches the upper limit of the preset turbidity range, ensuring that the water supplied to the ultrasonic testing equipment for penetrating the carbon fiber composite material does not exceed the upper limit of the preset turbidity range. Of course, if the turbidity of the water in the tank is determined to be less than or equal to the upper limit of the preset turbidity range, the opening or closing state of the water injection valve and drain valve remains unchanged.

[0074] The following is combined with Figure 7 The schematic diagram shows an embodiment of the method of the present invention in which the water injection valve is controlled according to the water level in the water tank. The specific process of controlling the water injection valve according to the water level in the water tank in step S130 is further explained, including steps S310 to S330.

[0075] Step S310: Determine whether the water level in the tank is lower than the set critical water level.

[0076] Step S320: If it is determined that the water level in the water tank is lower than the set critical water level, the drain valve is controlled to shut off the drain pipe, and the water inlet valve is controlled to open the water inlet pipe to a preset opening degree, so that external water is injected into the water tank through the water inlet pipe.

[0077] Step S330: When the water level in the tank reaches the set maximum water level, the water injection valve is controlled to shut off the water inlet pipe, stopping water intake. This replenishes the water in the tank when the water level falls below the set critical water level, ensuring sufficient water is supplied to the ultrasonic testing equipment for water penetration of the carbon fiber composite material. Conversely, if the water level in the tank is determined to be higher than or equal to the set critical water level, the water injection valve is not opened, and the drain valve remains open or closed as it is.

[0078] Wherein, the set maximum water level value is the highest water level value of the water tank, the set critical water level value is the lowest water level value of the water tank, the set critical water level value is the water level value sufficient to maintain the water jet penetration ultrasonic testing equipment for the carbon fiber composite material, the set critical water level value is less than the set maximum water level value, and the set minimum water level value is less than the set critical water level value.

[0079] Specifically, replacing the water in the tank includes: keeping the water inlet valve closed and controlling the drain valve to open; detecting the water level in the tank in real time; when the water level in the tank reaches a set minimum water level, controlling the drain valve to close and simultaneously controlling the water inlet valve to open at a preset opening; until the water level in the tank reaches a set maximum water level, controlling the water inlet valve to close, wherein the set minimum water level is less than the set maximum water level.

[0080] Specifically, replenishing the water in the tank includes: keeping the drain valve closed and controlling the water inlet valve to open at a preset opening degree; detecting the water level in the tank in real time; and controlling the water inlet valve to close when the water level in the tank reaches the set maximum water level.

[0081] Determining whether the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range includes: acquiring a first turbidity value detected by the first turbidity sensor; acquiring a second turbidity value detected by the second turbidity sensor; if at least one of the first turbidity value and the second turbidity value is greater than the upper limit of the preset turbidity range, then it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range. Preferably, based on the upper limit of the preset turbidity range, and according to at least one of the first turbidity value and the second turbidity value, the on / off state of the drain valve and the water inlet valve is controlled to achieve control of the turbidity of the water in the tank, so as to achieve water replacement or replenishment in the tank by controlling the turbidity and / or water level of the water in the tank. The outlet is connected to a circulating water pump for pumping water from the tank and spraying it onto the workpiece. This can be achieved using methods such as... Figure 3 The water turbidity detection module shown detects the first turbidity value and the second turbidity value.

[0082] Here, all preset values ​​can be customized. In this embodiment, the upper limit of the preset turbidity range can be set to ensure that the intensity of light received by the light receiver is not less than 70% of the emitted intensity. The set critical water level value can be set to 90% of the highest water level value, that is, when the water level difference is 10%. The set minimum water level value can be set to 5% of the highest water level value, that is, when the water level difference is 95%, drainage will stop. The specific values ​​are set according to the height of the water outlet. If both the turbidity value and the water level value in the water tank are within the preset range, the control device of the water tank will not perform any operation. In this case, and during the water replenishment process, the testing personnel can perform ultrasonic testing normally. However, the testing personnel cannot perform ultrasonic testing when changing the water.

