KR20240038690A - Water pressure test device and control method of Ship-building and the ocean structure for piping - Google Patents

Abstract

The present invention relates to a hydraulic testing device and control method for piping for ships and marine structures. The present invention relates to a hydraulic pressure testing device for piping used in ships and marine structures, which includes a water tank for storing water, a high-pressure pump for drawing water inside the water tank and discharging it at high pressure, and a motor for operating the high-pressure pump. and an exhaust valve that discharges air in the water supply pipe before high-pressure pumping of the high-pressure pump, an automatic pressure control valve that regulates the pressure of the water discharged from the high-pressure pump and bypasses the water when overpressure occurs, and the automatic When the water pressure exceeds the set pressure due to a malfunction of the pressure control valve or blockage by foreign substances, water pressure is applied to the safety valve that bypasses the water and the pipe, and when re-pressurizing, the water pressure is supplied to release the already applied pressure. At the same time as the water is cut off, a differential pressure and drain valve that drains the water from the pipe, an open/close valve that finally opens and closes the water flowing into the pipe, a sensor unit formed remotely to detect the water pressure of the pipe, and the water pressure of the sensor unit It includes a converter that converts the signal into an electrical signal and a control unit that receives a signal from the sensor unit and has a built-in calculation unit that operates and processes the input signal, and converts the water pressure detected by the sensor unit into an electric signal through the converter. The control unit recognizes the value as data.

Description

{Water pressure test device and control method of Ship-building and the ocean structure for piping}

The present invention relates to a hydraulic testing device and control method for piping for ships and marine structures. More specifically, the present invention relates to a hydraulic testing device and control method for piping for marine structures that can control the water pressure in the piping and monitor the piping using artificial intelligence. It relates to devices and control methods.

In general, piping is an oil pipe, gas pipe, or water pipe that transports fluids such as oil, gas, or water over a certain distance. It is a pipe or other facility installed for the purpose of water supply and drainage, or the installation of such facilities. Pipes such as oil pipes, gas pipes, or water pipes must be inspected for leaks by periodically performing hydraulic or air tightness tests after installation or as they age.

Furthermore, in ships and marine structures, numerous pipes such as drinking water lines, air lines, steam lines, and fire extinguishing lines are installed, and the pipes are checked for abnormalities in advance through pipe tests appropriate for each purpose.

For example, after jointing multiple pipes, attaching a valve or cock, etc., injecting air or water into the pipe equipped with the valve or cock, etc., and measuring the pressure within the pipe with a gauge to check for abnormalities in advance. Check. At this time, the pressure of the injected air or water is, for example, 1.5 times the operating pressure to ensure that there is no problem when using the pipe.

The hydraulic pressure test of the piping for ships or marine structures is to determine whether there is a possibility of damage to the piping for ships or marine structures and to select defective piping and check its soundness. In addition to this hydraulic pressure test, it is necessary to control the water pressure of piping for ships, etc. Therefore, the development of technology to maintain constant water pressure is also becoming very important.

Republic of Korea Patent Publication No. 2013-0087253 Republic of Korea Patent Publication No. 2021-0076639 Republic of Korea Patent Publication No. 2006-0094149 Republic of Korea Patent Publication No. 2013-0089339 Republic of Korea Patent Registration No. 10-2063165

In order to achieve this purpose, the present invention enables piping for ships and marine structures to prevent water leakage from occurring at the piping connection points of ships or marine structures by enabling not only general water pressure tests but also impact water pressure tests before operating ships, etc. The purpose is to provide a hydraulic testing device and control method.

In addition, another object of the present invention is to provide a hydraulic testing device for piping for ships and marine structures to prevent water leakage from occurring at the connection portion of the piping by enabling not only regular hydraulic testing but also shock hydraulic testing, which is a much more advanced condition, and The purpose is to provide a control method.

In addition, the aim is to provide a hydraulic testing device and control method for piping for ships and marine structures that can control the water pressure by inputting the set value of the water pressure in advance using a control system, thereby maintaining a constant water pressure at all times.

