A pressure-dividing controlled valve test system

Abstract

This utility model discloses a valve testing system with pressure-dividing control. The system includes a compressor, a pressure-dividing device, a control system, and a test piping assembly. The compressor outputs an initial pressure, which, through the coordinated action of various pressure regulating valves, pressure detection units, and a main valve in the pressure-dividing device, achieves high, medium, and low pressure outputs under the regulation of the control system. The pressure regulating valves are proportional control valves, the pressure detection units include sensors and transmitters, the inlet main valve is an electrically controlled regulating valve, and the test branches are equipped with safety relief valves. The control system integrates a human-machine interface. This system can simultaneously test valves of different pressure levels. Through precise pressure regulation, real-time monitoring, safety protection, and control, it improves testing efficiency and accuracy, reduces operational difficulty, and ensures testing safety, making it suitable for various valve pressure testing scenarios.

Description

Technical Field

[0001] This utility model relates to a valve testing system with pressure divider control, belonging to the field of valve testing technology. Background Technology

[0002] In the industrial sector, the quality and performance of valves are crucial to the safe and stable operation of systems, and pressure testing is a key step in ensuring their compliance with standards. However, traditional valve testing methods have significant drawbacks:

[0003] First, traditional methods require independent testing of valves at a single pressure level, necessitating multiple sets of testing equipment, including compressors and pipelines, for different pressure levels. This not only results in high equipment procurement costs but also necessitates additional storage and maintenance resources, increasing operating costs.

[0004] Secondly, testing valves of different pressure ratings separately requires operators to frequently change equipment and adjust parameters, resulting in high labor intensity, long testing cycles, and low production efficiency, making it difficult to meet the needs of large-scale production or urgent orders. Furthermore, the simultaneous operation of multiple sets of equipment consumes a large amount of energy, and the discontinuous operation and frequent start-ups and shutdowns exacerbate energy waste, which is inconsistent with the principles of energy conservation and emission reduction.

[0005] Third, managing and maintaining multiple sets of equipment is complex, requiring professional personnel and sound systems. The significant differences in performance parameters between different pieces of equipment increase the difficulty of troubleshooting and repair, raising management risks. Furthermore, traditional testing systems suffer from insufficient pressure regulation precision and poor stability, affecting the accuracy and reliability of test results.

[0006] Therefore, it is essential to develop a system that can simultaneously perform efficient, energy-saving, and accurate tests on valves of different pressure ratings. Summary of the Invention

[0007] To address these issues, this invention provides a valve testing system with pressure divider control, which solves the problems of high equipment cost, low operating efficiency, serious energy waste, high management difficulty, and inaccurate pressure control in traditional valve testing methods.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a valve testing system with pressure divider control, comprising:

[0009] The compressor is used to output initial pressure;

[0010] A pressure dividing device, connected to the compressor, includes:

[0011] The first inlet main valve, the second inlet main valve, and the third inlet main valve are respectively installed at the inlet ends of the three parallel branches;

[0012] The first pressure regulating valve, the second pressure regulating valve, and the third pressure regulating valve are respectively connected to the outlet ends of the first inlet main valve, the second inlet main valve, and the third inlet main valve;

[0013] The first pressure detection unit, the second pressure detection unit, and the third pressure detection unit monitor the outlet pressure of the first pressure regulating valve, the second pressure regulating valve, and the third pressure regulating valve, respectively.

[0014] The first outlet main valve, the second outlet main valve, and the third outlet main valve are respectively connected to the outlet ends of the first pressure regulating valve, the second pressure regulating valve, and the third pressure regulating valve;

[0015] The control system is electrically connected to the pressure dividing device and is used to receive feedback signals from the first pressure detection unit, the second pressure detection unit, and the third pressure detection unit, and to output adjustment signals to the corresponding first pressure regulating valve, second pressure regulating valve, and third pressure regulating valve.

[0016] The test piping group includes a first test branch, a second test branch, and a third test branch connected in parallel. The first test branch is connected to the high-pressure output terminal P1 of the first outlet main valve, the second test branch is connected to the medium-pressure output terminal P2 of the second outlet main valve, and the third test branch is connected to the low-pressure output terminal P3 of the third outlet main valve.