[0083] In some embodiments, the control method of the water tank further includes: adjusting the opening degree of the water injection valve according to the water flow rate of the water injection port, that is: when the water injection valve is opened at a preset opening degree, the water flow rate of the water injection port is detected in real time; and the opening degree of the water injection valve is adjusted according to the water flow rate of the water injection port so that the water flow rate of the water injection port is within the preset water flow rate range.

[0084] The following is combined with Figure 8 The schematic diagram shown is a flowchart of an embodiment of the method of the present invention for adjusting the opening degree of the water injection valve according to the water flow rate of the water injection port. The specific process of adjusting the opening degree of the water injection valve according to the water flow rate of the water injection port is further explained, including steps S410 to S450.

[0085] Step S410: Detect the water flow rate at the water inlet.

[0086] Step S420: Receive the water flow rate of the water inlet and determine whether the water flow rate of the water inlet is within the preset water flow rate range to control the opening degree of the water inlet valve.

[0087] Step S430: If it is determined that the water flow rate of the water inlet is not within the preset water flow rate range, then determine whether the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range.

[0088] In step S440, if it is determined that the water flow rate at the water inlet is greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is reduced; if the water flow rate at the water inlet is not greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is increased.

[0089] Step S450: Until the water flow rate of the water inlet is detected to be within the preset water flow rate range, stop adjusting the opening of the water inlet valve to control the water flow rate of the water inlet and keep the water flow rate of the water inlet within the preset water flow rate range.

[0090] The preset opening degree is the opening degree that ensures the water flow rate is within a preset range. However, in practical applications, the present invention uses self-made deionized water, which is manually controlled by the operator. This may result in differences in the water flow rate or water pressure in the inlet pipe, potentially causing the water flow rate to be outside the preset range even when the valve is opened at the preset opening degree. Therefore, the use of a flow meter can correct the opening degree of the water inlet valve, ensuring that the water flow rate at the inlet is always within the preset range to prevent the generation of air bubbles, which could affect the accuracy of ultrasonic testing.

[0091] In some embodiments, the water tank control method of the present invention further includes: when changing or replenishing the water in the water tank by controlling the turbidity and / or water level of the water in the water tank, controlling a preset warning component to issue a warning signal to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the carbon fiber composite water-penetrating ultrasonic testing equipment until the operation of changing or replenishing the water in the water tank by controlling the turbidity and / or water level of the water in the water tank is completed.

[0092] Specifically, the warning component can be a flashing light group, a buzzer, etc. In this embodiment, a flashing light group is used. When the water in the water tank is changed or replenished by controlling the turbidity and / or water level in the water tank, the control module controls the flashing light group to flash continuously, prompting the user of the carbon fiber composite material water-penetrating ultrasonic testing equipment, i.e., the testing personnel, to stop using the water-penetrating ultrasonic testing equipment for ultrasonic testing, because during this process, the turbidity value of the water in the water tank does not meet the turbidity requirements of the propagation medium required for ultrasonic testing, and the water volume is insufficient; until the water change is completed, the flashing light group goes out. At this time, the testing personnel can use the carbon fiber composite material water-penetrating ultrasonic testing equipment again for ultrasonic testing.

[0093] Since the processing and functions implemented by the water tank control method in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned water tank control device, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0094] The technical solution of this invention uses a water turbidity detection module to detect the turbidity value of the water in the tank and an ultrasonic liquid level detection module to detect the water level value of the water in the tank. This allows for the control of water replacement or replenishment in the tank, which helps to achieve automatic water replacement when the turbidity value of the water in the tank increases during the water jet penetration ultrasonic detection process. At the same time, automatic water replenishment can be achieved through the device and method provided by this invention when the water level decreases. This invention features rich functionality and high control precision. In this way, by automatically detecting the turbidity and water level of the circulating water in the tank used by the water jet penetration ultrasonic testing equipment for carbon fiber composite materials, and automatically performing water replacement and replenishment operations, the accuracy of water quality and quantity control in the circulating water tank of the water jet penetration ultrasonic testing equipment for carbon fiber composite materials is improved. It is also time-saving and labor-saving, solving the tedious operation of frequent replacement and replenishment of circulating water by testing personnel in actual testing, and improving efficiency. At the same time, it is beneficial to improve the propagation quality of ultrasonic waves using the circulating water in the tank as the propagation medium (such as ultrasonic wave propagation coupling quality or ultrasonic wave propagation coupling effect) when the water jet penetration ultrasonic testing equipment for carbon fiber composite materials uses the circulating water in the tank to perform defect detection on carbon fiber composite workpieces. This improves the detection accuracy of defect detection on carbon fiber composite workpieces and solves the problem of water shortage in the tank caused by various reasons, that is, the water level in the tank is lower than the height of the circulating water outlet, which may cause air bubbles in the circulating water to affect the propagation of ultrasonic waves during the detection, thus realizing automatic water replenishment.