In order to achieve this object, the present invention provides a hydraulic pressure testing device for piping used in ships and marine structures, comprising a water tank for storing water, a high-pressure pump for drawing water into the water tank and discharging it at high pressure, and A motor that operates the high-pressure pump, an exhaust valve that discharges air in the water supply pipe before high-pressure pumping of the high-pressure pump, and an automatic device that controls the pressure of the water discharged from the high-pressure pump and bypasses the water when overpressure occurs. When the water pressure exceeds the set pressure due to malfunction of the pressure control valve and the automatic pressure control valve or blockage of foreign substances, water pressure is applied to the safety valve and the pipe that bypasses the water, and when re-pressurizing, the pressure already applied. At the same time as blocking the water supplied to release the water, a differential pressure and drain valve that drains the water from the pipe, an open/close valve that finally opens and closes the water flowing into the pipe, and a sensor formed remotely to detect the water pressure of the pipe A converter that converts the water pressure of the sensor unit into an electrical signal, a control unit with a built-in arithmetic unit that receives signals from the sensor unit and calculates and processes the input signal, and a control unit that receives the signal from the arithmetic unit of the control unit and continuously adjusts the air pressure. It includes a pneumatic converter for controlling and a braking device for braking using the pneumatic pressure of the pneumatic converter, and the control unit converts the water pressure detected by the sensor unit into an electrical signal through the converter as data. It is characterized by recognition.

In addition, when applying water pressure to the pipe, the water pressure preset using the high pressure pump and the control unit is repeatedly applied a predetermined number of times for a certain period of time.

In addition, the control unit is equipped with a display unit and is characterized in that it compares the signal input to the display unit with a value set in advance by the operator.

In addition, when an arbitrary value is input, the control unit outputs the input value, and when changing from manual operation to automatic operation, control is performed based on the previous output value.

As explained above, the hydraulic test device and control method for piping for ships and marine structures of the present invention can perform hydraulic pressure tests and impact hydraulic tests on the piping of ships and marine structures, so it is possible to use piping actually installed on ships, etc. It is tested beforehand to clearly determine whether it can withstand water pressure, and has the effect of controlling water pressure.

Figure 1 is a configuration diagram of a hydraulic test device for piping for ships and marine structures.
Figure 2 is a schematic diagram of the hydraulic pressure control system.
Figure 3 is a block diagram of a hydraulic pressure control system.
Figure 4 is a flow chart of a water pressure control method using a water pressure control system.
Figure 5 is a schematic diagram schematically showing the connection relationship between a monitoring system for piping for ships and marine structures using artificial intelligence techniques.
Figure 6 is a conceptual diagram showing the process of selecting an effective natural frequency by applying artificial intelligence techniques to acceleration data in the artificial intelligence unit of Figure 5.
Figure 7 is a diagram schematically showing the process of monitoring piping for ships and marine structures using a monitoring system using artificial intelligence techniques.
Figure 8 is a flow chart sequentially describing the process of monitoring pipes using a monitoring system using artificial intelligence techniques according to an embodiment of the present invention of Figure 7.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. First, when adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible, even if they are shown in different drawings.

Additionally, in the following description of the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In addition, it should be noted in advance that the terms used in this application are only used to describe specific embodiments, and are not intended to limit the invention, and that singular expressions also mean plural expressions unless the context clearly indicates otherwise. I want to leave it.

Figure 1 is a configuration diagram of a hydraulic pressure testing device for piping for ships and marine structures, Figure 2 is a schematic diagram of a water pressure control system, Figure 3 is a block diagram of the water pressure control system, and Figure 4 is a water pressure control method using a water pressure control system. It is a flow chart, and Figure 5 is a schematic diagram schematically showing the connection relationship between the monitoring system of the piping for ships and marine structures using artificial intelligence techniques, and Figure 6 is a diagram showing the artificial intelligence technique applied to acceleration data in the artificial intelligence unit of Figure 5. It is a conceptual diagram showing the process of selecting the effective natural frequency by applying it, Figure 7 is a diagram schematically showing the process of monitoring piping for ships and marine structures using a monitoring system using artificial intelligence techniques, and Figure 8 is a diagram This is a flowchart sequentially describing the process of monitoring pipes using a monitoring system using artificial intelligence techniques according to an embodiment of the present invention in 7.