[0017] As a preferred embodiment of the valve testing system for pressure division control, the first pressure regulating valve, the second pressure regulating valve, and the third pressure regulating valve are all proportional regulating valves.

[0018] As a preferred embodiment of the valve test system for pressure divider control, the first pressure detection unit includes a first pressure sensor and a first signal transmitter, which are used to monitor the outlet pressure of the first pressure regulating valve in real time and transmit the signal to the control system.

[0019] The second pressure detection unit includes a second pressure sensor and a second signal transmitter, used to monitor the outlet pressure of the second pressure regulating valve in real time and transmit the signal to the control system;

[0020] The third pressure detection unit includes a third pressure sensor and a third signal transmitter, which are used to monitor the outlet pressure of the third pressure regulating valve in real time and transmit the signal to the control system.

[0021] As a preferred embodiment of the valve test system with pressure divider control, the first inlet main valve, the second inlet main valve, and the third inlet main valve are all electrically adjustable valves, used to independently control the initial pressure and flow of the corresponding branches.

[0022] As a preferred embodiment of the valve test system with pressure divider control, a first safety relief valve is provided on the first test branch to automatically relieve pressure when the pressure in the first test branch exceeds the limit.

[0023] The second test branch is equipped with a second safety relief valve, which is used to automatically relieve pressure when the pressure in the second test branch exceeds the limit;

[0024] The third test branch is equipped with a third safety relief valve, which is used to automatically relieve pressure when the pressure in the third test branch exceeds the limit.

[0025] As a preferred embodiment of the valve testing system with pressure divider control, the control system integrates a human-machine interface for setting target pressure values ​​and displaying the pressure status of the first test branch, the second test branch, and the third test branch in real time.

[0026] This utility model has the following advantages:

[0027] The system features three parallel branches, each equipped with a pressure regulating valve, a pressure detection unit, and an independent valve, enabling simultaneous testing of valves with different pressure ratings and significantly improving testing efficiency. Compared to the traditional method of testing valves one by one, it saves considerable time and meets the needs of enterprises for rapid valve testing during large-scale production.

[0028] The pressure regulating valve adopts a proportional control valve, which, combined with feedback from the pressure detection unit and adjustment signals from the control system, can precisely control the output pressure of each branch. Whether it is high pressure, medium pressure, or low pressure output, it can stably reach the set value, ensuring accurate valve test pressure, improving the accuracy and reliability of test results, and providing strong support for valve quality inspection.

[0029] The control system integrates a human-machine interface, allowing operators to easily set target pressure values ​​and view the pressure status of each test branch in real time. The entire testing process is intelligently controlled, reducing the difficulty and intensity of manual operation, minimizing human error, and improving the convenience and management efficiency of testing operations.

[0030] Safety pressure relief valves are installed on each test branch. When the branch pressure exceeds the safe range, the pressure will be automatically released, which will effectively prevent equipment damage or safety accidents caused by excessive pressure, ensure the safety and reliability of the test process, and protect the safety of personnel and equipment.

[0031] The main inlet valve is an electrically controlled regulating valve, which can independently control the initial pressure and flow rate of the corresponding branch. During the test, the pressure and flow rate of each branch can be flexibly adjusted according to the different valve test requirements to enhance the system's adaptability and meet the test requirements of various types of valves. Attached Figure Description

[0032] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0033] Figure 1 This is a connection diagram of the valve test system with pressure divider control provided in the embodiments of this utility model;

[0034] Figure 2 This is a schematic diagram of the pressure dividing device of the valve test system with pressure dividing control provided in the embodiment of this utility model.