[0095] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0096] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control device for a water tank, characterized in that, The water tank is used in a water-jet penetration ultrasonic testing device for carbon fiber composite materials, serving as the water tank for this device. The water tank stores and provides the water required for the device to perform water-jet penetration ultrasonic testing. The water tank has a drain outlet for opening a drainage pipe and a water inlet for opening a water inlet. A drain valve for controlling the flow of the drainage pipe is installed at the drain outlet, and a water inlet valve for controlling the flow of the water inlet is installed at the water inlet. The water tank also has an outlet connected to a circulating water pump in the device. The control device for the water tank includes a water turbidity detection module, an ultrasonic level detection module, a control module, and a flow meter installed at the water inlet. The water turbidity detection module is installed on the inner wall of the water outlet pipe and is used to detect the turbidity value of the water in the water tank and send the turbidity value of the water in the water tank to the control module. The ultrasonic liquid level detection module is used to detect the water level in the water tank and send the water level to the control module. According to the shape of the carbon fiber composite workpiece, the carbon fiber composite water jet penetration ultrasonic testing equipment sprays deionized water from the water tank from the outlet to the upper and lower sides or the inner and outer sides of the carbon fiber composite workpiece through a circulating water pump to form a water jet column. The two spray heads are equipped with ultrasonic probes. The sprayed water column serves as the propagation medium for ultrasonic waves to reach and penetrate the workpiece under test to achieve ultrasonic testing. The sprayed water will fall back into the water tank for recycling. The control module receives the turbidity value and water level value of the water in the tank, and controls the opening and closing of the drain valve and the water injection valve based on the turbidity value and water level value of the water in the tank, so as to control the turbidity and water level of the water in the tank, and control the water required for water penetration ultrasonic testing of the carbon fiber composite material. The use of the flow meter can correct the opening of the water injection valve, so that the water flow at the water injection port is always within the preset range to avoid the generation of air bubbles, which would affect the accuracy of ultrasonic testing.

2. The control device for the water tank according to claim 1, characterized in that, The control module controls the opening and closing of the drain valve and the water inlet valve based on the turbidity value and water level value of the water in the tank, thereby controlling the turbidity and water level of the water in the tank, including: The control module is used to determine whether the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range; If it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range, the drain valve is controlled to open the drain pipe so that the water in the tank can be discharged from the tank through the drain pipe until the water level in the tank reaches the set minimum water level. Then the drain valve is controlled to close the drain pipe so that the tank stops draining. When the drain valve is closed, the water injection valve is controlled to open the water inlet pipe to a preset opening degree, so that external water is injected into the water tank through the water inlet pipe until the water level in the water tank reaches the set maximum water level. Then, the water injection valve is controlled to close the water inlet pipe to stop the water inlet pipe from entering, thus completing the water filling of the water tank. and, The control module is also used to determine whether the water level in the tank is lower than the set critical water level. If it is determined that the water level in the tank is lower than the set critical water level, the drain valve is controlled to shut off the drain pipe, and the water inlet valve is controlled to open the water inlet pipe to a preset opening degree, so that external water is injected into the tank through the water inlet pipe. When the water level in the tank reaches the set maximum water level, the water injection valve is controlled to shut off the water inlet pipe, thus stopping the water inlet from entering the tank. Wherein, the set maximum water level value is the highest water level value of the water tank, the set critical water level value is the lowest water level value of the water tank, the set critical water level value is the water level value sufficient to maintain the water jet penetration ultrasonic testing equipment for the carbon fiber composite material, the set critical water level value is less than the set maximum water level value, and the set minimum water level value is less than the set critical water level value.