Figure 1 is a configuration diagram of a hydraulic testing device for piping for ships and marine structures.

As shown, the hydraulic pressure test device for piping (100, hereinafter abbreviated as 'piping') for ships and marine structures of the present invention includes a water tank (10) storing water, and water in the water tank (10). A high-pressure pump 20 that draws in and discharges it at high pressure, a motor 30 that operates the high-pressure pump 20, and a motor 30 that discharges air in the water supply pipe (not shown) before high-pressure pumping of the high-pressure pump 20. Malfunction and clogging of the exhaust valve 40, the automatic pressure control valve 50, which controls the pressure of the water discharged from the high pressure pump 20 and bypasses the water when overpressure occurs, and the automatic pressure control valve 50. When the water becomes above the set pressure, the safety valve 60 that bypasses the water, applies water pressure to the pipe 100, and then blocks the supplied water to release the already applied pressure when re-pressurizing. At the same time, it includes a differential pressure and drain valve 70 that drains the water from the pipe 100, and an opening/closing valve 80 that finally opens and closes the water flowing into the pipe 100.

In order to filter foreign substances in the water flowing into the water tank 10, a strainer 5 is provided on the inlet line (reference numeral omitted), and also on the outflow line (reference numeral omitted) of the water tank 10. ) is also provided with a strainer (5a) that filters foreign substances contained in the outflowing water.

The strainer (5) of the inflow line is a separable variable type that allows the filter to be separated and cleaned at any time, and foreign substances that may cause abnormalities to the component parts are initially removed, thereby preventing problems that may occur due to contamination of the supplied water. fundamentally solves the problem.

The strainer 5a of the outflow line is independent of the strainer 5 of the inflow line because the water in the pipe 100 is mixed into the water tank 10 after the hydraulic test process or the pipe test is completed. It is designed to filter the water flowing out of (10).

Furthermore, the water tank 10 can be configured to be portable for easy mobility, and after the initial supply of water, it can be used to enable continuous water pressure testing without supplying additional water, and then returned to the water tank 10. is to be reinstated

Therefore, the above-described automatic pressure control valve 50, safety valve 60, and differential pressure and drain valve 70 each bypass or return the return pipe 50a (60a) to return the water to the water tank 10. )(70a) is connected.

The on-off valve 80 uses an actuator solenoid valve system that can apply pressure and differential pressure by an electrical signal from a remotely installed control unit 120.

Reference numeral 'G' installed before and after the differential pressure and drain valve 70 is a pressure gauge.

The hydraulic pressure test device for the pipe 100 configured as described above operates as follows.

First, fill the water tank 10 with raw water, open the exhaust valve 40, operate the motor 30 and the high pressure pump 20, and discharge the air in the line to the device. Ensure that it operates smoothly.

Next, connect the discharge line (not shown) of the piping test device to the water supply, hot water supply, or other piping to be tested using a joint. In this state, the motor 30 and the high pressure pump 20 are operated to pressurize high-pressure water into the pipe 100.

The water is first automatically adjusted to the desired pressure by the automatic pressure control valve 50. For the normal pipe 100, the hydrostatic pressure test is adjusted to a pressure of 10Kg/cm ² and the shock hydraulic pressure test is operated at a set pressure of, for example, 15Kg/cm ² . The set pressure is set variably to suit the field situation.

However, when the pressure is higher than the set pressure due to a malfunction of the automatic pressure control valve 50 or a blockage of a foreign object in the line through which the water flows, the safety valve 60 is opened to prevent damage to parts and lines. The operating principle of the automatic pressure control valve 50 and the safety valve 60 is that when the pressure is above a certain level, it is automatically detected by a pressure sensor (not shown) and a portion of the water is sent through the return pipes 50a and 60a. The goal is to restore it through.

First, as in the past, the water is adjusted to a pressure of 10Kg/cm ² by the automatic pressure control valve 50, and the differential pressure and drain valve 70 and the opening/closing valve 80 are opened for a certain period of time (e.g. 30 seconds). Perform a hydrostatic pressure test.