[0035] In the diagram, 1. Compressor; 2. Pressure divider; 21. First pressure regulating valve; 22. Second pressure regulating valve; 23. Third pressure regulating valve; 24. First pressure detection unit; 25. Second pressure detection unit; 26. Third pressure detection unit; 27. First inlet main valve; 28. Second inlet main valve; 29. ​​Third inlet main valve; 210. First outlet main valve; 211. Second outlet main valve; 212. Third outlet main valve; 3. Control system; 4. Test piping group; 41. First test branch; 42. Second test branch; 43. Third test branch. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] See Figure 1 and Figure 2 This utility model provides a valve testing system with pressure divider control, comprising:

[0038] Compressor 1 is used to output initial pressure;

[0039] Specifically, compressor 1, acting as the pressure source for the entire system, compresses the gas through mechanical compression, increasing its pressure to output a gas with a certain pressure as the initial pressure, providing the power basis for subsequent pressure division and testing. This method utilizes the internal mechanical structure of compressor 1, such as pistons and screws, to compress the gas, reducing the distance between gas molecules and increasing the pressure to meet the pressure conditions required for valve testing.

[0040] Pressure dividing device 2, connected to compressor 1, includes:

[0041] The first inlet main valve 27, the second inlet main valve 28, and the third inlet main valve 29 are respectively installed at the inlet end of the three parallel branches;

[0042] Specifically, the first inlet main valve 27, the second inlet main valve 28, and the third inlet main valve 29 act as "switches" and flow regulating components for each branch. During system operation, they control whether gas enters the corresponding branch and adjust the gas flow rate according to actual needs. When pressure regulation or testing is required for a branch, the corresponding inlet main valve is opened, and gas flows into that branch. To adjust the gas flow rate of a branch, the opening degree of the inlet main valve is changed; a larger opening results in a larger flow rate, and vice versa.

[0043] The first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23 are respectively connected to the outlet ends of the first inlet main valve 27, the second inlet main valve 28, and the third inlet main valve 29;

[0044] Specifically, the function of the pressure regulating valve is to precisely regulate the gas pressure entering the branch circuit. When gas flows out of the main inlet valve and enters the pressure regulating valve, the valve changes its internal throttling structure (such as the position of the valve core, the size of the valve orifice, etc.) to alter the gas flow resistance. According to the throttling principle, when gas passes through the regulating valve, the gas pressure changes accordingly due to the change in the flow area. By adjusting the throttling structure, the gas pressure can be increased or decreased to meet the requirements of different test pressures.

[0045] The first pressure detection unit 24, the second pressure detection unit 25, and the third pressure detection unit 26 respectively monitor the outlet pressure of the first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23.

[0046] Specifically, the pressure detection unit operates based on the principle of pressure sensing. Taking the first pressure detection unit 24 as an example, its first pressure sensor can sense the pressure change of the gas at the outlet of the pressure regulating valve and convert the pressure signal into an electrical signal (such as voltage or current signal). The first signal transmitter then amplifies and converts this electrical signal into a standard signal suitable for the control system 3 to receive and process, and then transmits it to the control system 3. The control system 3 can then acquire the pressure data of each pressure regulating valve outlet in real time, providing a basis for subsequent pressure regulation.

[0047] The first outlet main valve 210, the second outlet main valve 211, and the third outlet main valve 212 are respectively connected to the outlet ends of the first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23;

[0048] Specifically, the first outlet main valve 210, the second outlet main valve 211, and the third outlet main valve 212 control the final gas output of the branch. During the test, after the pressure regulating valve adjusts the gas pressure to a suitable value, the outlet main valve can control whether the adjusted gas is output to the test pipeline group 4 for valve testing. Simultaneously, the outlet main valve can also disconnect the branch from the test pipeline group 4 during system maintenance, repair, or in case of abnormal conditions, ensuring the safety and maintainability of the system.

[0049] The control system 3 is electrically connected to the pressure dividing device 2 and is used to receive feedback signals from the first pressure detection unit 24, the second pressure detection unit 25, and the third pressure detection unit 26, and to output adjustment signals to the corresponding first pressure regulating valve 21, second pressure regulating valve 22, and third pressure regulating valve 23.