3. The control device for the water tank according to claim 1 or 2, characterized in that, The outlet pipe has a first height position and a second height position along the height direction of the water tank. The first height position is a position farther from the bottom of the water tank, and the second height position is a position closer to the bottom of the water tank. The water turbidity detection module includes a first turbidity sensor and a second turbidity sensor. The first turbidity sensor is located at the first height position of the outlet pipe, and the second turbidity sensor is located at the second height position of the outlet pipe. The first height position is higher than the second height position along the height direction of the water tank. The water turbidity detection module detects the turbidity value of the water in the tank and sends the turbidity value of the water in the tank to the control module, including: The first turbidity sensor is used to detect the turbidity value of the water located at the first height position, record it as the first turbidity value, and send the first turbidity value to the control module; The second turbidity sensor is used to detect the turbidity value of the water at the second height position, record it as the second turbidity value, and send the second turbidity value to the control module; The turbidity value of the water at the first height position and the turbidity value of the water at the second height position are taken as the turbidity value of the water in the tank.

4. The control device for the water tank according to claim 1 or 2, characterized in that, The flow meter is electrically connected to the control module; wherein... The flow meter is used to detect the water flow rate at the water inlet and send the water flow rate at the water inlet to the control module; The control module is also used to receive the water flow rate of the water inlet and determine whether the water flow rate of the water inlet is within a preset water flow rate range in order to control the opening degree of the water inlet valve. If it is determined that the water flow rate of the water inlet is not within the preset water flow rate range, then it is determined whether the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range. If the water flow rate at the water inlet is determined to be greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is controlled to decrease; if the water flow rate at the water inlet is not greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is adjusted to increase. The opening of the water inlet is stopped when the water flow rate is detected to be within the preset water flow rate range, so as to control the water flow rate of the water inlet and keep the water flow rate of the water inlet within the preset water flow rate range.

5. The control device for the water tank according to claim 3, characterized in that, The flow meter is electrically connected to the control module; wherein... The flow meter is used to detect the water flow rate at the water inlet and send the water flow rate at the water inlet to the control module; The control module is also used to receive the water flow rate of the water inlet and determine whether the water flow rate of the water inlet is within a preset water flow rate range in order to control the opening degree of the water inlet valve. If it is determined that the water flow rate of the water inlet is not within the preset water flow rate range, then it is determined whether the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range. If the water flow rate at the water inlet is determined to be greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is controlled to decrease; if the water flow rate at the water inlet is not greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is adjusted to increase. The opening of the water inlet is stopped when the water flow rate is detected to be within the preset water flow rate range, so as to control the water flow rate of the water inlet and keep the water flow rate of the water inlet within the preset water flow rate range.

6. The control device for the water tank according to any one of claims 1, 2, and 5, characterized in that, The control device for the water tank also includes an alarm component; The control module is also used to control the warning component to issue a warning signal when the water in the tank is changed or replenished by controlling the turbidity and water level of the water in the tank, so as to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the carbon fiber composite water-penetrating ultrasonic testing equipment until the operation of changing or replenishing the water in the tank by controlling the turbidity and water level of the water in the tank is completed.

7. The control device for the water tank according to claim 3, characterized in that, The control device for the water tank also includes an alarm component; The control module is also used to control the warning component to issue a warning signal when the water in the tank is changed or replenished by controlling the turbidity and water level of the water in the tank, so as to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the carbon fiber composite water-penetrating ultrasonic testing equipment until the operation of changing or replenishing the water in the tank by controlling the turbidity and water level of the water in the tank is completed.

8. The control device for the water tank according to claim 4, characterized in that, The control device for the water tank also includes an alarm component; The control module is also used to control the warning component to issue a warning signal when the water in the tank is changed or replenished by controlling the turbidity and water level of the water in the tank, so as to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the carbon fiber composite water-penetrating ultrasonic testing equipment until the operation of changing or replenishing the water in the tank by controlling the turbidity and water level of the water in the tank is completed.