Next, an impact water pressure test is performed. The water is adjusted to a set pressure (for example, a pressure of 15 Kg/cm ² ) by the automatic pressure control valve 50, and the differential pressure and drain valve 70 and the opening and closing valve 80 are used. is opened to pressurize the high-pressure water into the pipe 100.

At this time, the port on the inlet line side of the differential pressure and drain valve 70 is opened and the port on the return pipe 70a side is closed.

After pressurization, when a certain period of time has elapsed, the port on the return pipe (70a) side of the differential pressure and drain valve 70 is opened to release the pressurization of the test pipe, and the port on the inlet line side is closed.

At this time, the pressurized water returns to the water tank 10 through the return pipe 70a. Next, the opening/closing valve 80 is blocked.

Again, the differential pressure and drain valve 70 and the on-off valve 80 are opened and the high-pressure water pressurizes the test pipe to repeat the above-described process.

This action of applying shock water pressure once is repeated a preset number of times to form one section, and one cycle consists of 5 sections.

Water leakage is checked for 5 seconds between sections, and if water leakage occurs, an alarm is activated. Additionally, the number of impacts and number of cycles of each section are variable, and the number of impacts and number of cycles are counted.

The differential pressure and drain valve 70 and the opening/closing valve 80 are opened and closed by an actuator operated by a control unit 120 containing a micro computer. This control unit 120 also controls the operations of the motor 30, the automatic pressure control valve 50, and the safety valve 60. Therefore, when applying water pressure to the pipe 100, the water pressure preset using the high pressure pump 20 and the control unit 120 is repeatedly applied to the pipe 100 a predetermined number of times over a certain period of time.

In this way, the hydraulic pressure test device for the pipe 100 of this embodiment performs not only a static hydraulic pressure test but also an impact hydraulic pressure test under more severe conditions, so that it can withstand even if shock hydraulic pressure such as water hammer occurs within the pipe 100. Lets you decide if you can do it.

Below, a description will be given of the control system that constantly controls the water pressure of the pipe 100 in the water pressure test device described above with accompanying drawings.

2 is a schematic diagram of a system for controlling the water pressure of the pipe 100. As shown, a sensor unit (S) and the sensor are used to detect the water pressure of the pipe 100, which is a very important component of the water pressure test device. A control unit 120 having a built-in calculation unit 121 that receives a signal from the unit S, drives the power source of the water pressure control system, and processes the input signal therein, and a calculation unit formed inside the control unit 120 ( It consists of a pneumatic converter 130 that receives the signal from 121 and continuously adjusts the air pressure by an electric signal, and a braking device 140 that uses the pneumatic pressure of the pneumatic converter 130 to perform braking. do. For reference, the pneumatic converter 130 refers to a device that receives an electrical signal and converts it into pneumatic pressure for control.

Hereinafter, the operational relationship of the control system for controlling the water pressure of the pipe 100 having the above configuration will be described.

First, the pipe 100 is passed through the sensor unit S spaced a predetermined distance away, and the power is turned on through the control unit 120 to drive the entire system. For power, an output on/off switch (not shown) is installed to simplify output operation. In addition, the test is conducted by connecting a water tank 10, etc. to supply a certain amount of water into the pipe 100.

Then, the sensor unit (S) detects the water pressure and outputs it as an electric signal through the converter (110). The value output through the converter 110 is input to the control unit 120.

As shown in FIG. 3, a calculation unit 121 is accommodated inside the control unit 120. The calculation unit 121 includes an input unit 121a that inputs an electrical signal value, and an input unit 121a that passes through the input unit 121a. It is based on the CPU (Central Process Unit) method, which consists of a microprocessor 121d and an output unit 121b that outputs the processed value to the memory 121c. Here, since the technology related to the calculation unit 121 and the CPU method is widely known, detailed description thereof will be omitted.

Therefore, the control unit 120 detects and converts the signal of the sensor unit (S) to recognize data and processes control situations, control, monitoring, alarms, etc. from the values input to the control unit 120. It is done.

The control method of the control unit 120 is that when an arbitrary value is input, the input value is output, and when manual operation is converted to automatic operation, control is performed based on the previous output value.