[0050] Specifically, after receiving the pressure signal from the pressure detection unit, the control system 3 compares this signal with a pre-set target pressure value. If there is a deviation between the actual pressure and the target pressure, the control system 3 calculates the amount of adjustment needed based on a preset control algorithm (such as a PID control algorithm) and then outputs a corresponding adjustment signal to the pressure regulating valve. The pressure regulating valve adjusts its throttling structure according to the received adjustment signal, thereby changing the outlet pressure and continuously bringing the actual pressure closer to the target pressure value, achieving precise pressure control.

[0051] The test pipeline group 4 includes a first test branch 41, a second test branch 42, and a third test branch 43 connected in parallel. The first test branch 41 is connected to the high-pressure output terminal P1 of the first outlet main valve 210, the second test branch 42 is connected to the medium-pressure output terminal P2 of the second outlet main valve 211, and the third test branch 43 is connected to the low-pressure output terminal P3 of the third outlet main valve 212.

[0052] Specifically, test piping group 4 provides the testing environment for the valves. Gases at different pressures output from the main outlet valve enter their corresponding test branches. These branches deliver the gas to the valves to be tested, applying the appropriate pressure to simulate the valves' pressure conditions during actual operation. Since each branch connects to the output terminals of different pressure levels, valves with different pressure requirements can be tested simultaneously, improving testing efficiency.

[0053] In one possible embodiment, the first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23 are all proportional regulating valves.

[0054] Specifically, the proportional control valve can adjust the valve opening proportionally to the magnitude of the input electrical signal. When the control signal output by the control system 3 changes, the proportional control valve will change the position of the valve core according to the proportion of the signal, thereby precisely controlling the gas flow and pressure. This adjustment method makes the pressure regulation process more continuous and smooth, and compared with ordinary control valves, it can achieve more precise pressure regulation, meeting valve tests with different precision requirements.

[0055] In one possible embodiment, the first pressure detection unit 24 includes a first pressure sensor and a first signal transmitter, used to monitor the outlet pressure of the first pressure regulating valve 21 in real time and transmit the signal to the control system 3;

[0056] The second pressure detection unit 25 includes a second pressure sensor and a second signal transmitter, used to monitor the outlet pressure of the second pressure regulating valve 22 in real time and transmit the signal to the control system 3;

[0057] The third pressure detection unit 26 includes a third pressure sensor and a third signal transmitter, which are used to monitor the outlet pressure of the third pressure regulating valve 23 in real time and transmit the signal to the control system 3.

[0058] Specifically, pressure sensors operate based on the physical characteristics of pressure-sensitive elements. When subjected to gas pressure, these elements undergo physical changes (such as strain and capacitance changes), which are converted into electrical signals. Since the electrical signals output by the sensors are typically weak and susceptible to signal interference, a signal transmitter is needed to amplify, filter, and convert them into standard electrical signals (such as 4-20mA current signals or 0-5V voltage signals) for reliable transmission to control system 3, ensuring accurate pressure data acquisition.

[0059] In one possible embodiment, the first inlet main valve 27, the second inlet main valve 28, and the third inlet main valve 29 are all electrically adjustable valves used to independently control the initial pressure and flow rate of the corresponding branch.

[0060] Specifically, the electric regulating valve adjusts its opening by driving the valve core with a motor. Control system 3 sends electrical signals to the motor of the electric regulating valve to control the motor's rotation direction and angle, thereby precisely controlling the position of the valve core. When it is necessary to adjust the initial pressure and flow rate of a certain branch, control system 3 sends a control signal to the corresponding electric regulating valve according to the actual needs. The electric regulating valve changes its opening according to the signal, thus achieving independent and precise control of the initial pressure and flow rate of that branch, meeting the requirements of the initial state of each branch under different test conditions.

[0061] In one possible embodiment, the first test branch 41 is provided with a first safety relief valve, which is used to automatically relieve pressure when the pressure in the first test branch 41 exceeds the limit.

[0062] The second test branch 42 is equipped with a second safety relief valve, which is used to automatically relieve pressure when the pressure in the second test branch 42 exceeds the limit;

[0063] The third test branch 43 is equipped with a third safety relief valve, which is used to automatically relieve pressure when the pressure in the third test branch 43 exceeds the limit.