9. A method for controlling a water tank using a control device for a water tank as described in any one of claims 1 to 8, characterized in that, The water tank is used in a water-jet penetration ultrasonic testing device for carbon fiber composite materials, serving as the water tank for the device. The water tank stores and provides the water required for the device to perform water-jet penetration ultrasonic testing. The water tank has a drain outlet for opening a drainage pipe and a water inlet for opening a water inlet. A drain valve for controlling the flow of the drainage pipe is installed at the drain outlet, and a water inlet valve for controlling the flow of the water inlet is installed at the water inlet. The control method for the water tank includes: The turbidity value of the water in the tank is detected; Detect the water level in the tank; The device receives the turbidity value and the water level value of the water in the tank, and controls the opening and closing of the drain valve and the water injection valve based on the turbidity value and the water level value of the water in the tank, so as to control the turbidity and water level of the water in the tank and control the water required for water penetration ultrasonic testing of the carbon fiber composite material.

10. The method for controlling a water tank according to claim 9, characterized in that, Based on the turbidity value and water level of the water in the tank, the opening and closing of the drain valve and the water inlet valve are controlled to achieve control over the turbidity and water level of the water in the tank, including: Determine whether the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range; If it is determined that the turbidity value of the water in the tank is greater than the upper limit of the preset turbidity range, the drain valve is controlled to open the drain pipe so that the water in the tank can be discharged from the tank through the drain pipe until the water level in the tank reaches the set minimum water level. Then the drain valve is controlled to close the drain pipe so that the tank stops draining. When the drain valve is closed, the water injection valve is controlled to open the water inlet pipe to a preset opening degree, so that external water is injected into the water tank through the water inlet pipe until the water level in the water tank reaches the set maximum water level. Then, the water injection valve is controlled to close the water inlet pipe to stop the water inlet pipe from entering, thus completing the water filling of the water tank. and, Determine whether the water level in the tank is lower than the set critical water level. If it is determined that the water level in the tank is lower than the set critical water level, the drain valve is controlled to shut off the drain pipe, and the water inlet valve is controlled to open the water inlet pipe to a preset opening degree, so that external water is injected into the tank through the water inlet pipe. When the water level in the tank reaches the set maximum water level, the water injection valve is controlled to shut off the water inlet pipe, thus stopping the water inlet from entering the tank. Wherein, the set maximum water level value is the highest water level value of the water tank, the set critical water level value is the lowest water level value of the water tank, the set critical water level value is the water level value sufficient to maintain the water jet penetration ultrasonic testing equipment for the carbon fiber composite material, the set critical water level value is less than the set maximum water level value, and the set minimum water level value is less than the set critical water level value.

11. The method for controlling a water tank according to claim 9 or 10, characterized in that, Also includes: Detect the water flow rate at the water inlet; The opening degree of the water injection valve is controlled by receiving the water flow rate from the water inlet and determining whether the water flow rate from the water inlet is within a preset water flow rate range. If it is determined that the water flow rate of the water inlet is not within the preset water flow rate range, then it is determined whether the water flow rate of the water inlet is greater than the maximum value within the preset water flow rate range. If the water flow rate at the water inlet is determined to be greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is controlled to decrease; if the water flow rate at the water inlet is not greater than the maximum value within the preset water flow rate range, the opening of the water inlet valve is adjusted to increase. The opening of the water inlet is stopped when the water flow rate is detected to be within the preset water flow rate range, so as to control the water flow rate of the water inlet and keep the water flow rate of the water inlet within the preset water flow rate range.

12. The method for controlling a water tank according to claim 9 or 10, characterized in that, Also includes: When the water in the tank is changed or replenished by controlling the turbidity and water level, a preset warning component is controlled to issue a warning signal to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the equipment until the operation of changing or replenishing the water in the tank by controlling the turbidity and water level is completed.

13. The method for controlling a water tank according to claim 11, characterized in that, Also includes: When the water in the tank is changed or replenished by controlling the turbidity and water level, a preset warning component is controlled to issue a warning signal to remind the operator of the carbon fiber composite water-penetrating ultrasonic testing equipment to stop using the equipment until the operation of changing or replenishing the water in the tank by controlling the turbidity and water level is completed.

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