In addition, the control system for controlling the water pressure of the pipe 100 according to this embodiment is connected to the pipe 100 through a network and includes a sensor unit (S) formed at a distance from the upper part of the pipe 100 to detect water pressure. It is controlled by outputting it as an electrical signal, and the water pressure can be controlled and maintained at a constant level through the circuit of the calculation unit 121 in the control unit 120.

Therefore, water pressure control in the pipe 100 is controlled by the function of the calculation unit 121 of the control unit 120, and the signal from the sensor unit S is converted to the converter 110 and input to the control unit 120. It is controlled by digital values, and the driver, etc. can freely modify the necessary setting values using the display unit 122, and the setting value, operating water pressure value, and control output value are displayed in graphs and numbers, making correction easy. This allows adjustments to be made without installing separate equipment. The control unit 120 is equipped with a display unit 122, and a driver or the like compares a signal input to the display unit 122 with a preset value.

In other words, the signal of the sensor unit (S) is externally converted so that the control unit 120 can directly recognize it as data, eliminating the need to change the sensor unit and electropneumatic converter installed in the existing system.

Therefore, the signal from the sensor unit (S) is converted to the converter 110, sent to the calculation unit 121 built inside the control unit 120, input to a predetermined analog input unit (not shown), and the input value is converted to a digital value. It is converted and saved.

In this way, the processed signal from the calculation unit 121 inside the control unit 120 is received and the air pressure converter 130 continuously adjusts the air pressure by an electric signal, and the electropneumatic converter 130 continuously changes the air pressure. The air pressure applied is used to generate appropriate braking in the braking device 140, allowing constant water pressure to be maintained at all times.

In other words, the signal corresponds to water pressure, and when it is less than a predetermined water pressure (signal) value, the braking force of the braking device 140 is increased, and when it is greater than a predetermined water pressure (signal) value, the braking force of the braking device 140 is increased. It is characterized by reducing the braking force of.

In addition, the characteristic of the water pressure control system described above is that the speed control system's conversion operation from automatic to manual according to the speed of the machine is such that when the working speed is above a certain level, the water pressure control system switches to automatic mode. , if the speed is below a certain speed, it switches to manual mode, so the operator does not need to operate the automatic/manual switch, etc., and can easily switch between automatic or manual depending on the working speed.

In addition, during manual operation of this water pressure control system, it is controlled to prevent errors due to sudden changes in water pressure by automatically changing to the manual setting value based on the output value immediately before manual switching during automatic operation, and if the display unit 122 When a separate manual input value is input, the output is consistently output as much as the input value.

Incidentally, this water pressure control system has a hold function, so that when the water pressure control system is temporarily stopped, the voltage supplied to the water pressure control system is temporarily stored and memorized, and the water pressure control system is maintained. When restarting, it maintains the water pressure it had before stopping.

Hereinafter, with reference to FIG. 4, a method of controlling water pressure using the water pressure control system described above will be described. Explanations that overlap with what was explained previously will be omitted to some extent.

As shown, in the water pressure control method of controlling the water pressure using a sensor unit (S) installed at a predetermined distance from the pipe 100 to detect the water pressure of the water supplied to the pipe 100, A step of having the operator drive the control system (S 10), a step of determining whether the speed of the control system is above or below a certain level (S 20), and a step of going to manual mode if the speed is below a certain level (S 25). ) and, if the speed is above a certain level, the operator inputs the automatic setting value into the display unit 121 (S 30), and the installed sensor unit (S) detects the water pressure of the water pressure control system (S 40) ), the converter 110 calculates and converts the water pressure from the sensor unit (S) into a constant value and converts it into numbers (S 50), and the step of inputting the constant numerical value (current) (S 60) , converting the input value into a digital value and storing it (the control unit 120 recognizes the value converted into an electric signal in the above step as data) (S 70), and the stored digital value, A step (PID control) (S 80) of comparing the automatic setting value input from the display unit 122 in the step (S 30) and the actual water pressure value (value quantified through (S 70)), and an automatic The set value is compared with the actual water pressure value, an output value is given according to the deviation, and the water pressure is adjusted and controlled by the difference (S90).