[0064] Specifically, a safety relief valve is a pressure-controlled protective device. When the pressure in the test branch exceeds the set opening pressure of the safety relief valve, the pressure force on the valve disc exceeds the spring preload (or other balancing force), causing the valve disc to open and gas to escape from the relief port, thereby reducing the pressure in the branch. When the pressure drops to a certain level, below the closing pressure of the safety relief valve, the valve disc closes again under the action of the spring force, stopping the pressure relief and ensuring that the test branch operates within a safe pressure range, preventing excessive pressure from damaging equipment or causing safety accidents.

[0065] In one possible embodiment, the control system 3 integrates a human-machine interface for setting target pressure values ​​and displaying the pressure status of the first test branch 41, the second test branch 42, and the third test branch 43 in real time.

[0066] Specifically, the human-machine interface typically consists of a display screen, input devices (such as a keyboard, touchpad, etc.), and corresponding software. Operators input the target pressure value via the input devices, and this data is transmitted to the processor of the control system 3 for storage and processing. Simultaneously, the control system 3 processes the pressure data from each pressure detection unit and displays it intuitively on the display screen (e.g., numbers, graphs). This allows operators to easily understand the system's real-time operating status, adjust test parameters promptly, and effectively monitor and manage the test process.

[0067] The testing process for this utility model is as follows:

[0068] First, the preparation stage

[0069] Equipment Connection: Install the valves to be tested in the first test branch 41, the second test branch 42, and the third test branch 43, respectively. Ensure that the connections between the compressor 1, the pressure dividing device 2, the control system 3, and the test piping group 4 are secure and that the electrical connections are normal.

[0070] Parameter setting: The operator sets the target pressure value of each test branch through the human-machine interface of the control system 3, namely the target pressure of the high pressure output terminal P1, the medium pressure output terminal P2 and the low pressure output terminal P3.

[0071] Second, initial pressure output

[0072] Compressor 1 is started, and it begins to work, compressing the gas and outputting initial gas with a certain pressure. This initial gas enters pressure dividing device 2, providing a pressure source for subsequent pressure dividing operations.

[0073] Third, voltage regulation

[0074] Gas enters the branches: After the initial gas arrives at the pressure divider 2, it passes through the first inlet main valve 27, the second inlet main valve 28, and the third inlet main valve 29 to enter three parallel branches. These three inlet main valves are all electrically adjustable valves, which can independently control the initial pressure and flow rate of the corresponding branch according to actual needs.

[0075] Pressure Regulation: The gas entering each branch then passes through the first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23. These pressure regulating valves are all proportional regulating valves. The control system 3 outputs corresponding regulation signals to the pressure regulating valves based on the preset target pressure value and the actual pressure signals fed back by each pressure detection unit. The pressure regulating valves change their valve opening according to the regulation signals, thereby precisely regulating the gas pressure.

[0076] Pressure Monitoring and Feedback: The first pressure detection unit 24, the second pressure detection unit 25, and the third pressure detection unit 26 monitor the outlet pressures of the first pressure regulating valve 21, the second pressure regulating valve 22, and the third pressure regulating valve 23 in real time, respectively. Pressure sensors detect pressure changes and convert them into electrical signals. Signal transmitters process these signals and transmit them to the control system 3. The control system 3 compares the actual pressure with the target pressure. If a deviation exists, it continuously adjusts the regulating signal, causing the pressure regulating valves to continuously change their opening until the actual pressure reaches the target pressure value and remains stable.

[0077] Fourth, valve testing

[0078] Once the outlet pressure of each pressure regulating valve stabilizes at the target pressure value, the first outlet main valve 210, the second outlet main valve 211, and the third outlet main valve 212 are opened. Gases of different pressures (high, medium, and low) are then delivered to the valves installed in each branch through the corresponding test branches, applying the corresponding pressure to the valves and starting the valve test.

[0079] During the test, the pressure detection unit continuously monitors the pressure of each test branch to ensure pressure stability. If pressure fluctuations occur, the control system 3 will promptly adjust the opening of the pressure regulating valve to maintain a stable test pressure.