Additionally, when going through the manual mode (S25), when an arbitrary value is manually input into the display unit 122, the input value is output.

Therefore, in the control system, the signal for water pressure control corresponds to water pressure, and when it is less than a predetermined water pressure (signal) value, the braking force of the braking device 140 is increased, and when it is greater than a predetermined water pressure (signal) value. In this way, the braking force of the braking device 140 is reduced.

In addition, when an arbitrary value is manually input into the display unit 122, the input value is output, and when the control system is converted from manual operation to automatic operation, control is performed based on the immediately preceding output value.

Below, another method of testing the water pressure of pipes will be described.

There is also a method of testing the hydraulic pressure of pipes by connecting two unit pipes (not shown) in the form of a package to each other and testing the water pressure using water or air as a medium.

The water pressure test method involves connecting the two unit pipes to each other, attaching a valve or cock (not shown), and injecting air or water into the two unit pipes equipped with the valve or cock, etc. By measuring the internal pressure with a gauge, any abnormalities are checked in advance.

At this time, the pressure of the injected air or water is, for example, 1.5 times the operating pressure so that there is no problem when using the pipe later.

Below, a drawing will be attached to explain the system and method for monitoring piping for ships and marine structures used in hydraulic testing devices using artificial intelligence.

As shown in FIG. 5, the pipe monitoring system using artificial intelligence includes an accelerometer 210 installed on one side of a plurality of pipes 100 to measure acceleration data according to vibration of the pipes 100; An artificial intelligence unit (220) that selects an effective natural frequency for each mode by filtering abnormal natural frequencies from the frequencies extracted by applying artificial intelligence techniques to acceleration data according to the vibration of the pipe 100 measured by the accelerometer 210. )and; a calculation unit 230 that calculates the water pressure applied to the pipe 100 using the selected effective natural frequency; It is configured to include a comparison unit 240 that verifies appropriateness by comparing the water pressure applied to the cable calculated by the calculation unit 230 with the standard water pressure used for management of the existing pipe 100.

Hereinafter, a monitoring system using artificial intelligence having the above configuration will be described.

The accelerometer 210 installed on one side of the pipe 100 is a device installed to check periodic dynamic characteristics such as natural frequency and attenuation of the pipe 100.

The artificial intelligence unit 220 applies artificial intelligence technology to the acceleration data according to the vibration of the pipe 100 measured by the accelerometer 210 and filters the abnormal natural frequency among the extracted frequencies to determine the effective natural frequency for each mode. It plays a selection role.

When selecting the effective natural frequency for each mode by filtering the abnormal natural frequency among the frequencies extracted using the artificial intelligence unit 220, the response signal measured using the PP technique (peak-picking) is subjected to Fourier transformation to determine the effective natural frequency. The natural frequency is selected.

As shown in FIG. 6, a method of extracting unique characteristic values using a response signal is applied to the acceleration data, and the eigenvalue extraction technique is a PP technique (peak-picking), which performs Fourier transformation on the measured response signal to obtain a spectrum. The peak frequency of is taken as the natural frequency.

Using the frequency analysis and frequency peak extraction module, the peak value of the frequency is extracted and the frequency of various time periods is expressed on the same graph. If this process is expanded by time period, the characteristics of the frequency peak value of the accelerometer distributed in the area of similar frequency can be confirmed. there is.

The natural frequency forms a boundary range for a certain frequency due to vibration characteristics when an external object, etc. impacts the pipe 100, or when water flows inside the pipe 100. The boundary range of the natural frequency is It can be used as a standard for constructing data for artificial intelligence learning.

The vibration characteristics of the pipe 100 are based on the energy law, so that each natural frequency is distributed at equal intervals by mode order. These characteristics are confirmed by analyzing the dynamic characteristics of the accelerometer, and when sufficient learning data is generated, the The peak value for the vibration mode of the pipe 100 becomes clear.

The calculation unit 230 serves to calculate the water pressure of the pipe 100 using the selected natural frequency.