[0080] Fifth, security protection

[0081] If the pressure in a certain test branch exceeds the set safety value, the safety relief valve (first safety relief valve, second safety relief valve or third safety relief valve) on that branch will automatically open to discharge the excess gas and reduce the branch pressure to a safe range, thereby protecting the equipment and personnel.

[0082] Sixth, End of Experiment and Data Recording

[0083] Once the valve test has reached the specified time or completed the specified test items, the main outlet valve is closed, and pressure application to the valve is stopped. Operators can view and record pressure data, test time, and other information during the test through the human-machine interface of control system 3, in order to evaluate and analyze the valve's performance.

[0084] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A pressure-dividing controlled valve test system, characterized by, include: Compressor (1) for outputting an initial pressure ; The pressure dividing device (2), connected to the compressor (1), includes: The first inlet main valve (27), the second inlet main valve (28), and the third inlet main valve (29) are respectively installed at the inlet ends of the three parallel branches; The first pressure regulating valve (21), the second pressure regulating valve (22), and the third pressure regulating valve (23) are respectively connected to the outlet ends of the first inlet main valve (27), the second inlet main valve (28), and the third inlet main valve (29); The first pressure detection unit (24), the second pressure detection unit (25), and the third pressure detection unit (26) respectively monitor the outlet pressure of the first pressure regulating valve (21), the second pressure regulating valve (22), and the third pressure regulating valve (23); The first outlet main valve (210), the second outlet main valve (211), and the third outlet main valve (212) are respectively connected to the outlet ends of the first pressure regulating valve (21), the second pressure regulating valve (22), and the third pressure regulating valve (23); The control system (3) is electrically connected to the pressure divider (2) and is used to receive feedback signals from the first pressure detection unit (24), the second pressure detection unit (25), and the third pressure detection unit (26), and to output adjustment signals to the corresponding first pressure regulating valve (21), second pressure regulating valve (22), and third pressure regulating valve (23). The test pipeline group (4) includes a first test branch (41), a second test branch (42), and a third test branch (43) connected in parallel. The first test branch (41) is connected to the high-pressure output terminal P1 of the first outlet main valve (210), the second test branch (42) is connected to the medium-pressure output terminal P2 of the second outlet main valve (211), and the third test branch (43) is connected to the low-pressure output terminal P3 of the third outlet main valve (212).

2. The valve testing system with pressure divider control according to claim 1, characterized in that: The first pressure regulating valve (21), the second pressure regulating valve (22), and the third pressure regulating valve (23) are all proportional regulating valves.

3. The valve testing system with pressure divider control according to claim 1, characterized in that: The first pressure detection unit (24) includes a first pressure sensor and a first signal transmitter, which are used to monitor the outlet pressure of the first pressure regulating valve (21) in real time and transmit the signal to the control system (3). The second pressure detection unit (25) includes a second pressure sensor and a second signal transmitter, which are used to monitor the outlet pressure of the second pressure regulating valve (22) in real time and transmit the signal to the control system (3). The third pressure detection unit (26) includes a third pressure sensor and a third signal transmitter, which are used to monitor the outlet pressure of the third pressure regulating valve (23) in real time and transmit the signal to the control system (3).

4. The valve testing system with pressure divider control according to claim 1, characterized in that: The first inlet main valve (27), the second inlet main valve (28), and the third inlet main valve (29) are all electric regulating valves used to independently control the initial pressure and flow of the corresponding branch.

5. The valve testing system with pressure divider control according to claim 1, characterized in that: The first test branch (41) is equipped with a first safety relief valve, which is used to automatically relieve pressure when the pressure in the first test branch (41) exceeds the limit; The second test branch (42) is equipped with a second safety relief valve, which is used to automatically relieve pressure when the pressure in the second test branch (42) exceeds the limit; The third test branch (43) is equipped with a third safety relief valve, which is used to automatically relieve pressure when the pressure in the third test branch (43) exceeds the limit.

6. The valve testing system with pressure divider control according to claim 1, characterized in that: The control system (3) integrates a human-machine interface for setting target pressure values ​​and displaying the pressure status of the first test branch (41), the second test branch (42), and the third test branch (43) in real time.

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