When calculating the water pressure applied to the pipe 100, or A formula such as is used, which can be derived as Equation 1 below by using a formula using the relationship between water pressure and natural frequency.

Here, T is the water pressure, w is the weight per unit length (kN/m), g is the gravitational acceleration, L is the effective length (m), f is the frequency, and n is the vibration mode.

Alternatively, the value of the water pressure (T) can be obtained through regression analysis using multi-mode, using Equation 2 below.

Here, f _n is the frequency for the nth mode, and E1 is the bending rigidity of the pipe 100. If a and b are obtained according to the above equation, the graph shows the water pressure through the slope (a) and intercept (b) and the pipe (100). ), the bending stiffness can be calculated.

Meanwhile, the comparison unit 240 serves to verify adequacy by comparing the tension applied to the pipe 100 calculated by the calculation unit 230 with the existing standard water pressure used to manage the pipe 100. .

As shown in FIG. 7, the artificial intelligence learning unit 250 repeatedly re-learns from the artificial intelligence unit 220 when the comparison unit 240 completes verification of the water pressure applied to the pipe 100. It plays a role in enabling this to be recognized and the pattern for the eigenmode.

The process of allowing learning to occur in the artificial intelligence unit 220 from the artificial intelligence learning unit 250 is performed by converting raw data from the accelerometer 210 attached to the pipe 100 to the frequency by FFT (Fast Fourier Transform). It is used as a method of recognizing patterns for natural vibration modes by converting the frequency and amplitude into learning data and inputting it repeatedly.

When recognition of the pattern for the natural mode is completed, the management unit 260 monitors the pipe 100 by inputting the frequency to be verified and predicting the natural vibration mode by calculating the same pattern frequency as the natural vibration mode for the frequency to be verified. Thus, it serves to ensure that the water pressure testing device according to the present invention is continuously managed.

The management unit 260 recognizes the pattern of the frequency corresponding to the natural vibration mode by the artificial intelligence unit 220 to enable learning, and when the frequency for verification is input to the learning model, the frequency of the same pattern as the natural vibration mode A method of determining as a natural vibration mode is used.

The process of monitoring the piping 100 of the hydraulic pressure testing device of the present invention using the monitoring system using artificial intelligence having the configuration described above will be described with reference to FIG. 8 as follows.

First, the first step (S1) is performed to measure and collect acceleration data due to vibration of the pipe 100 using the accelerometer 210 installed on one side of the pipe 100 of the hydraulic pressure test device.

Then, the second step (S2) is performed to select the effective natural frequency for each mode by filtering out abnormal natural frequencies from the frequencies extracted by applying artificial intelligence techniques to the acceleration data.

In the second step, as described above, the effective natural frequency is selected by Fourier transforming the response signal measured using the PP technique (peak-picking).

Once the selection of the effective natural frequency for each mode is completed, the third step (S3) is performed to calculate the water pressure applied to the pipe 100 using the selected effective natural frequency.

When calculating the water pressure applied to the pipe 100 in the third step, or The same formula is used.

*Afterwards, the fourth step (S4) is performed to verify adequacy by comparing the calculated water pressure applied to the pipe 100 with the standard water pressure used for management of the existing pipe 100.

Then, when the verification of the water pressure applied to the pipe 100 is completed, the fifth step (S5) is performed in which the artificial intelligence unit 220 repeatedly performs re-learning to recognize the pattern for the unique mode. .

Finally, when the recognition of the pattern for the eigenmode is completed, the frequency to be verified is input and the pattern frequency equal to the natural vibration mode for the frequency to be verified is calculated to predict the eigenmode and detect the state of the pipe 100, By proceeding with the sixth step (S6) to ensure continuous management of the hydraulic testing device according to the present invention, the process of more closely monitoring the piping 100 used in the hydraulic testing device according to the present invention is completed.

The artificial intelligence monitoring system having the above-described configuration can accurately monitor the condition of the pipe 100 by more closely analyzing the pipe 100 through acceleration measurement data of the pipe 100, such as high water pressure, etc. It is possible to prevent accidents or failures in the hydraulic test device, including the pipe 100, due to this.

Those skilled in the art to which the present invention pertains as described above will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the above-described embodiments should be understood as illustrative and not restrictive.

The scope of the present invention is indicated by the appended claims rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

5, 5a: Strainer
10: water tank 20: high pressure pump
30: motor 40: exhaust valve
50: Control valve 60: Safety valve
70: Differential pressure and drain valve 80: Open/close valve
100: Piping 110: Converter
120: control unit 121: calculation unit
121a: input unit 121b: output unit
121c: Memory 121d: Microprocessor
122: Display unit
S: Sensor unit 130: Electropneumatic converter
140: Braking device
210: Acceleration unit 220: Artificial intelligence unit
230: calculation unit 240: comparison unit
250: Artificial Intelligence Learning Department 260: Management Department

Claims (1)

A water tank (10) for storing water;
A high-pressure pump (20) that draws water into the water tank (10) and discharges it at high pressure;
A motor 30 that operates the high pressure pump 20;
An exhaust valve (40) that discharges air in the water supply pipe before high-pressure pumping of the high-pressure pump (20);
An automatic pressure control valve (50) that controls the pressure of the water discharged from the high pressure pump (20) and bypasses the water when overpressure occurs;
A safety valve (60) that bypasses the water when the water exceeds the set pressure due to malfunction of the automatic pressure control valve (50) and blockage by foreign substances;
After applying water pressure to the pipe 100, a differential pressure and drain valve 70 for draining the water from the pipe 100 at the same time as blocking the supplied water to release the already applied water pressure when re-pressurizing;
An opening/closing valve (80) that finally opens and closes the water flowing into the pipe (100);
A sensor unit (S) formed remotely to detect water pressure in the pipe 100;
A converter 110 that converts the water pressure of the sensor unit (S) into an electrical signal; and
A control unit 120 with a built-in calculation unit 121 that receives signals from the sensor unit S and processes internal input signals;
A pneumatic converter 130 that receives the signal from the calculation unit 121 of the control unit 120 and continuously adjusts the air pressure;
A braking device 140 that performs braking using the pneumatic pressure of the electropneumatic converter 130;
In the water pressure control method of the water pressure testing device, where the control unit 120 recognizes the water pressure detected by the sensor unit (S) converted into an electric signal through the converter 110 as data,

A step of having an operator drive the hydraulic test device (S 10), a step of determining whether the speed of the control system is above or below a certain level (S 20), and a step of going to manual mode if the speed is below a certain level (S 10). S 25), a step where the operator inputs an automatic setting value into the display unit 121 if the speed is above a certain level (S 30), and a step where the installed sensor unit (S) detects the water pressure of the water pressure control system ( S 40), a step of converting the water pressure from the sensor unit (S) into a constant value by the converter 110 and converting it into numbers (S 50), and a step of inputting the constant numerical value (current) (S 60). ), converting the input value into a digital value and storing it (the control unit 120 recognizes the value converted into an electric signal in the step as data) (S 70), and the stored digital value A step (PID control) (S 80) of comparing the automatic setting value input from the display unit 122 in the step (S 30) and the actual water pressure value (value quantified through (S 70)) , It includes a step (S90) of comparing the automatic set value and the actual water pressure value, giving an output value according to the deviation, and adjusting and controlling the water pressure by the difference,
When going through the step of the manual mode (S25), when an arbitrary value is manually input into the display unit 122, the manually input value is output.
The water pressure testing device is monitored using artificial intelligence,
The monitoring system using artificial intelligence includes an accelerometer 210 installed on one side of a plurality of pipes 100 to measure acceleration data according to vibration of the pipes 100; An artificial intelligence unit (220) that selects an effective natural frequency for each mode by filtering abnormal natural frequencies from the frequencies extracted by applying artificial intelligence techniques to acceleration data according to the vibration of the pipe 100 measured by the accelerometer 210. )and; a calculation unit 230 that calculates the water pressure applied to the pipe 100 using the selected effective natural frequency; Characterized by comprising a comparison unit 240 that verifies appropriateness by comparing the water pressure applied to the cable calculated by the calculation unit 230 with the existing standard water pressure used for management of the pipe 100. How to control water pressure in a water pressure testing device.